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cgccscons

Changing default C compiler in Linux, using SCons

On my Linux platform, I have several versions of gcc.

Under usr/bin I have:

  • gcc34
  • gcc44
  • gcc

Here are some outputs:

$ gcc --version
gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-48)

$ gcc44 --version
gcc44 (GCC) 4.4.0 20090514 (Red Hat 4.4.0-6)

I need to use the 4.4 version of gcc however the default seems to the 4.1 one.

I there a way to replace /usr/bin/gcc and make gcc44 the default compiler not using a symlink to /usr/bin/gcc44 ?

The reason why I can't use a symlink is because my code will have to be shipped in a RPM package using mock. mock creates a minimal linux installation from scratch and just install the specified dependencies before compiling my code in it. I cannot customize this "minimal installation".

Ideally, the perfect solution would be to install an official RPM package that replaces gcc with gcc44 as the default compiler. Is there such a package ? Is this even possible/good ?

Additional information

I have to use SCons (a make alternative) and it doesn't let me specify the binary to use for gcc.

I will also accept any answer that will tell me how to specify the gcc binary in my SConstruct file.

Solution

    1. One way is to compile and install gcc from source.

    2. See http://old.nabble.com/Choosing-compiler-td4675207.html

    From that:

    env = Environment()
env.Replace(CC = "my_cc_compiler")

    Or, as per the answer to this question,

    env['CC'] = 'gcc44'