--- configure.org	2016-04-19 18:47:42.000000000 +0200
+++ configure	2016-04-19 18:49:24.000000000 +0200
@@ -21792,6 +21792,10 @@
 
 BAT_DIR=
 if test x$support_bat = xyes; then
+   # by MacPorts patch
+   export QMAKE="$prefix/libexec/qt4/bin/qmake"
+   export PKG_CONFIG_PATH="$prefix/libexec/qt4/lib/pkgconfig"
+   # by MacPorts patch end
    abc=`$PKGCONFIG QtGui`
    pkg=$?
    if test $pkg = 0; then