yum install gcc not working (network timeout)

AndyNZ · #1 16th August 2011, 09:11 AM

Hey guys I'm new to this forum - hope this is the correct subforum.

I am studying computer science at Otago uni in New Zealand and we do most of our coding on Fedora based machines. I have installed fedora on my laptop so it is dual booting with windows vista.

The only problem I am currently faced with is that gcc does not come preinstalled - I have googled how to install it and it seems I am supposed to use the command "sudo yum install gcc" which seems to start working:

Code:

"Loaded plugins: langpacks, presto, refresh-packagekit
Adding en_US to language list"

However it then goes on to repeat an infinite loop of:

Code:

"****://linuxdownload.adobe.***/linux/i386/repodata/repomd.xml: [Errno 12] Timeout on ****://linuxdownload.adobe.com/linux/i386/repodata/repomd.xml: (28, '')
Trying other mirror.
.

Am I doing anything wrong here? One thing to note is that I am connected to the net through my university network - is it possible that the uni is blocking these connections? How can I check this?

Any help will be appreciated.

Thanks in advance,
Andy.

***glennzo*** · #2 16th August 2011, 09:29 AM

Quote:

Originally Posted by AndyNZ

Hey guys I'm new to this forum - hope this is the correct subforum.

I am studying computer science at Otago uni in New Zealand and we do most of our coding on Fedora based machines. I have installed fedora on my laptop so it is dual booting with windows vista.

The only problem I am currently faced with is that gcc does not come preinstalled - I have googled how to install it and it seems I am supposed to use the command "sudo yum install gcc" which seems to start working:

Code:

"Loaded plugins: langpacks, presto, refresh-packagekit
Adding en_US to language list"

However it then goes on to repeat an infinite loop of:

Code:

"****://linuxdownload.adobe.***/linux/i386/repodata/repomd.xml: [Errno 12] Timeout on ****://linuxdownload.adobe.com/linux/i386/repodata/repomd.xml: (28, '')
Trying other mirror.
.

What version of Fedora? If it is an older, unsupported version you will likely have issues with the repositories. They will either be unavailable or you will need to specify an alternate archive url.

Quote:

Originally Posted by AndyNZ

Am I doing anything wrong here? One thing to note is that I am connected to the net through my university network - is it possible that the uni is blocking these connections? How can I check this?

Is there a proxy involved?

marriedto51 · #3 16th August 2011, 09:32 AM

Your error message looks like the Adobe repository is causing you trouble. Perhaps try again with

Code:

su -c 'yum --disablerepo=adobe-linux-i386 install gcc'

If that still fails, try running

Code:

su -c 'yum clean all'

(seems to be a nearly reflexive first fix when yum misbehaves!) then the install command.

If all that fails, too, you could try manually installing the libgcc and gcc rpms. You can navigate to these rpm files from http://download.fedora.redhat.com/pu...inux/releases/ (start by choosing the relevant version of Fedora, then "Everything"). Having downloaded them both to your disk, you can install with

Code:

su -c 'rpm -ivh <libgcc-filename.rpm> <gcc-filename.rpm>'

The pain with this manual approach is "dependency hell": it is possible that you will need other rpms installed first. I've had a quick look and I think you should have the other dependencies installed anyway, but sorry if I'm wrong.

AndyNZ · #4 16th August 2011, 11:42 AM

Quote:

Originally Posted by marriedto51

Your error message looks like the Adobe repository is causing you trouble. Perhaps try again with

Code:

su -c 'yum --disablerepo=adobe-linux-i386 install gcc'

When I try this command it says another app is holding the yum lock

Quote:

Originally Posted by marriedto51

If that still fails, try running

Code:

su -c 'yum clean all'

(seems to be a nearly reflexive first fix when yum misbehaves!) then the install command.

Same thing happens with this command

Quote:

Originally Posted by marriedto51

If all that fails, too, you could try manually installing the libgcc and gcc rpms. You can navigate to these rpm files from **LINK** (start by choosing the relevant version of Fedora, then "Everything"). Having downloaded them both to your disk, you can install with

Code:

su -c 'rpm -ivh <libgcc-filename.rpm> <gcc-filename.rpm>'

The pain with this manual approach is "dependency hell": it is possible that you will need other rpms installed first. I've had a quick look and I think you should have the other dependencies installed anyway, but sorry if I'm wrong.

Hmm I'm running version 14 of fedora - there seems to be a lot of files in different sub directories to download - how do i download them all at once and keep the structure?

---------- Post added at 10:00 AM ---------- Previous post was at 09:58 AM ----------

Quote:

Originally Posted by glennzo

What version of Fedora? If it is an older, unsupported version you will likely have issues with the repositories. They will either be unavailable or you will need to specify an alternate archive url.
Is there a proxy involved?

Fedora 14. How do I tell if there is a proxy involved? I have to use a proxy to use bittorrent.

---------- Post added at 10:42 AM ---------- Previous post was at 10:00 AM ----------

just tried again

Code:

[Andy@Programming ~]$ su -c 'yum --disablerepo=adobe-linux-i386 install gcc'
Password: 
Loaded plugins: langpacks, presto, refresh-packagekit
Adding en_US to language list
Error: Cannot retrieve repository metadata (repomd.xml) for repository: fedora. Please verify its path and try again
[Andy@Programming ~]$

marriedto51 · #5 16th August 2011, 02:31 PM

Quote:

Originally Posted by AndyNZ

When I try this command it says another app is holding the yum lock

As you saw, yum only allows one instance to be running at once. (That includes any automatic updating that may be happening.) So if you see this message again, just wait a little while and try again.

Quote:

Originally Posted by AndyNZ

Hmm I'm running version 14 of fedora - there seems to be a lot of files in different sub directories to download - how do i download them all at once and keep the structure?

There's no need to keep the structure. Assuming this is the 64-bit version of Fedora, just download the two files gcc-4.5.1-4.fc14.x86_64.rpm and libgcc-4.5.1-4.fc14.x86_64.rpm. (If you are using the 32-bit version of Fedora you need to replace the "x86_64" with "i386" throughout.)

Quote:

Originally Posted by AndyNZ

How do I tell if there is a proxy involved? I have to use a proxy to use bittorrent.

Personally I don't know a clever way to find out about any proxy you might be behind. Ask the uni sys admins if one is in use, perhaps? If you do find that you need to use a proxy IP address and port, you can specify it as part of the yum command with

Code:

yum --setopt=proxy=<proxy-URL:proxy-port> install gcc

marko · #6 16th August 2011, 09:35 PM

PackageKit might be the causing the lock

I think your yum problem is caused by the IPV6 interface causing DNS problems for your router, try disabling it and /or blacklisting it. How is frequently explained in the forum already.