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diff --git a/devdocs/gnu_make/makefiles-variable.html b/devdocs/gnu_make/makefiles-variable.html new file mode 100644 index 00000000..e8e57374 --- /dev/null +++ b/devdocs/gnu_make/makefiles-variable.html @@ -0,0 +1,6 @@ + <h1 class="section">The Variable MAKEFILES</h1> <p>If the environment variable <code>MAKEFILES</code> is defined, <code>make</code> considers its value as a list of names (separated by whitespace) of additional makefiles to be read before the others. This works much like the <code>include</code> directive: various directories are searched for those files (see <a href="include">Including Other Makefiles</a>). In addition, the default goal is never taken from one of these makefiles (or any makefile included by them) and it is not an error if the files listed in <code>MAKEFILES</code> are not found. </p> <p>The main use of <code>MAKEFILES</code> is in communication between recursive invocations of <code>make</code> (see <a href="recursion">Recursive Use of <code>make</code></a>). It usually is not desirable to set the environment variable before a top-level invocation of <code>make</code>, because it is usually better not to mess with a makefile from outside. However, if you are running <code>make</code> without a specific makefile, a makefile in <code>MAKEFILES</code> can do useful things to help the built-in implicit rules work better, such as defining search paths (see <a href="directory-search">Directory Search</a>). </p> <p>Some users are tempted to set <code>MAKEFILES</code> in the environment automatically on login, and program makefiles to expect this to be done. This is a very bad idea, because such makefiles will fail to work if run by anyone else. It is much better to write explicit <code>include</code> directives in the makefiles. See <a href="include">Including Other Makefiles</a>. </p><div class="_attribution"> + <p class="_attribution-p"> + Copyright © 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 Free Software Foundation, Inc. <br>Licensed under the GNU Free Documentation License.<br> + <a href="https://www.gnu.org/software/make/manual/html_node/MAKEFILES-Variable.html" class="_attribution-link">https://www.gnu.org/software/make/manual/html_node/MAKEFILES-Variable.html</a> + </p> +</div> |