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Autoconf Macro: ac_path_generic
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<h1>
ac_path_generic
</h1>
<h2>
Synopsis
</h2>
<p class="indent" style="white-space:nowrap;">
<code>AC_PATH_GENERIC(LIBRARY [, MINIMUM-VERSION [, ACTION-IF-FOUND [,
ACTION-IF-NOT-FOUND]]])</code>
</p>
<h2>
Description
</h2>
<div class="indent">
<p>
Runs a LIBRARY-config script and defines LIBRARY_CFLAGS and LIBRARY_LIBS
</p>
<p>
The script must support `--cflags' and `--libs' args. If MINIMUM-VERSION is
specified, the script must also support the `--version' arg. If the
`--with-library-[exec-]prefix' arguments to ./configure are given, it must
also support `--prefix' and `--exec-prefix'. (In other words, it must be
like gtk-config.)
</p>
<p>
For example:
</p>
<pre>
AC_PATH_GENERIC(Foo, 1.0.0)
</pre>
<p>
would run `foo-config --version' and check that it is at least 1.0.0
</p>
<p>
If so, the following would then be defined:
</p>
<pre>
FOO_CFLAGS to `foo-config --cflags`
FOO_LIBS to `foo-config --libs`
</pre>
<p>
At present there is no support for additional "MODULES" (see AM_PATH_GTK)
(shamelessly stolen from gtk.m4 and then hacked around a fair amount)
</p>
</div>
<h2>
Author
</h2>
<p class="indent">
Angus Lees <gusl@cse.unsw.edu.au>
</p>
<h2>
Last Modified
</h2>
<p class="indent">
2001-03-16
</p>
<h2>
M4 Source Code
</h2>
<div class="indent">
<pre class="m4source">
AC_DEFUN([AC_PATH_GENERIC],
[dnl
dnl we're going to need uppercase, lowercase and user-friendly versions of the
dnl string `LIBRARY'
pushdef([UP], translit([$1], [a-z], [A-Z]))dnl
pushdef([DOWN], translit([$1], [A-Z], [a-z]))dnl
dnl
dnl Get the cflags and libraries from the LIBRARY-config script
dnl
AC_ARG_WITH(DOWN-prefix,[ --with-]DOWN[-prefix=PFX Prefix where $1 is installed (optional)],
DOWN[]_config_prefix="$withval", DOWN[]_config_prefix="")
AC_ARG_WITH(DOWN-exec-prefix,[ --with-]DOWN[-exec-prefix=PFX Exec prefix where $1 is installed (optional)],
DOWN[]_config_exec_prefix="$withval", DOWN[]_config_exec_prefix="")
if test x$DOWN[]_config_exec_prefix != x ; then
DOWN[]_config_args="$DOWN[]_config_args --exec-prefix=$DOWN[]_config_exec_prefix"
if test x${UP[]_CONFIG+set} != xset ; then
UP[]_CONFIG=$DOWN[]_config_exec_prefix/bin/DOWN-config
fi
fi
if test x$DOWN[]_config_prefix != x ; then
DOWN[]_config_args="$DOWN[]_config_args --prefix=$DOWN[]_config_prefix"
if test x${UP[]_CONFIG+set} != xset ; then
UP[]_CONFIG=$DOWN[]_config_prefix/bin/DOWN-config
fi
fi
AC_PATH_PROG(UP[]_CONFIG, DOWN-config, no)
ifelse([$2], ,
AC_MSG_CHECKING(for $1),
AC_MSG_CHECKING(for $1 - version >= $2)
)
no_[]DOWN=""
if test "$UP[]_CONFIG" = "no" ; then
no_[]DOWN=yes
else
UP[]_CFLAGS="`$UP[]_CONFIG $DOWN[]_config_args --cflags`"
UP[]_LIBS="`$UP[]_CONFIG $DOWN[]_config_args --libs`"
ifelse([$2], , ,[
DOWN[]_config_major_version=`$UP[]_CONFIG $DOWN[]_config_args \
--version | sed 's/[[^0-9]]*\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
DOWN[]_config_minor_version=`$UP[]_CONFIG $DOWN[]_config_args \
--version | sed 's/[[^0-9]]*\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
DOWN[]_config_micro_version=`$UP[]_CONFIG $DOWN[]_config_args \
--version | sed 's/[[^0-9]]*\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
DOWN[]_wanted_major_version="regexp($2, [\<\([0-9]*\)], [\1])"
DOWN[]_wanted_minor_version="regexp($2, [\<\([0-9]*\)\.\([0-9]*\)], [\2])"
DOWN[]_wanted_micro_version="regexp($2, [\<\([0-9]*\).\([0-9]*\).\([0-9]*\)], [\3])"
