6f4977fc8e
libgfortran/ChangeLog: * acinclude.m4 (LIBGFOR_CHECK_MATH_IEEE128): New macro. * configure.ac: Use it. * config.h.in: Regenerate. * configure: Regenerate.
536 lines
16 KiB
Plaintext
536 lines
16 KiB
Plaintext
m4_include(../config/acx.m4)
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m4_include(../config/no-executables.m4)
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m4_include(../config/math.m4)
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m4_include(../config/ax_check_define.m4)
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m4_include(../config/enable.m4)
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m4_include(../config/cet.m4)
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dnl Check that we have a working GNU Fortran compiler
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AC_DEFUN([LIBGFOR_WORKING_GFORTRAN], [
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AC_MSG_CHECKING([whether the GNU Fortran compiler is working])
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AC_LANG_PUSH([Fortran])
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AC_COMPILE_IFELSE([[
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program foo
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real, parameter :: bar = sin (12.34 / 2.5)
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end program foo]],
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[AC_MSG_RESULT([yes])],
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[AC_MSG_RESULT([no])
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AC_MSG_ERROR([GNU Fortran is not working; please report a bug in http://gcc.gnu.org/bugzilla, attaching $PWD/config.log])
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])
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AC_LANG_POP([Fortran])
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])
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sinclude(../libtool.m4)
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dnl The lines below arrange for aclocal not to bring an installed
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dnl libtool.m4 into aclocal.m4, while still arranging for automake to
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dnl add a definition of LIBTOOL to Makefile.in.
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ifelse(,,,[AC_SUBST(LIBTOOL)
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AC_DEFUN([AM_PROG_LIBTOOL])
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AC_DEFUN([AC_LIBTOOL_DLOPEN])
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AC_DEFUN([AC_PROG_LD])
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])
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dnl Check whether the target supports hidden visibility.
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AC_DEFUN([LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY], [
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AC_CACHE_CHECK([whether the target supports hidden visibility],
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libgfor_cv_have_attribute_visibility, [
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save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Werror"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[void __attribute__((visibility("hidden"))) foo(void) { }]], [])],
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libgfor_cv_have_attribute_visibility=yes,
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libgfor_cv_have_attribute_visibility=no)
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CFLAGS="$save_CFLAGS"])
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if test $libgfor_cv_have_attribute_visibility = yes; then
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AC_DEFINE(HAVE_ATTRIBUTE_VISIBILITY, 1,
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[Define to 1 if the target supports __attribute__((visibility(...))).])
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fi])
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dnl Check whether the target supports symbol aliases.
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AC_DEFUN([LIBGFOR_CHECK_ATTRIBUTE_ALIAS], [
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AC_CACHE_CHECK([whether the target supports symbol aliases],
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libgfor_cv_have_attribute_alias, [
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[
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void foo(void) { }
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extern void bar(void) __attribute__((alias("foo")));]],
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[[bar();]])], libgfor_cv_have_attribute_alias=yes, libgfor_cv_have_attribute_alias=no)])
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if test $libgfor_cv_have_attribute_alias = yes; then
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AC_DEFINE(HAVE_ATTRIBUTE_ALIAS, 1,
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[Define to 1 if the target supports __attribute__((alias(...))).])
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fi])
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dnl Check whether the target supports __atomic_fetch_add.
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AC_DEFUN([LIBGFOR_CHECK_ATOMIC_FETCH_ADD], [
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AC_CACHE_CHECK([whether the target supports __atomic_fetch_add],
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libgfor_cv_have_atomic_fetch_add, [
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foovar = 0;]], [[
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if (foovar <= 0) return __atomic_fetch_add (&foovar, 1, __ATOMIC_ACQ_REL);
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if (foovar > 10) return __atomic_add_fetch (&foovar, -1, __ATOMIC_ACQ_REL);]])],
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libgfor_cv_have_atomic_fetch_add=yes, libgfor_cv_have_atomic_fetch_add=no)])
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if test $libgfor_cv_have_atomic_fetch_add = yes; then
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AC_DEFINE(HAVE_ATOMIC_FETCH_ADD, 1,
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[Define to 1 if the target supports __atomic_fetch_add])
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fi])
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dnl Check for pragma weak.
