New version of Cinelerra (2.0) is out, but it seems that it needs gcc 3.4.4 .

Mandriva LE 2005 has gcc 3.4.3, so is there a safe way (Mandriva rpm, anywhere?) to update gcc?

The best way to upgrade gcc on mandriva is to get the source rpm from one of the cooker mirrors and rebuild it. I'm using cinelerra 2 with gcc 4.0.1-0.2mdk and it's working fine.

To rebuild an srpm, install the rpmbuild packages from urpmi, then use this command as root:

rpmbuild --rebuild name-of-the-package.src.rpm

If it complains about missing dependencies, you can install them from urpmi.
Once the compile finishes you can find rpms ready to install in /usr/src/RPM/RPMS/i586.

Thanks. I tried that and:

varoitus: user gb does not exist - using root
varoitus: group gb does not exist - using root
varoitus: user gb does not exist - using root
varoitus: group gb does not exist - using root
varoitus: user gb does not exist - using root
varoitus: group gb does not exist - using root
varoitus: user gb does not exist - using root
varoitus: group gb does not exist - using root
virhe: unpacking of archive failed on file /usr/src/RPM/SOURCES/gcc-4.0.1-20050606.tar.bz2;432d8da8: cpio: read

("varoitus" means warning and "virhe" means error)

I can install gcc version 4.0.1-0.2mdk from cooker directly, but after trying to install cinelerra 2.0 rpm, Mandriva still complains about dependencies (glibc 3.44 and libstdc++.so.6)

The file is probably corrupt. You could try downloading again.

You probably didn't get all the packages you need. When you compile the srpm it makes a bunch of packages:

gcc
gcc-c++
gcc-colorgcc
gcc-cpp
gcc-gfortran
gcc-gnat
gcc-objc
libffi4-devel
libgcc1
libgfortran0
libgnat1
libmudflap0
libmudflap0-devel
libobjc1
libstdc++6
libstdc++6-devel
libstdc++6-static-devel