From: Yang Tse <yangsita@gmail.com>
Date: Tue, 26 Jun 2012 19:22:35 +0000 (+0200)
Subject: cares-compilers.m4: -Wstrict-aliasing=3 for warning enabled gcc and clang builds
X-Git-Tag: upstream/1.10.0~89
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bc0c3c62cc4c4899101fc50fb559470a9edaaa00;p=platform%2Fupstream%2Fc-ares.git

cares-compilers.m4: -Wstrict-aliasing=3 for warning enabled gcc and clang builds
---

diff --git a/m4/cares-compilers.m4 b/m4/cares-compilers.m4
index 7ee8e0d..d564792 100644
--- a/m4/cares-compilers.m4
+++ b/m4/cares-compilers.m4
@@ -15,7 +15,7 @@
 #***************************************************************************
 
 # File version for 'aclocal' use. Keep it a single number.
-# serial 70
+# serial 71
 
 
 dnl CARES_CHECK_COMPILER
@@ -870,6 +870,7 @@ AC_DEFUN([CARES_SET_COMPILER_WARNING_OPTS], [
           tmp_CFLAGS="$tmp_CFLAGS -Wcast-align"
           tmp_CFLAGS="$tmp_CFLAGS -Wno-system-headers"
           tmp_CFLAGS="$tmp_CFLAGS -Wshorten-64-to-32"
+          tmp_CFLAGS="$tmp_CFLAGS -Wstrict-aliasing=3"
           #
           dnl Only clang 1.1 or later
           if test "$compiler_num" -ge "101"; then
@@ -960,6 +961,11 @@ AC_DEFUN([CARES_SET_COMPILER_WARNING_OPTS], [
             tmp_CFLAGS="$tmp_CFLAGS -Wdeclaration-after-statement"
           fi
           #
+          dnl Only gcc 4.0 or later
+          if test "$compiler_num" -ge "400"; then
+            tmp_CFLAGS="$tmp_CFLAGS -Wstrict-aliasing=3"
+          fi
+          #
           dnl Only gcc 4.2 or later
           if test "$compiler_num" -ge "402"; then
             tmp_CFLAGS="$tmp_CFLAGS -Wcast-align"