Having multiple GCC Version at the same time

[Grigory Zagorodnev]

Olivier Delannoy wrote:
> Hello,
> I am trying to have various GCC environment in parallel to make some
You can completely separate two GCC environments alternating 
installation root with --prefix=PREFIX option of configure script. Thus 
you can switch between configurations overriding PATH and 
LD_LIBRARY_PATH like this:
     PATH=$PREFIX/bin:$PATH
     LD_LIBRARY_PATH=$PREFIX/lib64:$LD_LIBRARY_PATH
     LD_LIBRARY_PATH=$PREFIX/lib:$LD_LIBRARY_PATH

Otherwise you can use same installation prefix for all configurations 
and switch between compilers using '-V_version_' option of gcc driver.

> environment. Does C libraries have to be available for the various
> compiler version ? Does C++ libraries have to be available for the
> various compiler version ?
Yes.

- Grigory