[PATCH, libstdc++] Fix missing gthr-default.h issue on libstdc++ configure

[Andrew Pinski]

On Fri, Oct 5, 2012 at 12:13 PM, Andrew Pinski <pinskia@gmail.com> wrote:
> On Fri, Oct 5, 2012 at 7:32 AM, Pavel Chupin <pavel.v.chupin@gmail.com> wrote:
>> I can't configure libstdc++ separately. To reproduce:
>>
>> mkdir BUILD
>> cd BUILD
>> ../libstdc++-v3/configure
>>
>> Error:
>> make: *** No rule to make target
>> `/users/pvchupin/android/toolchain/gcc/gcc-4.8/BUILD/../libgcc/gthr-default.h',
>> needed by `bits/gthr-default.h'.  Stop.
>>
>> See fix attached.
>>
>> Ok for trunk and 4.7?
>
> Why do you want to compile libstdc++ separately from GCC?  I think you
> need to explain why you want to do that.  In fact libstdc++ depends on
> libgcc internals is not a bug but rather a feature.

One more thing is that for cases where target==host!=build, you can
just use the libraries which are produced by the cross compiler and
use "make all-host" and "make install-host" for the programs.

This should simplify how Yocto builds the "native" GCC and not
worrying about building libstdc++ separately.

Thanks,
Andrew Pinski

>
> Thanks,
> Andrew Pinski
>
>
>
>>
>> 2012-10-05  Pavel Chupin  <pavel.v.chupin@intel.com>
>>
>>         Fix missing gthr-default.h issue on separate libstdc++ configure
>>         * libstdc++-v3/acinclude.m4: Define glibcxx_thread_h.
>>         * libstdc++-v3/include/Makefile.am: Use glibcxx_thread_h.
>>         * libstdc++-v3/Makefile.in: Regenerate.
>>         * libstdc++-v3/configure: Regenerate.
>>         * libstdc++-v3/doc/Makefile.in: Regenerate.
>>         * libstdc++-v3/include/Makefile.in: Regenerate.
>>         * libstdc++-v3/libsupc++/Makefile.in: Regenerate.
>>         * libstdc++-v3/po/Makefile.in: Regenerate.
>>         * libstdc++-v3/python/Makefile.in: Regenerate.
>>         * libstdc++-v3/src/Makefile.in: Regenerate.
>>         * libstdc++-v3/src/c++11/Makefile.in: Regenerate.
>>         * libstdc++-v3/src/c++98/Makefile.in: Regenerate.
>>         * libstdc++-v3/testsuite/Makefile.in: Regenerate.
>>
>> --
>> Pavel Chupin
>> Intel Corporation