From e6afd99281cb29f17d338198fd8c9dd64f6fb7c3 Mon Sep 17 00:00:00 2001 From: david-cortes Date: Mon, 16 May 2022 15:16:25 +0300 Subject: [PATCH] Fix detection of OpenMP support in configure script (#73) * fix omp detection on linux * remove compiler-version-based OMP logic altogether --- configure | 1038 +---------------------------------------------- configure.ac | 100 ----- src/Makevars.in | 4 +- 3 files changed, 3 insertions(+), 1139 deletions(-) diff --git a/configure b/configure index 9031679..744b3dc 100755 --- a/configure +++ b/configure @@ -616,15 +616,6 @@ ac_unique_file="DESCRIPTION" ac_subst_vars='LTLIBOBJS LIBOBJS FLOAT_LIBS -OPENMP_FLAG -OPENMP_CXXFLAGS -OBJEXT -EXEEXT -ac_ct_CXX -CPPFLAGS -LDFLAGS -CXXFLAGS -CXX target_alias host_alias build_alias @@ -670,13 +661,7 @@ enable_option_checking ' ac_precious_vars='build_alias host_alias -target_alias -CXX -CXXFLAGS -LDFLAGS -LIBS -CPPFLAGS -CCC' +target_alias' # Initialize some variables set by options. @@ -1289,18 +1274,6 @@ if test -n "$ac_init_help"; then cat <<\_ACEOF -Some influential environment variables: - CXX C++ compiler command - CXXFLAGS C++ compiler flags - LDFLAGS linker flags, e.g. -L if you have libraries in a - nonstandard directory - LIBS libraries to pass to the linker, e.g. -l - CPPFLAGS (Objective) C/C++ preprocessor flags, e.g. -I if - you have headers in a nonstandard directory - -Use these variables to override the choices made by `configure' or to help -it to find libraries and programs with nonstandard names/locations. - Report bugs to the package provider. _ACEOF ac_status=$? @@ -1378,45 +1351,6 @@ fi ## ------------------------ ## ## Autoconf initialization. ## ## ------------------------ ## - -# ac_fn_cxx_try_compile LINENO -# ---------------------------- -# Try to compile conftest.$ac_ext, and return whether this succeeded. -ac_fn_cxx_try_compile () -{ - as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack - rm -f conftest.$ac_objext conftest.beam - if { { ac_try="$ac_compile" -case "(($ac_try" in - *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; - *) ac_try_echo=$ac_try;; -esac -eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\"" -printf "%s\n" "$ac_try_echo"; } >&5 - (eval "$ac_compile") 2>conftest.err - ac_status=$? - if test -s conftest.err; then - grep -v '^ *+' conftest.err >conftest.er1 - cat conftest.er1 >&5 - mv -f conftest.er1 conftest.err - fi - printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5 - test $ac_status = 0; } && { - test -z "$ac_cxx_werror_flag" || - test ! -s conftest.err - } && test -s conftest.$ac_objext -then : - ac_retval=0 -else $as_nop - printf "%s\n" "$as_me: failed program was:" >&5 -sed 's/^/| /' conftest.$ac_ext >&5 - - ac_retval=1 -fi - eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno - as_fn_set_status $ac_retval - -} # ac_fn_cxx_try_compile ac_configure_args_raw= for ac_arg do @@ -1712,222 +1646,6 @@ printf "%s\n" "$as_me: creating cache $cache_file" >&6;} >$cache_file fi -# Test code for whether the C++ compiler supports C++98 (global declarations) -ac_cxx_conftest_cxx98_globals=' -// Does the compiler advertise C++98 conformance? -#if !defined __cplusplus || __cplusplus < 199711L -# error "Compiler does not advertise C++98 conformance" -#endif - -// These inclusions are to reject old compilers that -// lack the unsuffixed header files. -#include -#include - -// and are *not* freestanding headers in C++98. -extern void assert (int); -namespace std { - extern int strcmp (const char *, const char *); -} - -// Namespaces, exceptions, and templates were all added after "C++ 2.0". -using std::exception; -using std::strcmp; - -namespace { - -void test_exception_syntax() -{ - try { - throw "test"; - } catch (const char *s) { - // Extra parentheses suppress a warning when building autoconf itself, - // due to lint rules shared with more typical C programs. - assert (!