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configure.ac
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configure.ac
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AC_INIT([re-flex],[5.1.0],[https://github.com/Genivia/RE-flex/issues],[reflex])
AM_INIT_AUTOMAKE([foreign subdir-objects])
AC_CONFIG_HEADERS([config.h])
AC_COPYRIGHT([Copyright (C) 2016-2024 Robert van Engelen, Genivia Inc.])
AC_TYPE_SIZE_T
AC_TYPE_OFF_T
AC_TYPE_UINT8_T
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
# if CXXFLAGS is undefined, set it to our preferred default flags
: ${CXXFLAGS="-Wall -Wextra -Wunused -Wshadow -O2"}
AC_LANG([C++])
AC_PROG_CXX
AM_PROG_AR
AC_PROG_RANLIB
AC_PROG_INSTALL
AC_CHECK_HEADERS([sys/time.h])
# removed to avoid MaxOS libtool issues, alas...
# LT_INIT
AC_PROG_YACC
AC_SUBST(YACC)
AC_CANONICAL_HOST
PLATFORM=${host}
AC_SUBST(PLATFORM)
################################################################################
# Use SIMD CPU extensions and manage cross compilation
################################################################################
# --disable-sse2 fallback option if cross compilation fails to disable SSE2 CPU extensions
AC_ARG_ENABLE(sse2,
[AS_HELP_STRING([--disable-sse2],
[disable SSE2 CPU extensions])],
[with_no_sse2="yes"],
[with_no_sse2="no"])
# --disable-avx2 fallback option if cross compilation fails to disable AVX2/AVX512BW CPU extensions
AC_ARG_ENABLE(avx2,
[AS_HELP_STRING([--disable-avx2],
[disable AVX2/AVX512BW CPU extensions])],
[with_no_avx2="yes"],
[with_no_avx2="no"])
# --disable-neon fallback option if cross compilation fails to disable NEON/AArch64 CPU extensions
AC_ARG_ENABLE(neon,
[AS_HELP_STRING([--disable-neon],
[disable NEON CPU extensions])],
[with_no_neon="yes"],
[with_no_neon="no"])
# SIMD_FLAGS applies to all source code
SIMD_FLAGS=
# SIMD_AVX2_FLAGS applies to lib/matcher_avx2.cpp which is selected based on a runtime AVX2 check
SIMD_AVX2_FLAGS=
# SIMD_AVX512BW_FLAGS applies to lib/matcher_avx512bw.cpp which is selected based on a runtime AVX512BW check
SIMD_AVX512BW_FLAGS=
if test "x$cross_compiling" = "xyes"; then
# cross compiling to a host CPU: check support for SIMD CPU extension compile flags
case $host_cpu in
i[[3456]]86*|x86_64*|amd64*)
# enable SSE2/AVX2/AVX512BW extensions
if ! test "x$with_no_sse2" = "xyes"; then
AC_MSG_CHECKING([whether ${CXX} supports SSE2 intrinsics])
save_CXXFLAGS=$CXXFLAGS
CXXFLAGS="-msse2"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <emmintrin.h>]], [[__m128i n = _mm_set1_epi8(42);]])],
[msse2_ok=yes],
[msse2_ok=no])
CXXFLAGS=$save_CXXFLAGS
AC_MSG_RESULT($msse2_ok)
if test "x$msse2_ok" = "xyes"; then
SIMD_FLAGS="-msse2 -DHAVE_SSE2"
if ! test "x$with_no_avx2" = "xyes"; then
AC_MSG_CHECKING([whether ${CXX} supports AVX2/AVX512BW intrinsics])
save_CXXFLAGS=$CXXFLAGS
