set gcc_dir_version

[platform/upstream/gcc48.git] / libgfortran / acinclude.m4

diff --git a/libgfortran/acinclude.m4 b/libgfortran/acinclude.m4
index 645b248..35698ec 100644 (file)
--- a/libgfortran/acinclude.m4
+++ b/libgfortran/acinclude.m4
@@ -1,5 +1,6 @@
 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], [
@@ -99,7 +100,7 @@ void foo (void);
              [Define to 1 if the target supports #pragma weak])
   fi
   case "$host" in
-    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | alpha*-dec-osf* )
+    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* )
       AC_DEFINE(GTHREAD_USE_WEAK, 0,
                [Define to 0 if the target shouldn't use #pragma weak])
       ;;
@@ -256,18 +257,6 @@ __mingw_snprintf (NULL, 0, "%d\n", 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=
@@ -361,3 +350,29 @@ AC_DEFUN([LIBGFOR_CHECK_FLOAT128], [
   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"
+])