From 3ad956e73f0b79bca92949faf726768927caba3e Mon Sep 17 00:00:00 2001
From: Yang Tse <yangsita@gmail.com>
Date: Mon, 13 Oct 2008 17:06:06 +0000
Subject: [PATCH] Adjust GCC warnings:
Disable following warnings when cross-compiling with a gcc older
than 3.0, to avoid warnings from third party system headers:
-Wmissing-prototypes
-Wunused
-Wshadow
---
ares/m4/cares-compilers.m4 | 16 ++++++++++++++--
m4/curl-compilers.m4 | 16 ++++++++++++++--
2 files changed, 28 insertions(+), 4 deletions(-)
diff --git a/ares/m4/cares-compilers.m4 b/ares/m4/cares-compilers.m4
index 09fdac8791..d25c664910 100644
--- a/ares/m4/cares-compilers.m4
+++ b/ares/m4/cares-compilers.m4
@@ -750,9 +750,14 @@ AC_DEFUN([CARES_SET_COMPILER_WARNING_OPTS], [
fi
dnl Set of options we believe *ALL* gcc versions support:
tmp_CFLAGS="$tmp_CFLAGS -Wall -W -Winline -Wnested-externs"
- tmp_CFLAGS="$tmp_CFLAGS -Wmissing-prototypes -Wpointer-arith"
- tmp_CFLAGS="$tmp_CFLAGS -Wwrite-strings"
+ tmp_CFLAGS="$tmp_CFLAGS -Wpointer-arith -Wwrite-strings"
dnl -Wcast-align is a bit too annoying on all gcc versions ;-)
+ dnl Do not enable some warnings, when cross-compiling with a gcc
+ dnl older than 3.0, triggered on third party system headers.
+ if test "x$cross_compiling" != "xyes" ||
+ test "$compiler_num" -ge "300"; then
+ tmp_CFLAGS="$tmp_CFLAGS -Wmissing-prototypes"
+ fi
if test "$compiler_num" -ge "207"; then
dnl gcc 2.7 or later
tmp_CFLAGS="$tmp_CFLAGS -Wmissing-declarations"
@@ -790,6 +795,13 @@ AC_DEFUN([CARES_SET_COMPILER_WARNING_OPTS], [
if test "$compiler_num" -ge "300"; then
dnl gcc 3.0 and later
tmp_CFLAGS="$tmp_CFLAGS -Wno-system-headers"
+ else
+ dnl Disable some warnings, when cross-compiling with a gcc
+ dnl older than 3.0, triggered on third party system headers.
+ if test "x$cross_compiling" = "xyes"; then
+ tmp_CFLAGS="$tmp_CFLAGS -Wno-missing-prototypes"
+ tmp_CFLAGS="$tmp_CFLAGS -Wno-unused -Wno-shadow"
+ fi
fi
;;
#
diff --git a/m4/curl-compilers.m4 b/m4/curl-compilers.m4
index d25cba65a7..d7ab28a740 100644
--- a/m4/curl-compilers.m4
+++ b/m4/curl-compilers.m4
@@ -756,9 +756,14 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
fi
dnl Set of options we believe *ALL* gcc versions support:
tmp_CFLAGS="$tmp_CFLAGS -Wall -W -Winline -Wnested-externs"
- tmp_CFLAGS="$tmp_CFLAGS -Wmissing-prototypes -Wpointer-arith"
- tmp_CFLAGS="$tmp_CFLAGS -Wwrite-strings"
+ tmp_CFLAGS="$tmp_CFLAGS -Wpointer-arith -Wwrite-strings"
dnl -Wcast-align is a bit too annoying on all gcc versions ;-)
+ dnl Do not enable some warnings, when cross-compiling with a gcc
+ dnl older than 3.0, triggered on third party system headers.
+ if test "x$cross_compiling" != "xyes" ||
+ test "$compiler_num" -ge "300"; then
+ tmp_CFLAGS="$tmp_CFLAGS -Wmissing-prototypes"
+ fi
if test "$compiler_num" -ge "207"; then
dnl gcc 2.7 or later
tmp_CFLAGS="$tmp_CFLAGS -Wmissing-declarations"
@@ -796,6 +801,13 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
if test "$compiler_num" -ge "300"; then
dnl gcc 3.0 and later
tmp_CFLAGS="$tmp_CFLAGS -Wno-system-headers"
+ else
+ dnl Disable some warnings, when cross-compiling with a gcc
+ dnl older than 3.0, triggered on third party system headers.
+ if test "x$cross_compiling" = "xyes"; then
+ tmp_CFLAGS="$tmp_CFLAGS -Wno-missing-prototypes"
+ tmp_CFLAGS="$tmp_CFLAGS -Wno-unused -Wno-shadow"
+ fi
fi
;;
#
--
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