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AC_DEFUN([LIBGFOR_GTHREAD_WEAK], [
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AC_CACHE_CHECK([whether pragma weak works],
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libgfor_cv_have_pragma_weak, [
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gfor_save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Wunknown-pragmas"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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void foo (void);
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#pragma weak foo
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]], [[if (foo) foo ();]])],
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libgfor_cv_have_pragma_weak=yes, libgfor_cv_have_pragma_weak=no)])
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if test $libgfor_cv_have_pragma_weak = yes; then
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AC_DEFINE(SUPPORTS_WEAK, 1,
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[Define to 1 if the target supports #pragma weak])
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fi
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case "$host" in
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*-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | *-*-musl* )
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AC_DEFINE(GTHREAD_USE_WEAK, 0,
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[Define to 0 if the target shouldn't use #pragma weak])
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;;
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esac])
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dnl Check whether target effectively supports weakref
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AC_DEFUN([LIBGFOR_CHECK_WEAKREF], [
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AC_CACHE_CHECK([whether the target supports weakref],
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libgfor_cv_have_weakref, [
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save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -Wunknown-pragmas -Werror"
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[
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static int mytoto (int) __attribute__((__weakref__("toto")));
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]], [[return (mytoto != 0);]])],
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libgfor_cv_have_weakref=yes, libgfor_cv_have_weakref=no)
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CFLAGS="$save_CFLAGS"])
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if test $libgfor_cv_have_weakref = yes; then
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AC_DEFINE(SUPPORTS_WEAKREF, 1,
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[Define to 1 if the target supports weakref])
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fi])
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dnl Check whether target can unlink a file still open.
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AC_DEFUN([LIBGFOR_CHECK_UNLINK_OPEN_FILE], [
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AC_CACHE_CHECK([whether the target can unlink an open file],
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libgfor_cv_have_unlink_open_file, [
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AC_RUN_IFELSE([AC_LANG_SOURCE([[
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#include <errno.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/stat.h>
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int main ()
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{
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int fd;
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fd = open ("testfile", O_RDWR | O_CREAT, S_IWUSR | S_IRUSR);
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if (fd <= 0)
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return 0;
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if (unlink ("testfile") == -1)
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return 1;
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write (fd, "This is a test\n", 15);
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close (fd);
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if (open ("testfile", O_RDONLY) == -1 && errno == ENOENT)
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return 0;
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else
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return 1;
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}]])], libgfor_cv_have_unlink_open_file=yes, libgfor_cv_have_unlink_open_file=no, [
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case "${target}" in
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*mingw*) libgfor_cv_have_unlink_open_file=no ;;
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*) libgfor_cv_have_unlink_open_file=yes;;
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esac])])
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if test x"$libgfor_cv_have_unlink_open_file" = xyes; then
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AC_DEFINE(HAVE_UNLINK_OPEN_FILE, 1, [Define if target can unlink open files.])
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fi])
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dnl Check whether CRLF is the line terminator
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AC_DEFUN([LIBGFOR_CHECK_CRLF], [
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AC_CACHE_CHECK([whether the target has CRLF as line terminator],
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libgfor_cv_have_crlf, [
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AC_RUN_IFELSE([AC_LANG_SOURCE([[
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/* This test program should exit with status 0 if system uses a CRLF as
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line terminator, and status 1 otherwise.
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Since it is used to check for mingw systems, and should return 0 in any
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other case, in case of a failure we will not use CRLF. */
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <stdio.h>
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int main ()
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{
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#ifndef O_BINARY
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exit(1);
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#else
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int fd, bytes;
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char buff[5];
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fd = open ("foo", O_WRONLY | O_CREAT | O_TRUNC, S_IRWXU);
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if (fd < 0)
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exit(1);
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if (write (fd, "\n", 1) < 0)
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perror ("write");
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close (fd);
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if ((fd = open ("foo", O_RDONLY | O_BINARY, S_IRWXU)) < 0)
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exit(1);
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bytes = read (fd, buff, 5);
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if (bytes == 2 && buff[0] == '\r' && buff[1] == '\n')
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exit(0);
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else
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exit(1);
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#endif
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}]])], libgfor_cv_have_crlf=yes, libgfor_cv_have_crlf=no, [
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case "${target}" in
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*mingw*) libgfor_cv_have_crlf=yes ;;
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*) libgfor_cv_have_crlf=no;;
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esac])])
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if test x"$libgfor_cv_have_crlf" = xyes; then
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AC_DEFINE(HAVE_CRLF, 1, [Define if CRLF is line terminator.])
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fi])
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dnl Check whether the st_ino and st_dev stat fields taken together uniquely
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dnl identify the file within the system. This is should be true for POSIX
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dnl systems; it is known to be false on mingw32.
