m4_include(../config/acx.m4) m4_include(../config/no-executables.m4) m4_include(../config/math.m4) m4_include(../config/ax_check_define.m4) m4_include(../config/enable.m4) m4_include(../config/cet.m4) dnl Check that we have a working GNU Fortran compiler AC_DEFUN([LIBGFOR_WORKING_GFORTRAN], [ AC_MSG_CHECKING([whether the GNU Fortran compiler is working]) AC_LANG_PUSH([Fortran]) AC_COMPILE_IFELSE([[ program foo real, parameter :: bar = sin (12.34 / 2.5) end program foo]], [AC_MSG_RESULT([yes])], [AC_MSG_RESULT([no]) AC_MSG_ERROR([GNU Fortran is not working; please report a bug in http://gcc.gnu.org/bugzilla, attaching $PWD/config.log]) ]) AC_LANG_POP([Fortran]) ]) sinclude(../libtool.m4) dnl The lines below arrange for aclocal not to bring an installed dnl libtool.m4 into aclocal.m4, while still arranging for automake to dnl add a definition of LIBTOOL to Makefile.in. ifelse(,,,[AC_SUBST(LIBTOOL) AC_DEFUN([AM_PROG_LIBTOOL]) AC_DEFUN([AC_LIBTOOL_DLOPEN]) AC_DEFUN([AC_PROG_LD]) ]) dnl Check whether the target supports hidden visibility. AC_DEFUN([LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY], [ AC_CACHE_CHECK([whether the target supports hidden visibility], libgfor_cv_have_attribute_visibility, [ save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -Werror" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[void __attribute__((visibility("hidden"))) foo(void) { }]], [])], libgfor_cv_have_attribute_visibility=yes, libgfor_cv_have_attribute_visibility=no) CFLAGS="$save_CFLAGS"]) if test $libgfor_cv_have_attribute_visibility = yes; then AC_DEFINE(HAVE_ATTRIBUTE_VISIBILITY, 1, [Define to 1 if the target supports __attribute__((visibility(...))).]) fi]) dnl Check whether the target supports symbol aliases. AC_DEFUN([LIBGFOR_CHECK_ATTRIBUTE_ALIAS], [ AC_CACHE_CHECK([whether the target supports symbol aliases], libgfor_cv_have_attribute_alias, [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[ void foo(void) { } extern void bar(void) __attribute__((alias("foo")));]], [[bar();]])], libgfor_cv_have_attribute_alias=yes, libgfor_cv_have_attribute_alias=no)]) if test $libgfor_cv_have_attribute_alias = yes; then AC_DEFINE(HAVE_ATTRIBUTE_ALIAS, 1, [Define to 1 if the target supports __attribute__((alias(...))).]) fi]) dnl Check whether the target supports __atomic_fetch_add. AC_DEFUN([LIBGFOR_CHECK_ATOMIC_FETCH_ADD], [ AC_CACHE_CHECK([whether the target supports __atomic_fetch_add], libgfor_cv_have_atomic_fetch_add, [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foovar = 0;]], [[ if (foovar <= 0) return __atomic_fetch_add (&foovar, 1, __ATOMIC_ACQ_REL); if (foovar > 10) return __atomic_add_fetch (&foovar, -1, __ATOMIC_ACQ_REL);]])], libgfor_cv_have_atomic_fetch_add=yes, libgfor_cv_have_atomic_fetch_add=no)]) if test $libgfor_cv_have_atomic_fetch_add = yes; then AC_DEFINE(HAVE_ATOMIC_FETCH_ADD, 1, [Define to 1 if the target supports __atomic_fetch_add]) fi]) dnl Check for pragma weak. AC_DEFUN([LIBGFOR_GTHREAD_WEAK], [ AC_CACHE_CHECK([whether pragma weak works], libgfor_cv_have_pragma_weak, [ gfor_save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -Wunknown-pragmas" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ void foo (void); #pragma weak foo ]], [[if (foo) foo ();]])], libgfor_cv_have_pragma_weak=yes, libgfor_cv_have_pragma_weak=no)]) if test $libgfor_cv_have_pragma_weak = yes; then AC_DEFINE(SUPPORTS_WEAK, 1, [Define to 1 if the target supports #pragma weak]) fi case "$host" in *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | *-*-musl* ) AC_DEFINE(GTHREAD_USE_WEAK, 0, [Define to 0 if the target shouldn't use #pragma weak]) ;; esac]) dnl Check whether target effectively supports weakref AC_DEFUN([LIBGFOR_CHECK_WEAKREF], [ AC_CACHE_CHECK([whether the target supports weakref], libgfor_cv_have_weakref, [ save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -Wunknown-pragmas -Werror" AC_LINK_IFELSE([AC_LANG_PROGRAM([[ static int mytoto (int) __attribute__((__weakref__("toto"))); ]], [[return (mytoto != 0);]])], libgfor_cv_have_weakref=yes, libgfor_cv_have_weakref=no) CFLAGS="$save_CFLAGS"]) if test $libgfor_cv_have_weakref = yes; then AC_DEFINE(SUPPORTS_WEAKREF, 1, [Define to 1 if the target supports weakref]) fi]) dnl Check whether target can unlink a file still open. AC_DEFUN([LIBGFOR_CHECK_UNLINK_OPEN_FILE], [ AC_CACHE_CHECK([whether the target can unlink an open file], libgfor_cv_have_unlink_open_file, [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include #include int main () { int fd; fd = open ("testfile", O_RDWR | O_CREAT, S_IWUSR | S_IRUSR); if (fd <= 0) return 0; if (unlink ("testfile") == -1) return 1; write (fd, "This is a test\n", 15); close (fd); if (open ("testfile", O_RDONLY) == -1 && errno == ENOENT) return 0; else return 1; }]])], libgfor_cv_have_unlink_open_file=yes, libgfor_cv_have_unlink_open_file=no, [ case "${target}" in *mingw*) libgfor_cv_have_unlink_open_file=no ;; *) libgfor_cv_have_unlink_open_file=yes;; esac])]) if test x"$libgfor_cv_have_unlink_open_file" = xyes; then AC_DEFINE(HAVE_UNLINK_OPEN_FILE, 1, [Define if target can unlink open files.]) fi]) dnl Check whether CRLF is the line terminator AC_DEFUN([LIBGFOR_CHECK_CRLF], [ AC_CACHE_CHECK([whether the target has CRLF as line terminator], libgfor_cv_have_crlf, [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ /* This test program should exit with status 0 if system uses a CRLF as line terminator, and status 1 otherwise. Since it is used to check for mingw systems, and should return 0 in any other case, in case of a failure we will not use CRLF. */ #include #include #include #include int main () { #ifndef O_BINARY exit(1); #else int fd, bytes; char buff[5]; fd = open ("foo", O_WRONLY | O_CREAT | O_TRUNC, S_IRWXU); if (fd < 0) exit(1); if (write (fd, "\n", 1) < 0) perror ("write"); close (fd); if ((fd = open ("foo", O_RDONLY | O_BINARY, S_IRWXU)) < 0) exit(1); bytes = read (fd, buff, 5); if (bytes == 2 && buff[0] == '\r' && buff[1] == '\n') exit(0); else exit(1); #endif }]])], libgfor_cv_have_crlf=yes, libgfor_cv_have_crlf=no, [ case "${target}" in *mingw*) libgfor_cv_have_crlf=yes ;; *) libgfor_cv_have_crlf=no;; esac])]) if test x"$libgfor_cv_have_crlf" = xyes; then AC_DEFINE(HAVE_CRLF, 1, [Define if CRLF is line terminator.]) fi]) dnl Check whether the st_ino and st_dev stat fields taken together uniquely dnl identify the file within the system. This is should be true for POSIX dnl systems; it is known to be false on mingw32. AC_DEFUN([LIBGFOR_CHECK_WORKING_STAT], [ AC_CACHE_CHECK([whether