Stephen Kitt <[email protected]> writes: > On Mon, Jul 11, 2011 at 03:52:15PM +0200, Sébastien Villemot wrote: >> $ x86_64-w64-mingw32-g++ foo.cc >> In file included from >> /usr/lib/gcc/x86_64-w64-mingw32/4.6.1/../../../../x86_64-w64-mingw32/include/winnt.h:1435:0, >> from >> /usr/lib/gcc/x86_64-w64-mingw32/4.6.1/../../../../x86_64-w64-mingw32/include/windef.h:136, >> from >> /usr/lib/gcc/x86_64-w64-mingw32/4.6.1/../../../../x86_64-w64-mingw32/include/windows.h:62, >> from foo.cc:3: >> /usr/lib/gcc/x86_64-w64-mingw32/4.6.1/include/emmintrin.h:234:1: error: >> previous declaration of ‘__m128d _mm_add_sd(__m128d, __m128d)’ with ‘C++’ >> linkage >> /usr/lib/gcc/x86_64-w64-mingw32/4.6.1/../../../../x86_64-w64-mingw32/include/intrin.h:677:5: >> error: conflicts with new declaration with ‘C’ linkage >> /usr/lib/gcc/x86_64-w64-mingw32/4.6.1/include/emmintrin.h:228:1: error: >> previous declaration of ‘__m128d _mm_add_pd(__m128d, __m128d)’ with ‘C++’ >> linkage >> /usr/lib/gcc/x86_64-w64-mingw32/4.6.1/../../../../x86_64-w64-mingw32/include/intrin.h:678:5: >> error: conflicts with new declaration with ‘C’ linkage >> /usr/lib/gcc/x86_64-w64-mingw32/4.6.1/include/emmintrin.h:270:1: error: >> previous declaration of ‘__m128d _mm_div_sd(__m128d, __m128d)’ with ‘C++’ >> linkage >> /usr/lib/gcc/x86_64-w64-mingw32/4.6.1/../../../../x86_64-w64-mingw32/include/intrin.h:679:5: >> error: conflicts with new declaration with ‘C’ linkage > > Apparently this is already known upstream; see > <https://sourceforge.net/tracker/index.php?func=detail&aid=2962480&group_id=2435&atid=102435>. > Kai Tietz sent a patch for gcc > (<http://gcc.gnu.org/ml/gcc-patches/2010-03/msg00033.html>) but it > hasn't been applied yet.
Thanks for pointing me to this. >> Note that in my original program I was trying to include both: >> >> #include <boost/math/special_functions/lanczos.hpp> >> #include <windows.h> >> >> Then I tracked the problem down to emmintrin.h, which is included by the >> Boost >> header when SSE2 is present. > > Perhaps the workaround given in the sourceforge.net bug report would > work: > > #include <windows.h> > #include <boost/math/special_functions/lanczos.hpp> Actually my setup is a bit more complicated than that, I have several nested inclusion levels with many headers, so this workaround may not be easy to apply in my case, but I will try. Of course, from my point of view, the best solution would be to incorporate the aforementionned patch in the next package upload. Many thanks, -- Sébastien Villemot CEPREMAP - Paris School of Economics Homepage: http://www.dynare.org/sebastien Landline phone: +33 1 40 77 49 90 SIP phone: [email protected] PGP Key: 2069 1DFC C2C9 8C47 9529 84EE 0001 8C22 381A 7594
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