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Subject: [Bug libstdc++/47762] FAIL: ext/mt_allocator/deallocate_global_thread-1.cc execution test
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47762

--- Comment #15 from Iain Sandoe <iains at gcc dot gnu.org> 2012-04-18 12:31:06 UTC ---
(In reply to comment #14)
> But anyway -static-libstdc++ works on Linux too to avoid the link-time problem.
> Still (on x86_64-linux) the testcase runs Ok for me.

OK. 
Just for the record - in case anyone is trying permutations;

libc, libm,  libpthread etc. are combined into libSystem.dylib on Darwin -
which is always required to be a dynamic link for User space code.

The compiler target libraries (less the NeXT objc one) can be linked statically
- including libgomp (since pthreads are always available via libSystem),

so static-lib{stdcc++, fortran, gcc} will work (barring other errors).

Note, however, that using -static-libgcc will *only* work so long as you don't
want to use any library [other than libSystem] or framework from /usr/lib or
/System or /Library that uses the unwinder.

Also, there is another (so far unhandled) bug with unwind generated by gcc >
4.5 - if you want to test code 'by hand' you should do
DYLD_LIBRARY_PATH=/path/to/gcc/build/dir  executable.

Sorry, it's on my TODO - but only applies to Darwin 9 (Darwin >= 10 is OK, so
far).