2017-03-28 10:19 GMT+09:00 Matthias Kaehlcke <[email protected]>: > This generates smaller resulting object code when compiled with clang. > > Signed-off-by: Matthias Kaehlcke <[email protected]> > --- > Makefile | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/Makefile b/Makefile > index b2faa9319372..66bcdbf58371 100644 > --- a/Makefile > +++ b/Makefile > @@ -638,7 +638,8 @@ KBUILD_CFLAGS += $(call cc-option,-fdata-sections,) > endif > > ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE > -KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) > +KBUILD_CFLAGS += $(call cc-option,-Oz,-Os) > +KBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,) > else > ifdef CONFIG_PROFILE_ALL_BRANCHES > KBUILD_CFLAGS += -O2 $(call cc-disable-warning,maybe-uninitialized,) > -- > 2.12.2.564.g063fe858b8-goog >
This is the same as the following commit in LLVMLinux except Author/Signed-off-by. Who should the authorship really belong to? commit 186e62808239c603bfa308d5ea994a10d67bb409 Author: Behan Webster <[email protected]> Date: Thu Oct 16 14:28:54 2014 +0200 LLVMLinux: use -Oz instead of -Os when using clang This generates smaller resulting object code when compiled with clang. Signed-off-by: Behan Webster <[email protected]> -- Best Regards Masahiro Yamada
