From: Andi Kleen <ak@muc.de>
To: akpm@osdl.org, torvalds@osdl.org
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] Use -Wno-pointer-sign for gcc 4.0
Date: 19 Jan 2005 05:55:52 +0100
Date: Wed, 19 Jan 2005 05:55:52 +0100 [thread overview]
Message-ID: <20050119045552.GA77900@muc.de> (raw)
Compiling an allyesconfig kernel straight with a gcc 4.0 snapshot
gives nearly 10k new warnings like:
warning: pointer targets in passing argument 5 of `cpuid' differ in signedness
Since the sheer number of these warnings was too much even for the
most determined kernel janitors (I actually asked ;-) and I don't
think it's a very serious issue to have these mismatches I submitted
an new option to gcc to disable it. It was incorporated in gcc mainline
now.
This patch makes the kernel compilation use it. There are still
quite a lot of new warnings with 4.0 (mostly about uninitialized variables),
but the compile log looks much nicer nnow.
Signed-off-by: Andi Kleen <ak@suse.de>
--- linux-2.6.11-rc1-bk4/Makefile-o 2005-01-17 10:39:39.000000000 +0100
+++ linux-2.6.11-rc1-bk4/Makefile 2005-01-19 05:43:29.000000000 +0100
@@ -533,6 +533,9 @@
# warn about C99 declaration after statement
CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
+# disable pointer signedness warnings in gcc 4.0
+CFLAGS += $(call cc-option,-Wno-pointer-sign,)
+
# Default kernel image to build when no specific target is given.
# KBUILD_IMAGE may be overruled on the commandline or
# set in the environment
reply other threads:[~2005-01-19 4:56 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20050119045552.GA77900@muc.de \
--to=ak@muc.de \
--cc=akpm@osdl.org \
--cc=linux-kernel@vger.kernel.org \
--cc=torvalds@osdl.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).