Adding Some Real Functionality

I've suggested before that you should call config.status in your makefiles to generate those makefiles from templates. Example 3-4 shows the code in configure.ac that actually makes this happen. It's just a single additional macro call between the two original lines of Example 3-1.

Example 3-4. configure.ac: Using the AC_CONFIG_FILES macro

AC_INIT([Jupiter],[1.0])
AC_CONFIG_FILES([Makefile src/Makefile])
AC_OUTPUT

This code assumes that templates exist for Makefile and src/Makefile, called Makefile.in and src/Makefile.in, respectively. These template files look exactly like their Makefile counterparts, with one exception: Any text that I want Autoconf to replace is marked as an Autoconf substitution variable, using ...

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