From 1b3471ed0cf1f1ec2cdc8a116b1da93f783a47c6 Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Thu, 9 Jun 2005 07:51:58 +0000
Subject: r7425: configure check to see if a compiler can handle negative enum
 values if the compiler doesn't support it we pass --uint-enums to pidl

metze
(This used to be commit c52703c0a8adb4f64ec52e4bf602e9c17ef2c748)
---
 source4/build/m4/check_cc.m4 | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'source4/build/m4/check_cc.m4')

diff --git a/source4/build/m4/check_cc.m4 b/source4/build/m4/check_cc.m4
index 68e938b794..947112f4b6 100644
--- a/source4/build/m4/check_cc.m4
+++ b/source4/build/m4/check_cc.m4
@@ -67,6 +67,20 @@ if test x"$samba_cv_immediate_structures" = x"yes"; then
    AC_DEFINE(HAVE_IMMEDIATE_STRUCTURES,1,[Whether the compiler supports immediate structures])
 fi
 
+############################################
+# check if the compiler can handle negative enum values
+AC_CACHE_CHECK([that the C compiler understands negative enum values],SMB_BUILD_CC_NEGATIVE_ENUM_VALUES, [
+    AC_TRY_COMPILE([
+#include <stdio.h>],
+[
+	enum negative_values { NEGATIVE_VALUE = 0xFFFFFFFF };
+],
+	SMB_BUILD_CC_NEGATIVE_ENUM_VALUES=yes,SMB_BUILD_CC_NEGATIVE_ENUM_VALUES=no)])
+if test x"$SMB_BUILD_CC_NEGATIVE_ENUM_VALUES" != x"yes"; then
+	AC_MSG_WARN([using --unit-enums for pidl])
+	PIDL_ARGS="$PIDL_ARGS --uint-enums"
+fi
+
 AC_MSG_CHECKING([for test routines])
 AC_TRY_RUN([#include "${srcdir-.}/build/tests/trivial.c"],
 	    AC_MSG_RESULT(yes),
-- 
cgit