I have RHEL5.

I did: [root@xxx Desktop]# rpm -Uvh gmp-4.2.2-7.fc9.i386.rpm

and I got the following warning and error:

warning: gmp-4.2.2-7.fc9.i386.rpm: Header V3 DSA signature: NOKEY, key ID 4f2a6fd2
error: Failed dependencies:
libgmpxx.so.3 is needed by (installed) gmp-devel-4.1.4-10.el5.i386

What's the warning about? Also, I installed libgmpxx.so.3 and it is in /usr/lib64 . Why is it still complaining??

Thanks.

Upgrading gmp is also upgrading libgmp (libgmpxx.so.4 is present in gmp-4.2.2-7). The older libgmp is needed by the older gmp-devel and hence you get the complaint by the package manager. Upgrade the devel package too and you should be fine.

The other problem is that you are using a Fedora 9 rpm on RHEL5.

Lazlow,
I know it is a Fedora rpm, I need gmp 4.2 to install the mprf library for GCC 4.3. I'd like to upgrade my gcc from 4.1.2 to 4.3.


premnarayan,

I also tried to upgrade the devel package and I got:
rpm -Uvh gmp-devel-4.2.2-7.fc9.i386.rpm
warning: gmp-devel-4.2.2-7.fc9.i386.rpm: Header V3 DSA signature: NOKEY, key ID 4f2a6fd2
error: Failed dependencies:
gmp = 4.2.2-7.fc9 is needed by gmp-devel-4.2.2-7.fc9.i386
libgmpxx.so.4 is needed by gmp-devel-4.2.2-7.fc9.i386

So it seems I need to install gmp = 4.2.2-7.fc9 first, but then it goes back to the old problem. Any thoughts?

You really cannot(reliably) use rpms from one distro (or version) on another. This is one of those cases where compiling from source is the answer.

Switching GCC versions on a system is not an easy thing to do. It would be a lot easier just to install F9 and go that route.

lazlow, we just can't switch our entire OS because of GCC. Thanks though.

Any other thoughts?

On RPM based distros the GCC version is very tightly tied to the OS. So be prepared for a workout.

Try this:
rpm -Uvh gmp-devel-4.2.2-7.fc9.i386.rpm gmp-4.2.2-7.fc9.i386.rpm

Thanks everyone. I successfully upgraded my gcc from 4.1 to 4.2. The key was to build everything from source.