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== Dependency checking ==
In new development, library dependency checking has been done in great part using [[pkg-config]] via the [[M4 (computer language)|m4]] macro, PKG_CHECK_MODULES. Before pkg-config's gained popularity, separate m4 macros were created to locate files known to be included in the distribution of libraries depended upon.
 
==History==
The first program to come with a '''Configure script''' was [[rn (newsreader)|rn]] by [[Larry Wall]] in 1984.
Notable for its wry and jocular running commentary, that script was written entirely by hand and still survives as part of the build system of the '''trn''' program.
 
Since then, an ecosystem of programs has grown up to automate the creation of '''Configure script'''s as far as possible, of which the most common is the GNU Autoconf system described above.
 
== See also ==