PATCH][RFC][resend] CC_OPTIMIZE_FOR_SIZE should default to N
From: Jesper Juhl
Date: Mon Mar 21 2011 - 16:08:41 EST
I believe that the majority of systems we are built on want a -O2 compiled
kernel. Optimizing for size (-Os) is mainly benneficial for embedded
systems and systems with very small CPU caches (correct me if I'm wrong).
So it seems wrong to me that CC_OPTIMIZE_FOR_SIZE defaults to 'y' and
recommends saying 'Y' if unsure. I believe it should default to 'n' and
recommend that if unsure. People who bennefit from -Os know who they are
and can enable the option if needed/wanted - the majority shouldn't
select this. Right?
Signed-off-by: Jesper Juhl <jj@xxxxxxxxxxxxx>
Kconfig | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/init/Kconfig b/init/Kconfig
index 56240e7..0d63dfa 100644
@@ -903,12 +903,12 @@ endif
bool "Optimize for size"
- default y
+ default n
Enabling this option will pass "-Os" instead of "-O2" to gcc
resulting in a smaller kernel.
- If unsure, say Y.
+ If unsure, say N.
Jesper Juhl <jj@xxxxxxxxxxxxx> http://www.chaosbits.net/
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