# Compare wanted version to what config script returned.
# If I knew what library was being run, i'd probably also compile
# a test program at this point (which also extracted and tested
# the version in some library-specific way)
if test "$DOWN[]_config_major_version" -lt \
"$DOWN[]_wanted_major_version" \
-o \( "$DOWN[]_config_major_version" -eq \
"$DOWN[]_wanted_major_version" \
-a "$DOWN[]_config_minor_version" -lt \
"$DOWN[]_wanted_minor_version" \) \
-o \( "$DOWN[]_config_major_version" -eq \
"$DOWN[]_wanted_major_version" \
-a "$DOWN[]_config_minor_version" -eq \
"$DOWN[]_wanted_minor_version" \
-a "$DOWN[]_config_micro_version" -lt \
"$DOWN[]_wanted_micro_version" \) ; then
# older version found
no_[]DOWN=yes
echo -n "*** An old version of $1 "
echo -n "($DOWN[]_config_major_version"
echo -n ".$DOWN[]_config_minor_version"
echo ".$DOWN[]_config_micro_version) was found."
echo -n "*** You need a version of $1 newer than "
echo -n "$DOWN[]_wanted_major_version"
echo -n ".$DOWN[]_wanted_minor_version"
echo ".$DOWN[]_wanted_micro_version."
echo "***"
echo "*** If you have already installed a sufficiently new version, this error"
echo "*** probably means that the wrong copy of the DOWN-config shell script is"
echo "*** being found. The easiest way to fix this is to remove the old version"
echo "*** of $1, but you can also set the UP[]_CONFIG environment to point to the"
echo "*** correct copy of DOWN-config. (In this case, you will have to"
echo "*** modify your LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf"
echo "*** so that the correct libraries are found at run-time)"
fi
])
fi
if test "x$no_[]DOWN" = x ; then
AC_MSG_RESULT(yes)
ifelse([$3], , :, [$3])
else
AC_MSG_RESULT(no)
if test "$UP[]_CONFIG" = "no" ; then
echo "*** The DOWN-config script installed by $1 could not be found"
echo "*** If $1 was installed in PREFIX, make sure PREFIX/bin is in"
echo "*** your path, or set the UP[]_CONFIG environment variable to the"
echo "*** full path to DOWN-config."
fi
UP[]_CFLAGS=""
UP[]_LIBS=""
ifelse([$4], , :, [$4])
fi
AC_SUBST(UP[]_CFLAGS)
AC_SUBST(UP[]_LIBS)
popdef([UP])
popdef([DOWN])
])
</pre>
</div>
<h2>
License
</h2>
<div class="indent">
<span style="white-space:nowrap;">Copyright © 2001 Angus Lees
<gusl@cse.unsw.edu.au></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>
<p>
As a special exception, the respective Autoconf Macro's copyright owner
gives unlimited permission to copy, distribute and modify the configure
scripts that are the output of Autoconf when processing the Macro. You need
not follow the terms of the GNU General Public License when using or
distributing such scripts, even though portions of the text of the Macro
appear in them. The GNU General Public License (GPL) does govern all other
use of the material that constitutes the Autoconf Macro.
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<p>
This special exception to the GPL applies to versions of the Autoconf Macro
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