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I need to upgrade GCC. When I type yum install GCC it tells me Package gcc-4.1.2-51.el5.x86_64 already installed and latest version. Unfortunately I'm trying to install some software which requires GCC 4.3 minimum.

I checked out the possibility of installing GCC from source, but it looks very complicated!

How can I upgrade GCC to at least version 4.3 on CentOS?

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If you want to update the system gcc you should first establish that this will break nothing that relies on it. – Paul Dec 1 '11 at 5:56
Like what, for example? – Alasdair Dec 1 '11 at 5:57
GCC is just a compiler right? So why would applications use it. I thought it was just for compiling sources? – Alasdair Dec 1 '11 at 5:59
I am not entirely sure with Centos, but Centos expects system files to be the version that is issued - I would just add the "will it break stuff" query to your question so it gets addressed as well as the howto – Paul Dec 1 '11 at 6:01
Yes it is just a compiler, some distributions will recompile some updates. – Paul Dec 1 '11 at 6:08
up vote 4 down vote accepted

CentOS 5.x has the "gcc44" package containing GCC version 4.4.

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+1 - This is the workaround I have been using on my boxes, however it will require manual intervention in the future when 4.4 is moved into the main CentOS GCC rpm. – Turix Feb 10 '12 at 11:16

You could try Remi's repository. It usually has more up to date packages than the normal CentOS repository.

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While Remi's repo has some good updates, it tends to focus on the PHP/MySQL ecosystem. It happens that there are no GCC updates there for CentOS 5 or 6. – Charles Nov 8 '12 at 6:52

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