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Old 06-07-2006, 08:45 AM   #1
noware
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Registered: Oct 2005
Location: Hungary
Distribution: FC6 , freeBSD
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How to tell a package what gcc version to use?


Hi All!

I have Fedora3 on my box, with gcc-4.1.1 installed.
I want to install MPlayer, which compiles only with 3.x.x gcc compilers, but other stuff need the gcc-4.1.1.
I compiled gcc-3.4.4 to /opt/gcc3, but I cannot find a way to tell MPlayer's configure script to use this one.
Is tehere a way to make it use the version I installed at /opt/gcc3?

Any help would be appreciated!
Thanks!

:noware:
 
Old 06-07-2006, 09:16 AM   #2
haertig
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Registered: Nov 2004
Distribution: Debian, Ubuntu, LinuxMint, Slackware, SysrescueCD
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You could try setting some enironmental variables before compiling (I don't know if MPlayer will honor them however):
Code:
# CC=/usr/bin/gcc-3.3
# export CC
If that doesn't work, you could brute force some symlinks to point to the compiler you want. On my system, /usr/bin/gcc is just a symlink to /usr/bin/gcc-4.0 Similar link exists for gccbug. I have removed these symlinks and recreated new ones pointing to older compiler version in the past, and this worked for me.

Here's what the compiler looks like in my /usr/bin. You can see the symlinks illustrated:
Code:
$ cd /usr/bin
$ pwd
/usr/bin
$ ls -l gcc*
lrwxrwxrwx 1 root root     7 2006-01-15 10:58 gcc -> gcc-4.0
-rwxr-xr-x 1 root root 81072 2005-12-23 19:20 gcc-3.3
-rwxr-xr-x 1 root root 89136 2005-12-01 17:12 gcc-4.0
lrwxrwxrwx 1 root root    10 2006-01-15 10:58 gccbug -> gccbug-4.0
-rwxr-xr-x 1 root root 15963 2005-12-23 19:15 gccbug-3.3
-rwxr-xr-x 1 root root 16239 2005-12-01 17:06 gccbug-4.0
$
Below you can see how I required g++ version 3.3 back in January to compile something. My symlink is still pointing to the older compiler. I guess I should fix that now, but it conveniently illustrates what I'm recommending. If I remember correctly on that January compile, I could redirect to the older version of gcc using the CC enviroment variable, but I had to brute-force the g++ redirect using the symlink trick. Just don't forget to undo it after you're done (I should talk - it's obvious I forgot to undo mine!):
Code:
$ ls -l g++*
lrwxrwxrwx 1 root root     7 2006-01-08 20:47 g++ -> g++-3.3
-rwxr-xr-x 1 root root 84720 2005-12-23 19:20 g++-3.3
-rwxr-xr-x 1 root root 93008 2005-12-01 17:10 g++-4.0
$

Last edited by haertig; 06-07-2006 at 09:18 AM.
 
  


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