Setting GCC 4.2 as the default compiler on Mac OS X Leopard

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Command line usage for all configure scripts:

  cd /usr/bin
  rm cc gcc c++ g++
  ln -s gcc-4.2 cc
  ln -s gcc-4.2 gcc
  ln -s c++-4.2 c++
  ln -s g++-4.2 g++

Make a record of the current link targets, so you can restore them if you want to.

If you don’t want to change the system wide settings, add a directory into PATH before /usr/bin (say, $HOME/bin), and make the symlinks there

I haven’t tested whether this affects Xcode projects, since I don’t use Xcode (only command line).

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