diff --git a/.gitattributes b/.gitattributes
index 48ae9d1..8e023c3 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,4 +1,6 @@
 * text=auto
 
-findwinsdk text eol=lf
+msvs-detect text eol=lf
 checkenv text eol=lf
+configure text eol=lf
+configure.ac text eol=lf
diff --git a/.gitignore b/.gitignore
index ee9d220..04194c8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,4 +10,7 @@ flexlink.opt
 test/dump.exe
 version.res
 version.ml
-Makefile.winsdk
+Makefile.config
+autom4te.cache
+config.log
+config.status
diff --git a/CHANGES b/CHANGES
index 1bf8cc9..d247347 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,9 +1,10 @@
 Next version
 - Fixes for clang (patch by Roven Gabriel)
-- Improve autodetection of WinSDK paths (patch by David Allsopp)
+- Improve autodetection of Visual Studio/Windows SDK paths (patch by David Allsopp)
 - Add MSVC_DETECT Makefile variable which overrides all C Compiler detection logic when 0.
 - Add checkenv script which determines if the environment is sound specifying MSVC_DETECT=0
 - Improve performance of -builtin
+- Add beginnings of a proper configure script
 
 Version 0.34
 - New option -norelrelocs to check that no relative flexdll relocations are created (this ensures that the generated DLLs can be loaded at any address),
diff --git a/Makefile b/Makefile
index 64df927..b2cbf84 100644
--- a/Makefile
+++ b/Makefile
@@ -1,41 +1,14 @@
-VERSION = 0.34
-all: flexlink.exe support
-
-include $(shell cygpath -ad "$(shell ocamlopt -where)/Makefile.config")
-
-MINGW_PREFIX = i686-w64-mingw32
-MINCC = $(MINGW_PREFIX)-gcc
-
-MINGW64_PREFIX = x86_64-w64-mingw32
-MIN64CC = $(MINGW64_PREFIX)-gcc
-
-CYGWIN_PREFIX = i686-pc-cygwin
-CYGCC = $(CYGWIN_PREFIX)-gcc
-
-CYGWIN64_PREFIX = x86_64-pc-cygwin
-CYG64CC = $(CYGWIN64_PREFIX)-gcc
-
-.PHONY: version.ml
-version.ml:
-	echo "let version = \"$(VERSION)\"" > version.ml
-	echo "let mingw_prefix = \"$(MINGW_PREFIX)\"" >> version.ml
-	echo "let mingw64_prefix = \"$(MINGW64_PREFIX)\"" >> version.ml
-
-# Supported tool-chains
-
-CHAINS = mingw mingw64 cygwin cygwin64 msvc msvc64
-
-# Compilers
+ifeq ($(findstring clean,$(MAKECMDGOALS)),)
+include Makefile.config
+endif
 
-# Attempt to locate the Windows SDK
+all: $(if $(filter-out no,$(HAVE_OCAMLOPT)),flexlink.exe) support
 
-ifeq ($(findstring clean,$(MAKECMDGOALS)),)
-include Makefile.winsdk
+ifneq ($(filter-out no,$(HAVE_OCAMLOPT)),)
+include $(shell cygpath -ad "$(shell ocamlopt -where)/Makefile.config")
 endif
 
-Makefile.winsdk: findwinsdk
-	bash ./findwinsdk x86 > $@
-	bash ./findwinsdk x64 64 >> $@
+# Compilers
 
 MSVC_DETECT=1
 MSVC_FLAGS=/nologo /MD -D_CRT_SECURE_NO_DEPRECATE /GS-
@@ -47,38 +20,18 @@ MSVC64_PREFIX=
 MSVCC=cl.exe $(MSVC_FLAGS)
 MSVCC64=cl.exe $(MSVC_FLAGS)
 else
-ifeq ($(SDK),)
-# Otherwise, assume the 32-bit version of VS 2008 or Win7 SDK is in the path.
-
-MSVCC_ROOT := $(shell which cl.exe 2>/dev/null | cygpath -f - -ad | xargs -d \\n dirname 2>/dev/null | cygpath -f - -m)
-MSVC_LIB1 = $(shell dirname $(MSVCC_ROOT))
-MSVC_LIB2 = $(shell which ResGen.exe | cygpath -f - -ad | xargs -d \\n dirname | xargs -d \\n dirname | cygpath -f - -m)
-MSVC_LIB = $(MSVC_LIB1)/Lib;$(MSVC_LIB2)/Lib
-MSVC_INCLUDE = $(MSVC_LIB1)/Include;$(MSVC_LIB2)/Include
-MSVC_PREFIX=LIB="$(MSVC_LIB)" INCLUDE="$(MSVC_INCLUDE)" 
-
-MSVC64_LIB = $(MSVC_LIB1)/Lib/amd64;$(MSVC_LIB2)/Lib/x64
-MSVC64_PREFIX=LIB="$(MSVC64_LIB)" INCLUDE="$(MSVC_INCLUDE)" 
-
-MSVCC = $(MSVCC_ROOT)/cl.exe $(MSVC_FLAGS)
-MSVCC64 = $(MSVCC_ROOT)/amd64/cl.exe $(MSVC_FLAGS)
-else
-MSVCC_ROOT:=
-MSVC_PREFIX=PATH="$(SDK):$(PATH)" LIB="$(SDK_LIB);$(LIB)" INCLUDE="$(SDK_INC);$(INCLUDE)" 
-MSVC64_PREFIX=PATH="$(SDK64):$(PATH)" LIB="$(SDK64_LIB);$(LIB)" INCLUDE="$(SDK64_INC);$(INCLUDE)" 
+# Otherwise, use configured values
+MSVC_PREFIX=PATH="$(MSVS_PATH)$(PATH)" LIB="$(MSVS_LIB);$(LIB)" INCLUDE="$(MSVS_INC);$(INCLUDE)"
+MSVC64_PREFIX=PATH="$(MSVS64_PATH)$(PATH)" LIB="$(MSVS64_LIB);$(LIB)" INCLUDE="$(MSVS64_INC);$(INCLUDE)"
 
 MSVCC = cl.exe $(MSVC_FLAGS)
 MSVCC64 = cl.exe $(MSVC_FLAGS)
 endif
-endif
 
+ifeq ($(MSVS_DETECT),1)
 show_root:
-ifeq ($(MSVCC_ROOT),)
-	@echo "$(SDK)"
-	@echo "$(SDK_LIB)"
-else
-	@echo "$(MSVCC_ROOT)"
-	@echo "$(MSVC_LIB)"
+	@echo "$(MSVS_PATH)"
+	@echo "$(MSVS_LIB)"
 endif
 
 OCAMLOPT = ocamlopt
@@ -190,10 +143,11 @@ demo_msvc64:  flexlink.exe flexdll_msvc64.obj flexdll_initer_msvc64.obj
 	(cd test && $(MSVC64_PREFIX) $(MAKE) clean demo CHAIN=msvc64 CC="$(MSVCC64)" O=obj)
 
 distclean: clean
-	rm -f Makefile.winsdk
+	rm -f Makefile.config config.log config.status version.ml
+	rm -rf autom4te.cache
 
 clean:
-	rm -f *.obj *.o *.lib *.a *.exe *.opt *.cmx *.dll *.exp *.cmi *.cmo *~ version.res version.ml
+	rm -f *.obj *.o *.lib *.a *.exe *.opt *.cmx *.dll *.exp *.cmi *.cmo *~ version.res
 	cd test && $(MAKE) clean
 
 
@@ -204,8 +158,6 @@ URL = frisch@frisch.fr:www/flexdll/
 
 # Source packages
 
-PACKAGE = flexdll-$(VERSION).tar.gz
-
 package_src:
 	rm -Rf flexdll-$(VERSION)
 	mkdir flexdll-$(VERSION)
@@ -266,3 +218,9 @@ upload_installer:
 