(strcmp) (s, "test")); - } -} - -template struct test_template -{ - T const val; - explicit test_template(T t) : val(t) {} - template T add(U u) { return static_cast(u) + val; } -}; - -} // anonymous namespace -' - -# Test code for whether the C++ compiler supports C++98 (body of main) -ac_cxx_conftest_cxx98_main=' - assert (argc); - assert (! argv[0]); -{ - test_exception_syntax (); - test_template tt (2.0); - assert (tt.add (4) == 6.0); - assert (true && !false); -} -' - -# Test code for whether the C++ compiler supports C++11 (global declarations) -ac_cxx_conftest_cxx11_globals=' -// Does the compiler advertise C++ 2011 conformance? -#if !defined __cplusplus || __cplusplus < 201103L -# error "Compiler does not advertise C++11 conformance" -#endif - -namespace cxx11test -{ - constexpr int get_val() { return 20; } - - struct testinit - { - int i; - double d; - }; - - class delegate - { - public: - delegate(int n) : n(n) {} - delegate(): delegate(2354) {} - - virtual int getval() { return this->n; }; - protected: - int n; - }; - - class overridden : public delegate - { - public: - overridden(int n): delegate(n) {} - virtual int getval() override final { return this->n * 2; } - }; - - class nocopy - { - public: - nocopy(int i): i(i) {} - nocopy() = default; - nocopy(const nocopy&) = delete; - nocopy & operator=(const nocopy&) = delete; - private: - int i; - }; - - // for testing lambda expressions - template Ret eval(Fn f, Ret v) - { - return f(v); - } - - // for testing variadic templates and trailing return types - template auto sum(V first) -> V - { - return first; - } - template auto sum(V first, Args... rest) -> V - { - return first + sum(rest...); - } -} -' - -# Test code for whether the C++ compiler supports C++11 (body of main) -ac_cxx_conftest_cxx11_main=' -{ - // Test auto and decltype - auto a1 = 6538; - auto a2 = 48573953.4; - auto a3 = "String literal"; - - int total = 0; - for (auto i = a3; *i; ++i) { total += *i; } - - decltype(a2) a4 = 34895.034; -} -{ - // Test constexpr - short sa[cxx11test::get_val()] = { 0 }; -} -{ - // Test initializer lists - cxx11test::testinit il = { 4323, 435234.23544 }; -} -{ - // Test range-based for - int array[] = {9, 7, 13, 15, 4, 18, 12, 10, 5, 3, - 14, 19, 17, 8, 6, 20, 16, 2, 11, 1}; - for (auto &x : array) { x += 23; } -} -{ - // Test lambda expressions - using cxx11test::eval; - assert (eval ([](int x) { return x*2; }, 21) == 42); - double d = 2.0; - assert (eval ([&](double x) { return d += x; }, 3.0) == 5.0); - assert (d == 5.0); - assert (eval ([=](double x) mutable { return d += x; }, 4.0) == 9.0); - assert (d == 5.0); -} -{ - // Test use of variadic templates - using cxx11test::sum; - auto a = sum(1); - auto b = sum(1, 2); - auto c = sum(1.0, 2.0, 3.0); -} -{ - // Test constructor delegation - cxx11test::delegate d1; - cxx11test::delegate d2(); - cxx11test::delegate d3(45); -} -{ - // Test override and final - cxx11test::overridden o1(55464); -} -{ - // Test nullptr - char *c = nullptr; -} -{ - // Test template brackets - test_template<::test_template> v(test_template(12)); -} -{ - // Unicode literals - char const *utf8 = u8"UTF-8 string \u2500"; - char16_t const *utf16 = u"UTF-8 string \u2500"; - char32_t const *utf32 = U"UTF-32 string \u2500"; -} -' - -# Test code for whether the C compiler supports C++11 (complete). -ac_cxx_conftest_cxx11_program="${ac_cxx_conftest_cxx98_globals} -${ac_cxx_conftest_cxx11_globals} - -int -main (int argc, char **argv) -{ - int ok = 0; - ${ac_cxx_conftest_cxx98_main} - ${ac_cxx_conftest_cxx11_main} - return ok; -} -" - -# Test code for whether the C compiler supports C++98 (complete). -ac_cxx_conftest_cxx98_program="${ac_cxx_conftest_cxx98_globals} -int -main (int argc, char **argv) -{ - int ok = 0; - ${ac_cxx_conftest_cxx98_main} - return ok; -} -" - # Check that the precious variables saved in the cache have kept the same # value. ac_cache_corrupted=false @@ -2013,760 +1731,6 @@ CXXFLAGS=$("${R_HOME}/bin/R" CMD config CXXFLAGS) FLOAT_LIBS=`${R_HOME}/bin/Rscript -e "float:::ldflags(static = (Sys.info()['sysname'] == 'Darwin'))"` #------------------------------------------------------ -# borrowed from https://github.com/RcppCore/RcppArmadillo/blob/c2fde536fe9b70238a95c2e2e413bca9681d23d2/configure.ac#L1 -#------------------------------------------------------ -## default to not even thinking about OpenMP as Armadillo wants a pragma -## variant available if and only if C++11 is used with g++ 5.4 or newer -can_use_openmp="" - -## Check the C++ compiler using the CXX value set - - - - - - -ac_ext=cpp -ac_cpp='$CXXCPP $CPPFLAGS' -ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5' -ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' -ac_compiler_gnu=$ac_cv_cxx_compiler_gnu -if test -z "$CXX"; then - if test -n "$CCC"; then - CXX=$CCC - else - if test -n "$ac_tool_prefix"; then - for ac_prog in g++ c++ gpp aCC CC cxx cc++ cl.exe FCC KCC RCC xlC_r xlC clang++ - do - # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args. -set dummy $ac_tool_prefix$ac_prog; ac_word=$2 -{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 -printf %s "checking for $ac_word... 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" >&6; } - gxx_version=$(${CXX} -v 2>&1 | awk '/^.*g.. version/ {print $3}') - case ${gxx_version} in - 1.*|2.*|3.*|4.0.*|4.1.*|4.2.*|4.3.*|4.4.*|4.5.*|4.6.*|4.7.0|4.7.1) - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 -printf "%s\n" "no" >&6; } - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: Only g++ version 4.7.2 or greater can be used with RcppArmadillo." >&5 -printf "%s\n" "$as_me: WARNING: Only g++ version 4.7.2 or greater can be used with RcppArmadillo." >&2;} - as_fn_error $? "Please use a different compiler." "$LINENO" 5 - ;; - 4.7.*|4.8.*|4.9.*|5.0*|5.1*|5.2*|5.3*) - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes, but without OpenMP as version ${gxx_version} (Armadillo constraint)" >&5 -printf "%s\n" "yes, but without OpenMP as version ${gxx_version} (Armadillo constraint)" >&6; } - ## we know this one is bad - can_use_openmp="no" - ;; - 5.4*|5.5*|5.6*|5.7*|5.8*|5.9*|6.*|7.*|8.*|9.*|10.*) - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes, with OpenMP as version ${gxx_version}" >&5 -printf "%s\n" "yes, with OpenMP as version ${gxx_version}" >&6; } - ## we know this one is good, yay - can_use_openmp="yes" - ;; - *) - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: almost" >&5 -printf "%s\n" "almost" >&6; } - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: Compiler self-identifies as being compliant with GNUC extensions but is not g++." >&5 -printf "%s\n" "$as_me: WARNING: Compiler self-identifies as being compliant with GNUC extensions but is not g++." >&2;} - ## we know nothing, so no - can_use_openmp="no" - ;; - esac -fi - -## Check for Apple LLVM - -{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for macOS" >&5 -printf %s "checking for macOS... " >&6; } -RSysinfoName=$("${R_HOME}/bin/Rscript" --vanilla -e 'cat(Sys.info()["sysname"])') - -if test x"${RSysinfoName}" = x"Darwin"; then - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: found" >&5 -printf "%s\n" "found" >&6; } - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for macOS Apple compiler" >&5 -printf %s "checking for macOS Apple compiler... " >&6; } - - apple_compiler=$($CXX --version 2>&1 | grep -i -c -e 'apple llvm') - - if test x"${apple_compiler}" = x"1"; then - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: found" >&5 -printf "%s\n" "found" >&6; } - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: OpenMP unavailable and turned off." >&5 -printf "%s\n" "$as_me: WARNING: OpenMP unavailable and turned off." >&2;} - can_use_openmp="no" - else - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: not found" >&5 -printf "%s\n" "not found" >&6; } - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for clang compiler" >&5 -printf %s "checking for clang compiler... " >&6; } - clang_compiler=$($CXX --version 2>&1 | grep -i -c -e 'clang ') - - if test x"${clang_compiler}" = x"1"; then - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: found" >&5 -printf "%s\n" "found" >&6; } - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for OpenMP compatible version of clang" >&5 -printf %s "checking for OpenMP compatible version of clang... " >&6; } - clang_version=$(${CXX} -v 2>&1 | awk '/^.*clang version/ {print $3}') - - case ${clang_version} in - 4.*|5.*|6.*|7.*|8.*) - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: found and suitable" >&5 -printf "%s\n" "found and suitable" >&6; } - can_use_openmp="yes" - ;; - *) - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: not found" >&5 -printf "%s\n" "not found" >&6; } - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: OpenMP unavailable and turned off." >&5 -printf "%s\n" "$as_me: WARNING: OpenMP unavailable and turned off." >&2;} - can_use_openmp="no" - ;; - esac - else - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: not found" >&5 -printf "%s\n" "not found" >&6; } - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: unsupported macOS build detected; if anything breaks, you keep the pieces." >&5 -printf "%s\n" "$as_me: WARNING: unsupported macOS build detected; if anything breaks, you keep the pieces." >&2;} - fi - fi -fi - -## Default the OpenMP flag to the empty string. -## If and only if OpenMP is found, expand to $(SHLIB_OPENMP_CXXFLAGS) -openmp_flag="" - -if test x"${can_use_openmp}" = x"yes"; then - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for OpenMP" >&5 -printf %s "checking for OpenMP... " >&6; } - ## if R has -fopenmp we should be good - allldflags=$(${R_HOME}/bin/R CMD config --ldflags) - hasOpenMP=$(echo ${allldflags} | grep -- -fopenmp) - if test x"${hasOpenMP}" = x""; then - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: missing" >&5 -printf "%s\n" "missing" >&6; } - else - { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: found and suitable" >&5 -printf "%s\n" "found and suitable" >&6; } - openmp_flag='$(SHLIB_OPENMP_CXXFLAGS)' - fi -fi - -#------------------------------------------------------ - - -OPENMP_FLAG="${openmp_flag}" ac_config_files="$ac_config_files src/Makevars" diff --git a/configure.ac b/configure.ac index b6bd4d0..31ac2bc 100644 --- a/configure.ac +++ b/configure.ac @@ -15,108 +15,8 @@ CXXFLAGS=$("${R_HOME}/bin/R" CMD config CXXFLAGS) ## configure float libs FLOAT_LIBS=`${R_HOME}/bin/Rscript -e "float:::ldflags(static = (Sys.info()[['sysname']] == 'Darwin'))"` -#------------------------------------------------------ -# borrowed from https://github.com/RcppCore/RcppArmadillo/blob/c2fde536fe9b70238a95c2e2e413bca9681d23d2/configure.ac#L1 -#------------------------------------------------------ -## default to not even thinking about OpenMP as Armadillo wants a pragma -## variant available if and only if C++11 is used with g++ 5.4 or newer -can_use_openmp="" - -## Check the C++ compiler using the CXX value set -AC_PROG_CXX -## If it is g++, we have GXX set so let's examine it -if test "${GXX}" = yes; then - AC_MSG_CHECKING([whether g++ version is sufficient]) - gxx_version=$(${CXX} -v 2>&1 | awk '/^.