I have done some recent upgrades, using yum, to my FC4 system. But now, if I try and run another upgrade (after having installed some other packages, also via yum) I get this:

---
---> Package elfutils-libelf-devel.i386 0:0.108-1 set to be updated
--> Running transaction check
--> Processing Dependency: perl(String::CRC32) for package: lftp
--> Finished Dependency Resolution
Error: Missing Dependency: perl(String::CRC32) is needed by package lftp
[root@localhost ~]# yum install perl
Setting up Install Process
Setting up repositories
atrpms 100% |=========================| 951 B 00:00
freshrpms 100% |=========================| 951 B 00:00
extras 100% |=========================| 1.1 kB 00:00
updates-released 100% |=========================| 951 B 00:00
base 100% |=========================| 1.1 kB 00:00
Reading repository metadata in from local files
primary.xml.gz 100% |=========================| 346 kB 00:01
updates-re: ################################################## 975/975
Added 8 new packages, deleted 22 old in 1.44 seconds
Parsing package install arguments
Nothing to do
[root@localhost ~]#
---

Perl is installed as you may see in the second command. How do I resolve this so that yum works to check for system updates?

You have the "lftp" package from the ATrpms repo, which depends on the "perl-String-CRC32" package from Dries, which is not one of your Yum repos.

Thanks. I don't need lftp, so took the easy route and uninstalled. Now dependencies are fine.

be carefully which repositories you mix!!!
Some are not compatible with others and that will lead to dependency problems!

In your case:

Livna is compatible with Fedora Extras: http://rpm.livna.org/configuration.html


Claus