[PATCH 2/13] musl libc config

[Jeff Law]

On 04/27/2015 08:30 AM, Szabolcs Nagy wrote:
>
> On 22/04/15 16:42, Szabolcs Nagy wrote:
>> yes, i didn't realize that this depends on the target specific parts
>>
>> i will prepare an updated patch that works if the target has no musl
>> dynamic linker name defined
>>
>
> Updated the patch, this time I tested it separately.
> (The test revealed that -mmusl was not wired up properly
> in linux.opt through the "Negative" directive, now fixed).
>
> A default dynamic linker name is defined for musl: "/dev/null".
> (The arch specific headers have to be updated to undef the
> MUSL_DYNAMIC_LINKER* macros).
> (Other options were considered such as print an error with %e,
> but then the user cannot override it with -Wl,-dynamic-linker)
>
> The other parts of the patch (config, include path reordering)
> are not changed.
>
> gcc/Changelog
>
> 2015-04-27  Gregor Richards  <gregor.richards@uwaterloo.ca>
> 	    Szabolcs Nagy  <szabolcs.nagy@arm.com>
>
> 	* config.gcc (LIBC_MUSL): New tm_defines macro.
> 	* config/linux.h (OPTION_MUSL): Define.
> 	(MUSL_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER32,)
> 	(MUSL_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKERX32,)
> 	(INCLUDE_DEFAULTS_MUSL_GPP, INCLUDE_DEFAULTS_MUSL_LOCAL,)
> 	(INCLUDE_DEFAULTS_MUSL_PREFIX, INCLUDE_DEFAULTS_MUSL_CROSS,)
> 	(INCLUDE_DEFAULTS_MUSL_TOOL, INCLUDE_DEFAULTS_MUSL_NATIVE): Define.
>
> 	* config/linux.opt (mmusl): New option.
> 	* configure.ac (gcc_cv_libc_provides_ssp): Add *-*-musl*.
> 	(gcc_cv_target_dl_iterate_phdr): Add *-linux-musl*.
>
> 	* configure: Regenerate.
Still OK :-)

I'm going to leave review of the target config changes to the target 
maintainers.

jeff