Re: [PATCH 0/4] Compile kernel with -fwhole-program --combine

Helge Hafting
2006-08-28T10:56:18Z

David Woodhouse wrote:
> On Fri, 2006-08-25 at 16:11 -0400, Rob Landley wrote:
>
>> BusyBox has been doing this for months now: "build at once" is one of our
>> config options. I'd like to point out that gcc eats needs several hundred
>> megabytes of ram to do this and you have no useful progress indicator between
>> starting and ending. But the result is definitely smaller.
>>
>
> It isn't that bad when you're only building a few files at a time -- I
> wouldn't suggest doing it for the whole kernel.
>
I suggest a new makefile target for this.

I.e. "make bzImage" as always for those who do development and
recompile after small changes/patches.

And a "make optImage" (optimized image) when building a
kernel for production use, when you believe compiling every file
and spending lots of extra time is worth it.

Helge Hafting