Compiling C/C++ Programs For Embedded Linux -- autoconf

Many open source projects use configure scripts.  Some need overrides when cross-compiling, e.g.

    $ export ac_cv_func_setpgrp_void=yes 
    $ ./configure --target=ppc-405-linux-gnu --build=i686-linux

This generates a Makefile with CC=ppc-405-linux-gnu-gcc

Autoconf is complex; read its tutorials and macro library!