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-rw-r--r--source4/lib/replace/libreplace_cc.m427
1 files changed, 27 insertions, 0 deletions
diff --git a/source4/lib/replace/libreplace_cc.m4 b/source4/lib/replace/libreplace_cc.m4
index aa0465983a..352d115547 100644
--- a/source4/lib/replace/libreplace_cc.m4
+++ b/source4/lib/replace/libreplace_cc.m4
@@ -28,7 +28,13 @@ ac_cv_prog_cc_Ae=no
savedCFLAGS=$CFLAGS
AC_PROG_CC
CFLAGS=$savedCFLAGS
+
+dnl don't try for C99 if we are using gcc, as otherwise we
+dnl lose immediate structure constants
+if test x"$GCC" = x"no" ; then
AC_PROG_CC_C99
+fi
+
if test x"$GCC" = x"yes" ; then
AC_MSG_CHECKING([for version of gcc])
GCC_VERSION=`$CC -dumpversion`
@@ -122,5 +128,26 @@ if test $ac_cv_sizeof_long_long -lt 8;then
AC_MSG_ERROR([LIBREPLACE needs sizeof(long long) >= 8])
fi
+############################################
+# check if the compiler can do immediate structures
+AC_CACHE_CHECK([for immediate structures],samba_cv_immediate_structures, [
+ AC_TRY_COMPILE([
+#include <stdio.h>],
+[
+ typedef struct {unsigned x;} FOOBAR;
+ #define X_FOOBAR(x) ((FOOBAR) { x })
+ #define FOO_ONE X_FOOBAR(1)
+ FOOBAR f = FOO_ONE;
+ static const struct {
+ FOOBAR y;
+ } f2[] = {
+ {FOO_ONE}
+ };
+],
+ samba_cv_immediate_structures=yes,samba_cv_immediate_structures=no)])
+if test x"$samba_cv_immediate_structures" = x"yes"; then
+ AC_DEFINE(HAVE_IMMEDIATE_STRUCTURES,1,[Whether the compiler supports immediate structures])
+fi
+
AC__LIBREPLACE_ONLY_CC_CHECKS_END
]) dnl end AC_LIBREPLACE_CC_CHECKS