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So just focusing on posix platform in these patches. gthr-posix-patch.txt includes the necessary changes to gthr-posix.h and gthr-posix.c. I moved some of the objc-only definitions so they are no longer objc-only (to avoid dup defs). The objc folk will have to take a look at this to make sure its ok (--enable-languages=c,c++,objc on x86_64 bootstraps fine for what its worth). The second patch is the libstdc++-v3 configury bits that basically tests for the required __gthread*_t types and functions using AC_TRY_LINK. This was slightly difficult because gthr-default hasn't been set up yet so I had to add -D_PTHREADS to CXXFLAGS (conditionally on posix thread model) so that gthr.h picks gthr-posix.h and I also had to add -DSUPPORTS_WEAK -DGTHREAD_USE_WEAK so that it linked (not 100% sure why however). I thought adding -pthreads to CXXFLAGS or LDFLAGS would pull in the posix library for linking (if available) but it didn't work. If AC_TRY_LINK succeeds, _GLIBCXX_HAS_GTHREADS is defined and the C++0x headers (<thread>, <mutex> and <condition_variable>) can use it to conditionally provide support for the thread library (similar to _GLIBCXX_USE_C99_STDINT_TR1) Chris
Attachment:
gthr-posix-patch.txt
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gthr-v3-configury-bits.txt
Description: Text document
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