extend crosstool.sh to allow gcc4 as native compiler?

[Arno Schuring]

>
> Well, that was quick. I figured I could set a gcc in my PATH which did 
> nothing but exit 1 - however 2.6 kernels use HOSTCC instead of CC, which 
> is hardcoded to using gcc. The question is whether we really want 
> everything to circumvent the default gcc. I think this might get really 
> ugly really fast. But nevertheless:
>
> <    yes "" | make ARCH=$ARCH oldconfig
> ===
>>    yes "" | make ARCH=$ARCH oldconfig HOSTCC=${CC:-gcc}
>
> With this change, the kernel headers proceed just fine. Binutils built 
> fine, glibc headers survived. Doing gcc-CORE now.
>

With the attached patch, I was able to use crosstool without referencing 
gcc.

I have (correction: crosstool has) built the following combo's (am trying a 
linux-2.4 right now):

sparc64-unknown-linux-gnu/gcc-3.4.3-glibc-2.3.4
x86_64-unknown-linux-gnu/gcc-3.4.3-glibc-2.3.4

crosstool@golem:~/temp/crosstool-0.30$ gcc --version
===== OUCH =====
/home/golem/crosstool/temp/bin/gcc --version
crosstool@golem:~/temp/crosstool-0.30$ echo $CC
/home/golem/crosstool/tools/bin/gcc
crosstool@golem:~/temp/crosstool-0.30$ $CC --version
gcc (GCC) 3.3.5
Copyright (C) 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


I'm not sure what good purpose the patch serves, considering that crosstool 
already could (did) use $CC as its compiler for the host's binaries. There 
is a reason why the kernel (for example) insists on using gcc instead of 
$CC. But for the curious, this patch allows crosstool to rely on $CC 
entirely. Arguably, this can do more harm than good. But heck, I just felt 
like playing with it. :)

Arno


  np: Spock's Beard - Lay It Down 
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