Autoconf, Automake, and Libtool: Canadian Cross Tools

| ### 26.4.5 Canadian Cross Tools You must explicitly specify the cross tools which you want to use to build the program. This is done by setting environment variables before running the ``configure'` script. You must normally set at least the environment variables ``CC'`, ``AR'`, and ``RANLIB'` to the cross tools which you want to use to build. For some programs, you must set additional cross tools as well, such as ``AS'`, ``LD'`, or ``NM'`. You would set these environment variables to the build cross host tools which you are going to use. For example, if you are building a Solaris program on a GNU/Linux system, and your GNU/Linux cross Solaris compiler were named ``solaris-gcc'`, then you would set the environment variable ``CC'` to ``solaris-gcc'`.

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