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gcc/libgfortran/acinclude.m4
Jakub Jelinek 5097cdf9b8 libgfortran: Switch some more __float128 uses to _Float128 
My patch apparently left some __float128 uses in libgfortran
that could use _Float128 instead, the following patch changes that.

2022-06-29  Jakub Jelinek  <jakub@redhat.com>

	* mk-kinds-h.sh: Change __float128 to _Float128 in a comment.
	* acinclude.m4 (LIBGFOR_CHECK_MATH_IEEE128): Use _Float128 instead of
	__float128.
	* libgfortran.h (isnan): Change __float128 to _Float128 in a comment.
	(__acoshieee128, __acosieee128, __asinhieee128, __asinieee128,
	__atan2ieee128, __atanhieee128, __atanieee128, __copysignieee128,
	__coshieee128, __cosieee128, __erfcieee128, __erfieee128,
	__expieee128, __fabsieee128, __fmaieee128, __fmodieee128, __jnieee128,
	__log10ieee128, __logieee128, __powieee128, __sinhieee128,
	__sinieee128, __sqrtieee128, __tanhieee128, __tanieee128,
	__ynieee128, __strtoieee128): Use _Float128 instead of __float128.
	* configure: Regenerated.
2022-06-29 17:06:02 +02:00

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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 $libgfor_cv_have_weakref = yes; then
AC_DEFINE(SUPPORTS_WEAKREF, 1,
[Define to 1 if the target supports weakref])
fi])
dnl Check whether target can unlink a file still open.
AC_DEFUN([LIBGFOR_CHECK_UNLINK_OPEN_FILE], [
AC_CACHE_CHECK([whether the target can unlink an open file],
libgfor_cv_have_unlink_open_file, [
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
int main ()
{
int fd;
fd = open ("testfile", O_RDWR | O_CREAT, S_IWUSR | S_IRUSR);
if (fd <= 0)
return 0;
if (unlink ("testfile") == -1)
return 1;
write (fd, "This is a test\n", 15);
close (fd);
if (open ("testfile", O_RDONLY) == -1 && errno == ENOENT)
return 0;
else
return 1;
}]])], libgfor_cv_have_unlink_open_file=yes, libgfor_cv_have_unlink_open_file=no, [
case "${target}" in
*mingw*) libgfor_cv_have_unlink_open_file=no ;;
*) libgfor_cv_have_unlink_open_file=yes;;
esac])])
if test x"$libgfor_cv_have_unlink_open_file" = xyes; then
AC_DEFINE(HAVE_UNLINK_OPEN_FILE, 1, [Define if target can unlink open files.])
fi])
dnl Check whether CRLF is the line terminator
AC_DEFUN([LIBGFOR_CHECK_CRLF], [
AC_CACHE_CHECK([whether the target has CRLF as line terminator],
libgfor_cv_have_crlf, [
AC_RUN_IFELSE([AC_LANG_SOURCE([[
/* This test program should exit with status 0 if system uses a CRLF as
line terminator, and status 1 otherwise.
Since it is used to check for mingw systems, and should return 0 in any
other case, in case of a failure we will not use CRLF. */
#include <sys/stat.h>
#include <stdlib.h>
#include <fcntl.h>
#include <stdio.h>
int main ()
{
#ifndef O_BINARY
exit(1);
#else
int fd, bytes;
char buff[5];
fd = open ("foo", O_WRONLY | O_CREAT | O_TRUNC, S_IRWXU);
if (fd < 0)
exit(1);
if (write (fd, "\n", 1) < 0)
perror ("write");
close (fd);
if ((fd = open ("foo", O_RDONLY | O_BINARY, S_IRWXU)) < 0)
exit(1);
bytes = read (fd, buff, 5);
if (bytes == 2 && buff[0] == '\r' && buff[1] == '\n')
exit(0);
else
exit(1);
#endif
}]])], libgfor_cv_have_crlf=yes, libgfor_cv_have_crlf=no, [
case "${target}" in
*mingw*) libgfor_cv_have_crlf=yes ;;
*) libgfor_cv_have_crlf=no;;
esac])])
if test x"$libgfor_cv_have_crlf" = xyes; then
AC_DEFINE(HAVE_CRLF, 1, [Define if CRLF is line terminator.])
fi])
dnl Check whether the st_ino and st_dev stat fields taken together uniquely
dnl identify the file within the system. This is should be true for POSIX
dnl systems; it is known to be false on mingw32.
AC_DEFUN([LIBGFOR_CHECK_WORKING_STAT], [
AC_CACHE_CHECK([whether the target stat is reliable],
libgfor_cv_have_working_stat, [
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
int main ()
{
FILE *f, *g;
struct stat st1, st2;
f = fopen ("foo", "w");
g = fopen ("bar", "w");
if (stat ("foo", &st1) != 0 || stat ("bar", &st2))
return 1;
if (st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino)
return 1;
fclose(f);
fclose(g);
return 0;
}]])], libgfor_cv_have_working_stat=yes, libgfor_cv_have_working_stat=no, [
case "${target}" in
*mingw*) libgfor_cv_have_working_stat=no ;;
*) libgfor_cv_have_working_stat=yes;;
esac])])
if test x"$libgfor_cv_have_working_stat" = xyes; then
AC_DEFINE(HAVE_WORKING_STAT, 1, [Define if target has a reliable stat.])
fi])
dnl Checks for fpsetmask function.
AC_DEFUN([LIBGFOR_CHECK_FPSETMASK], [
AC_CACHE_CHECK([whether fpsetmask is present], libgfor_cv_have_fpsetmask, [
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#if HAVE_FLOATINGPOINT_H
# include <floatingpoint.h>
#endif /* HAVE_FLOATINGPOINT_H */
#if HAVE_IEEEFP_H
# include <ieeefp.h>
#endif /* HAVE_IEEEFP_H */]],[[fpsetmask(0);]])],
eval "libgfor_cv_have_fpsetmask=yes", eval "libgfor_cv_have_fpsetmask=no")
])
if test x"$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 <stdio.h>
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 <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"
])
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
])
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