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| author | Sam Ravnborg <sam@ravnborg.org> | 2011-04-27 22:15:27 +0200 |
|---|---|---|
| committer | Michal Marek <mmarek@suse.cz> | 2011-04-28 17:59:07 +0200 |
| commit | 28bc20dccadc610c56e27255aeef2938141a0cd3 (patch) | |
| tree | dfaf1a2b593a25cabffe8a83e5aaf34b3c2c166d /Makefile | |
| parent | 40df759e2b9ec945f1a5ddc61b3fdfbb6583257e (diff) | |
| download | kernel_samsung_smdk4412-28bc20dccadc610c56e27255aeef2938141a0cd3.zip kernel_samsung_smdk4412-28bc20dccadc610c56e27255aeef2938141a0cd3.tar.gz kernel_samsung_smdk4412-28bc20dccadc610c56e27255aeef2938141a0cd3.tar.bz2 | |
kbuild: implement several W= levels
Building a kernel with "make W=1" produces far too much noise to be
useful.
Divide the warning options in three groups:
W=1 - warnings that may be relevant and does not occur too often
W=2 - warnings that occur quite often but may still be relevant
W=3 - the more obscure warnings, can most likely be ignored
When building the whole kernel, those levels produce:
W=1 - 4859 warnings
W=2 - 1394 warnings
W=3 - 86666 warnings
respectively. Warnings have been counted with Geert's script at
http://www.kernel.org/pub/linux/kernel/people/geert/linux-log/linux-log-summary.pl
Many warnings occur from .h files so fixing one file may have a nice
effect on the total number of warnings.
With these changes I am actually tempted to try W=1 now and then.
Previously there was just too much noise.
Borislav:
- make the W= levels exclusive
- move very noisy and making little sense for the kernel warnings to W=3
- drop -Woverlength-strings due to useless warning message
- copy explanatory text for the different warning levels to 'make help'
- recount warnings per level
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Borislav Petkov <bp@alien8.de>
Cc: Dave Jones <davej@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 8 |
1 files changed, 6 insertions, 2 deletions
@@ -103,7 +103,7 @@ ifeq ("$(origin O)", "command line") endif ifeq ("$(origin W)", "command line") - export KBUILD_ENABLE_EXTRA_GCC_CHECKS := 1 + export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W) endif # That's our default target when none is given on the command line @@ -1274,7 +1274,11 @@ help: @echo ' make O=dir [targets] Locate all output files in "dir", including .config' @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' @echo ' make C=2 [targets] Force check of all c source with $$CHECK' - @echo ' make W=1 [targets] Enable extra gcc checks' + @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' + @echo ' 1: warnings which may be relevant and do not occur too often' + @echo ' 2: warnings which occur quite often but may still be relevant' + @echo ' 3: more obscure warnings, can most likely be ignored' + @echo '' @echo 'Execute "make" or "make all" to build all targets marked with [*] ' @echo 'For further info see the ./README file' |