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], [
[Define to 1 if the target supports __attribute__((visibility(...))).])
fi])
-dnl Check whether the target supports dllexport
-AC_DEFUN([LIBGFOR_CHECK_ATTRIBUTE_DLLEXPORT], [
- AC_CACHE_CHECK([whether the target supports dllexport],
- libgfor_cv_have_attribute_dllexport, [
- save_CFLAGS="$CFLAGS"
- CFLAGS="$CFLAGS -Werror"
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[void __attribute__((dllexport)) foo(void) { }]], [])],
- libgfor_cv_have_attribute_dllexport=yes,
- libgfor_cv_have_attribute_dllexport=no)
- CFLAGS="$save_CFLAGS"])
- if test $libgfor_cv_have_attribute_dllexport = yes; then
- AC_DEFINE(HAVE_ATTRIBUTE_DLLEXPORT, 1,
- [Define to 1 if the target supports __attribute__((dllexport)).])
- fi])
-
dnl Check whether the target supports symbol aliases.
AC_DEFUN([LIBGFOR_CHECK_ATTRIBUTE_ALIAS], [
AC_CACHE_CHECK([whether the target supports symbol aliases],
[Define to 1 if the target supports __attribute__((alias(...))).])
fi])
-dnl Check whether the target supports __sync_fetch_and_add.
-AC_DEFUN([LIBGFOR_CHECK_SYNC_FETCH_AND_ADD], [
- AC_CACHE_CHECK([whether the target supports __sync_fetch_and_add],
- libgfor_cv_have_sync_fetch_and_add, [
+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 __sync_fetch_and_add (&foovar, 1);
-if (foovar > 10) return __sync_add_and_fetch (&foovar, -1);]])],
- libgfor_cv_have_sync_fetch_and_add=yes, libgfor_cv_have_sync_fetch_and_add=no)])
- if test $libgfor_cv_have_sync_fetch_and_add = yes; then
- AC_DEFINE(HAVE_SYNC_FETCH_AND_ADD, 1,
- [Define to 1 if the target supports __sync_fetch_and_add])
- fi])
-
-dnl Check if threads are supported.
-AC_DEFUN([LIBGFOR_CHECK_GTHR_DEFAULT], [
- AC_CACHE_CHECK([configured target thread model],
- libgfor_cv_target_thread_file, [
-libgfor_cv_target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`])
-
- if test $libgfor_cv_target_thread_file != single; then
- AC_DEFINE(HAVE_GTHR_DEFAULT, 1,
- [Define if the compiler has a thread header that is non single.])
+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 $libgfor_cv_have_atomic_fetch_add = yes; then
+ AC_DEFINE(HAVE_ATOMIC_FETCH_ADD, 1,
+ [Define to 1 if the target supports __atomic_fetch_add])
fi])
dnl Check for pragma weak.
[Define to 1 if the target supports #pragma weak])
fi
case "$host" in
- *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | alpha*-dec-osf* )
+ *-*-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 $libgfor_cv_have_weakref = yes; then
+ AC_DEFINE(SUPPORTS_WEAKREF, 1,
+ [Define to 1 if the target supports weakref])
+ fi])
+
dnl Check whether target can unlink a file still open.
AC_DEFUN([LIBGFOR_CHECK_UNLINK_OPEN_FILE], [
AC_CACHE_CHECK([whether the target can unlink an open file],
{
int fd;
- fd = open ("testfile", O_RDWR | O_CREAT, S_IWRITE | S_IREAD);
+ fd = open ("testfile", O_RDWR | O_CREAT, S_IWUSR | S_IRUSR);
if (fd <= 0)
return 0;
if (unlink ("testfile") == -1)
write (fd, "This is a test\n", 15);
close (fd);
- if (open ("testfile", O_RDONLY, S_IWRITE | S_IREAD) == -1 && errno == ENOENT)
+ if (open ("testfile", O_RDONLY) == -1 && errno == ENOENT)
return 0;
else
return 1;
fi
])
-dnl Check whether we have a broken powf implementation
-AC_DEFUN([LIBGFOR_CHECK_FOR_BROKEN_POWF], [
- AC_CACHE_CHECK([whether powf is broken], libgfor_cv_have_broken_powf, [
-case "${target}" in
- hppa*64*-*-hpux*) libgfor_cv_have_broken_powf=yes ;;
- *) libgfor_cv_have_broken_powf=no;;
-esac])
- if test x"$libgfor_cv_have_broken_powf" = xyes; then
- AC_DEFINE(HAVE_BROKEN_POWF, 1, [Define if powf is broken.])
- fi
-])
-
dnl Check whether we have a __float128 type
AC_DEFUN([LIBGFOR_CHECK_FLOAT128], [
LIBQUADSPEC=
if test "x$libgfor_cv_have_float128" = xyes; then
AC_DEFINE(HAVE_FLOAT128, 1, [Define if have a usable __float128 type.])
- dnl Check whether -Wl,--as-needed is supported
+ 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 AC_PATH_XTRA.
dnl Cf. http://gcc.gnu.org/ml/gcc-patches/2010-05/msg01889.html
ac_xsave_[]_AC_LANG_ABBREV[]_werror_flag=$ac_[]_AC_LANG_ABBREV[]_werror_flag
- AC_CACHE_CHECK([whether --as-needed works],
+ AC_CACHE_CHECK([whether --as-needed/-z ignore works],
[libgfor_cv_have_as_needed],
[
+ # Test for native Solaris options first.
+ # No whitespace after -z to pass it through -Wl.
+ libgfor_cv_as_needed_option="-zignore"
+ libgfor_cv_no_as_needed_option="-zrecord"
save_LDFLAGS="$LDFLAGS"
- LDFLAGS="$LDFLAGS -Wl,--as-needed -lm -Wl,--no-as-needed"
+ LDFLAGS="$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.
if test "x$libgfor_cv_have_as_needed" = xyes; then
- LIBQUADSPEC="%{static-libgfortran:--as-needed} -lquadmath %{static-libgfortran:--no-as-needed}"
+ LIBQUADSPEC="%{static-libgfortran:$libgfor_cv_as_needed_option} -lquadmath %{static-libgfortran:$libgfor_cv_no_as_needed_option}"
else
LIBQUADSPEC="-lquadmath"
fi
dnl We need a conditional for the Makefile
AM_CONDITIONAL(LIBGFOR_BUILD_QUAD, [test "x$libgfor_cv_have_float128" = xyes])
])
+
+
+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="$CFLAGS"
+ CFLAGS="-Wimplicit-function-declaration -Werror"
+ AC_TRY_COMPILE([#define _GNU_SOURCE 1
+ #include <string.h>
+ #include <locale.h>],
+ [char s[128]; strerror_r(5, s, 128);],
+ AC_DEFINE(HAVE_STRERROR_R, 1,
+ [Define if strerror_r is available in <string.h>.]),)
+ CFLAGS="$ac_save_CFLAGS"
+
+ dnl Check for two-argument version of strerror_r (e.g. for VxWorks)
+ ac_save_CFLAGS="$CFLAGS"
+ CFLAGS="-Wimplicit-function-declaration -Werror"
+ AC_TRY_COMPILE([#define _GNU_SOURCE 1
+ #include <string.h>
+ #include <locale.h>],
+ [char s[128]; strerror_r(5, s);],
+ AC_DEFINE(HAVE_STRERROR_R_2ARGS, 1,
+ [Define if strerror_r takes two arguments and is available in <string.h>.]),)
+ CFLAGS="$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"
+])
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