*g.. version/ {print $3}') - case ${gxx_version} in - 1.*|2.*|3.*|4.0.*|4.1.*|4.2.*|4.3.*|4.4.*|4.5.*|4.6.*|4.7.0|4.7.1) - AC_MSG_RESULT([no]) - AC_MSG_WARN([Only g++ version 4.7.2 or greater can be used with RcppArmadillo.]) - AC_MSG_ERROR([Please use a different compiler.]) - ;; - 4.7.*|4.8.*|4.9.*|5.0*|5.1*|5.2*|5.3*) - AC_MSG_RESULT([yes, but without OpenMP as version ${gxx_version} (Armadillo constraint)]) - ## we know this one is bad - can_use_openmp="no" - ;; - 5.4*|5.5*|5.6*|5.7*|5.8*|5.9*|6.*|7.*|8.*|9.*|10.*) - AC_MSG_RESULT([yes, with OpenMP as version ${gxx_version}]) - ## we know this one is good, yay - can_use_openmp="yes" - ;; - *) - AC_MSG_RESULT([almost]) - AC_MSG_WARN([Compiler self-identifies as being compliant with GNUC extensions but is not g++.]) - ## we know nothing, so no - can_use_openmp="no" - ;; - esac -fi - -## Check for Apple LLVM - -AC_MSG_CHECKING([for macOS]) -RSysinfoName=$("${R_HOME}/bin/Rscript" --vanilla -e 'cat(Sys.info()[["sysname"]])') - -if test x"${RSysinfoName}" = x"Darwin"; then - AC_MSG_RESULT([found]) - AC_MSG_CHECKING([for macOS Apple compiler]) - - apple_compiler=$($CXX --version 2>&1 | grep -i -c -e 'apple llvm') - - if test x"${apple_compiler}" = x"1"; then - AC_MSG_RESULT([found]) - AC_MSG_WARN([OpenMP unavailable and turned off.]) - can_use_openmp="no" - else - AC_MSG_RESULT([not found]) - AC_MSG_CHECKING([for clang compiler]) - clang_compiler=$($CXX --version 2>&1 | grep -i -c -e 'clang ') - - if test x"${clang_compiler}" = x"1"; then - AC_MSG_RESULT([found]) - AC_MSG_CHECKING([for OpenMP compatible version of clang]) - clang_version=$(${CXX} -v 2>&1 | awk '/^.*clang version/ {print $3}') - - case ${clang_version} in - 4.*|5.*|6.*|7.*|8.*) - AC_MSG_RESULT([found and suitable]) - can_use_openmp="yes" - ;; - *) - AC_MSG_RESULT([not found]) - AC_MSG_WARN([OpenMP unavailable and turned off.]) - can_use_openmp="no" - ;; - esac - else - AC_MSG_RESULT([not found]) - AC_MSG_WARN([unsupported macOS build detected; if anything breaks, you keep the pieces.]) - fi - fi -fi - -## Default the OpenMP flag to the empty string. -## If and only if OpenMP is found, expand to $(SHLIB_OPENMP_CXXFLAGS) -openmp_flag="" - -if test x"${can_use_openmp}" = x"yes"; then - AC_MSG_CHECKING([for OpenMP]) - ## if R has -fopenmp we should be good - allldflags=$(${R_HOME}/bin/R CMD config --ldflags) - hasOpenMP=$(echo ${allldflags} | grep -- -fopenmp) - if test x"${hasOpenMP}" = x""; then - AC_MSG_RESULT([missing]) - else - AC_MSG_RESULT([found and suitable]) - openmp_flag='$(SHLIB_OPENMP_CXXFLAGS)' - fi -fi - #------------------------------------------------------ -AC_SUBST(OPENMP_CXXFLAGS) -AC_SUBST([OPENMP_FLAG], ["${openmp_flag}"]) AC_SUBST(FLOAT_LIBS) AC_CONFIG_FILES([src/Makevars]) AC_OUTPUT diff --git a/src/Makevars.in b/src/Makevars.in index 2775913..bc8af66 100644 --- a/src/Makevars.in +++ b/src/Makevars.in @@ -1,5 +1,5 @@ PKG_CPPFLAGS = -DARMA_32BIT_WORD -I../inst/include/ -DRSPARSE_R_PKG -DARMA_NO_DEBUG -PKG_CXXFLAGS = @OPENMP_FLAG@ -PKG_LIBS = @OPENMP_FLAG@ @FLOAT_LIBS@ $(LAPACK_LIBS) $(BLAS_LIBS) $(FLIBS) +PKG_CXXFLAGS = $(SHLIB_OPENMP_CXXFLAGS) +PKG_LIBS = $(SHLIB_OPENMP_CXXFLAGS) @FLOAT_LIBS@ $(LAPACK_LIBS) $(BLAS_LIBS) $(FLIBS) CXX_STD = CXX11