Bug#643639: libc6-dev: #include <errno.h> in C cannot compile with -m32 on x86_64

[Didier Trosset <didier@trosset.fr>]

Package: libc6-dev
Version: 2.13-21
Severity: important



-- System Information:
Debian Release: wheezy/sid
  APT prefers testing
  APT policy: (700, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 3.0.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages libc6-dev depends on:
ii  libc-dev-bin    2.13-21
ii  libc6           2.13-21
ii  linux-libc-dev  3.0.0-3

Versions of packages libc6-dev recommends:
ii  gcc [c-compiler]      4:4.6.1-2
ii  gcc-4.4 [c-compiler]  4.4.6-8  
ii  gcc-4.5 [c-compiler]  4.5.3-9  
ii  gcc-4.6 [c-compiler]  4.6.1-4  

Versions of packages libc6-dev suggests:
ii  glibc-doc     <none>  
ii  manpages-dev  3.32-0.2

-- no debconf information


With a simple program as the following:

#include <errno.h>

int main()
{
    return 0;
}


Compiling to 32 bits target with:

gcc -m32 test.c

results in the following error:

In file included from /usr/include/bits/errno.h:25:0,
                 from /usr/include/errno.h:36,
                 from test-errno.c:1:
/usr/include/linux/errno.h:4:23: fatal error: asm/errno.h: No such file or directory
compilation terminated.