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Subject: Re: [OMPI users] compile openmpi with a gcc that is not default gcc??
From: Fabian Hänsel (fabian.haensel_at_[hidden])
Date: 2008-09-27 18:58:28


Hej,

> My default gcc is 2.95.3, so I installed a newer version in my own
> home directory, it's gcc-3.4.4. Now I want to install openmpi and
> compile it with this new version. I dont know how to force it not to

You do generally compile and install openmpi (and many other free
software) by running

  ./configure
  make
  make install

where configure looks for your system's peculiarities. Just tell
configure to use your own gcc by e.g. setting an environment variable:

  export CC=/home/mine/gcc/gcc
  ./configure

hint: you can also tell configure where to install openmpi with prefix,
e.g.

  export CC=/home/mine/gcc/gcc
  ./configure --prefix=/home/mine/openmpi/

Maybe you'll have to set other env vars as well (if your system's
linker e.g. does not like the new gcc). For more information have a
look at configure's help (./configure --help)

Best regards
  Fabian