diff options
| author | Borislav Petkov <bp@alien8.de> | 2011-03-01 09:35:29 +0100 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2012-08-17 15:35:53 -0400 |
| commit | 0d34797e902e198b671075368d2280add20b518a (patch) | |
| tree | 87bdf0a3ccb853ed2fafdc08ccee6bb744eb5156 /Documentation | |
| parent | 2ccd3d16c41e5b6226f24bb168298f18b90c5415 (diff) | |
kbuild: Add extra gcc checks
commit 4a5838ad9d2d4f7354a310982483f4c76aa0abeb upstream.
Add a 'W=1' Makefile switch which adds additional checking per build
object.
The idea behind this option is targeted at developers who, in the
process of writing their code, want to do the occasional
make W=1 [target.o]
and let gcc do more extensive code checking for them. Then, they
could eyeball the output for valid gcc warnings about various
bugs/discrepancies which are not reported during the normal build
process.
For more background information and a use case, read through this
thread: http://marc.info/?l=kernel-janitors&m=129802065918147&w=2
Cc: Michal Marek <mmarek@suse.cz>
Cc: linux-kbuild@vger.kernel.org
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Michal Marek <mmarek@suse.cz>
[PG: used for 2.6.34 to better control new compilers on older code]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/kbuild/kbuild.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/kbuild/kbuild.txt b/Documentation/kbuild/kbuild.txt index 6f8c1cabbc5d..6c35f63fde73 100644 --- a/Documentation/kbuild/kbuild.txt +++ b/Documentation/kbuild/kbuild.txt @@ -162,3 +162,8 @@ For tags/TAGS/cscope targets, you can specify more than one arch to be included in the databases, separated by blank space. E.g.: $ make ALLSOURCE_ARCHS="x86 mips arm" tags + +KBUILD_ENABLE_EXTRA_GCC_CHECKS +-------------------------------------------------- +If enabled over the make command line with "W=1", it turns on additional +gcc -W... options for more extensive build-time checking. |