m4_include(../config/acx.m4)
m4_include(../config/no-executables.m4)
+m4_include(../config/math.m4)
dnl Check that we have a working GNU Fortran compiler
AC_DEFUN([LIBGFOR_WORKING_GFORTRAN], [
[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 $libgfor_cv_target_thread_file != single; then
- AC_DEFINE(HAVE_GTHR_DEFAULT, 1,
- [Define if the compiler has a thread header that is non single.])
- fi])
-
dnl Check for pragma weak.
AC_DEFUN([LIBGFOR_GTHREAD_WEAK], [
AC_CACHE_CHECK([whether pragma weak works],
[Define to 1 if the target supports #pragma weak])
fi
case "$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])
;;
{
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"
+])
projects / gcc.git / blobdiff