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On 01.01.2015 19:36, Daniel Eischen wrote:
>> I'm trying to update arm-eabi (microcontroller) cross-gcc port
>> to latest version 4.9 and have one weird problem.
>>
>> Some part of gcc for arm (neon coprocessor machine description,
>> to be precise) requires more than 256 nested parenthesis in
>> version 4.9 (4.8 doesn't have this problem). Due to this
>> parenthesis madness clang needs "-fbracket-depth=1024" option. If
>> I add this option to CFLAGS in environment variable, I have other
>> problem. Later in build process gcc uses newly-built gcc (xgcc)
>> to build library. And this gcc picks up "-fbracket-depth=1024"
>> from environment and fails due to unknown option!
>>
>> How could I provide options only for clang but not for gcc?
>
> Hmm, I found CFLAGS.clang (or rather CFLAGS.${COMPILER_TYPE}) in
> /usr/share/mk/, so you might try setting that instead of just
> CFLAGS. Just a guess...
It works only in out build system (bsd.*.mk), by copying this to
CFLAGS if compiler is clang. It will not work for "any" project :(
- --
// Lev Serebryakov AKA Black Lion
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