 upload_all:
 	$(MAKE) upload_src upload_bin installer upload_installer
+
+Makefile.config: Makefile.config.in configure
+	./configure
+
+configure: configure.ac
+	autoconf
diff --git a/Makefile.config.in b/Makefile.config.in
new file mode 100644
index 0000000..82cacdd
--- /dev/null
+++ b/Makefile.config.in
@@ -0,0 +1,23 @@
+VERSION = @PACKAGE_VERSION@
+
+PACKAGE = @PACKAGE_TARNAME@-@PACKAGE_VERSION@.tar.gz
+
+MINGW_PREFIX=@MINGW_PREFIX@
+MINCC=@MINCC@
+MINGW64_PREFIX=@MINGW64_PREFIX@
+MIN64CC=@MIN64CC@
+CYGCC=@CYGCC@
+CYG64CC=@CYG64CC@
+
+MSVS_PATH=@MSVS_PATH@
+MSVS_INC=@MSVS_INC@
+MSVS_LIB=@MSVS_LIB@
+MSVS64_PATH=@MSVS64_PATH@
+MSVS64_INC=@MSVS64_INC@
+MSVS64_LIB=@MSVS64_LIB@
+
+# Supported tool-chains
+
+CHAINS =@CHAINS@
+
+HAVE_OCAMLOPT = @HAVE_OCAMLOPT@
diff --git a/configure b/configure
new file mode 100755
index 0000000..62562bf
--- /dev/null
+++ b/configure
@@ -0,0 +1,3386 @@
+#! /bin/sh
+# Guess values for system-dependent variables and create Makefiles.
+# Generated by GNU Autoconf 2.69 for FlexDLL 0.35.
+#
+# Report bugs to <alain@frisch.fr>.
+#
+#
+# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
+#
+#
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='print -r --'
+  as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='printf %s\n'
+  as_echo_n='printf %s'
+else
+  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+    as_echo_n='/usr/ucb/echo -n'
+  else
+    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+    as_echo_n_body='eval
+      arg=$1;
+      case $arg in #(
+      *"$as_nl"*)
+	expr "X$arg" : "X\\(.*\\)$as_nl";
+	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+      esac;
+      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+    '
+    export as_echo_n_body
+    as_echo_n='sh -c $as_echo_n_body as_echo'
+  fi
+  export as_echo_body
+  as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" ""	$as_nl"
+
+# Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there.  '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+# Use a proper internal environment variable to ensure we don't fall
+  # into an infinite loop, continuously re-executing ourselves.
+  if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then
+    _as_can_reexec=no; export _as_can_reexec;
+    # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+  *v*x* | *x*v* ) as_opts=-vx ;;
+  *v* ) as_opts=-v ;;
+  *x* ) as_opts=-x ;;
+  * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
+as_fn_exit 255
+  fi
+  # We don't want this to propagate to other subprocesses.
+          { _as_can_reexec=; unset _as_can_reexec;}
+if test "x$CONFIG_SHELL" = x; then
+  as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '\${1+\"\$@\"}'='\"\$@\"'
+  setopt NO_GLOB_SUBST
+else
+  case \`(set -o) 2>/dev/null\` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+"
+  as_required="as_fn_return () { (exit \$1); }
+as_fn_success () { as_fn_return 0; }
+as_fn_failure () { as_fn_return 1; }
+as_fn_ret_success () { return 0; }
+as_fn_ret_failure () { return 1; }
+
+exitcode=0
+as_fn_success || { exitcode=1; echo as_fn_success failed.; }
+as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; }
+as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; }
+as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; }
+if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then :
+
+else
+  exitcode=1; echo positional parameters were not saved.
+fi
+test x\$exitcode = x0 || exit 1
+test -x / || exit 1"
+  as_suggested="  as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
+  as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
+  eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
+  test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1"
+  if (eval "$as_required") 2>/dev/null; then :
+  as_have_required=yes
+else
+  as_have_required=no
+fi
+  if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then :
+
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+as_found=false
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  as_found=:
+  case $as_dir in #(
+	 /*)
+	   for as_base in sh bash ksh sh5; do
+	     # Try only shells that exist, to save several forks.
+	     as_shell=$as_dir/$as_base
+	     if { test -f "$as_shell" || test -f "$as_shell.exe"; } &&
+		    { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then :
+  CONFIG_SHELL=$as_shell as_have_required=yes
+		   if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then :
+  break 2
+fi
+fi
+	   done;;
+       esac
+  as_found=false
+done
+$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } &&
+	      { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then :
+  CONFIG_SHELL=$SHELL as_have_required=yes
+fi; }
+IFS=$as_save_IFS
+
+
+      if test "x$CONFIG_SHELL" != x; then :
+  export CONFIG_SHELL
+             # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+  *v*x* | *x*v* ) as_opts=-vx ;;
+  *v* ) as_opts=-v ;;
+  *x* ) as_opts=-x ;;
+  * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
+exit 255
+fi
+
+    if test x$as_have_required = xno; then :
+  $as_echo "$0: This script requires a shell more modern than all"
+  $as_echo "$0: the shells that I found on your system."
+  if test x${ZSH_VERSION+set} = xset ; then
+    $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should"
+    $as_echo "$0: be upgraded to zsh 4.3.4 or later."
+  else
+    $as_echo "$0: Please tell bug-autoconf@gnu.org and alain@frisch.fr
+$0: about your system, including any error possibly output
+$0: before this message. Then install a modern shell, or
+$0: manually run the script under such a shell if you do
+$0: have one."
+  fi
+  exit 1
+fi
+fi
+fi
+SHELL=${CONFIG_SHELL-/bin/sh}
+export SHELL
+# Unset more variables known to interfere with behavior of common tools.
+CLICOLOR_FORCE= GREP_OPTIONS=
+unset CLICOLOR_FORCE GREP_OPTIONS
+
+## --------------------- ##
+## M4sh Shell Functions. ##
+## --------------------- ##
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+  test -f "$1" && test -x "$1"
+} # as_fn_executable_p
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with STATUS, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$1; test $as_status -eq 0 && as_status=1
+  if test "$4"; then
+    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+  fi
+  $as_echo "$as_me: error: $2" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+
+  as_lineno_1=$LINENO as_lineno_1a=$LINENO
+  as_lineno_2=$LINENO as_lineno_2a=$LINENO
+  eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" &&
+  test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || {
+  # Blame Lee E. McMahon (1931-1989) for sed's syntax.  :-)
+  sed -n '
+    p
+    /[$]LINENO/=
+  ' <$as_myself |
+    sed '
+      s/[$]LINENO.*/&-/
+      t lineno
+      b
+      :lineno
+      N
+      :loop
+      s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/
+      t loop
+      s/-\n.*//
+    ' >$as_me.lineno &&
+  chmod +x "$as_me.lineno" ||
+    { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
+
+  # If we had to re-execute with $CONFIG_SHELL, we're ensured to have
+  # already done that, so ensure we don't try to do so again and fall
+  # in an infinite loop.  This has already happened in practice.
+  _as_can_reexec=no; export _as_can_reexec
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensitive to this).
+  . "./$as_me.lineno"
+  # Exit status is that of the last command.
+  exit
+}
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -pR'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -pR'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -pR'
+  fi
+else
+  as_ln_s='cp -pR'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+test -n "$DJDIR" || exec 7<&0 </dev/null
+exec 6>&1
+
+# Name of the host.
+# hostname on some systems (SVR3.2, old GNU/Linux) returns a bogus exit status,
+# so uname gets run too.
+ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
+
+#
+# Initializations.
+#
+ac_default_prefix=/usr/local
+ac_clean_files=
+ac_config_libobj_dir=.
+LIBOBJS=
+cross_compiling=no
+subdirs=
+MFLAGS=
+MAKEFLAGS=
+
+# Identity of this package.
+PACKAGE_NAME='FlexDLL'
+PACKAGE_TARNAME='flexdll'
+PACKAGE_VERSION='0.35'
+PACKAGE_STRING='FlexDLL 0.35'
+PACKAGE_BUGREPORT='alain@frisch.fr'
+PACKAGE_URL='http://alain.frisch.fr/flexdll.html'
+
+ac_subst_vars='LTLIBOBJS
+LIBOBJS
+HAVE_OCAMLOPT
+CHAINS
+MSVS64_LIB
+MSVS64_INC
+MSVS64_PATH
+MSVS_LIB
+MSVS_INC
+MSVS_PATH
+CYG64CC
+CYGCC
+MIN64CC
+MINCC
+MINGW64_PREFIX
+MINGW_PREFIX
+target_alias
+host_alias
+build_alias
+LIBS
+ECHO_T
+ECHO_N
+ECHO_C
+DEFS
+mandir
+localedir
+libdir
+psdir
+pdfdir
+dvidir
+htmldir
+infodir
+docdir
+oldincludedir
+includedir
+localstatedir
+sharedstatedir
+sysconfdir
+datadir
+datarootdir
+libexecdir
+sbindir
+bindir
+program_transform_name
+prefix
+exec_prefix
+PACKAGE_URL
+PACKAGE_BUGREPORT
+PACKAGE_STRING
+PACKAGE_VERSION
+PACKAGE_TARNAME
+PACKAGE_NAME
+PATH_SEPARATOR
+SHELL'
+ac_subst_files=''
+ac_user_opts='
+enable_option_checking
+'
+      ac_precious_vars='build_alias
+host_alias
+target_alias
+MINGW_PREFIX
+MINGW64_PREFIX'
+
+
+# Initialize some variables set by options.
+ac_init_help=
+ac_init_version=false
+ac_unrecognized_opts=
+ac_unrecognized_sep=
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+cache_file=/dev/null
+exec_prefix=NONE
+no_create=
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+verbose=
+x_includes=NONE
+x_libraries=NONE
+
+# Installation directory options.
+# These are left unexpanded so users can "make install exec_prefix=/foo"
+# and all the variables that are supposed to be based on exec_prefix
+# by default will actually change.
+# Use braces instead of parens because sh, perl, etc. also accept them.
+# (The list follows the same order as the GNU Coding Standards.)
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datarootdir='${prefix}/share'
+datadir='${datarootdir}'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
+infodir='${datarootdir}/info'
+htmldir='${docdir}'
+dvidir='${docdir}'
+pdfdir='${docdir}'
+psdir='${docdir}'
+libdir='${exec_prefix}/lib'
+localedir='${datarootdir}/locale'
+mandir='${datarootdir}/man'
+
+ac_prev=
+ac_dashdash=
+for ac_option
+do
+  # If the previous option needs an argument, assign it.
+  if test -n "$ac_prev"; then
+    eval $ac_prev=\$ac_option
+    ac_prev=
+    continue
+  fi
+
+  case $ac_option in
+  *=?*) ac_optarg=`expr "X$ac_option" : '[^=]*=\(.*\)'` ;;
+  *=)   ac_optarg= ;;
+  *)    ac_optarg=yes ;;
+  esac
+
+  # Accept the important Cygnus configure options, so we can diagnose typos.
+
+  case $ac_dashdash$ac_option in
+  --)
+    ac_dashdash=yes ;;
+
+  -bindir | --bindir | --bindi | --bind | --bin | --bi)
+    ac_prev=bindir ;;
+  -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+    bindir=$ac_optarg ;;
+
+  -build | --build | --buil | --bui | --bu)
+    ac_prev=build_alias ;;
+  -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+    build_alias=$ac_optarg ;;
+
+  -cache-file | --cache-file | --cache-fil | --cache-fi \
+  | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+    ac_prev=cache_file ;;
+  -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+  | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+    cache_file=$ac_optarg ;;
+
+  --config-cache | -C)
+    cache_file=config.cache ;;
+
+  -datadir | --datadir | --datadi | --datad)
+    ac_prev=datadir ;;
+  -datadir=* | --datadir=* | --datadi=* | --datad=*)
+    datadir=$ac_optarg ;;
+
+  -datarootdir | --datarootdir | --datarootdi | --datarootd | --dataroot \
+  | --dataroo | --dataro | --datar)
+    ac_prev=datarootdir ;;
+  -datarootdir=* | --datarootdir=* | --datarootdi=* | --datarootd=* \
+  | --dataroot=* | --dataroo=* | --dataro=* | --datar=*)
+    datarootdir=$ac_optarg ;;
+
+  -disable-* | --disable-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid feature name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"enable_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--disable-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval enable_$ac_useropt=no ;;
+
+  -docdir | --docdir | --docdi | --doc | --do)
+    ac_prev=docdir ;;
+  -docdir=* | --docdir=* | --docdi=* | --doc=* | --do=*)
+    docdir=$ac_optarg ;;
+
+  -dvidir | --dvidir | --dvidi | --dvid | --dvi | --dv)
+    ac_prev=dvidir ;;
+  -dvidir=* | --dvidir=* | --dvidi=* | --dvid=* | --dvi=* | --dv=*)
+    dvidir=$ac_optarg ;;
+
+  -enable-* | --enable-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid feature name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"enable_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--enable-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval enable_$ac_useropt=\$ac_optarg ;;
+
+  -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
+  | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
+  | --exec | --exe | --ex)
+    ac_prev=exec_prefix ;;
+  -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
+  | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
+  | --exec=* | --exe=* | --ex=*)
+    exec_prefix=$ac_optarg ;;
+
+  -gas | --gas | --ga | --g)
+    # Obsolete; use --with-gas.
+    with_gas=yes ;;
+
+  -help | --help | --hel | --he | -h)
+    ac_init_help=long ;;
+  -help=r* | --help=r* | --hel=r* | --he=r* | -hr*)
+    ac_init_help=recursive ;;
+  -help=s* | --help=s* | --hel=s* | --he=s* | -hs*)
+    ac_init_help=short ;;
+
+  -host | --host | --hos | --ho)
+    ac_prev=host_alias ;;
+  -host=* | --host=* | --hos=* | --ho=*)
+    host_alias=$ac_optarg ;;
+
+  -htmldir | --htmldir | --htmldi | --htmld | --html | --htm | --ht)
+    ac_prev=htmldir ;;
+  -htmldir=* | --htmldir=* | --htmldi=* | --htmld=* | --html=* | --htm=* \
+  | --ht=*)
+    htmldir=$ac_optarg ;;
+
+  -includedir | --includedir | --includedi | --included | --include \
+  | --includ | --inclu | --incl | --inc)
+    ac_prev=includedir ;;
+  -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
+  | --includ=* | --inclu=* | --incl=* | --inc=*)
+    includedir=$ac_optarg ;;
+
+  -infodir | --infodir | --infodi | --infod | --info | --inf)
+    ac_prev=infodir ;;
+  -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
+    infodir=$ac_optarg ;;
+
+  -libdir | --libdir | --libdi | --libd)
+    ac_prev=libdir ;;
+  -libdir=* | --libdir=* | --libdi=* | --libd=*)
+    libdir=$ac_optarg ;;
+
+  -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+  | --libexe | --libex | --libe)
+    ac_prev=libexecdir ;;
+  -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+  | --libexe=* | --libex=* | --libe=*)
+    libexecdir=$ac_optarg ;;
+
+  -localedir | --localedir | --localedi | --localed | --locale)
+    ac_prev=localedir ;;
+  -localedir=* | --localedir=* | --localedi=* | --localed=* | --locale=*)
+    localedir=$ac_optarg ;;
+
+  -localstatedir | --localstatedir | --localstatedi | --localstated \
+  | --localstate | --localstat | --localsta | --localst | --locals)
+    ac_prev=localstatedir ;;
+  -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+  | --localstate=* | --localstat=* | --localsta=* | --localst=* | --locals=*)
+    localstatedir=$ac_optarg ;;
+
+  -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
+    ac_prev=mandir ;;
+  -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
+    mandir=$ac_optarg ;;
+
+  -nfp | --nfp | --nf)
+    # Obsolete; use --without-fp.
+    with_fp=no ;;
+
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c | -n)
+    no_create=yes ;;
+
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
+    no_recursion=yes ;;
+
+  -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
+  | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
+  | --oldin | --oldi | --old | --ol | --o)
+    ac_prev=oldincludedir ;;
+  -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
+  | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
