Re: [gentoo-user] gcc problems after dep -d

[Justin Findlay <justin@jfindlay.us>]

On AD 2006 October 28 Saturday 11:40:13 AM +0200, Hans de Hartog wrote:
> checking for C++ compiler default output file name... configure: error:
> C++ compiler cannot create executables
> 
> or
> 
> gcc-config error: Could not run/locate "gcc"
> ...
> [I--] [ -] sys-devel/gcc-4.1.1 (4.1)
> [I--] [  ] sys-devel/gcc-config-1.3.13-r4 (0)
> [I--] [  ] x11-misc/gccmakedep-1.0.2 (0)

I think there is more going on here than gcc-config.  I encountered the
very same problems on my machine only after having done an `emerge -uDN
world` and only having one compiler, gcc-4.4.4-r1, on the system.

Hans, I was able to fix gcc-config with `gcc-config -f 1`.  However not
only is /usr/bin/gcc seg faulting but
/usr/x86_64-pc-linux-gnu/gcc-bin/4.1.1/gcc is also insomuch that I can't
even compile this simple program without a segmentation fault,

int main()
{
  return 0;
}

yet even after having done `gcc-config -f 1` the profile may be correct
according to gcc-config,

# gcc-config -l
 [1] x86_64-pc-linux-gnu-4.1.1 *

but the compiler still gives segmentation faults.  This totally baffles
me as `ldd /usr/x86_64-pc-linux-gnu/gcc-bin/4.1.1/gcc` shows that gcc
only links in

        libc.so.6 => /lib/libc.so.6 (0x00002aadee5c4000)
        /lib64/ld-linux-x86-64.so.2 (0x00002aadee4a6000)

and the mtimes on all three files (gcc, libc.so, ld-linux-x86-64.so)
are according to ls:

lrwxrwxrwx 1 root root   23 Sep  4 22:39 /usr/x86_64-pc-linux-gnu/gcc-bin/4.1.1/gcc -> x86_64-pc-linux-gnu-gcc
-rwxr-xr-x 1 root root 140K Sep  4 22:39 /usr/x86_64-pc-linux-gnu/gcc-bin/4.1.1/x86_64-pc-linux-gnu-gcc

-rwxr-xr-x 1 root root 1.4M Oct  1 22:54 /lib64/libc-2.5.so
lrwxrwxrwx 1 root root   11 Oct  1 22:54 /lib64/libc.so.6 -> libc-2.5.so

-rwxr-xr-x 1 root root 140K Oct  1 22:54 /lib64/ld-2.5.so
lrwxrwxrwx 1 root root    9 Oct  1 22:54 /lib64/ld-linux-x86-64.so.2 -> ld-2.5.so

These files are clearly much older than yesterday which is when I began
having these gcc problems.  Unfortunately I'm still stumped and am
without a working gcc in the meantime.


Justin
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