CXXFLAGS="-mavx512bw"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <immintrin.h>]], [[__m512i n = _mm512_set1_epi8(42); (void)_mm512_cmpeq_epi8_mask(n, n);]])],
[mavx_ok=yes],
[mavx_ok=no])
if test "x$mavx_ok" = "xyes"; then
SIMD_FLAGS="-msse2 -DHAVE_AVX512BW"
SIMD_AVX2_FLAGS="-mavx2"
SIMD_AVX512BW_FLAGS="-mavx512bw"
else
CXXFLAGS="-mavx2"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <immintrin.h>]], [[__m256i n = _mm256_set1_epi8(42); (void)_mm256_movemask_epi8(_mm256_and_si256(n, n));]])],
[mavx_ok=yes],
[mavx_ok=no])
if test "x$mavx_ok" = "xyes"; then
SIMD_FLAGS="-msse2 -DHAVE_AVX2"
SIMD_AVX2_FLAGS="-mavx2"
fi
fi
CXXFLAGS=$save_CXXFLAGS
AC_MSG_RESULT($mavx_ok)
fi
fi
fi
;;
armv5*|armv6*)
;;
arm*)
# enable arm >= 7 neon extensions with option -mfpu=neon
if ! test "x$with_no_neon" = "xyes"; then
AC_MSG_CHECKING([whether ${CXX} supports ARM NEON/AArch64 intrinsics])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <arm_neon.h>]], [[uint64x2_t n; uint64_t m = vgetq_lane_u64(n, 0);]])],
[mneon_ok=yes],
[mneon_ok=no])
if test "x$mneon_ok" = "xyes"; then
SIMD_FLAGS="-DHAVE_NEON"
else
save_CXXFLAGS=$CXXFLAGS
CXXFLAGS="-mfpu=neon"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <arm_neon.h>]], [[uint64x2_t n; uint64_t m = vgetq_lane_u64(n, 0);]])],
[mneon_ok=yes],
[mneon_ok=no])
if test "x$mneon_ok" = "xyes"; then
SIMD_FLAGS="-mfpu=neon -DHAVE_NEON"
else
# this is iffy,,,
CXXFLAGS="-march=native -mfpu=neon"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <arm_neon.h>]], [[uint64x2_t n; uint64_t m = vgetq_lane_u64(n, 0);]])],
[mneon_ok=yes],
[mneon_ok=no])
if test "x$mneon_ok" = "xyes"; then
SIMD_FLAGS="-march=native -mfpu=neon -DHAVE_NEON"
fi
fi
CXXFLAGS=$save_CXXFLAGS
fi
AC_MSG_RESULT($mneon_ok)
fi
;;
aarch64*)
# enable AArch64 neon extensions
if ! test "x$with_no_neon" = "xyes"; then
SIMD_FLAGS="-DHAVE_NEON"
fi
;;
esac
else
if ! test "x$with_no_sse2" = "xyes"; then
AC_MSG_CHECKING([whether ${CXX} supports SSE2 intrinsics])
save_CXXFLAGS=$CXXFLAGS
CXXFLAGS="-msse2"
AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <emmintrin.h>]],[[__m128i n = _mm_set1_epi8(42);]])],
[msse2_ok=yes],
[msse2_ok=no])
CXXFLAGS=$save_CXXFLAGS
AC_MSG_RESULT($msse2_ok)
if test "x$msse2_ok" = "xyes"; then
SIMD_FLAGS="-msse2 -DHAVE_SSE2"
AC_MSG_CHECKING(for --disable-avx)
if ! test "x$with_no_avx2" = "xyes"; then
AC_MSG_RESULT(no)
AC_MSG_CHECKING([whether ${CXX} supports AVX2/AVX512BW intrinsics])
save_CXXFLAGS=$CXXFLAGS
CXXFLAGS="-mavx512bw"
AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <immintrin.h>]],[[__m512i n = _mm512_set1_epi8(42); (void)_mm512_cmpeq_epi8_mask(n, n);]])],
[mavx_ok=yes],
[mavx_ok=no])
if test "x$mavx_ok" = "xyes"; then
SIMD_FLAGS="-msse2 -DHAVE_AVX512BW"
SIMD_AVX2_FLAGS="-mavx2"
SIMD_AVX512BW_FLAGS="-mavx512bw"
else
CXXFLAGS="-mavx2"
AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <immintrin.h>]],[[__m256i n = _mm256_set1_epi8(42); (void)_mm256_movemask_epi8(_mm256_and_si256(n, n));]])],