+  | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
+    oldincludedir=$ac_optarg ;;
+
+  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+    ac_prev=prefix ;;
+  -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+    prefix=$ac_optarg ;;
+
+  -program-prefix | --program-prefix | --program-prefi | --program-pref \
+  | --program-pre | --program-pr | --program-p)
+    ac_prev=program_prefix ;;
+  -program-prefix=* | --program-prefix=* | --program-prefi=* \
+  | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
+    program_prefix=$ac_optarg ;;
+
+  -program-suffix | --program-suffix | --program-suffi | --program-suff \
+  | --program-suf | --program-su | --program-s)
+    ac_prev=program_suffix ;;
+  -program-suffix=* | --program-suffix=* | --program-suffi=* \
+  | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
+    program_suffix=$ac_optarg ;;
+
+  -program-transform-name | --program-transform-name \
+  | --program-transform-nam | --program-transform-na \
+  | --program-transform-n | --program-transform- \
+  | --program-transform | --program-transfor \
+  | --program-transfo | --program-transf \
+  | --program-trans | --program-tran \
+  | --progr-tra | --program-tr | --program-t)
+    ac_prev=program_transform_name ;;
+  -program-transform-name=* | --program-transform-name=* \
+  | --program-transform-nam=* | --program-transform-na=* \
+  | --program-transform-n=* | --program-transform-=* \
+  | --program-transform=* | --program-transfor=* \
+  | --program-transfo=* | --program-transf=* \
+  | --program-trans=* | --program-tran=* \
+  | --progr-tra=* | --program-tr=* | --program-t=*)
+    program_transform_name=$ac_optarg ;;
+
+  -pdfdir | --pdfdir | --pdfdi | --pdfd | --pdf | --pd)
+    ac_prev=pdfdir ;;
+  -pdfdir=* | --pdfdir=* | --pdfdi=* | --pdfd=* | --pdf=* | --pd=*)
+    pdfdir=$ac_optarg ;;
+
+  -psdir | --psdir | --psdi | --psd | --ps)
+    ac_prev=psdir ;;
+  -psdir=* | --psdir=* | --psdi=* | --psd=* | --ps=*)
+    psdir=$ac_optarg ;;
+
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil)
+    silent=yes ;;
+
+  -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+    ac_prev=sbindir ;;
+  -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+  | --sbi=* | --sb=*)
+    sbindir=$ac_optarg ;;
+
+  -sharedstatedir | --sharedstatedir | --sharedstatedi \
+  | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
+  | --sharedst | --shareds | --shared | --share | --shar \
+  | --sha | --sh)
+    ac_prev=sharedstatedir ;;
+  -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
+  | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
+  | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
+  | --sha=* | --sh=*)
+    sharedstatedir=$ac_optarg ;;
+
+  -site | --site | --sit)
+    ac_prev=site ;;
+  -site=* | --site=* | --sit=*)
+    site=$ac_optarg ;;
+
+  -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+    ac_prev=srcdir ;;
+  -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+    srcdir=$ac_optarg ;;
+
+  -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
+  | --syscon | --sysco | --sysc | --sys | --sy)
+    ac_prev=sysconfdir ;;
+  -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
+  | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
+    sysconfdir=$ac_optarg ;;
+
+  -target | --target | --targe | --targ | --tar | --ta | --t)
+    ac_prev=target_alias ;;
+  -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
+    target_alias=$ac_optarg ;;
+
+  -v | -verbose | --verbose | --verbos | --verbo | --verb)
+    verbose=yes ;;
+
+  -version | --version | --versio | --versi | --vers | -V)
+    ac_init_version=: ;;
+
+  -with-* | --with-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid package name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--with-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=\$ac_optarg ;;
+
+  -without-* | --without-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*without-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid package name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--without-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=no ;;
+
+  --x)
+    # Obsolete; use --with-x.
+    with_x=yes ;;
+
+  -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
+  | --x-incl | --x-inc | --x-in | --x-i)
+    ac_prev=x_includes ;;
+  -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
+  | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
+    x_includes=$ac_optarg ;;
+
+  -x-libraries | --x-libraries | --x-librarie | --x-librari \
+  | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
+    ac_prev=x_libraries ;;
+  -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
+  | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
+    x_libraries=$ac_optarg ;;
+
+  -*) as_fn_error $? "unrecognized option: \`$ac_option'
+Try \`$0 --help' for more information"
+    ;;
+
+  *=*)
+    ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`
+    # Reject names that are not valid shell variable names.
+    case $ac_envvar in #(
+      '' | [0-9]* | *[!_$as_cr_alnum]* )
+      as_fn_error $? "invalid variable name: \`$ac_envvar'" ;;
+    esac
+    eval $ac_envvar=\$ac_optarg
+    export $ac_envvar ;;
+
+  *)
+    # FIXME: should be removed in autoconf 3.0.
+    $as_echo "$as_me: WARNING: you should use --build, --host, --target" >&2
+    expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
+      $as_echo "$as_me: WARNING: invalid host type: $ac_option" >&2
+    : "${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}"
+    ;;
+
+  esac
+done
+
+if test -n "$ac_prev"; then
+  ac_option=--`echo $ac_prev | sed 's/_/-/g'`
+  as_fn_error $? "missing argument to $ac_option"
+fi
+
+if test -n "$ac_unrecognized_opts"; then
+  case $enable_option_checking in
+    no) ;;
+    fatal) as_fn_error $? "unrecognized options: $ac_unrecognized_opts" ;;
+    *)     $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2 ;;
+  esac
+fi
+
+# Check all directory arguments for consistency.
+for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
+		datadir sysconfdir sharedstatedir localstatedir includedir \
+		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
+		libdir localedir mandir
+do
+  eval ac_val=\$$ac_var
+  # Remove trailing slashes.
+  case $ac_val in
+    */ )
+      ac_val=`expr "X$ac_val" : 'X\(.*[^/]\)' \| "X$ac_val" : 'X\(.*\)'`
+      eval $ac_var=\$ac_val;;
+  esac
+  # Be sure to have absolute directory names.
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* )  continue;;
+    NONE | '' ) case $ac_var in *prefix ) continue;; esac;;
+  esac
+  as_fn_error $? "expected an absolute directory name for --$ac_var: $ac_val"
+done
+
+# There might be people who depend on the old broken behavior: `$host'
+# used to hold the argument of --host etc.
+# FIXME: To remove some day.
+build=$build_alias
+host=$host_alias
+target=$target_alias
+
+# FIXME: To remove some day.
+if test "x$host_alias" != x; then
+  if test "x$build_alias" = x; then
+    cross_compiling=maybe
+  elif test "x$build_alias" != "x$host_alias"; then
+    cross_compiling=yes
+  fi
+fi
+
+ac_tool_prefix=
+test -n "$host_alias" && ac_tool_prefix=$host_alias-
+
+test "$silent" = yes && exec 6>/dev/null
+
+
+ac_pwd=`pwd` && test -n "$ac_pwd" &&
+ac_ls_di=`ls -di .` &&
+ac_pwd_ls_di=`cd "$ac_pwd" && ls -di .` ||
+  as_fn_error $? "working directory cannot be determined"
+test "X$ac_ls_di" = "X$ac_pwd_ls_di" ||
+  as_fn_error $? "pwd does not report name of working directory"
+
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  ac_srcdir_defaulted=yes
+  # Try the directory containing this script, then the parent directory.
+  ac_confdir=`$as_dirname -- "$as_myself" ||
+$as_expr X"$as_myself" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_myself" : 'X\(//\)[^/]' \| \
+	 X"$as_myself" : 'X\(//\)$' \| \
+	 X"$as_myself" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_myself" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  srcdir=$ac_confdir
+  if test ! -r "$srcdir/$ac_unique_file"; then
+    srcdir=..
+  fi
+else
+  ac_srcdir_defaulted=no
+fi
+if test ! -r "$srcdir/$ac_unique_file"; then
+  test "$ac_srcdir_defaulted" = yes && srcdir="$ac_confdir or .."
+  as_fn_error $? "cannot find sources ($ac_unique_file) in $srcdir"
+fi
+ac_msg="sources are in $srcdir, but \`cd $srcdir' does not work"
+ac_abs_confdir=`(
+	cd "$srcdir" && test -r "./$ac_unique_file" || as_fn_error $? "$ac_msg"
+	pwd)`
+# When building in place, set srcdir=.
+if test "$ac_abs_confdir" = "$ac_pwd"; then
+  srcdir=.
+fi
+# Remove unnecessary trailing slashes from srcdir.
+# Double slashes in file names in object file debugging info
+# mess up M-x gdb in Emacs.
+case $srcdir in
+*/) srcdir=`expr "X$srcdir" : 'X\(.*[^/]\)' \| "X$srcdir" : 'X\(.*\)'`;;
+esac
+for ac_var in $ac_precious_vars; do
+  eval ac_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_env_${ac_var}_value=\$${ac_var}
+  eval ac_cv_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_cv_env_${ac_var}_value=\$${ac_var}
+done
+
+#
+# Report the --help message.
+#
+if test "$ac_init_help" = "long"; then
+  # Omit some internal or obsolete options to make the list less imposing.
+  # This message is too long to be a string in the A/UX 3.1 sh.
+  cat <<_ACEOF
+\`configure' configures FlexDLL 0.35 to adapt to many kinds of systems.
+
+Usage: $0 [OPTION]... [VAR=VALUE]...
+
+To assign environment variables (e.g., CC, CFLAGS...), specify them as
+VAR=VALUE.  See below for descriptions of some of the useful variables.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
+  -h, --help              display this help and exit
+      --help=short        display options specific to this package
+      --help=recursive    display the short help of all the included packages
+  -V, --version           display version information and exit
+  -q, --quiet, --silent   do not print \`checking ...' messages
+      --cache-file=FILE   cache test results in FILE [disabled]
+  -C, --config-cache      alias for \`--cache-file=config.cache'
+  -n, --no-create         do not create output files
+      --srcdir=DIR        find the sources in DIR [configure dir or \`..']
+
+Installation directories:
+  --prefix=PREFIX         install architecture-independent files in PREFIX
+                          [$ac_default_prefix]
+  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
+                          [PREFIX]
+
+By default, \`make install' will install all the files in
+\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc.  You can specify
+an installation prefix other than \`$ac_default_prefix' using \`--prefix',
+for instance \`--prefix=\$HOME'.
+
+For better control, use the options below.
+
+Fine tuning of the installation directories:
+  --bindir=DIR            user executables [EPREFIX/bin]
+  --sbindir=DIR           system admin executables [EPREFIX/sbin]
+  --libexecdir=DIR        program executables [EPREFIX/libexec]
+  --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
+  --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
+  --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --libdir=DIR            object code libraries [EPREFIX/lib]
+  --includedir=DIR        C header files [PREFIX/include]
+  --oldincludedir=DIR     C header files for non-gcc [/usr/include]
+  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
+  --datadir=DIR           read-only architecture-independent data [DATAROOTDIR]
+  --infodir=DIR           info documentation [DATAROOTDIR/info]
+  --localedir=DIR         locale-dependent data [DATAROOTDIR/locale]
+  --mandir=DIR            man documentation [DATAROOTDIR/man]
+  --docdir=DIR            documentation root [DATAROOTDIR/doc/flexdll]
+  --htmldir=DIR           html documentation [DOCDIR]
+  --dvidir=DIR            dvi documentation [DOCDIR]
+  --pdfdir=DIR            pdf documentation [DOCDIR]
+  --psdir=DIR             ps documentation [DOCDIR]
+_ACEOF
+
+  cat <<\_ACEOF
+_ACEOF
+fi
+
+if test -n "$ac_init_help"; then
+  case $ac_init_help in
+     short | recursive ) echo "Configuration of FlexDLL 0.35:";;
+   esac
+  cat <<\_ACEOF
+
+Some influential environment variables:
+  MINGW_PREFIX
+              Prefix for the mingw-w64 i686 cross-compiler
+  MINGW64_PREFIX
+              Prefix for the mingw-w64 x64 cross-compiler
+
+Use these variables to override the choices made by `configure' or to help
+it to find libraries and programs with nonstandard names/locations.
+
+Report bugs to <alain@frisch.fr>.
+FlexDLL home page: <http://alain.frisch.fr/flexdll.html>.
+_ACEOF
+ac_status=$?
+fi
+
+if test "$ac_init_help" = "recursive"; then
+  # If there are subdirs, report their specific --help.
+  for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
+    test -d "$ac_dir" ||
+      { cd "$srcdir" && ac_pwd=`pwd` && srcdir=. && test -d "$ac_dir"; } ||
+      continue
+    ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+    cd "$ac_dir" || { ac_status=$?; continue; }
+    # Check for guested configure.
+    if test -f "$ac_srcdir/configure.gnu"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure.gnu" --help=recursive
+    elif test -f "$ac_srcdir/configure"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure" --help=recursive
+    else
+      $as_echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
+    fi || ac_status=$?
+    cd "$ac_pwd" || { ac_status=$?; break; }
+  done
+fi
+
+test -n "$ac_init_help" && exit $ac_status
+if $ac_init_version; then
+  cat <<\_ACEOF
+FlexDLL configure 0.35
+generated by GNU Autoconf 2.69
+
+Copyright (C) 2012 Free Software Foundation, Inc.
+This configure script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it.
+_ACEOF
+  exit
+fi
+
+## ------------------------ ##
+## Autoconf initialization. ##
+## ------------------------ ##
+cat >config.log <<_ACEOF
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by FlexDLL $as_me 0.35, which was
+generated by GNU Autoconf 2.69.  Invocation command line was
+
+  $ $0 $@
+
+_ACEOF
+exec 5>>config.log
+{
+cat <<_ASUNAME
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null     || echo unknown`
+
+/bin/arch              = `(/bin/arch) 2>/dev/null              || echo unknown`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null       || echo unknown`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
+/usr/bin/hostinfo      = `(/usr/bin/hostinfo) 2>/dev/null      || echo unknown`
+/bin/machine           = `(/bin/machine) 2>/dev/null           || echo unknown`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null       || echo unknown`
+/bin/universe          = `(/bin/universe) 2>/dev/null          || echo unknown`
+
+_ASUNAME
+
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    $as_echo "PATH: $as_dir"
+  done
+IFS=$as_save_IFS
+
+} >&5
+
+cat >&5 <<_ACEOF
+
+
+## ----------- ##
+## Core tests. ##
+## ----------- ##
+
+_ACEOF
+
+
+# Keep a trace of the command line.
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Strip out --silent because we don't want to record it for future runs.
+# Also quote any args containing shell meta-characters.
+# Make two passes to allow for proper duplicate-argument suppression.
+ac_configure_args=
+ac_configure_args0=
+ac_configure_args1=
+ac_must_keep_next=false
+for ac_pass in 1 2
+do
+  for ac_arg
+  do
+    case $ac_arg in
+    -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
+    -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+    | -silent | --silent | --silen | --sile | --sil)
+      continue ;;
+    *\'*)
+      ac_arg=`$as_echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    case $ac_pass in
+    1) as_fn_append ac_configure_args0 " '$ac_arg'" ;;
+    2)
+      as_fn_append ac_configure_args1 " '$ac_arg'"
+      if test $ac_must_keep_next = true; then
