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SubjectRe: [2.6 patch] add a config option for -Os compilation
On Thu, Sep 25, 2003 at 04:38:45PM +0200, Adrian Bunk wrote:
> --- linux-2.6.0-test5-mm4/init/Kconfig.old 2003-09-25 14:38:18.000000000 +0200
> +++ linux-2.6.0-test5-mm4/init/Kconfig 2003-09-25 14:47:12.000000000 +0200
> @@ -65,6 +65,16 @@
>
> menu "General setup"
>
> +config OPTIMIZE_FOR_SIZE
> + bool "Optimize for size" if EXPERIMENTAL
> + default y if ARM || H8300
> + default n
> + help
> + Enabling this option will pass "-Os" instead of "-O2" to gcc
> + resulting in a smaller kernel.
> +
> + If unsure, say N.
> +

This is a general file, and it is wrong to include architecture specific
knowledge here.
I recall that Roman Zippel introduced "enable" for exactly this purpose.

I looked into Documentation/kbuild/kconfig-language.txt but did not
see it documented - Roman?

Another comment about the naming of the config symbol.
We keep getting more config symbols controlling options to GCC.
A naming scheme like: CONFIG_CC_OPTIMIZE_FOR_SIZE, CONFIG_CC_DEBUG_INFO
is preferable since it give better context information.
Let's start with this option, and rename the others later.

Sam
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