the target stat is reliable], libgfor_cv_have_working_stat, [ AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include #include #include #include int main () { FILE *f, *g; struct stat st1, st2; f = fopen ("foo", "w"); g = fopen ("bar", "w"); if (stat ("foo", &st1) != 0 || stat ("bar", &st2)) return 1; if (st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino) return 1; fclose(f); fclose(g); return 0; }]])], libgfor_cv_have_working_stat=yes, libgfor_cv_have_working_stat=no, [ case "${target}" in *mingw*) libgfor_cv_have_working_stat=no ;; *) libgfor_cv_have_working_stat=yes;; esac])]) if test x"$libgfor_cv_have_working_stat" = xyes; then AC_DEFINE(HAVE_WORKING_STAT, 1, [Define if target has a reliable stat.]) fi]) dnl Checks for fpsetmask function. AC_DEFUN([LIBGFOR_CHECK_FPSETMASK], [ AC_CACHE_CHECK([whether fpsetmask is present], libgfor_cv_have_fpsetmask, [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #if HAVE_FLOATINGPOINT_H # include #endif /* HAVE_FLOATINGPOINT_H */ #if HAVE_IEEEFP_H # include #endif /* HAVE_IEEEFP_H */]],[[fpsetmask(0);]])], eval "libgfor_cv_have_fpsetmask=yes", eval "libgfor_cv_have_fpsetmask=no") ]) if test x"$libgfor_cv_have_fpsetmask" = xyes; then have_fpsetmask=yes AC_DEFINE(HAVE_FPSETMASK, 1, [Define if you have fpsetmask.]) fi ]) dnl Check whether we have a mingw that provides a __mingw_snprintf function AC_DEFUN([LIBGFOR_CHECK_MINGW_SNPRINTF], [ AC_CACHE_CHECK([whether __mingw_snprintf is present], libgfor_cv_have_mingw_snprintf, [ AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include extern int __mingw_snprintf (char *, size_t, const char *, ...); ]],[[ __mingw_snprintf (NULL, 0, "%d\n", 1); ]])], eval "libgfor_cv_have_mingw_snprintf=yes", eval "libgfor_cv_have_mingw_snprintf=no") ]) if test x"$libgfor_cv_have_mingw_snprintf" = xyes; then AC_DEFINE(HAVE_MINGW_SNPRINTF, 1, [Define if you have __mingw_snprintf.]) fi ]) dnl Check whether we have a __float128 and _Float128 type AC_DEFUN([LIBGFOR_CHECK_FLOAT128], [ LIBQUADSPEC= LIBQUADLIB= LIBQUADLIB_DEP= LIBQUADINCLUDE= USE_IEC_60559=no if test "x$enable_libquadmath_support" != xno; then AC_CACHE_CHECK([whether we have a usable _Float128 type], libgfor_cv_have_float128, [ GCC_TRY_COMPILE_OR_LINK([ _Float128 foo (_Float128 x) { _Complex _Float128 z1, z2; z1 = x; z2 = x / 7.F128; z2 /= z1; return (_Float128) z2; } _Float128 bar (_Float128 x) { return x * __builtin_huge_valf128 (); } __float128 baz (__float128 x) { return x * __builtin_huge_valf128 (); } ],[ foo (1.2F128); bar (1.2F128); baz (1.2F128); foo (1.2Q); bar (1.2Q); baz (1.2Q); ],[ libgfor_cv_have_float128=yes ],[ libgfor_cv_have_float128=no ])]) if test "x$have_iec_60559_libc_support$enable_libquadmath_support$libgfor_cv_have_float128" = xyesdefaultyes; then USE_IEC_60559=yes fi if test "x$libgfor_cv_have_float128" = xyes; then if test "x$USE_IEC_60559" = xyes; then AC_DEFINE(USE_IEC_60559, 1, [Define if IEC 60559 *f128 APIs should be used for _Float128.]) fi AC_DEFINE(HAVE_FLOAT128, 1, [Define if target has usable _Float128 and __float128 types.]) dnl Check whether -Wl,--as-needed resp. -Wl,-zignore is supported dnl dnl Turn warnings into error to avoid testsuite breakage. So enable dnl AC_LANG_WERROR, but there's currently (autoconf 