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| author | Arnd Bergmann <arnd@arndb.de> | 2016-04-25 17:35:27 +0200 |
|---|---|---|
| committer | Michal Marek <mmarek@suse.com> | 2016-05-10 17:12:48 +0200 |
| commit | 877417e6ffb9578e8580abf76a71e15732473456 (patch) | |
| tree | 607b51ebf3c00b83f5c89777e7cfd0f46349605a /Makefile | |
| parent | kbuild: forbid kernel directory to contain spaces and colons (diff) | |
| download | linux-877417e6ffb9578e8580abf76a71e15732473456.tar.xz linux-877417e6ffb9578e8580abf76a71e15732473456.zip | |
Kbuild: change CC_OPTIMIZE_FOR_SIZE definition
CC_OPTIMIZE_FOR_SIZE disables the often useful -Wmaybe-unused warning,
because that causes a ridiculous amount of false positives when combined
with -Os.
This means a lot of warnings don't show up in testing by the developers
that should see them with an 'allmodconfig' kernel that has
CC_OPTIMIZE_FOR_SIZE enabled, but only later in randconfig builds
that don't.
This changes the Kconfig logic around CC_OPTIMIZE_FOR_SIZE to make
it a 'choice' statement defaulting to CC_OPTIMIZE_FOR_PERFORMANCE
that gets added for this purpose. The allmodconfig and allyesconfig
kernels now default to -O2 with the maybe-unused warning enabled.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Marek <mmarek@suse.com>
Diffstat (limited to 'Makefile')
0 files changed, 0 insertions, 0 deletions