+	ac_must_keep_next=false # Got value, back to normal.
+      else
+	case $ac_arg in
+	  *=* | --config-cache | -C | -disable-* | --disable-* \
+	  | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
+	  | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
+	  | -with-* | --with-* | -without-* | --without-* | --x)
+	    case "$ac_configure_args0 " in
+	      "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
+	    esac
+	    ;;
+	  -* ) ac_must_keep_next=true ;;
+	esac
+      fi
+      as_fn_append ac_configure_args " '$ac_arg'"
+      ;;
+    esac
+  done
+done
+{ ac_configure_args0=; unset ac_configure_args0;}
+{ ac_configure_args1=; unset ac_configure_args1;}
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log.  We remove comments because anyway the quotes in there
+# would cause problems or look ugly.
+# WARNING: Use '\'' to represent an apostrophe within the trap.
+# WARNING: Do not start the trap code with a newline, due to a FreeBSD 4.0 bug.
+trap 'exit_status=$?
+  # Save into config.log some information that might help in debugging.
+  {
+    echo
+
+    $as_echo "## ---------------- ##
+## Cache variables. ##
+## ---------------- ##"
+    echo
+    # The following way of writing the cache mishandles newlines in values,
+(
+  for ac_var in `(set) 2>&1 | sed -n '\''s/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'\''`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+  (set) 2>&1 |
+    case $as_nl`(ac_space='\'' '\''; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      sed -n \
+	"s/'\''/'\''\\\\'\'''\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\''\\2'\''/p"
+      ;; #(
+    *)
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+)
+    echo
+
+    $as_echo "## ----------------- ##
+## Output variables. ##
+## ----------------- ##"
+    echo
+    for ac_var in $ac_subst_vars
+    do
+      eval ac_val=\$$ac_var
+      case $ac_val in
+      *\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+      esac
+      $as_echo "$ac_var='\''$ac_val'\''"
+    done | sort
+    echo
+
+    if test -n "$ac_subst_files"; then
+      $as_echo "## ------------------- ##
+## File substitutions. ##
+## ------------------- ##"
+      echo
+      for ac_var in $ac_subst_files
+      do
+	eval ac_val=\$$ac_var
+	case $ac_val in
+	*\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+	esac
+	$as_echo "$ac_var='\''$ac_val'\''"
+      done | sort
+      echo
+    fi
+
+    if test -s confdefs.h; then
+      $as_echo "## ----------- ##
+## confdefs.h. ##
+## ----------- ##"
+      echo
+      cat confdefs.h
+      echo
+    fi
+    test "$ac_signal" != 0 &&
+      $as_echo "$as_me: caught signal $ac_signal"
+    $as_echo "$as_me: exit $exit_status"
+  } >&5
+  rm -f core *.core core.conftest.* &&
+    rm -f -r conftest* confdefs* conf$$* $ac_clean_files &&
+    exit $exit_status
+' 0
+for ac_signal in 1 2 13 15; do
+  trap 'ac_signal='$ac_signal'; as_fn_exit 1' $ac_signal
+done
+ac_signal=0
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -f -r conftest* confdefs.h
+
+$as_echo "/* confdefs.h */" > confdefs.h
+
+# Predefined preprocessor variables.
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_NAME "$PACKAGE_NAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_TARNAME "$PACKAGE_TARNAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_VERSION "$PACKAGE_VERSION"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_STRING "$PACKAGE_STRING"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_BUGREPORT "$PACKAGE_BUGREPORT"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_URL "$PACKAGE_URL"
+_ACEOF
+
+
+# Let the site file select an alternate cache file if it wants to.
+# Prefer an explicitly selected file to automatically selected ones.
+ac_site_file1=NONE
+ac_site_file2=NONE
+if test -n "$CONFIG_SITE"; then
+  # We do not want a PATH search for config.site.
+  case $CONFIG_SITE in #((
+    -*)  ac_site_file1=./$CONFIG_SITE;;
+    */*) ac_site_file1=$CONFIG_SITE;;
+    *)   ac_site_file1=./$CONFIG_SITE;;
+  esac
+elif test "x$prefix" != xNONE; then
+  ac_site_file1=$prefix/share/config.site
+  ac_site_file2=$prefix/etc/config.site
+else
+  ac_site_file1=$ac_default_prefix/share/config.site
+  ac_site_file2=$ac_default_prefix/etc/config.site
+fi
+for ac_site_file in "$ac_site_file1" "$ac_site_file2"
+do
+  test "x$ac_site_file" = xNONE && continue
+  if test /dev/null != "$ac_site_file" && test -r "$ac_site_file"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
+$as_echo "$as_me: loading site script $ac_site_file" >&6;}
+    sed 's/^/| /' "$ac_site_file" >&5
+    . "$ac_site_file" \
+      || { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "failed to load site script $ac_site_file
+See \`config.log' for more details" "$LINENO" 5; }
+  fi
+done
+
+if test -r "$cache_file"; then
+  # Some versions of bash will fail to source /dev/null (special files
+  # actually), so we avoid doing that.  DJGPP emulates it as a regular file.
+  if test /dev/null != "$cache_file" && test -f "$cache_file"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5
+$as_echo "$as_me: loading cache $cache_file" >&6;}
+    case $cache_file in
+      [\\/]* | ?:[\\/]* ) . "$cache_file";;
+      *)                      . "./$cache_file";;
+    esac
+  fi
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5
+$as_echo "$as_me: creating cache $cache_file" >&6;}
+  >$cache_file
+fi
+
+# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in $ac_precious_vars; do
+  eval ac_old_set=\$ac_cv_env_${ac_var}_set
+  eval ac_new_set=\$ac_env_${ac_var}_set
+  eval ac_old_val=\$ac_cv_env_${ac_var}_value
+  eval ac_new_val=\$ac_env_${ac_var}_value
+  case $ac_old_set,$ac_new_set in
+    set,)
+      { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,set)
+      { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,);;
+    *)
+      if test "x$ac_old_val" != "x$ac_new_val"; then
+	# differences in whitespace do not lead to failure.
+	ac_old_val_w=`echo x $ac_old_val`
+	ac_new_val_w=`echo x $ac_new_val`
+	if test "$ac_old_val_w" != "$ac_new_val_w"; then
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5
+$as_echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+	  ac_cache_corrupted=:
+	else
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5
+$as_echo "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;}
+	  eval $ac_var=\$ac_old_val
+	fi
+	{ $as_echo "$as_me:${as_lineno-$LINENO}:   former value:  \`$ac_old_val'" >&5
+$as_echo "$as_me:   former value:  \`$ac_old_val'" >&2;}
+	{ $as_echo "$as_me:${as_lineno-$LINENO}:   current value: \`$ac_new_val'" >&5
+$as_echo "$as_me:   current value: \`$ac_new_val'" >&2;}
+      fi;;
+  esac
+  # Pass precious variables to config.status.
+  if test "$ac_new_set" = set; then
+    case $ac_new_val in
+    *\'*) ac_arg=$ac_var=`$as_echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *) ac_arg=$ac_var=$ac_new_val ;;
+    esac
+    case " $ac_configure_args " in
+      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
+      *) as_fn_append ac_configure_args " '$ac_arg'" ;;
+    esac
+  fi
+done
+if $ac_cache_corrupted; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+  { $as_echo "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
+$as_echo "$as_me: error: changes in the environment can compromise the build" >&2;}
+  as_fn_error $? "run \`make distclean' and/or \`rm $cache_file' and start over" "$LINENO" 5
+fi
+## -------------------- ##
+## Main body of script. ##
+## -------------------- ##
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+#AC_COPYRIGHT(Copyright 2016 ?)
+
+
+
+if test x"${MINGW_PREFIX}" = x""; then :
+  MINGW_PREFIX=i686-w64-mingw32
+fi
+if test x"${MINGW64_PREFIX}" = x""; then :
+  MINGW64_PREFIX=x86_64-w64-mingw32
+fi
+
+
+
+
+# Check for "Cygwin" compilers
+CHAINS=
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}${MINGW_PREFIX}-gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}${MINGW_PREFIX}-gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_MINCC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$MINCC"; then
+  ac_cv_prog_MINCC="$MINCC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_MINCC="${ac_tool_prefix}${MINGW_PREFIX}-gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+MINCC=$ac_cv_prog_MINCC
+if test -n "$MINCC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MINCC" >&5
+$as_echo "$MINCC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_MINCC"; then
+  ac_ct_MINCC=$MINCC
+  # Extract the first word of "${MINGW_PREFIX}-gcc", so it can be a program name with args.
+set dummy ${MINGW_PREFIX}-gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_MINCC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_MINCC"; then
+  ac_cv_prog_ac_ct_MINCC="$ac_ct_MINCC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_MINCC="${MINGW_PREFIX}-gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_MINCC=$ac_cv_prog_ac_ct_MINCC
+if test -n "$ac_ct_MINCC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_MINCC" >&5
+$as_echo "$ac_ct_MINCC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_MINCC" = x; then
+    MINCC="no"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    MINCC=$ac_ct_MINCC
+  fi
+else
+  MINCC="$ac_cv_prog_MINCC"
+fi
+
+if test "${MINCC}" != "no"; then :
+  CHAINS=" mingw"
+fi
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}${MINGW64_PREFIX}-gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}${MINGW64_PREFIX}-gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_MIN64CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$MIN64CC"; then
+  ac_cv_prog_MIN64CC="$MIN64CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_MIN64CC="${ac_tool_prefix}${MINGW64_PREFIX}-gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+MIN64CC=$ac_cv_prog_MIN64CC
+if test -n "$MIN64CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MIN64CC" >&5
+$as_echo "$MIN64CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_MIN64CC"; then
+  ac_ct_MIN64CC=$MIN64CC
+  # Extract the first word of "${MINGW64_PREFIX}-gcc", so it can be a program name with args.
+set dummy ${MINGW64_PREFIX}-gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_MIN64CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_MIN64CC"; then
+  ac_cv_prog_ac_ct_MIN64CC="$ac_ct_MIN64CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_MIN64CC="${MINGW64_PREFIX}-gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_MIN64CC=$ac_cv_prog_ac_ct_MIN64CC
+if test -n "$ac_ct_MIN64CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_MIN64CC" >&5
+$as_echo "$ac_ct_MIN64CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_MIN64CC" = x; then
+    MIN64CC="no"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    MIN64CC=$ac_ct_MIN64CC
+  fi
+else
+  MIN64CC="$ac_cv_prog_MIN64CC"
+fi
+
+if test "${MIN64CC}" != "no"; then :
+  CHAINS="${CHAINS} mingw64"
+fi
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}i686-pc-cygwin-gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}i686-pc-cygwin-gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CYGCC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CYGCC"; then
+  ac_cv_prog_CYGCC="$CYGCC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CYGCC="${ac_tool_prefix}i686-pc-cygwin-gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CYGCC=$ac_cv_prog_CYGCC
+if test -n "$CYGCC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CYGCC" >&5
+$as_echo "$CYGCC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CYGCC"; then
+  ac_ct_CYGCC=$CYGCC
+  # Extract the first word of "i686-pc-cygwin-gcc", so it can be a program name with args.
+set dummy i686-pc-cygwin-gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_CYGCC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CYGCC"; then
+  ac_cv_prog_ac_ct_CYGCC="$ac_ct_CYGCC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CYGCC="i686-pc-cygwin-gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CYGCC=$ac_cv_prog_ac_ct_CYGCC
+if test -n "$ac_ct_CYGCC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CYGCC" >&5
+$as_echo "$ac_ct_CYGCC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_CYGCC" = x; then
+    CYGCC="no"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CYGCC=$ac_ct_CYGCC
+  fi
+else
+  CYGCC="$ac_cv_prog_CYGCC"
+fi
+
+if test "${CYGCC}" != "no"; then :
+  CHAINS="${CHAINS} cygwin"
+fi
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}x86_64-pc-cygwin-gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}x86_64-pc-cygwin-gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CYG64CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CYG64CC"; then
+  ac_cv_prog_CYG64CC="$CYG64CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CYG64CC="${ac_tool_prefix}x86_64-pc-cygwin-gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CYG64CC=$ac_cv_prog_CYG64CC
+if test -n "$CYG64CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CYG64CC" >&5
+$as_echo "$CYG64CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CYG64CC"; then
+  ac_ct_CYG64CC=$CYG64CC
+  # Extract the first word of "x86_64-pc-cygwin-gcc", so it can be a program name with args.
+set dummy x86_64-pc-cygwin-gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_CYG64CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CYG64CC"; then
+  ac_cv_prog_ac_ct_CYG64CC="$ac_ct_CYG64CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CYG64CC="x86_64-pc-cygwin-gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CYG64CC=$ac_cv_prog_ac_ct_CYG64CC
+if test -n "$ac_ct_CYG64CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CYG64CC" >&5
+$as_echo "$ac_ct_CYG64CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_CYG64CC" = x; then
+    CYG64CC="no"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CYG64CC=$ac_ct_CYG64CC
+  fi
+else
+  CYG64CC="$ac_cv_prog_CYG64CC"
+fi
+
+if test "${CYG64CC}" != "no"; then :
+  CHAINS="${CHAINS} cygwin64"
+fi
+
+# Check for Microsoft compilers
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for an installed pair of Microsoft C Compilers" >&5
+$as_echo_n "checking for an installed pair of Microsoft C Compilers... " >&6; }
+MSVS_PATH=no
+eval `./msvs-detect --with-assembler --with-mt`
+MS_CHAINS=
+if test "${MSVS_PATH}" = "no"; then :
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for an installed x86 Microsoft C Compiler" >&5
+$as_echo_n "checking for an installed x86 Microsoft C Compiler... " >&6; }
+  eval `./msvs-detect --with-assembler --with-mt --arch=x86`
+  if test "${MSVS_PATH}" = "no"; then :
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+
+else
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${MSVS_NAME}" >&5
+$as_echo "${MSVS_NAME}" >&6; }
+    CHAINS="${CHAINS} msvc"
+
+
+
+
+fi
+
+else
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${MSVS_NAME}" >&5
+$as_echo "${MSVS_NAME}" >&6; }
+  CHAINS="${CHAINS} msvc msvc64"
+
+
+
+
+
+
+
+fi
+
+
+# Check for OCaml
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ocamlopt", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ocamlopt; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_HAVE_OCAMLOPT+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$HAVE_OCAMLOPT"; then
+  ac_cv_prog_HAVE_OCAMLOPT="$HAVE_OCAMLOPT" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_HAVE_OCAMLOPT="${ac_tool_prefix}ocamlopt"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+HAVE_OCAMLOPT=$ac_cv_prog_HAVE_OCAMLOPT
+if test -n "$HAVE_OCAMLOPT"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $HAVE_OCAMLOPT" >&5
+$as_echo "$HAVE_OCAMLOPT" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_HAVE_OCAMLOPT"; then
+  ac_ct_HAVE_OCAMLOPT=$HAVE_OCAMLOPT
+  # Extract the first word of "ocamlopt", so it can be a program name with args.
+set dummy ocamlopt; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_HAVE_OCAMLOPT+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_HAVE_OCAMLOPT"; then
