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Autoconf Macro: ac_lib_id3
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<h1>
ac_lib_id3
</h1>
<h2>
Synopsis
</h2>
<p class="indent" style="white-space:nowrap;">
<code>AC_LIB_ID3([ACTION-IF-TRUE], [ACTION-IF-FALSE])</code>
</p>
<h2>
Description
</h2>
<div class="indent">
<p>
This macro will check for the existence of id3lib (<a href=
"http://id3lib.sourceforge.net/">http://id3lib.sourceforge.net/</a>). It
does this by checking for the header file id3.h and the id3 library object
file. A --with-id3lib option is supported as well. The following output
variables are set with AC_SUBST:
</p>
<pre>
ID3_CPPFLAGS
ID3_LDFLAGS
ID3_LIBS
</pre>
<p>
You can use them like this in Makefile.am:
</p>
<pre>
AM_CPPFLAGS = $(ID3_CPPFLAGS)
AM_LDFLAGS = $(ID3_LDFLAGS)
program_LDADD = $(ID3_LIBS)
</pre>
<p>
Additionally, the C preprocessor symbol HAVE_ID3LIB will be defined with
AC_DEFINE if id3lib is available.
</p>
</div>
<h2>
Author
</h2>
<p class="indent">
Oskar Liljeblad <oskar@osk.mine.nu>
</p>
<h2>
Last Modified
</h2>
<p class="indent">
2005-04-18
</p>
<h2>
M4 Source Code
</h2>
<div class="indent">
<pre class="m4source">
AC_DEFUN([AC_LIB_ID3], [
AH_TEMPLATE([HAVE_ID3LIB], [Define if id3lib is available])
AC_ARG_WITH(id3lib, [ --with-id3lib=DIR prefix for id3 library files and headers], [
if test "$withval" = "no"; then
ac_id3_path=
$2
elif test "$withval" = "yes"; then
ac_id3_path=/usr
else
ac_id3_path="$withval"
fi
],[ac_id3_path=/usr])
if test "$ac_id3_path" != ""; then
saved_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS -I$ac_id3_path/include"
AC_CHECK_HEADER([id3.h], [
saved_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -L$ac_id3_path/lib"
AC_CHECK_LIB(id3, ID3Tag_New, [
AC_SUBST(ID3_CPPFLAGS, [-I$ac_id3_path/include])
AC_SUBST(ID3_LDFLAGS, [-L$ac_id3_path/lib])
AC_SUBST(ID3_LIBS, [-lid3])
AC_DEFINE([HAVE_ID3LIB])
$1
], [
:
$2
])
LDFLAGS="$saved_LDFLAGS"
], [
AC_MSG_RESULT([not found])
$2
])
CPPFLAGS="$saved_CPPFLAGS"
fi
])
</pre>
</div>
<h2>
License
</h2>
<div class="indent">
<span style="white-space:nowrap;">Copyright © 2005 Oskar Liljeblad
<oskar@osk.mine.nu></span>
<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.
</p>
<p>
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc., 59
Temple Place - Suite 330, Boston, MA 02111-1307, USA.
</p>
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