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#
# Copyright (C) 2004 Boretti Mathieu
#
# 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.
#
# 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.
#
# 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
#
#
# AC_LATEX_PACKAGES([<package1>,<package2>,...,<packagen>],<class>,<variable>)
#
# Test the presences of package1 or if not package2 and so
# Using class <class> and set $<variable> to the right value
# or no if not found
#
#
dnl @synopsis AC_LATEX_PACKAGES([<package1>,<package2>,<package3>],<class>,<variable>)
dnl
dnl This macro test if package1 in <class> exists and if not package2 and so
dnl and set <variable> to the right value
dnl
dnl AC_LATEX_PACKAGES([allo,varioref,bonjour],book,vbook)
dnl should set $vbook="varioref"
dnl
dnl @version 1.3
dnl @author Mathieu Boretti boretti@eig.unige.ch
dnl
define(_AC_LATEX_PACKAGE_INTERNE,[
ifelse($#,0,[],$#,1,[],$#,2,[],$#,3,[
AC_LATEX_PACKAGE($3,$2,$1)
],[
AC_LATEX_PACKAGE($3,$2,$1)
if test "$$1" = "yes";
then
$1=$3 ; export $1 ;
else
_AC_LATEX_PACKAGE_INTERNE($1,$2,m4_shift(m4_shift(m4_shift($@))))
fi;
])
])
AC_DEFUN(AC_LATEX_PACKAGES,[
_AC_LATEX_PACKAGE_INTERNE($3,$2,$1)
AC_SUBST($3)
])
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