Take the 2-minute tour ×
Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems.. It's 100% free, no registration required.

Apologies if this has been asked already, but I'm such a beginner, I'm not even able phrase a search query for this.

Background

My company uses a small out-dated cluster (CentOS 5.4) to do number crunching (finite element calculations to be more specific). They are using a commercial package and have no idea of Linux. They don't want to change anything on the machines as long as they run, which I accept as a time-effective policy. I do not have administrative rights.

I can have them install smaller packages, but not change e.g. the python version from 2.4 to 2.6+, so I decided to compile the current version (./configure --prefix=/home/mysuser/root2) and ran into a few problems with the dependencies (wrong version of e.g. readline, zlib, curses, bz2 ... or packages not found). I also need to update gcc which complaines about missing GMP, MPFR and MPC.

The reason for doing this is I'd like to compile other test software to do run on these machines. What can I do to effectively install the packages I need in order to compile the software I need to work with? I'm elsewhere using archlinux and would find it quite handy to be able to do something along the lines

pacman --root /home/myuser/root2 -S <package>

But I have no idea if this is possible or clever.

Other related SE questions: gentoo-prefix and pkgsrc seem to be not so easy (I may be wrong, though).

share|improve this question
    
You should be able to do local installs, eg in your home directory. Are these installs just for your own use? Is there some reason you can't use other, more up-to-date machines? –  Faheem Mitha Apr 2 '12 at 8:21
    
Yes just for me. I'm currently using ./configure --prefix ...; make; make install but I'm looking for a way that simplifies the dependency resolution. –  Sebastian Apr 2 '12 at 8:40
    
Dependency resolution is usually handled by the systems package management, but using package management for locally installed packages is difficult. Is creating some kind of virtual machine for yourself an option? –  Faheem Mitha Apr 2 '12 at 8:53
    
no, because I want to use it for high performance calculations (using MPI etc). –  Sebastian Apr 2 '12 at 8:56

2 Answers 2

up vote 3 down vote accepted

Your management is wise in not trying to upgrade a working cluster that is performing an important function based on a proprietary package.

Backporting packages is time consuming and risky, that is, not always feasible. You might avoid the time penalty if you can finding the packages that you want to install in the original CentOS 5.4 repository or in some CentOS 5.4 backport repository. While you can have several versions of GCC on one host at the same time (the embedded systems/cross compile folks do this all the time), but it is not trivial to have more than one glibc in a single run-time environment.

So, you are best advised to work in a separate, newer environment that has the packages that you need and find some way to test the output of the old environment in the new one. In any event, do not risk breaking anything in the old environment or you may need all of the stackexchange.com reputation points that you can get to find your next job ;-)

share|improve this answer
    
thanks for this answer. I'm not familiar with CentOS that much. Can I install (in other than /) using yum and the packages from a web repository? thanks –  Sebastian Apr 2 '12 at 7:52
2  
You can download rpm packages to your personal directory and then use these instructions to extract the files, including any executables –  Eli Rosencruft Apr 2 '12 at 8:20
    
I found this mirror and managed to get something working (mirror.centos.org/centos/5/os/x86_64/CentOS) . For the moment the gentoo prefix seems to be a less complicated alternative. –  Sebastian Apr 5 '12 at 9:51

Installing packages from distributions is often difficult when you don't have root permissions, as they assume a fixed directory layout and the dependency system tends to require some packages with setuid or setgid programs that you can't install as non-root.

Compiling from source is more often than not the easiest way. (And if you're after speed, you can choose the best compilation options for your particular processor model.)

To organize the packages that you compile (or install by extracting tarballs), I recommend using stow or the more powerful but more complex xstow. Their basic mode of operation is to install each package in a separate directory, then create symbolic links to put them all together. Here's a typical compilation and installation session with stow:

tar xzf foobar-42.tar.gz
cd foobar-42
./configure --prefix=~/software/stow/foobar-42
make
make install
cd ~/software/stow
stow foobar-42

That last command creates symbolic links from files and directories under ~/software/stow under ~/software. For example, if ~/software/stow/foobar-42 contains a lib/foobar directory and files bin/foobar and man/man1/foobar.1, then you will end up with symbolic links

~/software/bin/foobar -> ../stow/foobar-42/bin/foobar
~/software/lib/foobar -> ../stow/foobar-42/lib/foobar
~/software/man/man1/foobar.1 -> ../../stow/foobar-42/man/man1/foobar.1

To uninstall a program, run stow -D foobar-42 in the ~/software/stow directory, and delete ~/software/stow/foobar-42. To make a program temporarily unavailable (e.g. to try another version), just run the stow -D part.

See also Non-Root Package Managers ; Best way to upgrade vim/gvim to 7.3 in Ubuntu 10.04?

share|improve this answer
    
I'm going to test this, it sounds interesting! –  Sebastian Apr 3 '12 at 6:15

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.