use the plugindir pc variable from MC

The whole point of this variable is to give us the path where plugins are
supposed to be installed. We should just use it instead of re-implementing it
assuming the location.

diff --git a/configure.ac b/configure.ac
index b0a4b80c8044660c07d283670cbcdbaa9b0fc835..9c127ed8b2907c1cb5456c9eb0dca858262214e1 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -591,7 +591,7 @@ AM_CONDITIONAL(HAVE_UOA, test "x$have_uoa" = "xyes")
 
 if test "x$have_uoa" = "xyes" -o "x$have_goa" = "xyes"; then
    AC_MSG_CHECKING([Mission Control plugins dir])
-   MISSION_CONTROL_PLUGINS_DIR=${libdir}/mission-control-plugins.`pkg-config --variable=MCP_ABI_VERSION mission-control-plugins`
+   MISSION_CONTROL_PLUGINS_DIR=`pkg-config --define-variable=libdir='${libdir}' --variable=plugindir mission-control-plugins`
 
    AC_MSG_RESULT([$MISSION_CONTROL_PLUGINS_DIR])
    AC_SUBST(MISSION_CONTROL_PLUGINS_DIR)