+  ac_cv_prog_ac_ct_HAVE_OCAMLOPT="$ac_ct_HAVE_OCAMLOPT" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_HAVE_OCAMLOPT="ocamlopt"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_HAVE_OCAMLOPT=$ac_cv_prog_ac_ct_HAVE_OCAMLOPT
+if test -n "$ac_ct_HAVE_OCAMLOPT"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_HAVE_OCAMLOPT" >&5
+$as_echo "$ac_ct_HAVE_OCAMLOPT" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_HAVE_OCAMLOPT" = x; then
+    HAVE_OCAMLOPT="no"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    HAVE_OCAMLOPT=$ac_ct_HAVE_OCAMLOPT
+  fi
+else
+  HAVE_OCAMLOPT="$ac_cv_prog_HAVE_OCAMLOPT"
+fi
+
+
+ac_config_files="$ac_config_files Makefile.config version.ml"
+
+cat >confcache <<\_ACEOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs, see configure's option --config-cache.
+# It is not useful on other systems.  If it contains results you don't
+# want to keep, you may remove or edit it.
+#
+# config.status only pays attention to the cache file if you give it
+# the --recheck option to rerun configure.
+#
+# `ac_cv_env_foo' variables (set or unset) will be overridden when
+# loading this file, other *unset* `ac_cv_foo' will be assigned the
+# following values.
+
+_ACEOF
+
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, we kill variables containing newlines.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+(
+  for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+
+  (set) 2>&1 |
+    case $as_nl`(ac_space=' '; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      # `set' does not quote correctly, so add quotes: double-quote
+      # substitution turns \\\\ into \\, and sed turns \\ into \.
+      sed -n \
+	"s/'/'\\\\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
+      ;; #(
+    *)
+      # `set' quotes correctly as required by POSIX, so do not add quotes.
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+) |
+  sed '
+     /^ac_cv_env_/b end
+     t clear
+     :clear
+     s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/
+     t end
+     s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
+     :end' >>confcache
+if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
+  if test -w "$cache_file"; then
+    if test "x$cache_file" != "x/dev/null"; then
+      { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
+$as_echo "$as_me: updating cache $cache_file" >&6;}
+      if test ! -f "$cache_file" || test -h "$cache_file"; then
+	cat confcache >"$cache_file"
+      else
+        case $cache_file in #(
+        */* | ?:*)
+	  mv -f confcache "$cache_file"$$ &&
+	  mv -f "$cache_file"$$ "$cache_file" ;; #(
+        *)
+	  mv -f confcache "$cache_file" ;;
+	esac
+      fi
+    fi
+  else
+    { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
+$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;}
+  fi
+fi
+rm -f confcache
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+# Transform confdefs.h into DEFS.
+# Protect against shell expansion while executing Makefile rules.
+# Protect against Makefile macro expansion.
+#
+# If the first sed substitution is executed (which looks for macros that
+# take arguments), then branch to the quote section.  Otherwise,
+# look for a macro that doesn't take arguments.
+ac_script='
+:mline
+/\\$/{
+ N
+ s,\\\n,,
+ b mline
+}
+t clear
+:clear
+s/^[	 ]*#[	 ]*define[	 ][	 ]*\([^	 (][^	 (]*([^)]*)\)[	 ]*\(.*\)/-D\1=\2/g
+t quote
+s/^[	 ]*#[	 ]*define[	 ][	 ]*\([^	 ][^	 ]*\)[	 ]*\(.*\)/-D\1=\2/g
+t quote
+b any
+:quote
+s/[	 `~#$^&*(){}\\|;'\''"<>?]/\\&/g
+s/\[/\\&/g
+s/\]/\\&/g
+s/\$/$$/g
+H
+:any
+${
+	g
+	s/^\n//
+	s/\n/ /g
+	p
+}
+'
+DEFS=`sed -n "$ac_script" confdefs.h`
+
+
+ac_libobjs=
+ac_ltlibobjs=
+U=
+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
+  # 1. Remove the extension, and $U if already installed.
+  ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
+  ac_i=`$as_echo "$ac_i" | sed "$ac_script"`
+  # 2. Prepend LIBOBJDIR.  When used with automake>=1.10 LIBOBJDIR
+  #    will be set to the directory where LIBOBJS objects are built.
+  as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext"
+  as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo'
+done
+LIBOBJS=$ac_libobjs
+
+LTLIBOBJS=$ac_ltlibobjs
+
+
+
+: "${CONFIG_STATUS=./config.status}"
+ac_write_fail=0
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files $CONFIG_STATUS"
+{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5
+$as_echo "$as_me: creating $CONFIG_STATUS" >&6;}
+as_write_fail=0
+cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+
+debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
+
+SHELL=\${CONFIG_SHELL-$SHELL}
+export SHELL
+_ASEOF
+cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='print -r --'
+  as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='printf %s\n'
+  as_echo_n='printf %s'
+else
+  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+    as_echo_n='/usr/ucb/echo -n'
+  else
+    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+    as_echo_n_body='eval
+      arg=$1;
+      case $arg in #(
+      *"$as_nl"*)
+	expr "X$arg" : "X\\(.*\\)$as_nl";
+	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+      esac;
+      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+    '
+    export as_echo_n_body
+    as_echo_n='sh -c $as_echo_n_body as_echo'
+  fi
+  export as_echo_body
+  as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" ""	$as_nl"
+
+# Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there.  '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with STATUS, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$1; test $as_status -eq 0 && as_status=1
+  if test "$4"; then
+    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+  fi
+  $as_echo "$as_me: error: $2" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -pR'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -pR'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -pR'
+  fi
+else
+  as_ln_s='cp -pR'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+  test -f "$1" && test -x "$1"
+} # as_fn_executable_p
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+exec 6>&1
+## ----------------------------------- ##
+## Main body of $CONFIG_STATUS script. ##
+## ----------------------------------- ##
+_ASEOF
+test $as_write_fail = 0 && chmod +x $CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# Save the log message, to keep $0 and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.
+ac_log="
+This file was extended by FlexDLL $as_me 0.35, which was
+generated by GNU Autoconf 2.69.  Invocation command line was
+
+  CONFIG_FILES    = $CONFIG_FILES
+  CONFIG_HEADERS  = $CONFIG_HEADERS
+  CONFIG_LINKS    = $CONFIG_LINKS
+  CONFIG_COMMANDS = $CONFIG_COMMANDS
+  $ $0 $@
+
+on `(hostname || uname -n) 2>/dev/null | sed 1q`
+"
+
+_ACEOF
+
+case $ac_config_files in *"
+"*) set x $ac_config_files; shift; ac_config_files=$*;;
+esac
+
+
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+# Files that config.status was made for.
+config_files="$ac_config_files"
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+ac_cs_usage="\
+\`$as_me' instantiates files and other configuration actions
+from templates according to the current configuration.  Unless the files
+and actions are specified as TAGs, all are instantiated by default.
+
+Usage: $0 [OPTION]... [TAG]...
+
+  -h, --help       print this help, then exit
+  -V, --version    print version number and configuration settings, then exit
+      --config     print configuration, then exit
+  -q, --quiet, --silent
+                   do not print progress messages
+  -d, --debug      don't remove temporary files
+      --recheck    update $as_me by reconfiguring in the same conditions
+      --file=FILE[:TEMPLATE]
+                   instantiate the configuration file FILE
+
+Configuration files:
+$config_files
+
+Report bugs to <alain@frisch.fr>.
+FlexDLL home page: <http://alain.frisch.fr/flexdll.html>."
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
+ac_cs_version="\\
+FlexDLL config.status 0.35
+configured by $0, generated by GNU Autoconf 2.69,
+  with options \\"\$ac_cs_config\\"
+
+Copyright (C) 2012 Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+
+ac_pwd='$ac_pwd'
+srcdir='$srcdir'
+test -n "\$AWK" || AWK=awk
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# The default lists apply if the user does not specify any file.
+ac_need_defaults=:
+while test $# != 0
+do
+  case $1 in
+  --*=?*)
+    ac_option=`expr "X$1" : 'X\([^=]*\)='`
+    ac_optarg=`expr "X$1" : 'X[^=]*=\(.*\)'`
+    ac_shift=:
+    ;;
+  --*=)
+    ac_option=`expr "X$1" : 'X\([^=]*\)='`
+    ac_optarg=
+    ac_shift=:
+    ;;
+  *)
+    ac_option=$1
+    ac_optarg=$2
+    ac_shift=shift
+    ;;
+  esac
+
+  case $ac_option in
+  # Handling of the options.
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    ac_cs_recheck=: ;;
+  --version | --versio | --versi | --vers | --ver | --ve | --v | -V )
+    $as_echo "$ac_cs_version"; exit ;;
+  --config | --confi | --conf | --con | --co | --c )
+    $as_echo "$ac_cs_config"; exit ;;
+  --debug | --debu | --deb | --de | --d | -d )
+    debug=: ;;
+  --file | --fil | --fi | --f )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    '') as_fn_error $? "missing file argument" ;;
+    esac
+    as_fn_append CONFIG_FILES " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --he | --h |  --help | --hel | -h )
+    $as_echo "$ac_cs_usage"; exit ;;
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil | --si | --s)
+    ac_cs_silent=: ;;
+
+  # This is an error.
+  -*) as_fn_error $? "unrecognized option: \`$1'
+Try \`$0 --help' for more information." ;;
+
+  *) as_fn_append ac_config_targets " $1"
+     ac_need_defaults=false ;;
+
+  esac
+  shift
+done
+
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+  exec 6>/dev/null
+  ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+if \$ac_cs_recheck; then
+  set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+  shift
+  \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
+  CONFIG_SHELL='$SHELL'
+  export CONFIG_SHELL
+  exec "\$@"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+exec 5>>config.log
+{
+  echo
+  sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+  $as_echo "$ac_log"
+} >&5
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+
+# Handling of arguments.
+for ac_config_target in $ac_config_targets
+do
+  case $ac_config_target in
+    "Makefile.config") CONFIG_FILES="$CONFIG_FILES Makefile.config" ;;
+    "version.ml") CONFIG_FILES="$CONFIG_FILES version.ml" ;;
+
+  *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
+  esac
+done
+
+
+# If the user did not use the arguments to specify the items to instantiate,
+# then the envvar interface is used.  Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
+if $ac_need_defaults; then
+  test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
+fi
+
+# Have a temporary directory for convenience.  Make it in the build tree
+# simply because there is no reason against having it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Hook for its removal unless debugging.
+# Note that there is a small window in which the directory will not be cleaned:
+# after its creation but before its name has been assigned to `$tmp'.
+$debug ||
+{
+  tmp= ac_tmp=
+  trap 'exit_status=$?
+  : "${ac_tmp:=$tmp}"
+  { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status
+' 0
+  trap 'as_fn_exit 1' 1 2 13 15
+}
+# Create a (secure) tmp directory for tmp files.
+
+{
+  tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&
+  test -d "$tmp"
+}  ||
+{
+  tmp=./conf$$-$RANDOM
+  (umask 077 && mkdir "$tmp")
+} || as_fn_error $? "cannot create a temporary directory in ." "$LINENO" 5
+ac_tmp=$tmp
+
+# Set up the scripts for CONFIG_FILES section.
+# No need to generate them if there are no CONFIG_FILES.
+# This happens for instance with `./config.status config.h'.
+if test -n "$CONFIG_FILES"; then
+
+
+ac_cr=`echo X | tr X '\015'`
+# On cygwin, bash can eat \r inside `` if the user requested igncr.
+# But we know of no other shell where ac_cr would be empty at this
+# point, so we can use a bashism as a fallback.
+if test "x$ac_cr" = x; then
+  eval ac_cr=\$\'\\r\'
+fi
+ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' </dev/null 2>/dev/null`
+if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then
+  ac_cs_awk_cr='\\r'
+else
+  ac_cs_awk_cr=$ac_cr
+fi
+
+echo 'BEGIN {' >"$ac_tmp/subs1.awk" &&
+_ACEOF
+
+
+{
+  echo "cat >conf$$subs.awk <<_ACEOF" &&
+  echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/' &&
+  echo "_ACEOF"
+} >conf$$subs.sh ||
+  as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+ac_delim_num=`echo "$ac_subst_vars" | grep -c '^'`
+ac_delim='%!_!# '
+for ac_last_try in false false false false false :; do
+  . ./conf$$subs.sh ||
+    as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+
+  ac_delim_n=`sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | grep -c X`
+  if test $ac_delim_n = $ac_delim_num; then
+    break
+  elif $ac_last_try; then
+    as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+rm -f conf$$subs.sh
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"\$ac_tmp/subs1.awk" <<\\_ACAWK &&
+_ACEOF
+sed -n '
+h
+s/^/S["/; s/!.*/"]=/
+p
+g
+s/^[^!]*!//
+:repl
+t repl
+s/'"$ac_delim"'$//
+t delim
+:nl
+h
+s/\(.\{148\}\)..*/\1/
+t more1
+s/["\\]/\\&/g; s/^/"/; s/$/\\n"\\/
+p
+n
+b repl
+:more1
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t nl
+:delim
+h
+s/\(.\{148\}\)..*/\1/
+t more2
+s/["\\]/\\&/g; s/^/"/; s/$/"/
+p
+b
+:more2
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t delim
+' <conf$$subs.awk | sed '
+/^[^""]/{
+  N
+  s/\n//
+}
+' >>$CONFIG_STATUS || ac_write_fail=1
+rm -f conf$$subs.awk
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+_ACAWK
+cat >>"\$ac_tmp/subs1.awk" <<_ACAWK &&
+  for (key in S) S_is_set[key] = 1
+  FS = ""
+
+}
+{
+  line = $ 0
+  nfields = split(line, field, "@")
+  substed = 0
+  len = length(field[1])
+  for (i = 2; i < nfields; i++) {
+    key = field[i]
+    keylen = length(key)
+    if (S_is_set[key]) {
+      value = S[key]
+      line = substr(line, 1, len) "" value "" substr(line, len + keylen + 3)
+      len += length(value) + length(field[++i])
+      substed = 1
+    } else
+      len += 1 + keylen
+  }
+
+  print line
+}
+
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+if sed "s/$ac_cr//" < /dev/null > /dev/null 2>&1; then
+  sed "s/$ac_cr\$//; s/$ac_cr/$ac_cs_awk_cr/g"
+else
+  cat
+fi < "$ac_tmp/subs1.awk" > "$ac_tmp/subs.awk" \
+  || as_fn_error $? "could not setup config files machinery" "$LINENO" 5
+_ACEOF
+
+# VPATH may cause trouble with some makes, so we remove sole $(srcdir),
+# ${srcdir} and @srcdir@ entries from VPATH if srcdir is ".", strip leading and
+# trailing colons and then remove the whole line if VPATH becomes empty
+# (actually we leave an empty line to preserve line numbers).
+if test "x$srcdir" = x.; then
+  ac_vpsub='/^[	 ]*VPATH[	 ]*=[	 ]*/{
+h
+s///
+s/^/:/
+s/[	 ]*$/:/
+s/:\$(srcdir):/:/g
+s/:\${srcdir}:/:/g
+s/:@srcdir@:/:/g
+s/^:*//
+s/:*$//
+x
+s/\(=[	 ]*\).*/\1/
+G
+s/\n//
+s/^[^=]*=[	 ]*$//
+}'
+fi
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+fi # test -n "$CONFIG_FILES"
+
+
+eval set X "  :F $CONFIG_FILES      "
+shift
+for ac_tag
+do
+  case $ac_tag in
+  :[FHLC]) ac_mode=$ac_tag; continue;;
+  esac
+  case $ac_mode$ac_tag in
+  :[FHL]*:*);;
+  :L* | :C*:*) as_fn_error $? "invalid tag \`$ac_tag'" "$LINENO" 5;;
+  :[FH]-) ac_tag=-:-;;
+  :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;
+  esac
+  ac_save_IFS=$IFS
+  IFS=:
+  set x $ac_tag
+  IFS=$ac_save_IFS
+  shift
+  ac_file=$1
+  shift
+
+  case $ac_mode in
+  :L) ac_source=$1;;
+  :[FH])
+    ac_file_inputs=
