[libwnck] configure.ac: redefine introspection dirs using proper prefixes

[Marco Trevisan <marcotrevi src gnome org>]

commit e03e81374cd516512ea505c49d6f4b20fe9e1395
Author: Marco Trevisan (Treviño) <mail 3v1n0 net>
Date:   Fri Feb 5 17:52:27 2016 +0100

    configure.ac: redefine introspection dirs using proper prefixes
    
    https://bugzilla.gnome.org/show_bug.cgi?id=761597

 configure.ac |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 3269730..3004859 100644
--- a/configure.ac
+++ b/configure.ac
@@ -171,6 +171,16 @@ GTK_DOC_CHECK([1.9])
 
 GOBJECT_INTROSPECTION_CHECK([0.6.14])
 
+if test "$enable_introspection" = "yes"; then
+  # Redefine introspection dirs using proper prefixes
+
+  INTROSPECTION_GIRDIR=`$PKG_CONFIG --define-variable=datadir=${datadir} --variable=girdir 
gobject-introspection-1.0`
+  AC_SUBST(INTROSPECTION_GIRDIR)
+
+  INTROSPECTION_TYPELIBDIR=`$PKG_CONFIG --define-variable=libdir=${libdir} --variable=typelibdir 
gobject-introspection-1.0`
+  AC_SUBST(INTROSPECTION_TYPELIBDIR)
+fi
+
 AC_OUTPUT([
 Makefile
 doc/Makefile