Package: mingw-w64
Version: 1.0+20110523-1
Severity: normal
Consider the following code:
-------------------------------
#include <emmintrin.h>
#include <windows.h>
int
main(int argc, char **argv)
{
}
-------------------------------
When compiled with g++ on i686 with SSE2 it works fine:
$ i686-w64-mingw32-g++ -msse2 foo.cc
When compiled with g++ on x86_64 it fails:
$ 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
[Lots of similar errors]
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.
-- System Information:
Debian Release: wheezy/sid
APT prefers testing
APT policy: (990, 'testing'), (600, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.38-2-amd64 (SMP w/8 CPU cores)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages mingw-w64 depends on:
ii gcc-mingw-w64 4.6.0-11 GNU Compiler Collection for MinGW-
ii mingw-w64-dev 1.0+20110523-1 Development files for MinGW-w64
mingw-w64 recommends no packages.
mingw-w64 suggests no packages.
-- no debconf information
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