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# Copyright (C) 2001, 2006, 2008, 2009, 2010 Sergey Poznyakoff
#
# 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 3, 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, see <http://www.gnu.org/licenses/>.
dnl Arguments:
dnl $1 -- Library to look for
dnl $2 -- Function to check in the library
dnl $3 -- Any additional libraries that might be needed
dnl $4 -- Action to be taken when test succeeds
dnl $5 -- Action to be taken when test fails
dnl $6 -- Directories where the library may reside
AC_DEFUN([WD_CHECK_LIB],
[m4_ifval([$4], , [AH_CHECK_LIB([$1])])dnl
AS_VAR_PUSHDEF([wd_Lib], [wd_cv_lib_$1])dnl
AC_CACHE_CHECK([for $2 in -l$1], [wd_Lib],
[AS_VAR_SET([wd_Lib], [no])
wd_check_lib_save_LIBS=$LIBS
for path in "" $6
do
if test -n "$path"; then
wd_ldflags="-L$path -l$1 $3"
else
wd_ldflags="-l$1 $3"
fi
LIBS="$wd_ldflags $wd_check_lib_save_LIBS"
AC_LINK_IFELSE([AC_LANG_CALL([], [$2])],
[AS_VAR_SET([wd_Lib], ["$wd_ldflags"])
break])
done
LIBS=$wd_check_lib_save_LIBS])
AS_IF([test "AS_VAR_GET([wd_Lib])" != no],
[m4_default([$4], [AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_LIB$1))
LIBS="-l$1 $LIBS"
])],
[$5])dnl
AS_VAR_POPDEF([wd_Lib])dnl
])# WD_CHECK_LIB
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