[gegl-qt] Build: Prepend to PKG_CONFIG_PATH, don't override

[Jon Nordby <jonnor src gnome org>]

commit ef8965f06b1fd2ba3adee7e7be9b5c82aae70fe1
Author: Jon Nordby <jononor gmail com>
Date:   Wed Sep 28 00:45:00 2011 +0200

    Build: Prepend to PKG_CONFIG_PATH, don't override

 gegl-qt.pro |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gegl-qt.pro b/gegl-qt.pro
index b6b773d..c76d789 100644
--- a/gegl-qt.pro
+++ b/gegl-qt.pro
@@ -73,8 +73,9 @@ intcheck.commands += mkdir -p $$OUT_PWD/intcheck-build;
 intcheck.commands += cd $$OUT_PWD/intcheck-build;
 intcheck.commands += tar -xf $$TARBALL_PATH;
 intcheck.commands += cd $$DIST_NAME;
+PKG_CONFIG_PATH = $$system(echo $PKG_CONFIG_PATH)
 intcheck.commands += \
-    PKG_CONFIG_PATH=$$CHECK_INSTALL_PREFIX/lib/pkgconfig \
+    PKG_CONFIG_PATH=$$CHECK_INSTALL_PREFIX/lib/pkgconfig:$$PKG_CONFIG_PATH \
     qmake -r GEGLQT_INTEGRATION_CHECK=yes;
 intcheck.commands += make -j4;
 intcheck.commands += make check;