gmp/amd64 currently fails to build in raring, with g++-4.7-multilib 4.7.2-10ubuntu1:
https://launchpadlibrarian.net/123744259/buildlog_ubuntu-raring-amd64.gmp_2%3A5.0.5%2Bdfsg-2ubuntu2_FAILEDTOBUILD.txt.gz
Here's a reduced version of what it's doing:
$ cat t.cpp
/* This test rejects g++ 2.7.2 which doesn't have <iostream>, only a
pre-standard iostream.h. */
#include <iostream>
/* This test rejects OSF 5.1 Compaq C++ in its default pre-standard iostream
mode, since that mode puts cout in the global namespace, not "std". */
void someoutput (void) { std::cout << 123; }
int main (void) { return 0; }
$ x86_64-linux-gnu-g++ -m32 t.cpp
In file included from t.cpp:3:0:
/usr/include/c++/4.7/iostream:39:28: fatal error: bits/c++config.h: No such file or directory
compilation terminated.
$ find /usr -name c++config.h
/usr/include/x86_64-linux-gnu/c++/4.7/bits/c++config.h
/usr/include/x86_64-linux-gnu/c++/4.7/x32/bits/c++config.h
/usr/include/x86_64-linux-gnu/c++/4.7/32/bits/c++config.h
$ strace -f x86_64-linux-gnu-g++ -m32 t.cpp 2>&1 | fgrep c++config
[pid 29880] open("/usr/include/c++/4.7/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29880] open("/usr/include/c++/4.7/backward/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29880] open("/usr/lib/gcc/x86_64-linux-gnu/4.7/include/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29880] open("/usr/local/include/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29880] open("/usr/lib/gcc/x86_64-linux-gnu/4.7/include-fixed/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29880] open("/usr/include/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
/usr/include/c++/4.7/iostream:39:28: fatal error: bits/c++config.h: No such file or directory) = 126
[pid 29881] open("/usr/include/c++/4.7/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29881] open("/usr/include/c++/4.7/backward/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29881] open("/usr/lib/gcc/x86_64-linux-gnu/4.7/include/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29881] open("/usr/local/include/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29881] open("/usr/lib/gcc/x86_64-linux-gnu/4.7/include-fixed/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29881] open("/usr/include/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29882] open("/usr/include/c++/4.7/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29882] open("/usr/include/c++/4.7/backward/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29882] open("/usr/lib/gcc/x86_64-linux-gnu/4.7/include/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29882] open("/usr/local/include/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29882] open("/usr/lib/gcc/x86_64-linux-gnu/4.7/include-fixed/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29882] open("/usr/include/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29883] open("/usr/include/c++/4.7/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29883] open("/usr/include/c++/4.7/backward/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29883] open("/usr/lib/gcc/x86_64-linux-gnu/4.7/include/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29883] open("/usr/local/include/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29883] open("/usr/lib/gcc/x86_64-linux-gnu/4.7/include-fixed/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
[pid 29883] open("/usr/include/bits/c++config.h", O_RDONLY|O_NOCTTY) = -1 ENOENT (No such file or directory)
Looks like the compiler's notion of the include path for -m32 is wrong?
This bug was fixed in the package gcc-4.7 - 4.7.2-11ubuntu1
---------------
gcc-4.7 (4.7.2-11ubuntu1) raring; urgency=low
* Merge with Debian; remaining changes:
- Build from upstream source.
gcc-4.7 (4.7.2-11) experimental; urgency=low
* Update to SVN 20121124 (r193776) from the gcc-4_7-branch.
- Fix PR libgomp/55411, PR libstdc++/55413, PR middle-end/55142,
PR fortran/55352.
* Update build-indep dependencies for building the libstdc++ docs.
* Drop the gcc-no-add-needed patch, depend on binutils 2.22 instead.
* Pass --hash-style=gnu instead of --hash-style=both.
* Link using --hash-style=gnu on arm64 by default.
* Split multiarch patches into local and upstreamed parts.
* Fix PR54974: Thumb literal pools don't handle PC rounding (Matthew
Gretton-Dann). LP: #1049614, #1065509.
* Rename the gccgo info to gccgo-4.7 on installation, install into gccgo-4.7.
* Include libquadmath documentation in the gcc-4.7-doc package.
* Don't pretend to understand .d files, no D frontend available for 4.7.
* Fix the multiarch c++ include path for multilib'd targets. LP: #1082344.
* Make explicit --{en,dis}
-- Matthias Klose <email address hidden> Sat, 24 Nov 2012 06:09:46 +0100