[Buildroot] [PATCH v3] Disable o32 ABI for MIPS64 architectures

[Joshua Kinard <kumba@gentoo.org>]

On 03/27/2014 05:56, Vicente Olivert Riera wrote:
> On 03/26/2014 09:28 PM, Peter Korsgaard wrote:
>>>>>>> "Vicente" == Vicente Olivert Riera <Vincent.Riera@imgtec.com> writes:
>>
>> Hi,
>>
>>   >>> +config BR2_MIPS_OABI32
>>   >>> +    bool
>>   >>> +    default y        if BR2_mips || BR2_mipsel
>>   >>> +    default n        if BR2_mips64 || BR2_mips64el
>>   >>
>>   >> Did you forget to remove this or is there a reason to keep it? In the
>>   >> latter case, please add an explanatory comment.
>>
>>   > Why would I want to remove this? The BR2_MIPS_OABI32 symbol is used by
>>   > glibc and uclibc packages.
>>
>> Arnout is just asking about the 'default n' line. Symbols are 'n' by
>> default, so the line doesn't do anything as far as I can see.
>>
> 
> I have maintained that line because if you remove it and then select any
> MIPS64 target, the "# BR2_MIPS_OABI32 is not set" is not present on the
> .config file.
> 
> Isn't that a problem?

Is the definition of BR2_MIPS_OABI32 missing completely, or do you see
"BR2_MIPS_OABI32=y"?  If it's missing completely, then it's virtually the
same as it being there as a comment, which will get stripped out/ignored by
the build system.  Kconfig/Kbuild (whatever it is called) only cares if the
symbol is defined to "y".  I believe that is then checked for in Makefiles
and is in a generated config.h file for use as a C #define.

That's how it works in the Linux kernel at least...

-- 
Joshua Kinard
Gentoo/MIPS
kumba at gentoo.org
4096R/D25D95E3 2011-03-28

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