[mavx_ok=yes],
[mavx_ok=no])
if test "x$mavx_ok" = "xyes"; then
SIMD_FLAGS="-msse2 -DHAVE_AVX2"
SIMD_AVX2_FLAGS="-mavx2"
fi
fi
CXXFLAGS=$save_CXXFLAGS
AC_MSG_RESULT($mavx_ok)
else
AC_MSG_RESULT(yes)
fi
fi
fi
if test -z "$SIMD_FLAGS"; then
if ! test "x$with_no_neon" = "xyes"; then
AC_MSG_CHECKING([whether ${CXX} supports NEON/AArch64 intrinsics])
AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <arm_neon.h>]],[[uint64x2_t n; uint64_t m = vgetq_lane_u64(n, 0);]])],
[mneon_ok=yes],
[mneon_ok=no])
if test "x$mneon_ok" = "xyes"; then
SIMD_FLAGS="-DHAVE_NEON"
else
save_CXXFLAGS=$CXXFLAGS
CXXFLAGS="-mfpu=neon"
AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <arm_neon.h>]],[[uint64x2_t n; uint64_t m = vgetq_lane_u64(n, 0);]])],
[mneon_ok=yes],
[mneon_ok=no])
if test "x$mneon_ok" = "xyes"; then
SIMD_FLAGS="-mfpu=neon -DHAVE_NEON"
else
CXXFLAGS="-march=native -mfpu=neon"
AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <arm_neon.h>]],[[uint64x2_t n; uint64_t m = vgetq_lane_u64(n, 0);]])],
[mneon_ok=yes],
[mneon_ok=no])
if test "x$mneon_ok" = "xyes"; then
SIMD_FLAGS="-march=native -mfpu=neon -DHAVE_NEON"
fi
fi
CXXFLAGS=$save_CXXFLAGS
fi
AC_MSG_RESULT($mneon_ok)
fi
fi
fi
AC_SUBST(SIMD_FLAGS)
AC_SUBST(SIMD_AVX2_FLAGS)
AC_SUBST(SIMD_AVX512BW_FLAGS)
################################################################################
# Build the examples when requested, requires Bison
################################################################################
AC_ARG_ENABLE(examples,
[AS_HELP_STRING([--enable-examples],
[build examples @<:@default=no@:>@])],
[enable_examples=yes],
[enable_examples=no])
AM_CONDITIONAL([ENABLE_EXAMPLES],[test "x$enable_examples" = "xyes"])
AC_SUBST(ENABLE_EXAMPLES)
if test "x$enable_examples" = "xyes"; then
EXAMPLESDIR="examples"
else
EXAMPLESDIR=
fi
AC_SUBST(EXAMPLESDIR)
################################################################################
# Check for Doxygen to update manual, not a required dependency, manual included
################################################################################
AC_PATH_PROG(DOXYGEN,doxygen,NO_DOXYGEN)
if test "$DOXYGEN" = NO_DOXYGEN; then
AC_MSG_CHECKING([for Doxygen.app])
IFS=:
if test -d "/Applications/Doxygen.app"; then
DOXYGEN="/Applications/Doxygen.app/Contents/Resources/doxygen"
ac_cv_path_DOXYGEN="/Applications/Doxygen.app/Contents/Resources/doxygen"
fi
IFS=$as_save_IFS
if test "x$DOXYGEN" = "xNO_DOXYGEN"; then
AC_MSG_RESULT([not found])
else
AC_MSG_RESULT($DOXYGEN)
fi
fi
if test "x$DOXYGEN" = "xNO_DOXYGEN"; then
AC_MSG_NOTICE([Couldn't find Doxygen -- documentation updates cannot be built without Doxygen])
else
AC_CONFIG_FILES([doc/Doxyfile])
fi
DOXYGEN_OUTPUT_DIRECTORY="doc/html"
AC_SUBST(DOXYGEN_OUTPUT_DIRECTORY)
AC_CONFIG_FILES([Makefile lib/Makefile src/Makefile tests/Makefile examples/Makefile reflex.pc reflexmin.pc])
AC_OUTPUT