+    for ac_f
+    do
+      case $ac_f in
+      -) ac_f="$ac_tmp/stdin";;
+      *) # Look for the file first in the build tree, then in the source tree
+	 # (if the path is not absolute).  The absolute path cannot be DOS-style,
+	 # because $ac_f cannot contain `:'.
+	 test -f "$ac_f" ||
+	   case $ac_f in
+	   [\\/$]*) false;;
+	   *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
+	   esac ||
+	   as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5;;
+      esac
+      case $ac_f in *\'*) ac_f=`$as_echo "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
+      as_fn_append ac_file_inputs " '$ac_f'"
+    done
+
+    # Let's still pretend it is `configure' which instantiates (i.e., don't
+    # use $as_me), people would be surprised to read:
+    #    /* config.h.  Generated by config.status.  */
+    configure_input='Generated from '`
+	  $as_echo "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'
+	`' by configure.'
+    if test x"$ac_file" != x-; then
+      configure_input="$ac_file.  $configure_input"
+      { $as_echo "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5
+$as_echo "$as_me: creating $ac_file" >&6;}
+    fi
+    # Neutralize special characters interpreted by sed in replacement strings.
+    case $configure_input in #(
+    *\&* | *\|* | *\\* )
+       ac_sed_conf_input=`$as_echo "$configure_input" |
+       sed 's/[\\\\&|]/\\\\&/g'`;; #(
+    *) ac_sed_conf_input=$configure_input;;
+    esac
+
+    case $ac_tag in
+    *:-:* | *:-) cat >"$ac_tmp/stdin" \
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5 ;;
+    esac
+    ;;
+  esac
+
+  ac_dir=`$as_dirname -- "$ac_file" ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_file" : 'X\(//\)[^/]' \| \
+	 X"$ac_file" : 'X\(//\)$' \| \
+	 X"$ac_file" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  as_dir="$ac_dir"; as_fn_mkdir_p
+  ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+
+  case $ac_mode in
+  :F)
+  #
+  # CONFIG_FILE
+  #
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# If the template does not know about datarootdir, expand it.
+# FIXME: This hack should be removed a few years after 2.60.
+ac_datarootdir_hack=; ac_datarootdir_seen=
+ac_sed_dataroot='
+/datarootdir/ {
+  p
+  q
+}
+/@datadir@/p
+/@docdir@/p
+/@infodir@/p
+/@localedir@/p
+/@mandir@/p'
+case `eval "sed -n \"\$ac_sed_dataroot\" $ac_file_inputs"` in
+*datarootdir*) ac_datarootdir_seen=yes;;
+*@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*)
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5
+$as_echo "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;}
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  ac_datarootdir_hack='
+  s&@datadir@&$datadir&g
+  s&@docdir@&$docdir&g
+  s&@infodir@&$infodir&g
+  s&@localedir@&$localedir&g
+  s&@mandir@&$mandir&g
+  s&\\\${datarootdir}&$datarootdir&g' ;;
+esac
+_ACEOF
+
+# Neutralize VPATH when `$srcdir' = `.'.
+# Shell code in configure.ac might set extrasub.
+# FIXME: do we really want to maintain this feature?
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_sed_extra="$ac_vpsub
+$extrasub
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s|@configure_input@|$ac_sed_conf_input|;t t
+s&@top_builddir@&$ac_top_builddir_sub&;t t
+s&@top_build_prefix@&$ac_top_build_prefix&;t t
+s&@srcdir@&$ac_srcdir&;t t
+s&@abs_srcdir@&$ac_abs_srcdir&;t t
+s&@top_srcdir@&$ac_top_srcdir&;t t
+s&@abs_top_srcdir@&$ac_abs_top_srcdir&;t t
+s&@builddir@&$ac_builddir&;t t
+s&@abs_builddir@&$ac_abs_builddir&;t t
+s&@abs_top_builddir@&$ac_abs_top_builddir&;t t
+$ac_datarootdir_hack
+"
+eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$ac_tmp/subs.awk" \
+  >$ac_tmp/out || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+
+test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
+  { ac_out=`sed -n '/\${datarootdir}/p' "$ac_tmp/out"`; test -n "$ac_out"; } &&
+  { ac_out=`sed -n '/^[	 ]*datarootdir[	 ]*:*=/p' \
+      "$ac_tmp/out"`; test -z "$ac_out"; } &&
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined" >&5
+$as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined" >&2;}
+
+  rm -f "$ac_tmp/stdin"
+  case $ac_file in
+  -) cat "$ac_tmp/out" && rm -f "$ac_tmp/out";;
+  *) rm -f "$ac_file" && mv "$ac_tmp/out" "$ac_file";;
+  esac \
+  || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+ ;;
+
+
+
+  esac
+
+done # for ac_tag
+
+
+as_fn_exit 0
+_ACEOF
+ac_clean_files=$ac_clean_files_save
+
+test $ac_write_fail = 0 ||
+  as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5
+
+
+# configure is writing to config.log, and then calls config.status.
+# config.status does its own redirection, appending to config.log.
+# Unfortunately, on DOS this fails, as config.log is still kept open
+# by configure, so config.status won't be able to write to it; its
+# output is simply discarded.  So we exec the FD to /dev/null,
+# effectively closing config.log, so it can be properly (re)opened and
+# appended to by config.status.  When coming back to configure, we
+# need to make the FD available again.
+if test "$no_create" != yes; then
+  ac_cs_success=:
+  ac_config_status_args=
+  test "$silent" = yes &&
+    ac_config_status_args="$ac_config_status_args --quiet"
+  exec 5>/dev/null
+  $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
+  exec 5>>config.log
+  # Use ||, not &&, to avoid exiting from the if with $? = 1, which
+  # would make configure fail if this is the last instruction.
+  $ac_cs_success || as_fn_exit 1
+fi
+if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
+$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
+fi
+
diff --git a/configure.ac b/configure.ac
new file mode 100644
index 0000000..65586be
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,57 @@
+AC_INIT(FlexDLL,0.35,alain@frisch.fr,flexdll,http://alain.frisch.fr/flexdll.html)
+#AC_COPYRIGHT(Copyright 2016 ?)
+
+AC_ARG_VAR([MINGW_PREFIX],[Prefix for the mingw-w64 i686 cross-compiler])
+AC_ARG_VAR([MINGW64_PREFIX],[Prefix for the mingw-w64 x64 cross-compiler])
+AS_IF([test x"${MINGW_PREFIX}" = x""],[MINGW_PREFIX=i686-w64-mingw32])
+AS_IF([test x"${MINGW64_PREFIX}" = x""],[MINGW64_PREFIX=x86_64-w64-mingw32])
+
+AC_SUBST(MINGW_PREFIX)
+AC_SUBST(MINGW64_PREFIX)
+
+# Check for "Cygwin" compilers
+CHAINS=
+AC_CHECK_TOOL([MINCC],${MINGW_PREFIX}-gcc,[no])
+AS_IF([test "${MINCC}" != "no"],[CHAINS=" mingw"])
+AC_CHECK_TOOL([MIN64CC],${MINGW64_PREFIX}-gcc,[no])
+AS_IF([test "${MIN64CC}" != "no"],[CHAINS="${CHAINS} mingw64"])
+AC_CHECK_TOOL([CYGCC],i686-pc-cygwin-gcc,[no])
+AS_IF([test "${CYGCC}" != "no"],[CHAINS="${CHAINS} cygwin"])
+AC_CHECK_TOOL([CYG64CC],x86_64-pc-cygwin-gcc,[no])
+AS_IF([test "${CYG64CC}" != "no"],[CHAINS="${CHAINS} cygwin64"])
+
+# Check for Microsoft compilers
+AC_MSG_CHECKING([for an installed pair of Microsoft C Compilers])
+MSVS_PATH=no
+eval `./msvs-detect --with-assembler --with-mt`
+MS_CHAINS=
+AS_IF([test "${MSVS_PATH}" = "no"],[
+  AC_MSG_RESULT([no])
+  AC_MSG_CHECKING([for an installed x86 Microsoft C Compiler])
+  eval `./msvs-detect --with-assembler --with-mt --arch=x86`
+  AS_IF([test "${MSVS_PATH}" = "no"],[
+    AC_MSG_RESULT([no])
+  ],[
+    AC_MSG_RESULT([${MSVS_NAME}])
+    CHAINS="${CHAINS} msvc"
+    AC_SUBST(MSVS_PATH)
+    AC_SUBST(MSVS_INC)
+    AC_SUBST(MSVS_LIB)
+  ])
+],[
+  AC_MSG_RESULT([${MSVS_NAME}])
+  CHAINS="${CHAINS} msvc msvc64"
+  AC_SUBST(MSVS_PATH)
+  AC_SUBST(MSVS_INC)
+  AC_SUBST(MSVS_LIB)
+  AC_SUBST(MSVS64_PATH)
+  AC_SUBST(MSVS64_INC)
+  AC_SUBST(MSVS64_LIB)
+])
+AC_SUBST(CHAINS)
+
+# Check for OCaml
+AC_CHECK_TOOL([HAVE_OCAMLOPT],ocamlopt,[no])
+
+AC_CONFIG_FILES(Makefile.config version.ml)
+AC_OUTPUT
diff --git a/findwinsdk b/findwinsdk
deleted file mode 100755
index 6fcb6ea..0000000
--- a/findwinsdk
+++ /dev/null
@@ -1,37 +0,0 @@
-#!/bin/bash
-
-SDK=
-SDK_INC=
-SDK_LIB=
-
-SDK_ROOT=$(reg query "HKLM\SOFTWARE\Microsoft\Microsoft SDKs\Windows" /v CurrentInstallFolder 2>/dev/null | fgrep REG_SZ | sed -e "s/.*REG_SZ *//" | cygpath -f - -md)
-
-if [ "$SDK_ROOT" != "" ] ; then
-  SETENV=$(cygpath $SDK_ROOT)/Bin
-  
-  if [ -e "$SETENV" ] ; then
-    num=0
-    while IFS= read -r line; do
-      case $num in
-        0)
-          SDK=${line%% };;
-        1)
-          SDK_LIB=${line%% };;
-        2)
-          SDK_INC=${line%% };;
-      esac
-      ((num++))
-    done < <(PROCESSOR_ARCHITEW6432=$1 PROCESSOR_ARCHITECTURE=$1 INCLUDE= LIB= PATH="$SETENV:$PATH" C:/Windows/system32/cmd.exe /v:on /c 'SetEnv.cmd /release && echo XMARKER && echo !PATH! && echo !LIB! && echo !INCLUDE!' 2>/dev/null | fgrep "XMARKER" -A 3 | tail -3)
-
-    SDK=$(cygpath "$SDK" -p)
-    SDK=${SDK%:$PATH}
-
-    SDK_LIB=${SDK_LIB%%;}
-    SDK_INC=${SDK_INC%%;}
-
-  fi
-fi
-
-echo SDK$2:="$SDK"
-echo SDK$2_INC:="$SDK_INC"
-echo SDK$2_LIB:="$SDK_LIB"
diff --git a/msvs-detect b/msvs-detect
new file mode 100755
index 0000000..566e16f
--- /dev/null
+++ b/msvs-detect
@@ -0,0 +1,1039 @@
+#!/bin/bash
+# ################################################################################################ #
+# MetaStack Solutions Ltd.                                                                         #
+# ################################################################################################ #
+# Microsoft C Compiler Environment Detection Script                                                #
+# ################################################################################################ #
+# Copyright (c) 2016 MetaStack Solutions Ltd.                                                      #
+# ################################################################################################ #
+# Author: David Allsopp                                                                            #
+# 16-Feb-2016                                                                                      #
+# ################################################################################################ #
+# Redistribution and use in source and binary forms, with or without modification, are permitted   #
+# provided that the following two conditions are met:                                              #
+#     1. Redistributions of source code must retain the above copyright notice, this list of       #
+#        conditions and the following disclaimer.                                                  #
+#     2. Neither the name of MetaStack Solutions Ltd. nor the names of its contributors may be     #
+#        used to endorse or promote products derived from this software without specific prior     #
+#        written permission.                                                                       #
+#                                                                                                  #
+# This software is provided by the Copyright Holder 'as is' and any express or implied warranties  #
+# including, but not limited to, the implied warranties of merchantability and fitness for a       #
+# particular purpose are disclaimed. In no event shall the Copyright Holder be liable for any      #
+# direct, indirect, incidental, special, exemplary, or consequential damages (including, but not   #
+# limited to, procurement of substitute goods or services; loss of use, data, or profits; or       #
+# business interruption) however caused and on any theory of liability, whether in contract,       #
+# strict liability, or tort (including negligence or otherwise) arising in any way out of the use  #
+# use of this software, even if advised of the possibility of such damage.                         #
+# ################################################################################################ #
+
+VERSION=0.2.0
+
+# debug [level=2] message
+debug ()
+{
+  if [[ -z ${2+x} ]] ; then
+    DEBUG_LEVEL=2
+  else
+    DEBUG_LEVEL=$1
+    shift
+  fi
+
+  if [[ $DEBUG -ge $DEBUG_LEVEL ]] ; then
+    echo "$1">&2
+  fi
+}
+
+# warning message
+warning ()
+{
+  if [[ $DEBUG -gt 0 ]] ; then
+    echo "Warning: $1">&2
+  fi
+}
+
+# reg_string key value
+# Retrieves a REG_SZ value from the registry (redirected on WOW64)
+reg_string ()
+{
+  reg query "$1" /v "$2" 2>/dev/null | fgrep "$2" | sed -e "s/ *$2 *REG_SZ *//"
+}
+
+# reg64_string key value
+# As reg_string, but without WOW64 redirection (i.e. guaranteed access to 64-bit registry)
+reg64_string ()
+{
+  $REG64 query "$1" /v "$2" 2>/dev/null | fgrep "$2" | sed -e "s/ *$2 *REG_SZ *//"
+}
+
+# find_in list file
+# Increments $RET if file does not exist in any of the directories in the *-separated list
+find_in ()
+{
+  debug 4 "Looking for $2"
+  if [[ -z $1 ]] ; then
+    STATUS=1
+  else
+    IFS=*
+    STATUS=1
+    for f in $1; do 
+      if [[ -e "$f/$2" ]] ; then
+        STATUS=0
+        break
+      fi
+    done
+    unset IFS
+  fi
+  if [[ $STATUS -eq 1 ]] ; then
+    debug 4 "$2 not found"
+  fi
+  ((RET+=$STATUS))
+}
+
+# check_environment PATH INC LIB name arch
+# By checking for the presence of various files, verifies that PATH, INC and LIB provide a complete
+# compiler and indicates this in its return status. RET is assumed to be zero on entry. $ASSEMBLER
+# will contain the name of assembler for this compiler series (ml.exe or ml64.exe).
+# The following files are checked:
+#   cl.exe        PATH  Microsoft C compiler
+#   kernel32.lib  LIB   Implies Windows SDK present
+#   link.exe      PATH  Microsoft Linker
+#   ml[64].exe    PATH  Microsoft Assembler (ml.exe or ml64.exe)
+#   msvcrt.lib    LIB   Implies C Runtime Libraries present
+#   mt.exe        PATH  Microsoft Manifest Tool
+#   oldnames.lib  LIB   Implies C Runtime Libraries present
+#   rc.exe        PATH  Microsoft Resource Compiler (implies tools present)
+#   stdlib.h      INC   Implies Microsoft C Runtime Libraries present
+#   windows.h     INC   Implies Windows SDK present
+# oldnames.lib is included, because certain SDKs and older versions don't correctly install the
+# entire runtime if only some options (e.g. Dynamic Runtime and not Static) are selected.
+check_environment ()
+{
+  for tool in cl rc link ; do
+    find_in "$1" $tool.exe
+  done
+
+  if [[ $RET -gt 0 ]] ; then
+    warning "Microsoft C Compiler tools not all found - $4 ($5) excluded"
+    return 1
+  fi
+
+  RET=0
+  find_in "$2" windows.h
+  find_in "$3" kernel32.lib
+  if [[ $RET -gt 0 ]] ; then
+    warning "Windows SDK not all found - $4 ($5) excluded"
+    return 1
+  fi
+
+  RET=0
+  find_in "$2" stdlib.h
+  find_in "$3" msvcrt.lib
+  find_in "$3" oldnames.lib
+  if [[ $RET -gt 0 ]] ; then
+    warning "Microsoft C runtime library not all found - $4 ($5) excluded"
+    return 1
+  fi
+
+  ASSEMBLER=ml${5#x}
+  ASSEMBLER=${ASSEMBLER%86}.exe
+  if [[ $ML_REQUIRED -eq 1 ]] ; then
+    RET=0
+    find_in "$1" $ASSEMBLER
+    if [[ $RET -gt 0 ]] ; then
+      warning "Microsoft Assembler ($ASSEMBLER) not found - $4 ($5)"
+      return 1
+    fi
+  fi
+
+  if [[ $MT_REQUIRED -eq 1 ]] ; then
+    RET=0
+    find_in "$1" mt.exe
+    if [[ $RET -gt 0 ]] ; then
+      warning "Microsoft Manifest Tool not found - $4 ($5)"
+      return 1
+    fi
+  fi
+
+  return 0
+}
+
+# output VAR value arch
+# Outputs a command for setting VAR to value based on $OUTPUT. If $ENV_ARCH is arch, then an empty
+# value (i.e. no change) is output.
+output ()
+{
+  if [[ $3 = $ENV_ARCH ]] ; then
+    VALUE=
+  else
+    VALUE=$2
+  fi
+  case "$OUTPUT" in
+    0)
+      echo "$1='$VALUE'";;
+    1)
+      echo "$1:=\"$VALUE\"";;
+  esac
+}
+
+# DEBUG       Debugging level
+# MODE        Operation mode
+#               0 - Normal
+#               1 - --all
+#               2 - --help
+#               3 - --version
+# OUTPUT      --output option
+#               0 - =shell
+#               1 - =make
+# MT_REQUIRED --with-mt
+# ML_REQUIRED --with-assembler
+# TARGET_ARCH Normalised --arch (x86, x64 or blank for both)
