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Autoconf Macro: check_zlib
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<h1>
check_zlib
</h1>
<h2>
SYNOPSIS
</h2>
<p class="indent" style="white-space:nowrap;">
<code>CHECK_ZLIB()</code>
</p>
<h2>
DESCRIPTION
</h2>
<div class="indent">
<p>
This macro searches for an installed zlib library. If nothing was specified
when calling configure, it searches first in /usr/local and then in /usr.
If the --with-zlib=DIR is specified, it will try to find it in
DIR/include/zlib.h and DIR/lib/libz.a. If --without-zlib is specified, the
library is not searched at all.
</p>
<p>
If either the header file (zlib.h) or the library (libz) is not found, the
configuration exits on error, asking for a valid zlib installation
directory or --without-zlib.
</p>
<p>
The macro defines the symbol HAVE_LIBZ if the library is found. You should
use autoheader to include a definition for this symbol in a config.h file.
Sample usage in a C/C++ source is as follows:
</p>
<pre>
#ifdef HAVE_LIBZ
#include <zlib.h>
#endif /* HAVE_LIBZ */
</pre>
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<h2>
SOURCE CODE
</h2>
<p class="indent">
<a href=
"http://autoconf-archive.cryp.to/check_zlib.m4">http://autoconf-archive.cryp.to/check_zlib.m4</a>
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<h2>
LICENSE
</h2>
<div class="indent">
<p style="white-space:nowrap;">
Copyright © 2008 Loic Dachary <loic@senga.org>
</p>
<p>
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your option)
any later version.
</p>
<p>
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
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with this program. If not, see <<a href=
"http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>>.
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