Linux – How to install an old version of gcc using yum on fedora 18

yum install gcc gcc-c++

This is NOT an answer to my question since I only show how to build and use GCC 4.9 in a way which works on Fedora 23 (and on any other platform probably, too). It's only the compilation of steps I had to do to compile with another version of GCC than the shipped one.

The shown steps are taken from here.

• lookup and download and exctract the appropriate archive from http://www.gnu.org/software/gcc/mirrors.html:

  wget ftp://ftp.fu-berlin.de/unix/languages/gcc/releases/gcc-4.9.3/gcc-4.9.3.tar.bz2
  mkdir src; cd src
  tar xf ../gcc-4.9.3.tar.bz2
  

• download prerequisites:

  cd gcc-4.9.3
  ./contrib/download_prerequisites
  

• configure the build (add --disable-multilib when you don't need a 32 bit build, set the install-prefix, add/remove languages):

  mkdir ../objdir; cd ../objdir
  ../gcc-4.9.3/configure \
      --prefix=`pwd`/../../gcc-4.9.3-x86_64 \
      --enable-languages=c,c++ \
      --disable-multilib
  

• actually build and install GCC:

  make -j4
  make install
  

You can now use this new compiler by just setting CC (maybe also CXX) before you run make or cmake:

export CC=</installation/path/to/gcc>/bin/gcc
make .

or

CC=</installation/path/to/gcc>/bin/gcc cmake <path>