2.64) no way to turn dnl it off again. As a workaround, save and restore werror flag like dnl AC_PATH_XTRA. dnl Cf. http://gcc.gnu.org/ml/gcc-patches/2010-05/msg01889.html ac_xsave_[]_AC_LANG_ABBREV[]_werror_flag=$ac_[]_AC_LANG_ABBREV[]_werror_flag AC_CACHE_CHECK([whether --as-needed/-z ignore works], [libgfor_cv_have_as_needed], [ # Test for native Solaris options first. # No whitespace after -z to pass it through -Wl. libgfor_cv_as_needed_option="-zignore" libgfor_cv_no_as_needed_option="-zrecord" save_LDFLAGS="$LDFLAGS" LDFLAGS="$LDFLAGS -Wl,$libgfor_cv_as_needed_option -lm -Wl,$libgfor_cv_no_as_needed_option" libgfor_cv_have_as_needed=no AC_LANG_WERROR AC_LINK_IFELSE([AC_LANG_PROGRAM([])], [libgfor_cv_have_as_needed=yes], [libgfor_cv_have_as_needed=no]) LDFLAGS="$save_LDFLAGS" if test "x$libgfor_cv_have_as_needed" = xno; then libgfor_cv_as_needed_option="--as-needed" libgfor_cv_no_as_needed_option="--no-as-needed" save_LDFLAGS="$LDFLAGS" LDFLAGS="$LDFLAGS -Wl,$libgfor_cv_as_needed_option -lm -Wl,$libgfor_cv_no_as_needed_option" libgfor_cv_have_as_needed=no AC_LANG_WERROR AC_LINK_IFELSE([AC_LANG_PROGRAM([])], [libgfor_cv_have_as_needed=yes], [libgfor_cv_have_as_needed=no]) LDFLAGS="$save_LDFLAGS" fi ac_[]_AC_LANG_ABBREV[]_werror_flag=$ac_xsave_[]_AC_LANG_ABBREV[]_werror_flag ]) dnl For static libgfortran linkage, depend on libquadmath only if needed. dnl If using *f128 APIs from libc/libm, depend on libquadmath only if needed dnl even for dynamic libgfortran linkage, and don't link libgfortran against dnl -lquadmath. if test "x$libgfor_cv_have_as_needed" = xyes; then if test "x$USE_IEC_60559" = xyes; then LIBQUADSPEC="$libgfor_cv_as_needed_option -lquadmath $libgfor_cv_no_as_needed_option" else LIBQUADSPEC="%{static-libgfortran:$libgfor_cv_as_needed_option} -lquadmath %{static-libgfortran:$libgfor_cv_no_as_needed_option}" fi else LIBQUADSPEC="-lquadmath" fi if test "x$USE_IEC_60559" != xyes; then if test -f ../libquadmath/libquadmath.la; then LIBQUADLIB=../libquadmath/libquadmath.la LIBQUADLIB_DEP=../libquadmath/libquadmath.la LIBQUADINCLUDE='-I$(srcdir)/../libquadmath' else LIBQUADLIB="-lquadmath" fi fi else USE_IEC_60559=no fi fi dnl For the spec file AC_SUBST(LIBQUADSPEC) AC_SUBST(LIBQUADLIB) AC_SUBST(LIBQUADLIB_DEP) AC_SUBST(LIBQUADINCLUDE) AC_SUBST(USE_IEC_60559) ]) dnl Check whether we have strerror_r AC_DEFUN([LIBGFOR_CHECK_STRERROR_R], [ dnl Check for three-argument POSIX version of strerror_r ac_save_CFLAGS="$CFLAGS" CFLAGS="-Wimplicit-function-declaration -Werror" AC_TRY_COMPILE([#define _GNU_SOURCE 1 #include #include ], [char s[128]; strerror_r(5, s, 128);], AC_DEFINE(HAVE_STRERROR_R, 1, [Define if strerror_r is available in .]),) CFLAGS="$ac_save_CFLAGS" dnl Check for two-argument version of strerror_r (e.g. for VxWorks) ac_save_CFLAGS="$CFLAGS" CFLAGS="-Wimplicit-function-declaration -Werror" AC_TRY_COMPILE([#define _GNU_SOURCE 1 #include #include ], [char s[128]; strerror_r(5, s);], AC_DEFINE(HAVE_STRERROR_R_2ARGS, 1, [Define if strerror_r takes two arguments and is available in .]),) CFLAGS="$ac_save_CFLAGS" ]) dnl Check for AVX AC_DEFUN([LIBGFOR_CHECK_AVX], [ ac_save_CFLAGS="$CFLAGS" CFLAGS="-O2 -mavx" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ void _mm256_zeroall (void) { __builtin_ia32_vzeroall (); }]], [[]])], AC_DEFINE(HAVE_AVX, 1, [Define if AVX instructions can be compiled.]), []) CFLAGS="$ac_save_CFLAGS" ]) dnl Check for AVX2 AC_DEFUN([LIBGFOR_CHECK_AVX2], [ ac_save_CFLAGS="$CFLAGS" CFLAGS="-O2 -mavx2" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ typedef long long __v4di __attribute__ ((__vector_size__ (32))); __v4di mm256_is32_andnotsi256 (__v4di __X, __v4di __Y) { return __builtin_ia32_andnotsi256 (__X, __Y); }]], [[]])], AC_DEFINE(HAVE_AVX2, 1, [Define if AVX2 instructions can be compiled.]), []) CFLAGS="$ac_save_CFLAGS" ]) dnl Check for AVX512f AC_DEFUN([LIBGFOR_CHECK_AVX512F], [ ac_save_CFLAGS="$CFLAGS" CFLAGS="-O2 -mavx512f" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ typedef double __m512d __attribute__ ((__vector_size__ (64))); __m512d _mm512_add (__m512d a) { __m512d b = __builtin_ia32_addpd512_mask (a, a, a, 1, 4); /* For -m64/-mx32 also verify that code will work even if the target uses call saved zmm16+ and needs to emit unwind info for them (e.g. on mingw). See PR79127. */ #ifdef __x86_64__ asm volatile ("" : : : "zmm16", "zmm17", "zmm18", "zmm19"); #endif return b; }]], [[]])], AC_DEFINE(HAVE_AVX512F, 1, [Define if AVX512f instructions can be compiled.]), []) CFLAGS="$ac_save_CFLAGS" ]) dnl Check for FMA3 dnl AC_DEFUN([LIBGFOR_CHECK_FMA3], [ ac_save_CFLAGS="$CFLAGS" CFLAGS="-O2 -mfma -mno-fma4" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ typedef float __m128 __attribute__ ((__vector_size__ (16))); typedef float __v4sf __attribute__ ((__vector_size__ (16))); __m128 _mm_macc_ps(__m128 __A, __m128 __B, __m128 __C) { return (__m128) __builtin_ia32_vfmaddps ((__v4sf)__A, (__v4sf)__B, (__v4sf)__C); }]], [[]])], AC_DEFINE(HAVE_FMA3, 1, [Define if FMA3 instructions can be compiled.]), []) CFLAGS="$ac_save_CFLAGS" ]) dnl Check for FMA4 dnl AC_DEFUN([LIBGFOR_CHECK_FMA4], [ ac_save_CFLAGS="$CFLAGS" CFLAGS="-O2 -mfma4 -mno-fma" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ typedef float __m128 __attribute__ ((__vector_size__ (16))); typedef float __v4sf __attribute__ ((__vector_size__ (16))); __m128 _mm_macc_ps(__m128 __A, __m128 __B, __m128 __C) { return (__m128) __builtin_ia32_vfmaddps ((__v4sf)__A, (__v4sf)__B, (__v4sf)__C); }]], [[]])], AC_DEFINE(HAVE_FMA4, 1, [Define if FMA4 instructions can be compiled.]), []) CFLAGS="$ac_save_CFLAGS" ]) dnl Check for -mprefer-avx128 dnl This also defines an automake conditional. AC_DEFUN([LIBGFOR_CHECK_AVX128], [ ac_save_CFLAGS="$CFLAGS" CFLAGS="-O2 -mavx -mprefer-avx128" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ void foo() { }]], [[]])], AC_DEFINE(HAVE_AVX128, 1, [Define if -mprefer-avx128 is supported.]) AM_CONDITIONAL([HAVE_AVX128],true), [AM_CONDITIONAL([HAVE_AVX128],false)]) CFLAGS="$ac_save_CFLAGS" ]) AC_DEFUN([LIBGFOR_CHECK_MATH_IEEE128], [ AC_REQUIRE([GCC_CHECK_LIBM]) AC_REQUIRE([GCC_CHECK_MATH_HEADERS]) AC_CACHE_CHECK([for $1], [gcc_cv_math_func_$1], [AC_LINK_IFELSE([AC_LANG_SOURCE([ _Float128 $1 (_Float128); _Float128 (*ptr)(_Float128) = $1; int main () { return 0; } ])], [gcc_cv_math_func_$1=yes], [gcc_cv_math_func_$1=no])]) if test $gcc_cv_math_func_$1 = yes; then AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_$1),[1], [Define to 1 if you have the `$1' function.]) fi ])