Date: Sat, 10 Jul 2004 08:20:38 +1000 From: andrew clarke <mail@ozzmosis.com> To: Kris Kennaway <kris@obsecurity.org> Cc: freebsd-ports@freebsd.org Subject: Re: devel/linux_devtools question Message-ID: <20040709222037.GA70342@ozzmosis.com> In-Reply-To: <20040709212549.GA52445@xor.obsecurity.org> References: <20040709172523.GA64473@ozzmosis.com> <20040709212549.GA52445@xor.obsecurity.org>
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On Fri, Jul 09, 2004 at 02:25:49PM -0700, Kris Kennaway wrote:
> > $setenv CC /compat/linux/usr/bin/gcc
> >
> > $make blah
> > /compat/linux/usr/bin/gcc -O -pipe blah.c -o blah
> > In file included from /usr/include/errno.h:36,
> > from blah.c:1:
> > /usr/include/bits/errno.h:25:26: linux/errno.h: No such file or directory
> > *** Error code 1
> >
> > Stop in /usr/home/ozzmosis/src/csource/blah.
>
> Not going to work since the compiler will still see freebsd headers.
That's what I initially thought too, but gcc -v seems to suggest it
should work as it says it's looking in /compat/linux/[...]/include
first. Also, notice the file is named /usr/include/bits/errno.h, which
doesn't exist in the freebsd headers, but does in the linux headers, so
it does seem to be OK.
$/compat/linux/usr/bin/gcc -v -c blah.c
Reading specs from /compat/linux/usr/bin/../lib/gcc-lib/i386-redhat-linux/3.2/specs
...
ignoring nonexistent directory "/compat/linux/usr/i386-redhat-linux/include"
ignoring nonexistent directory "/usr/i386-redhat-linux/include"
ignoring duplicate directory "/usr/lib/gcc-lib/i386-redhat-linux/3.2/include"
#include "..." search starts here:
#include <...> search starts here:
/compat/linux/usr/lib/gcc-lib/i386-redhat-linux/3.2/include
/usr/local/include
/usr/include
End of search list.
In file included from /usr/include/errno.h:36,
from blah.c:1:
/usr/include/bits/errno.h:25:26: linux/errno.h: No such file or directory
This works:
$cat blah2.c
#include <stdio.h>
int main(void) { return puts("kwyjibo"; }
$/compat/linux/usr/bin/make blah2
cc blah2.c -o blah2
$file blah2
blah2: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for
GNU/Linux 2.2.5, dynamically linked (uses shared libs), not stripped
> chroot to /compat/linux and build from there, so the compiler
> toolchain sees only linux files.
$chroot /compat/linux
chroot: /compat/linux: Operation not permitted
Hmm. I've never used chroot. I assume it needs jail support in the
kernel? The man page is a bit vague about that.
Either way, I tend to think the linux_devtools port is missing some
important files:
$pwd
/usr/compat/linux
$find . | grep -c linux/errno
0
Regards
Andrew
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