Fix library autodetection

1 files changed, 40 insertions, 47 deletions

diff --git a/acinclude.m4 b/acinclude.m4
index eb82717..8a5368f 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -1,34 +1,17 @@
-dnl This file is part of GSC
-dnl Copyright (C) 2007 Sergey Poznyakoff
-dnl
-dnl GSC is free software; you can redistribute it and/or modify
-dnl it under the terms of the GNU General Public License as published by
-dnl the Free Software Foundation; either version 3, or (at your option)
-dnl any later version.
-dnl
-dnl GSC is distributed in the hope that it will be useful,
-dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
-dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-dnl GNU General Public License for more details.
-dnl
-dnl You should have received a copy of the GNU General Public License
-dnl along with GSC.  If not, see <http://www.gnu.org/licenses/>.
-
-dnl MU_RESULT_ACTIONS -- generate shell code for the result of a test
-dnl   $1 -- CVAR  -- cache variable to check
-dnl   $2 -- NAME  -- if not empty, used to generate a default value TRUE:
-dnl                  `AC_DEFINE(HAVE_NAME)'
-dnl   $2 -- TRUE  -- what to do if the CVAR is not `no'
-dnl   $3 -- FALSE -- what to do otherwise; defaults to `:'
-dnl
-AC_DEFUN([MU_RESULT_ACTIONS], [
-[if test "$$1" != "" -a "$$1" != no; then
-  ]ifelse([$3], ,
-          [AC_DEFINE(HAVE_]translit($2, [a-z ./<>], [A-Z___])[,1,[FIXME])],
-          [$3])[
-else
-  ]ifelse([$4], , [:], [$4])[
-fi]])dnl
+# Copyright (C) 2001, 2006, 2008, 2009 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
@@ -37,21 +20,31 @@ 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   $6     --    Directories where the library may reside
-AC_DEFUN([MU_CHECK_LIB],
-[
-  save_LIBS=$LIBS
-  AC_CACHE_CHECK([for -l$1], mu_cv_lib_$1,
-  [
-   for path in $6
+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 "" $6
  do
-      LIBS="$save_LIBS -L$path"
-      unset ac_cv_lib_$1_$2
-      AC_CHECK_LIB($1, $2,
-                   [mu_cv_lib_$1="$3 -L$path -l$1"
-                    break],
-                   [mu_cv_lib_$1=no],$3)
+   if test -n "$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		  
-  ])
-  MU_RESULT_ACTIONS([mu_cv_lib_$1],[LIB$1],[$4],[$5])
-  LIBS=$save_LIBS
-])
+ 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
+
+