On Android NDK libstdc++ is configured, built and packaged separately. The problem is not dependency on libgcc sources but rather dependency on the symlink which is generated during libgcc build and cannot be found if libstdc++ is configured and built separately. It was working fine for 4.4 and 4.6. This issue has been introduced in 4.7.
Do you think libstdc++ should not be built separately? 2012/10/6 Andrew Pinski <pins...@gmail.com>: > On Fri, Oct 5, 2012 at 12:13 PM, Andrew Pinski <pins...@gmail.com> wrote: >> On Fri, Oct 5, 2012 at 7:32 AM, Pavel Chupin <pavel.v.chu...@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.chu...@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 -- Pavel Chupin Software Engineer Intel Corporation