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AC_DEFUN([LIBGFOR_CHECK_WORKING_STAT], [
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AC_CACHE_CHECK([whether the target stat is reliable],
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libgfor_cv_have_working_stat, [
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AC_RUN_IFELSE([AC_LANG_SOURCE([[
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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int main ()
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{
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FILE *f, *g;
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struct stat st1, st2;
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f = fopen ("foo", "w");
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g = fopen ("bar", "w");
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if (stat ("foo", &st1) != 0 || stat ("bar", &st2))
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return 1;
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if (st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino)
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return 1;
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fclose(f);
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fclose(g);
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return 0;
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}]])], libgfor_cv_have_working_stat=yes, libgfor_cv_have_working_stat=no, [
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case "${target}" in
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*mingw*) libgfor_cv_have_working_stat=no ;;
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*) libgfor_cv_have_working_stat=yes;;
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esac])])
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if test x"$libgfor_cv_have_working_stat" = xyes; then
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AC_DEFINE(HAVE_WORKING_STAT, 1, [Define if target has a reliable stat.])
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fi])
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dnl Checks for fpsetmask function.
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AC_DEFUN([LIBGFOR_CHECK_FPSETMASK], [
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AC_CACHE_CHECK([whether fpsetmask is present], libgfor_cv_have_fpsetmask, [
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[
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#if HAVE_FLOATINGPOINT_H
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# include <floatingpoint.h>
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#endif /* HAVE_FLOATINGPOINT_H */
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#if HAVE_IEEEFP_H
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# include <ieeefp.h>
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#endif /* HAVE_IEEEFP_H */]],[[fpsetmask(0);]])],
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eval "libgfor_cv_have_fpsetmask=yes", eval "libgfor_cv_have_fpsetmask=no")
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])
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if test x"$libgfor_cv_have_fpsetmask" = xyes; then
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have_fpsetmask=yes
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AC_DEFINE(HAVE_FPSETMASK, 1, [Define if you have fpsetmask.])
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fi
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])
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dnl Check whether we have a mingw that provides a __mingw_snprintf function
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AC_DEFUN([LIBGFOR_CHECK_MINGW_SNPRINTF], [
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AC_CACHE_CHECK([whether __mingw_snprintf is present], libgfor_cv_have_mingw_snprintf, [
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[
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#include <stdio.h>
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extern int __mingw_snprintf (char *, size_t, const char *, ...);
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]],[[
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__mingw_snprintf (NULL, 0, "%d\n", 1);
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]])],
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eval "libgfor_cv_have_mingw_snprintf=yes", eval "libgfor_cv_have_mingw_snprintf=no")
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])
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if test x"$libgfor_cv_have_mingw_snprintf" = xyes; then
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AC_DEFINE(HAVE_MINGW_SNPRINTF, 1, [Define if you have __mingw_snprintf.])
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fi
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])
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dnl Check whether we have a __float128 type
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AC_DEFUN([LIBGFOR_CHECK_FLOAT128], [
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LIBQUADSPEC=
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if test "x$enable_libquadmath_support" != xno; then
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AC_CACHE_CHECK([whether we have a usable __float128 type],
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libgfor_cv_have_float128, [
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GCC_TRY_COMPILE_OR_LINK([
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typedef _Complex float __attribute__((mode(TC))) __complex128;
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__float128 foo (__float128 x)
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{
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__complex128 z1, z2;
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z1 = x;
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z2 = x / 7.Q;
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z2 /= z1;
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return (__float128) z2;
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}
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__float128 bar (__float128 x)
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{
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return x * __builtin_huge_valq ();
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}
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],[
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foo (1.2Q);
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bar (1.2Q);
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],[
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libgfor_cv_have_float128=yes
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],[
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libgfor_cv_have_float128=no
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])])
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if test "x$libgfor_cv_have_float128" = xyes; then
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AC_DEFINE(HAVE_FLOAT128, 1, [Define if have a usable __float128 type.])
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dnl Check whether -Wl,--as-needed resp. -Wl,-zignore is supported
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dnl
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dnl Turn warnings into error to avoid testsuite breakage. So enable
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dnl AC_LANG_WERROR, but there's currently (autoconf 2.64) no way to turn
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dnl it off again. As a workaround, save and restore werror flag like
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dnl AC_PATH_XTRA.
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dnl Cf. http://gcc.gnu.org/ml/gcc-patches/2010-05/msg01889.html
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ac_xsave_[]_AC_LANG_ABBREV[]_werror_flag=$ac_[]_AC_LANG_ABBREV[]_werror_flag
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AC_CACHE_CHECK([whether --as-needed/-z ignore works],
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[libgfor_cv_have_as_needed],
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[
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# Test for native Solaris options first.
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# No whitespace after -z to pass it through -Wl.
