Sample describing autotools usage.

• Create and write configure.ac in root directory and a Makefile.am in root directory and each subdirectory containing source code.

• Run autoreconf --install to perform configuration files and Makefile/Makefile.in generation
  (autoreconf runs autotools toolchain in right order: aclocal, autoconf, autoheader, automake).

• Use ./configure && make && sudo make install to install package.

• Use ./configure --prefix=/usr to change installation path.

• Use make CC=<pathToCompiler> CFLAGS="<compilerFlags>" to change compiler and compiler options (default to gcc and -g -O2 respectively).

• Official documentation.
• Slides describing autotools workflow.