On Tue, Sep 06, 2011 at 03:14:58PM +0100, Ben Hutchings wrote: > On Tue, 2011-09-06 at 14:44 +0200, Daniel Bayer wrote: > > Package: linux-libc-dev > > Version: 3.0.0-3 > > Severity: normal > > File: /usr/include/x86_64-linux-gnu/asm/errno.h > > since asm/errno.h was moved to the arch specific sub directory it is > > no longer possible to create 32 Bit Binaries on amd64: > > | $ echo '#include <errno.h>' | gcc -E -o - -m32 - > > | [...] > > | # 1 "/usr/include/bits/errno.h" 1 3 4 > > | # 25 "/usr/include/bits/errno.h" 3 4 > > | # 1 "/usr/include/linux/errno.h" 1 3 4 > > | In file included from /usr/include/bits/errno.h:25:0, > > | from /usr/include/errno.h:36, > > | from <stdin>:1: > > | /usr/include/linux/errno.h:4:23: fatal error: asm/errno.h: No such file or directory > > | compilation terminated. > > I guess with multiarch I should install the i386 deb, too. But this is > > not yet supported by dpkg in unstable, is it? > [...] > It's not. And since the kernel uses the same set of header files for > 32-bit and 64-bit versions of each architecture, I wonder whether that > would make sense. > Maybe the right way to do this is: > - linux-libc-dev (multiarch: same) becomes a metapackage depending on > linux-libc-dev-$SRCARCH > - linux-libc-dev-$SRCARCH (not multiarch) provides headers for all > architectures built from kernel $SRCARCH, with symlinks I think this entire bug report is based on a misunderstanding of how gcc -m32 is supposed to work. 'gcc -m32' is not guaranteed to work unless the gcc-multilib package is installed; and if gcc-multilib is installed, you get a /usr/include/asm compatibility symlink pointing to /usr/include/$triplet/asm. There are still some problems with this setup, but I don't agree that the issue reported here is one of them and I don't see any reason to change the linux-libc-dev package. -- Steve Langasek Give me a lever long enough and a Free OS Debian Developer to set it on, and I can move the world. Ubuntu Developer http://www.debian.org/ slangasek@ubuntu.com vorlon@debian.org
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