+# LEFT_ARCH   \ If $TARGET_ARCH is blank, these will be x86 and x64 respectively, otherwise they
+# RIGHT_ARCH  / equal $TARGET_ARCH
+# SCAN_ENV    Controls from parsing whether the environment should be queried for a compiler
+DEBUG=0
+MODE=0
+OUTPUT=0
+MT_REQUIRED=0
+ML_REQUIRED=0
+TARGET_ARCH=
+SCAN_ENV=0
+
+# Parse command-line. At the moment, the short option which usefully combines with anything is -d,
+# so for the time being, combining short options is not permitted, as the loop becomes even less
+# clear with getopts. GNU getopt isn't installed by default on Cygwin...
+if [[ $@ != "" ]] ; then
+  while true ; do
+    case "$1" in
+      # Mode settings ($MODE)
+      -a|--all)
+        MODE=1
+        shift 1;;
+      -h|--help)
+        MODE=2
+        shift;;
+      -v|--version)
+        MODE=3
+        shift;;
+
+      # Simple flags ($MT_REQUIRED and $ML_REQUIRED)
+      --with-mt)
+        MT_REQUIRED=1
+        shift;;
+      --with-assembler)
+        ML_REQUIRED=1
+        shift;;
+
+      # -o, --output ($OUTPUT)
+      -o|--output)
+        case "$2" in
+          shell)
+            ;;
+          make)
+            OUTPUT=1;;
+          *)
+            echo "$0: unrecognised option for $1: '$2'">&2
+            exit 2;;
+        esac
+        shift 2;;
+      -oshell|--output=shell)
+        shift;;
+      -omake|--output=make)
+        OUTPUT=1
+        shift;;
+      -o*)
+        echo "$0: unrecognised option for -o: '${1#-o}'">&2
+        exit 2;;
+      --output=*)
+        echo "$0: unrecognised option for --output: '${1#--output=}'">&2
+        exit 2;;
+
+      # -x, --arch ($TARGET_ARCH)
+      -x|--arch)
+        case "$2" in
+          86|x86)
+            TARGET_ARCH=x86;;
+          64|x64)
+            TARGET_ARCH=x64;;
+          *)
+            echo "$0: unrecognised option for $1: '$2'">&2
+            exit 2
+        esac
+        shift 2;;
+      -x86|-xx86|--arch=x86|--arch=86)
+        TARGET_ARCH=x86
+        shift;;
+      -x64|-xx64|--arch=x64|--arch=64)
+        TARGET_ARCH=x64
+        shift;;
+      -x*)
+        echo "$0: unrecognised option for -x: '${1#-x}'">&2
+        exit 2;;
+      --arch=*)
+        echo "$0: unrecognised option for --arch: '${1#--arch}'">&2
+        exit 2;;
+
+      # -d, --debug ($DEBUG)
+      -d*)
+        DEBUG=${1#-d}
+        if [[ -z $DEBUG ]] ; then
+          DEBUG=1
+        fi
+        shift;;
+      --debug=*)
+        DEBUG=${1#*=}
+        shift;;
+      --debug)
+        DEBUG=1
+        shift;;
+
+      # End of option marker
+      --)
+        shift
+        break;;
+
+      # Invalid options
+      --*)
+        echo "$0: unrecognised option: '${1%%=*}'">&2
+        exit 2;;
+      -*)
+        echo "$0: unrecognised option: '${1:1:1}'">&2
+        exit 2;;
+
+      # MSVS_PREFERENCE (without end-of-option marker)
+      *)
+        break;;
+    esac
+  done
+
+  if [[ -n ${1+x} ]] ; then
+    if [[ $MODE -eq 1 ]] ; then
+      echo "$0: cannot specify MSVS_PREFERENCE and --all">&2
+      exit 2
+    else
+      MSVS_PREFERENCE="$@"
+    fi
+  fi
+fi
+
+# Options sanitising
+if [[ $MODE -eq 1 ]] ; then
+  if [[ -n $TARGET_ARCH ]] ; then
+    echo "$0: --all and --arch are mutually exclusive">&2
+    exit 2
+  fi
+  MSVS_PREFERENCE=
+  SCAN_ENV=1
+elif [[ -z ${MSVS_PREFERENCE+x} ]] ; then
+  MSVS_PREFERENCE='@;14.0;12.0;11.0;10.0;9.0;8.0;7.1;7.0'
+fi
+
+MSVS_PREFERENCE=${MSVS_PREFERENCE//;/ }
+
+if [[ -z $TARGET_ARCH ]] ; then
+  LEFT_ARCH=x86
+  RIGHT_ARCH=x64
+else
+  LEFT_ARCH=$TARGET_ARCH
+  RIGHT_ARCH=$TARGET_ARCH
+fi
+
+# Command line parsing complete (MSVS_PREFERENCE pending)
+
+NAME="Microsoft C Compiler Environment Detection Script"
+case $MODE in
+  2)
+    echo "$NAME"
+    echo "Queries the environment and registry to locate Visual Studio / Windows SDK"
+    echo "installations and uses their initialisation scripts (SetEnv.cmd, vcvarsall.bat,"
+    echo "etc.) to determine INCLUDE, LIB and PATH alterations."
+    echo
+    echo "Usage:"
+    echo "  $0 [OPTIONS] [--] [MSVS_PREFERENCE]"
+    echo
+    echo "Options:"
+    echo "  -a, --all            Display all available compiler packages"
+    echo "  -x, --arch=ARCH      Only consider packages for ARCH (x86 or x64). Default is"
+    echo "                       to return packages containing both architectures"
+    echo "  -d, --debug[=LEVEL]  Set debug messages level"
+    echo "  -h, --help           Display this help screen"
+    echo "  -o, --output=OUTPUT  Set final output. Default is shell. Valid values:"
+    echo "                         shell - shell assignments, for use with eval"
+    echo "                         make  - make assignments, for inclusion in a Makefile"
+    echo "  -v, --version        Display the version"
+    echo "      --with-mt        Only consider packages including the Manifest Tool"
+    echo "      --with-assembler Only consider packages including an assembler"
+    echo
+    echo "If MSVS_PREFERENCE is not given, then the environment variable MSVS_PREFERENCE"
+    echo "is read. MSVS_PREFERENCE is a semicolon separated list of preferred versions."
+    echo "Three kinds of version notation are supported:"
+    echo "  1. @ - which refers to the C compiler found in PATH (if it can be identified)"
+    echo "     (this allows the C compiler corresponding to the opposite architecture to"
+    echo "     be selected, if possible)."
+    echo "  2. mm.n - which refers to a Visual Studio version (e.g. 14.0, 7.1) but which"
+    echo "     also allows an SDK to provide the compiler (e.g. Windows SDK 7.1 provides"
+    echo "     10.0). Visual Studio packages are always preferred ahead of SDKs."
+    echo "  3. SPEC - an actual package specification. Visual Studio packages are VSmm.n"
+    echo "     (e.g. VS14.0, VS7.1) and SDK packages are SDKm.n (e.g. SDK7.1)."
+    echo "The default behaviour is to match the environment compiler followed by the most"
+    echo "recent version of the compiler."
+    exit 0;;
+  3)
+    echo "$NAME"
+    echo "Version $VERSION"
+    exit 0;;
+esac
+
+# Known compiler packages. Visual Studio .NET 2002 onwards. Detection is in place for Visual Studio
+# 2005 Express, but because it doesn't include a Windows SDK, it can only ever be detected if the
+# script has been launched from within a Platform SDK command prompt (this provides the Windows
+# Headers and Libraries which allows this script to detect the rest).
+# Each element is either a Visual Studio or SDK package and the value is the syntax for a bash
+# associative array to be eval'd. Each of these contains the following properties:
+#   NAME           - the friendly name of the package
+#   ENV            - (VS only) the version-specific portion of the VSCOMNTOOLS environment variable
+#   VERSION        - (VS only) version number of the package
+#   ARCH           - Lists the architectures available in this version
+#   ARCH_SWITCHES  - The script is assumed to accept x86 and x64 to indicate architecture. This key
+#                    contains another eval'd associative array allowing alternate values to be given
+#   SETENV_RELEASE - (SDK only) script switch necessary to select release than debugging versions
+#   EXPRESS        - (VS only) the prefix to the registry key to detect the Express edition
+#   EXPRESS_ARCH   - (VS only) overrides ARCH if Express edition is detected
+#   EXPRESS_ARCH_SWITCHES - (VS only) overrides ARCH_SWITCHES if Express edition is detected
+#   VC_VER         - (SDK only) specifies the version of the C Compilers included in the SDK (SDK
+#                    equivalent of the VERSION key)
+#   REG_KEY        - (SDK only) registry key to open to identify this package installation
+#   REG_VALUE      - (SDK only) registry value to query to identify this package installation
+# For a while, Windows SDKs followed a standard pattern which is stored in the SDK element and
+# copied to the appropriate version. SDKs after 7.1 do not include compilers, and so are not
+# captured (as of Visual Studio 2015, the Windows SDK is official part of Visual Studio).
+declare -A COMPILERS
+SDK52_KEY='HKLM\SOFTWARE\Microsoft\MicrosoftSDK\InstalledSDKs\8F9E5EF3-A9A5-491B-A889-C58EFFECE8B3'
+COMPILERS=(
+  ["VS7.0"]='(
+    ["NAME"]="Visual Studio .NET 2002"
+    ["ENV"]=""
+    ["VERSION"]="7.0"
+    ["ARCH"]="x86")'
+  ["VS7.1"]='(
+    ["NAME"]="Visual Studio .NET 2003"
+    ["ENV"]="71"
+    ["VERSION"]="7.1"
+    ["ARCH"]="x86")'
+  ["VS8.0"]='(
+    ["NAME"]="Visual Studio 2005"
+    ["ENV"]="80"
+    ["VERSION"]="8.0"
+    ["EXPRESS"]="VC"
+    ["ARCH"]="x86 x64"
+    ["EXPRESS_ARCH"]="x86")'
+  ["VS9.0"]='(
+    ["NAME"]="Visual Studio 2008"
+    ["ENV"]="90"
+    ["VERSION"]="9.0"
+    ["EXPRESS"]="VC"
+    ["ARCH"]="x86 x64"
+    ["EXPRESS_ARCH"]="x86")'
+  ["VS10.0"]='(
+    ["NAME"]="Visual Studio 2010"
+    ["ENV"]="100"
+    ["VERSION"]="10.0"
+    ["EXPRESS"]="VC"
+    ["ARCH"]="x86 x64"
+    ["EXPRESS_ARCH"]="x86")'
+  ["VS11.0"]='(
+    ["NAME"]="Visual Studio 2012"
+    ["ENV"]="110"
+    ["VERSION"]="11.0"
+    ["EXPRESS"]="WD"
+    ["ARCH"]="x86 x64"
+    ["EXPRESS_ARCH_SWITCHES"]="([\"x64\"]=\"x86_amd64\")")'
+  ["VS12.0"]='(
+    ["NAME"]="Visual Studio 2013"
+    ["ENV"]="120"
+    ["VERSION"]="12.0"
+    ["EXPRESS"]="WD"
+    ["ARCH"]="x86 x64"
+    ["EXPRESS_ARCH_SWITCHES"]="([\"x64\"]=\"x86_amd64\")")'
+  ["VS14.0"]='(
+    ["NAME"]="Visual Studio 2015"
+    ["ENV"]="140"
+    ["VERSION"]="14.0"
+    ["ARCH"]="x86 x64")'
+  ["SDK5.2"]='(
+    ["NAME"]="Windows Server 2003 SP1 SDK"
+    ["VC_VER"]="8.0"
+    ["REG_KEY"]="$SDK52_KEY"
+    ["REG_VALUE"]="Install Dir"
+    ["SETENV_RELEASE"]="/RETAIL"
+    ["ARCH"]="x64"
+    ["ARCH_SWITCHES"]="([\"x64\"]=\"/X64\")")'
+  ["SDK"]='(
+    ["NAME"]="Generalised Windows SDK"
+    ["SETENV_RELEASE"]="/Release"
+    ["ARCH"]="x86 x64"
+    ["ARCH_SWITCHES"]="([\"x86\"]=\"/x86\" [\"x64\"]=\"/x64\")")'
+  ["SDK6.1"]='(
+    ["NAME"]="Windows Server 2008 with .NET 3.5 SDK"
+    ["VC_VER"]="9.0")'
+  ["SDK7.0"]='(
+    ["NAME"]="Windows 7 with .NET 3.5 SP1 SDK"
+    ["VC_VER"]="9.0")'
+  ["SDK7.1"]='(
+    ["NAME"]="Windows 7 with .NET 4 SDK"
+    ["VC_VER"]="10.0")'
+)
+
+# FOUND is ultimately an associative array containing installed compiler packages. It's
+# hijacked here as part of MSVS_PREFERENCE validation.
+# Ultimately, it contains a copy of the value from COMPILERS with the following extra keys:
+#   IS_EXPRESS - (VS only) indicates whether the Express edition was located
+#   SETENV     - (SDK only) the full location of the SetEnv.cmd script
+#   ASSEMBLER  - the name of the assembler (ml or ml64)
+#   MSVS_PATH \
+#   MSVS_INC   > prefix values for PATH, INCLUDE and LIB determined by running the scripts.
+#   MSVS_LIB  /
+declare -A FOUND
+
+# Check that MSVS_PREFERENCE is valid and contains no repetitions.
+for v in $MSVS_PREFERENCE ; do
+  if [[ -n ${FOUND[$v]+x} ]] ; then
+    echo "$0: corrupt MSVS_PREFERENCE: repeated '$v'">&2
+    exit 2
+  fi
+  if [[ $v != "@" ]] ; then
+    if [[ -z ${COMPILERS[$v]+x} && -z ${COMPILERS["VS$v"]+x} ]] ; then
+      echo "$0: corrupt MSVS_PREFERENCE: unknown compiler '$v'">&2
+      exit 2
+    fi
+  else
+    SCAN_ENV=1
+  fi
+  FOUND["$v"]=""
+done
+
+# Reset FOUND for later use.
+FOUND=()
+
+# Scan the environment for a C compiler, and check that it's valid. Throughout the rest of the
+# script, it is assumed that if ENV_ARCH is set then there is a valid environment compiler.
+if [[ $SCAN_ENV -eq 1 ]] ; then
+  if which cl >/dev/null 2>&1 ; then
+    # Determine its architecture from the Microsoft Logo line.
+    ENV_ARCH=$(cl 2>&1 | head -1 | tr -d '\r')
+    case "${ENV_ARCH#* for }" in
+      x64|AMD64)
+        ENV_ARCH=x64;;
+      80x86|x86)
+        ENV_ARCH=x86;;
+      *)
+        echo "Unable to identify C compiler architecture from '${ENV_ARCH#* for }'">&2
+        echo "Environment C compiler discarded">&2
+        unset ENV_ARCH;;
+    esac
+
+    # Environment variable names are a bit of a nightmare on Windows - they are actually case
+    # sensitive (at the kernel level) but not at the user level! To compound the misery is that SDKs
+    # use Include and Lib where vcvars32 tends to use INCLUDE and LIB. Windows versions also contain
+    # a mix of Path and PATH, but fortunately Cygwin normalises that to PATH for us! For this
+    # reason, use env to determine the actual case of the LIB and INCLUDE variables.
+    if [[ -n ${ENV_ARCH+x} ]] ; then
+      RET=0
+      ENV_INC=$(env | grep -i "^INCLUDE=")
+      ENV_INC=${ENV_INC%%=*}
+      ENV_LIB=$(env | grep -i "^LIB=")
+      ENV_LIB=${ENV_LIB%%=*}
+      if check_environment "${PATH//:/*}" \
+                           "${!ENV_INC//;/*}" \
+                           "${!ENV_LIB//;/*}" \
+                           "Environment C compiler" \
+                           "$ENV_ARCH" ; then
+        ENV_CL=$(which cl)
+        ENV_cl=${ENV_CL,,}
+        ENV_cl=${ENV_cl/bin\/*_/bin\/}
+        debug "Environment appears to include a compiler at $ENV_CL"
+        if [[ -n $TARGET_ARCH && $TARGET_ARCH != $ENV_ARCH ]] ; then
+          debug "But architecture doesn't match required value"
+          unset ENV_ARCH
+        fi
+      else
+        unset ENV_ARCH
+      fi
+    fi
+  fi
+fi
+
+# Even if launched from a 64-bit Command Prompt, Cygwin is usually 32-bit and so the scripts
+# executed will inherit that fact. This is a problem when querying the registry, but fortunately
+# WOW64 provides a mechanism to break out of the 32-bit environment by mapping $WINDIR/sysnative to
+# the real 64-bit programs.
+# Thus:
+#   MS_ROOT is the 32-bit Microsoft Registry key (all Visual Studio keys are located there)
+#   REG64 is the processor native version of the reg utility (allowing 64-bit keys to be read for
+#         the SDKs)
+if [[ -n ${PROCESSOR_ARCHITEW6432+x} ]] ; then
+  debug "WOW64 detected"
+  MS_ROOT='HKLM\SOFTWARE\Microsoft'
+  REG64=$WINDIR/sysnative/reg
+else
+  MS_ROOT='HKLM\SOFTWARE\Wow6432Node\Microsoft'
+  REG64=reg
+fi
+
+# COMPILER contains each eval'd element from COMPILERS
+declare -A COMPILER
+
+# Scan for each compiler package
+for i in "${!COMPILERS[@]}" ; do
+  eval COMPILER=${COMPILERS[$i]}
+
+  if [[ -n ${COMPILER["ENV"]+x} ]] ; then
+    # Visual Studio package - test for its environment variable
+    ENV=VS${COMPILER["ENV"]}COMNTOOLS
+    if [[ -n ${!ENV+x} ]] ; then
+      debug "$ENV is a candidate"
+      TEST_PATH=${!ENV%\"}
+      TEST_PATH=$(cygpath -u -f - <<< ${TEST_PATH#\"})
+      if [[ -e $TEST_PATH/vsvars32.bat ]] ; then
+        debug "Directory pointed to by $ENV contains vsvars32.bat"
+        EXPRESS=0
+        # Check for the primary Visual Studio registry value indicating installation
+        INSTALL_DIR=$(reg_string "$MS_ROOT\\VisualStudio\\${COMPILER["VERSION"]}" InstallDir)
+        if [[ -z $INSTALL_DIR ]] ; then
+          if [[ -n ${COMPILER["EXPRESS"]+x} ]] ; then
+            TEST_KEY="$MS_ROOT\\${COMPILER["EXPRESS"]}Express\\${COMPILER["VERSION"]}"
+            INSTALL_DIR=$(reg_string "$TEST_KEY" InstallDir)
+            # Exception for Visual Studio 2005 Express, which doesn't set the registry correctly, so
+            # set INSTALL_DIR to a fake value to pass the next test.
+            if [[ ${COMPILER["VERSION"]} = "8.0" ]] ; then
+              INSTALL_DIR=$(cygpath -w "$TEST_PATH")
+              EXPRESS=1
+            else
+              if [[ -z $INSTALL_DIR ]] ; then
+                warning "vsvars32.bat found, but registry value not located (Exp or Pro)"
+              else
+                EXPRESS=1
+              fi
+            fi
+          else
+            warning "vsvars32.bat found, but registry value not located"
+          fi
+        fi
+