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libgfor_cv_as_needed_option="-zignore"
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libgfor_cv_no_as_needed_option="-zrecord"
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save_LDFLAGS="$LDFLAGS"
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LDFLAGS="$LDFLAGS -Wl,$libgfor_cv_as_needed_option -lm -Wl,$libgfor_cv_no_as_needed_option"
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libgfor_cv_have_as_needed=no
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AC_LANG_WERROR
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AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
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[libgfor_cv_have_as_needed=yes],
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[libgfor_cv_have_as_needed=no])
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LDFLAGS="$save_LDFLAGS"
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if test "x$libgfor_cv_have_as_needed" = xno; then
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libgfor_cv_as_needed_option="--as-needed"
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libgfor_cv_no_as_needed_option="--no-as-needed"
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save_LDFLAGS="$LDFLAGS"
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LDFLAGS="$LDFLAGS -Wl,$libgfor_cv_as_needed_option -lm -Wl,$libgfor_cv_no_as_needed_option"
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libgfor_cv_have_as_needed=no
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AC_LANG_WERROR
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AC_LINK_IFELSE([AC_LANG_PROGRAM([])],
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[libgfor_cv_have_as_needed=yes],
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[libgfor_cv_have_as_needed=no])
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LDFLAGS="$save_LDFLAGS"
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fi
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ac_[]_AC_LANG_ABBREV[]_werror_flag=$ac_xsave_[]_AC_LANG_ABBREV[]_werror_flag
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])
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dnl For static libgfortran linkage, depend on libquadmath only if needed.
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if test "x$libgfor_cv_have_as_needed" = xyes; then
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LIBQUADSPEC="%{static-libgfortran:$libgfor_cv_as_needed_option} -lquadmath %{static-libgfortran:$libgfor_cv_no_as_needed_option}"
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else
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LIBQUADSPEC="-lquadmath"
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fi
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if test -f ../libquadmath/libquadmath.la; then
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LIBQUADLIB=../libquadmath/libquadmath.la
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LIBQUADLIB_DEP=../libquadmath/libquadmath.la
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LIBQUADINCLUDE='-I$(srcdir)/../libquadmath'
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else
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LIBQUADLIB="-lquadmath"
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LIBQUADLIB_DEP=
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LIBQUADINCLUDE=
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fi
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fi
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else
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# for --disable-quadmath
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LIBQUADLIB=
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LIBQUADLIB_DEP=
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LIBQUADINCLUDE=
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fi
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dnl For the spec file
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AC_SUBST(LIBQUADSPEC)
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AC_SUBST(LIBQUADLIB)
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AC_SUBST(LIBQUADLIB_DEP)
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AC_SUBST(LIBQUADINCLUDE)
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dnl We need a conditional for the Makefile
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AM_CONDITIONAL(LIBGFOR_BUILD_QUAD, [test "x$libgfor_cv_have_float128" = xyes])
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])
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dnl Check whether we have strerror_r
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AC_DEFUN([LIBGFOR_CHECK_STRERROR_R], [
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dnl Check for three-argument POSIX version of strerror_r
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ac_save_CFLAGS="$CFLAGS"
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CFLAGS="-Wimplicit-function-declaration -Werror"
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AC_TRY_COMPILE([#define _GNU_SOURCE 1
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#include <string.h>
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#include <locale.h>],
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[char s[128]; strerror_r(5, s, 128);],
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AC_DEFINE(HAVE_STRERROR_R, 1,
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[Define if strerror_r is available in <string.h>.]),)
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CFLAGS="$ac_save_CFLAGS"
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dnl Check for two-argument version of strerror_r (e.g. for VxWorks)
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ac_save_CFLAGS="$CFLAGS"
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CFLAGS="-Wimplicit-function-declaration -Werror"
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AC_TRY_COMPILE([#define _GNU_SOURCE 1
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#include <string.h>
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#include <locale.h>],
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[char s[128]; strerror_r(5, s);],
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AC_DEFINE(HAVE_STRERROR_R_2ARGS, 1,
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[Define if strerror_r takes two arguments and is available in <string.h>.]),)
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CFLAGS="$ac_save_CFLAGS"
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])
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dnl Check for AVX
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AC_DEFUN([LIBGFOR_CHECK_AVX], [
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ac_save_CFLAGS="$CFLAGS"
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CFLAGS="-O2 -mavx"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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void _mm256_zeroall (void)
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{
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__builtin_ia32_vzeroall ();
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}]], [[]])],
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AC_DEFINE(HAVE_AVX, 1,
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[Define if AVX instructions can be compiled.]),
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[])
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CFLAGS="$ac_save_CFLAGS"
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])
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dnl Check for AVX2
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AC_DEFUN([LIBGFOR_CHECK_AVX2], [
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ac_save_CFLAGS="$CFLAGS"
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CFLAGS="-O2 -mavx2"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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typedef long long __v4di __attribute__ ((__vector_size__ (32)));
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__v4di
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mm256_is32_andnotsi256 (__v4di __X, __v4di __Y)
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{
|
|
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
|
|
])
|