-dnl Check:
-dnl * If we have gettimeofday;
-dnl * If we have struct timezone for use in calling it;
-dnl * If calling it with a timezone pointer actually works -- this is deemed
-dnl obsolete or undefined on some systems which say you should use a null
-dnl pointer -- and undefine HAVE_TIMEZONE if so;
-dnl * Whether it only takes one arg.
-AC_DEFUN([LIBGFOR_GETTIMEOFDAY], [
- AC_CHECK_FUNCS(gettimeofday)
- if test "$ac_cv_func_gettimeofday" = yes; then
- AC_CACHE_CHECK([for struct timezone], gfor_cv_struct_timezone,
- [AC_TRY_COMPILE([#include <sys/time.h>],
- [struct timezone tz;],
- gfor_cv_struct_timezone=yes, gfor_cv_struct_timezone=no)])
- if test $gfor_cv_struct_timezone = yes; then
- dnl It may be that we can't call gettimeofday with a non-null pointer.
- dnl In that case we'll lie about struct timezone.
- AC_TRY_RUN([
-#ifdef TIME_WITH_SYS_TIME
-#include <sys/time.h>
-#include <time.h>
-#else
-#ifdef HAVE_SYS_TIME_H
-#include <sys/time.h>
-#else
-#include <time.h>
-#endif
-#endif
-main ()
-{
- struct timeval time;
- struct timezone dummy;
- if (gettimeofday (&time, &dummy))
- exit (1);
- else
- exit (0);
-}],
- [gfor_have_struct_timezone=yes], [gfor_have_struct_timezone=no],
- [gfor_have_struct_timezone=yes])
- if test $gfor_have_struct_timezone = yes; then
- AC_DEFINE(HAVE_TIMEZONE, 1, [Do we have struct timezone])
- fi
- fi
- AC_REQUIRE([AC_HEADER_TIME])
- AC_CACHE_CHECK([whether gettimeofday can accept two arguments],
- emacs_cv_gettimeofday_two_arguments,
- [AC_TRY_LINK([
-#ifdef TIME_WITH_SYS_TIME
-#include <sys/time.h>
-#include <time.h>
-#else
-#ifdef HAVE_SYS_TIME_H
-#include <sys/time.h>
-#else
-#include <time.h>
-#endif
-#endif
- ],
- [
- struct timeval time;
-#ifdef HAVE_TIMEZONE
- struct timezone dummy;
-#define DUMMY &dummy
-#else
-#define DUMMY NULL
-#endif
- gettimeofday (&time, DUMMY);],
- emacs_cv_gettimeofday_two_arguments=yes,
- emacs_cv_gettimeofday_two_arguments=no)])
- if test $emacs_cv_gettimeofday_two_arguments = no; then
- AC_DEFINE(GETTIMEOFDAY_ONE_ARGUMENT, 1,
- [Does gettimeofday take a single argument])
- fi
- fi])
+m4_include(../config/acx.m4)
+m4_include(../config/no-executables.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
AC_CACHE_CHECK([whether the target supports symbol aliases],
have_attribute_alias, [
AC_TRY_LINK([
-#define ULP STR1(__USER_LABEL_PREFIX__)
-#define STR1(x) STR2(x)
-#define STR2(x) #x
void foo(void) { }
-extern void bar(void) __attribute__((alias(ULP "foo")));],
+extern void bar(void) __attribute__((alias("foo")));],
[bar();], have_attribute_alias=yes, have_attribute_alias=no)])
if test $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 __sync_fetch_and_add.
+AC_DEFUN([LIBGFOR_CHECK_SYNC_FETCH_AND_ADD], [
+ AC_CACHE_CHECK([whether the target supports __sync_fetch_and_add],
+ have_sync_fetch_and_add, [
+ AC_TRY_LINK([int foovar = 0;], [
+if (foovar <= 0) return __sync_fetch_and_add (&foovar, 1);
+if (foovar > 10) return __sync_add_and_fetch (&foovar, -1);],
+ have_sync_fetch_and_add=yes, have_sync_fetch_and_add=no)])
+ if test $have_sync_fetch_and_add = yes; then
+ AC_DEFINE(HAVE_SYNC_FETCH_AND_ADD, 1,
+ [Define to 1 if the target supports __sync_fetch_and_add])
+ fi])
+
+dnl Check if threads are supported.
+AC_DEFUN([LIBGFOR_CHECK_GTHR_DEFAULT], [
+ AC_CACHE_CHECK([configured target thread model],
+ target_thread_file, [
+target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`])
+
+ if test $target_thread_file != single; then
+ AC_DEFINE(HAVE_GTHR_DEFAULT, 1,
+ [Define if the compiler has a thread header that is non single.])
+ fi])
+
+dnl Check for pragma weak.
+AC_DEFUN([LIBGFOR_GTHREAD_WEAK], [
+ AC_CACHE_CHECK([whether pragma weak works],
+ have_pragma_weak, [
+ gfor_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Wunknown-pragmas"
+ AC_TRY_COMPILE([void foo (void);
+#pragma weak foo], [if (foo) foo ();],
+ have_pragma_weak=yes, have_pragma_weak=no)])
+ if test $have_pragma_weak = yes; then
+ AC_DEFINE(SUPPORTS_WEAK, 1,
+ [Define to 1 if the target supports #pragma weak])
+ fi
+ case "$host" in
+ *-*-darwin* | *-*-hpux* | *-*-cygwin*)
+ AC_DEFINE(GTHREAD_USE_WEAK, 0,
+ [Define to 0 if the target shouldn't use #pragma weak])
+ ;;
+ esac])
+
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],
if test x"$have_working_stat" = xyes; then
AC_DEFINE(HAVE_WORKING_STAT, 1, [Define if target has a reliable stat.])
fi])
+
+dnl Checks for fpsetmask function.
+AC_DEFUN([LIBGFOR_CHECK_FPSETMASK], [
+ AC_CACHE_CHECK([whether fpsetmask is present], have_fpsetmask, [
+ AC_TRY_LINK([
+#if HAVE_FLOATINGPOINT_H
+# include <floatingpoint.h>
+#endif /* HAVE_FLOATINGPOINT_H */
+#if HAVE_IEEEFP_H
+# include <ieeefp.h>
+#endif /* HAVE_IEEEFP_H */],[fpsetmask(0);],
+ eval "have_fpsetmask=yes", eval "have_fpsetmask=no")
+ ])
+ if test x"$have_fpsetmask" = xyes; then
+ AC_DEFINE(HAVE_FPSETMASK, 1, [Define if you have fpsetmask.])
+ fi
+])
OSDN Git Service