+        if [[ -n $INSTALL_DIR ]] ; then
+          if [[ ${TEST_PATH%/} = $(cygpath -u "$INSTALL_DIR\\..\\Tools") ]] ; then
+            RESULT=${COMPILERS[$i]%)}
+            DISPLAY=${COMPILER["NAME"]}
+            if [[ $EXPRESS -eq 1 ]] ; then
+              DISPLAY="$DISPLAY Express"
+            fi
+            FOUND+=(["$i"]="$RESULT [\"DISPLAY\"]=\"$DISPLAY\" [\"IS_EXPRESS\"]=\"$EXPRESS\")")
+            debug "${COMPILER["NAME"]} accepted for further detection"
+          else
+            warning "$ENV doesn't agree with registry"
+          fi
+        else
+          warning "vsvars32.bat found, but registry settings not found"
+        fi
+      else
+        warning "$ENV set, but vsvars32.bat not found"
+      fi
+    fi
+  elif [[ -n ${COMPILER["REG_KEY"]+x} ]] ; then
+    # SDK with explicit registry detection value
+    INSTALL_DIR=$(reg64_string "${COMPILER["REG_KEY"]}" "${COMPILER["REG_VALUE"]}")
+    if [[ -n $INSTALL_DIR ]] ; then
+      TEST_PATH=$(cygpath -u "$INSTALL_DIR")
+      if [[ -e $TEST_PATH/SetEnv.cmd ]] ; then
+        RESULT=${COMPILERS[$i]%)}
+        FOUND+=(["$i"]="$RESULT [\"DISPLAY\"]=\"${COMPILER["NAME"]}\" [\"SETENV\"]=\"$INSTALL_DIR\\SetEnv.cmd\")")
+        debug "${COMPILER["NAME"]} accepted for further detection"
+      else
+        warning "Registry set for Windows Server 2003 SDK, but SetEnv.cmd not found"
+      fi
+    fi
+  fi
+done
+
+# Now enumerate installed SDKs for v6.0+
+SDK_ROOT='HKLM\SOFTWARE\Microsoft\Microsoft SDKs\Windows'
+for i in $(reg query "$SDK_ROOT" 2>/dev/null | fgrep "Windows\v" | sed -e 's/.*\\//') ; do
+  debug "Analysing SDK key $SDK_ROOT\\$i"
+  INSTALL_DIR=$(reg_string "$SDK_ROOT\\$i" InstallationFolder)
+  if [[ -n $INSTALL_DIR ]] ; then
+    TEST_PATH=$(cygpath -u "$INSTALL_DIR")
+    if [[ -e $TEST_PATH/Bin/SetEnv.cmd ]] ; then
+      if [[ -z ${COMPILERS["SDK${i#v}"]+x} ]] ; then
+        warning "SDK $i is not known to this script - assuming compatibility"
+        DISPLAY="Windows SDK $i"
+      else
+        eval COMPILER=${COMPILERS["SDK${i#v}"]}
+        DISPLAY=${COMPILER['NAME']}
+      fi
+      RESULT=${COMPILERS['SDK']%)}
+      FOUND+=(["SDK${i/v/}"]="$RESULT [\"DISPLAY\"]=\"$DISPLAY\" [\"SETENV\"]=\"$INSTALL_DIR\\Bin\\SetEnv.cmd\")")
+    else
+      if [[ -n ${COMPILERS["SDK${i#v}"]+x} ]] ; then
+        warning "Registry set for Windows SDK $i, but SetEnv.cmd not found"
+      fi
+    fi
+  else
+    warning "Registry key for Windows SDK $i doesn't contain expected InstallationFolder value"
+  fi
+done
+
+if [[ $DEBUG -gt 1 ]] ; then
+  for i in "${!FOUND[@]}" ; do
+    echo "Inspect $i">&2
+  done
+fi
+
+# Basic scanning is complete, now interrogate the packages which seem to be installed and ensure
+# that they pass the check_environment tests.
+
+# CANDIDATES is a hash table of the keys of FOUND. The result of the next piece of processing is to
+# derive two arrays PREFERENCE and TEST. TEST will contain a list of the keys of FOUND in the order
+# in which they should be evaluated. PREFERENCE contains a parsed version of MSVS_PREFERENCE but
+# filtered on the basis of the compiler packages already identified. The current "hoped for"
+# preference is stored in $pref (the index into PREFERENCE) and $PREF (which is
+# ${PREFERENCE[$pref]}). These two arrays together allow testing to complete quickly if the desired
+# version is found (note that often this won't be possible as the @ environment option requires all
+# packages to be tested in order to be sure that the environment compiler is not ambiguous).
+declare -A CANDIDATES
+for i in "${!FOUND[@]}" ; do
+  CANDIDATES[$i]="";
+done
+
+# For --all, act as though MSVS_PREFERENCE was "@" because this causes all packages to be tested.
+if [[ $MODE -eq 1 ]] ; then
+  PREFER_ENV=1
+  PREFERENCE=("@")
+else
+  PREFER_ENV=0
+  PREFERENCE=()
+fi
+
+TEST=()
+for i in $MSVS_PREFERENCE ; do
+  if [[ $i = "@" ]] ; then
+    if [[ -n ${ENV_ARCH+x} ]] ; then
+      PREFERENCE+=("@")
+      PREFER_ENV=1
+    else
+      debug "Preference @ ignored since no environment compiler selected"
+    fi
+  else
+    if [[ -n ${COMPILERS[$i]+x} ]] ; then
+      if [[ -n ${CANDIDATES[$i]+x} ]] ; then
+        unset CANDIDATES[$i]
+        TEST+=($i)
+        PREFERENCE+=($i)
+      fi
+    else
+      if [[ -n ${CANDIDATES["VS$i"]+x} ]] ; then
+        unset CANDIDATES["VS$i"]
+        TEST+=("VS$i")
+        PREFERENCE+=("VS$i")
+      fi
+      SDKS=
+      for j in "${!COMPILERS[@]}" ; do
+        eval COMPILER=${COMPILERS[$j]}
+        if [[ -n ${COMPILER["VC_VER"]}+x ]] ; then
+          if [[ $i = ${COMPILER["VC_VER"]} && -n ${CANDIDATES[$j]+x} ]] ; then
+            unset CANDIDATES[$j]
+            SDKS="$j $SDKS"
+          fi
+        fi
+      done
+      SDKS=${SDKS% }
+      SDKS="$(sort -r <<< "${SDKS// /$'\n'}")"
+      SDKS=${SDKS//$'\n'/ }
+      eval TEST+=($SDKS)
+      eval PREFERENCE+=($SDKS)
+    fi
+  fi
+done
+
+# If MSVS_PREFERENCE includes @, add any remaining items from CANDIDATES to TEST, otherwise remove
+# them from FOUND so that they don't accidentally get reported on later.
+for i in "${!CANDIDATES[@]}" ; do
+  if [[ $PREFER_ENV -eq 1 ]] ; then
+    TEST+=($i)
+  else
+    unset FOUND[$i]
+  fi
+done
+
+# Initialise pref and PREF to ${PREFERENCE[0]}
+pref=0
+PREF=${PREFERENCE[0]}
+
+if [[ $DEBUG -gt 1 ]] ; then
+  for i in "${!TEST[@]}" ; do
+    echo "Test ${TEST[$i]}">&2
+  done
+fi
+
+
+# Now run each compiler's environment script and then test whether it is suitable. During this loop,
+# attempt to identify the environment C compiler (if one was found). The environment C compiler is
+# strongly identified if the full location of cl matches the one in PATH and both LIB and INCLUDE
+# contain the strings returned by the script in an otherwise empty environment (if one or both of
+# the LIB and INCLUDE variables do not contain the string returned, then the compiler is weakly
+# identified). If the environment compiler is strongly identified by more than one package, then it
+# is not identified at all; if it is strongly identified by no packages but weakly identified by
+# exactly 1, then we grudgingly accept that that's probably the one.
+ENV_COMPILER=
+WEAK_ENV=
+
+# ARCHINFO contains the appropriate ARCH_SWITCHES associative array for each compiler.
+declare -A ARCHINFO
+
+for i in "${TEST[@]}" ; do
+  CURRENT=${FOUND[$i]}
+  eval COMPILER=$CURRENT
+  # At the end of this process, the keys of FOUND will be augmented with the architecture found in
+  # each case (so if "VS14.0" was in FOUND from the scan and both the x86 and x64 compilers are
+  # valid, then at the end of this loop FOUND will contain "VS14.0-x86" and "VS14.0-x64").
+  unset FOUND[$i]
+
+  if [[ ${COMPILER["IS_EXPRESS"]}0 -gt 0 && -n ${COMPILER["EXPRESS_ARCH_SWITCHES"]+x} ]] ; then
+    eval ARCHINFO=${COMPILER["EXPRESS_ARCH_SWITCHES"]}
+  elif [[ -n ${COMPILER["ARCH_SWITCHES"]+x} ]] ; then
+    eval ARCHINFO=${COMPILER["ARCH_SWITCHES"]}
+  else
+    ARCHINFO=()
+  fi
+
+  # Determine the script to be executed and any non-architecture specific switches needed.
+  # $ENV is will contain the value of the environment variable for the compiler (empty for an SDK)
+  # which is required for Visual Studio 7.x shim later.
+  if [[ -n ${COMPILER["ENV"]+x} ]] ; then
+    ENV=VS${COMPILER["ENV"]}COMNTOOLS
+    ENV=${!ENV%\"}
+    ENV=${ENV#\"}
+    if [[ ${COMPILER["ENV"]}0 -ge 800 ]] ; then
+      SCRIPT="$(cygpath -d -f - <<< $ENV)\\..\\..\\VC\\vcvarsall.bat"
+      SCRIPT_SWITCHES=
+    else
+      SCRIPT="$(cygpath -d -f - <<< $ENV)\\vsvars32.bat"
+      SCRIPT_SWITCHES=
+    fi
+  else
+    ENV=
+    SCRIPT=${COMPILER["SETENV"]}
+    SCRIPT_SWITCHES=${COMPILER["SETENV_RELEASE"]}
+  fi
+  # For reasons of escaping, the script is executed using its basename so the directory needs
+  # prepending to PATH.
+  DIR=$(dirname "$SCRIPT" | cygpath -u -f -)
+
+  if [[ ${COMPILER["IS_EXPRESS"]} -gt 0 && -n ${COMPILER["EXPRESS_ARCH"]+x} ]] ; then
+    ARCHS=${COMPILER["EXPRESS_ARCH"]}
+  else
+    ARCHS=${COMPILER["ARCH"]}
+  fi
+
+  for arch in $ARCHS ; do
+    # Determine the command line switch for this architecture
+    if [[ -n ${ARCHINFO[$arch]+x} ]] ; then
+      ARCH_SWITCHES=${ARCHINFO[$arch]}
+    else
+      ARCH_SWITCHES=$arch
+    fi
+
+    # Run the script in order to determine changes made to PATH, INCLUDE and LIB. These scripts
+    # always prepend changes to the environment variables.
+    MSVS_PATH=
+    MSVS_LIB=
+    MSVS_INC=
+
+    COMMAND='%EXEC_SCRIPT% && echo XMARKER && echo !PATH! && echo !LIB! && echo !INCLUDE!'
+
+    # Note that EXEC_SCRIPT must have ARCH_SWITCHES first for older Platform SDKs (newer ones parse
+    # arguments properly)
+    if [[ $DEBUG -gt 3 ]] ; then
+      printf "Scanning %s... " "$(basename "$SCRIPT") $ARCH_SWITCHES $SCRIPT_SWITCHES">&2
+    fi
+    num=0
+    while IFS= read -r line; do
+      case $num in
+        0)
+          MSVS_PATH=${line%% };;
+        1)
+          MSVS_LIB=${line%% };;
+        2)
+          MSVS_INC=${line%% };;
+      esac
+      ((num++))
+    done < <(INCLUDE= LIB= PATH="$DIR:$PATH" \
+             EXEC_SCRIPT="$(basename "$SCRIPT") $ARCH_SWITCHES $SCRIPT_SWITCHES" \
+             cmd /v:on /c $COMMAND 2>/dev/null | fgrep XMARKER -A 3 | tail -3)
+    if [[ $DEBUG -gt 3 ]] ; then
+      echo done>&2
+    fi
+
+    if [[ -n $MSVS_PATH ]] ; then
+      # Translate MSVS_PATH back to Cygwin notation (/cygdrive, etc. and colon-separated)
+      MSVS_PATH=$(cygpath "$MSVS_PATH" -p)
+      # Remove the actual PATH (and the extra $DIR added to run the script)
+      MSVS_PATH=${MSVS_PATH%:$DIR:$PATH}
+      # Guarantee that MSVS_PATH ends with a single :
+      MSVS_PATH="${MSVS_PATH%%:}:"
+    fi
+    # Ensure that both variables end with a semi-colon (it doesn't matter if for some erroneous
+    # reason they have come back blank, because check_environment will shortly fail)
+    MSVS_LIB="${MSVS_LIB%%;};"
+    MSVS_INC="${MSVS_INC%%;};"
+
+    # Visual Studio .NET 2002 and 2003 do not include mt in PATH, for not entirely clear reasons.
+    # This shim detects that scenario and adds the winnt folder to MSVS_PATH.
+    RET=0
+    if [[ ${i/.*/} = "VS7" ]] ; then
+      find_in "${MSVS_PATH//:/*}" mt.exe
+      if [[ $RET -eq 1 ]] ; then
+        MSVS_PATH="$MSVS_PATH$(cygpath -u -f - <<< $ENV\\Bin\\winnt):"
+        RET=0
+      fi
+    fi
+
+    # Ensure that these derived values give a valid compiler.
+    if check_environment "${MSVS_PATH//:/*}" "${MSVS_INC//;/*}" "${MSVS_LIB//;/*}" "$i" $arch ; then
+      # Put the package back into FOUND, but augmented with the architecture name and with the
+      # derived values.
+      FOUND["$i-$arch"]="${CURRENT%)} [\"MSVS_PATH\"]=\"$MSVS_PATH\" \
+                                      [\"MSVS_INC\"]=\"$MSVS_INC\" \
+                                      [\"MSVS_LIB\"]=\"$MSVS_LIB\" \
+                                      [\"ASSEMBLER\"]=\"$ASSEMBLER\")" #"# fixes vim syn match error
+
+      # Check to see if this is a match for the environment C compiler.
+      if [[ -n ${ENV_ARCH+x} ]] ; then
+        TEST_cl=$(PATH="$MSVS_PATH:$PATH" which cl)
+        TEST_cl=${TEST_cl,,}
+        TEST_cl=${TEST_cl/bin\/*_/bin\/}
+        if [[ $TEST_cl = $ENV_cl ]] ; then
+          if [[ ${!ENV_INC/"$MSVS_INC"/} != "${!ENV_INC}" && \
+                ${!ENV_LIB/"$MSVS_LIB"/} != "${!ENV_LIB}" ]] ; then
+            debug "$i-$arch is a strong candidate for the Environment C compiler"
+            if [[ -n ${ENV_COMPILER+x} ]] ; then
+              if [[ -z ${ENV_COMPILER} ]] ; then
+                ENV_COMPILER=$i-$arch
+                unset WEAK_ENV
+              else
+                # More than one strong candidate - no fall back available
+                unset ENV_COMPILER
+                unset WEAK_ENV
+              fi
+            fi
+          else
+            debug "$i-$arch is a weak candidate for the Environment C compiler"
+            if [[ -n ${WEAK_ENV+x} ]] ; then
+              if [[ -z ${WEAK_ENV} ]] ; then
+                WEAK_ENV=$i-$arch
+              else
+                # More than one weak candidate - no fall back available
+                unset WEAK_ENV
+              fi
+            fi
+          fi
+        fi
+      fi
+    fi
+  done
+
+  # Does this package match the current preference? Note that PREFERENCE and TEST are constructed in
+  # a cunning (and hopefully not too "You are not expected to understand this" way) such that $PREF
+  # will always equal $i, unless $PREF = "@".
+  if [[ $PREF = $i ]] ; then
+    # In which case, check that the architecture(s)s were found
+    if [[ -n ${FOUND["$i-$LEFT_ARCH"]+x} && -n ${FOUND["$i-$RIGHT_ARCH"]+x} ]] ; then
+      debug "Solved TARGET_ARCH=$TARGET_ARCH with $i"
+      SOLUTION=$i
+      break
+    fi
+  fi
+
+  if [[ $PREF != "@" ]] ; then
+    ((pref++))
+    PREF=${PREFERENCE[$pref]}
+  fi
+done
+
+# If we got this far, then either we failed to find a compiler at all, or we were looking for the
+# environment compiler (or --all was specified).
+
+# Adopt a weak match for the environment compiler, if that's the best we can do.
+if [[ -n ${ENV_COMPILER+x} && -z ${ENV_COMPILER} && -n ${WEAK_ENV} ]] ; then
+  warning "Assuming Environment C compiler is $WEAK_ENV"
+  ENV_COMPILER=$WEAK_ENV
+fi
+
+declare -A FLIP
+FLIP=(["x86"]="x64" ["x64"]="x86")
+
+if [[ $MODE -eq 0 ]] ; then
+  if [[ $PREF = "@" && -n ${ENV_COMPILER} ]] ; then
+    SOLUTION=${ENV_COMPILER%-$ENV_ARCH}
+    # If --arch wasn't specified, then ensure that the other architecture was also found. If --arch
+    # was specified, then validate that the compiler was valid. This should always happen, unless
+    # something went wrong running the script to get MSVS_PATH, MSVS_LIB and MSVS_INC.
+    if [[ -n ${FOUND["$SOLUTION-${FLIP[$ENV_ARCH]}"]+x} ||
+          -n ${FOUND["$SOLUTION-$TARGET_ARCH"]+x} ]] ; then
+      debug "Solved with $SOLUTION"
+    else
+      unset SOLUTION
+      unset ENV_ARCH
+    fi
+  fi
+
+  if [[ -z ${SOLUTION+x} ]] ; then
+    ((pref++))
+    debug "Search remaining: ${PREFERENCE[*]}"
+    TEST_ARCH=$TARGET_ARCH
+    for i in "${PREFERENCE[@]:$pref}" ; do
+      if [[ -n ${FOUND["$i-$LEFT_ARCH"]+x} && -n ${FOUND["$i-$RIGHT_ARCH"]+x} ]] ; then
+        debug "Solved TARGET_ARCH='$TARGET_ARCH' with $i"
+        SOLUTION=$i
+        break
+      fi
+    done
+  fi
+fi
+
+debug "Solution: $SOLUTION"
+
+if [[ -n ${ENV_COMPILER} && $MODE -eq 1 ]] ; then
+  echo "Identified Environment C compiler as $ENV_COMPILER"
+fi
+
+if [[ $MODE -eq 1 ]] ; then
+  echo "Installed and usable packages:"
+  for i in "${!FOUND[@]}" ; do
+    echo "  $i"
+  done | sort
+  exit 0
+fi
+
+if [[ -n $SOLUTION ]] ; then
+  eval COMPILER=${FOUND[$SOLUTION-$LEFT_ARCH]}
+  output MSVS_NAME "${COMPILER["DISPLAY"]}" $LEFT_ARCH
+  output MSVS_PATH "${COMPILER["MSVS_PATH"]}" $LEFT_ARCH
+  output MSVS_INC "${COMPILER["MSVS_INC"]}" $LEFT_ARCH
+  output MSVS_LIB "${COMPILER["MSVS_LIB"]}" $LEFT_ARCH
+  if [[ $ML_REQUIRED -eq 1 ]] ; then
+    output MSVS_ML "${COMPILER["ASSEMBLER"]%.exe}" always
+  fi
+  if [[ -z $TARGET_ARCH ]] ; then
+    eval COMPILER=${FOUND[$SOLUTION-$RIGHT_ARCH]}
+    output MSVS64_PATH "${COMPILER["MSVS_PATH"]}" $RIGHT_ARCH
+    output MSVS64_INC "${COMPILER["MSVS_INC"]}" $RIGHT_ARCH
+    output MSVS64_LIB "${COMPILER["MSVS_LIB"]}" $RIGHT_ARCH
+    if [[ $ML_REQUIRED -eq 1 ]] ; then
+      output MSVS64_ML "${COMPILER["ASSEMBLER"]%.exe}" always
+    fi
+  fi
+  exit 0
+else
+  exit 1
+fi
+
diff --git a/version.ml.in b/version.ml.in
new file mode 100644
index 0000000..b4c038d
--- /dev/null
+++ b/version.ml.in
@@ -0,0 +1,3 @@
+let version = "@PACKAGE_VERSION@"
+let mingw_prefix = "@MINGW_PREFIX@"
+let mingw64_prefix = "@MINGW64_PREFIX@"