From 810775bb203c3a7f1cac0e71f33be69e0556f674 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 27 Sep 2009 01:21:18 +0000
Subject: [PATCH] * configure.in (warnflags): check all flags if each are
 available.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25116 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog    | 4 ++++
 configure.in | 4 ++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 84e3a587a2..5061810588 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun Sep 27 10:21:16 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* configure.in (warnflags): check all flags if each are available.
+
 Sun Sep 27 05:35:17 2009  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* ext/json/ext/generator/generator.c: Documention patch by okkez.
diff --git a/configure.in b/configure.in
index 4fe7e3248c..1fad64cfb4 100644
--- a/configure.in
+++ b/configure.in
@@ -380,7 +380,8 @@ dnl compiler section {
 
 if test "$GCC:${warnflags+set}:no" = yes::no; then
     save_CFLAGS="$CFLAGS"
-    for wflag in -Wno-missing-field-initializers -Wshorten-64-to-32; do
+    for wflag in -Wall -Wno-unused-parameter -Wno-parentheses -Wpointer-arith -Wwrite-strings \
+		 -Wno-missing-field-initializers -Wshorten-64-to-32; do
         CFLAGS="$CFLAGS $wflag"
         AC_MSG_CHECKING([whether $wflag is accepted])
         AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
@@ -390,7 +391,6 @@ if test "$GCC:${warnflags+set}:no" = yes::no; then
     done
     CFLAGS="$save_CFLAGS"
     unset save_CFLAGS
-    warnflags="-Wall -Wno-unused-parameter -Wno-parentheses ${warnflags+$warnflags }-Wpointer-arith -Wwrite-strings"
 fi
 
 test -z "${ac_env_CFLAGS_set}" -a -n "${cflags+set}" && eval CFLAGS="\"$cflags $ARCH_FLAG\""