[U-Boot] [PATCH] ARM: enable CONFIG_USE_PRIVATE_LIBGCC by default (re-send to the correct address)

[Masahiro Yamada]

2015-07-02 16:39 GMT+09:00 Wolfgang Denk <wd at denx.de>:
> Dear Daniel,
>
> In message <55947A25.5020702 at gmail.com> you wrote:
>>
>> CONFIG_USE_PRIVATE_LIBGCC should be removed. If an architecture supports
>> a private libgcc, then it should always use it. I think for U-Boot it is
>> better and safer to have all code under control instead of pulling in
>> external code from toolchains which are often somehow broken.
>
> This is the wrong approach.  If a tool is broken, it should be
> reported, and fixed.
>
>> Speaking for MIPS we have boards with all combinations of Big
>> Endian/Little Endian and Hard Float/Soft Float. You need an own libgcc
>> binary for each FPU variant, but almost no toolchain supports this. Thus
>
> Why would that be the case?  We do not use any floating point stuff in
> U-Boot...
>
>
> I agree that there is the endianess issue - MIPS is currently the
> only architecture (I am aware of) that supports both BE and LE con-
> figurations.  But this is a tool chain issue!  You will need support
> from the tool chain not only for U-Boot (and the kernel), but also for
> user space.  If your tool chain is nbroken, it needs fixing.
>
>> BTW: Linux kernel or Barebox always use a private libgcc.
>
> And what do you do about user space with such a broken tool chain?
>
> It does not help to paper over problems.
>

Some people might want to build only U-boot from source code
and install a pre-built distribution, maybe ?





-- 
Best Regards
Masahiro Yamada