diff -up libproxy-0.3.1/configure.ac.kde4 libproxy-0.3.1/configure.ac
--- libproxy-0.3.1/configure.ac.kde4	2009-10-05 20:42:34.000000000 +0200
+++ libproxy-0.3.1/configure.ac	2010-02-22 00:12:30.690720150 +0100
@@ -23,8 +23,6 @@ AC_CHECK_FUNCS(pthread_mutex_init)
 AC_SEARCH_LIBS([socket],[socket inet])
 AC_SEARCH_LIBS([dlopen],[dl])
 
-AC_CHECK_LIB([kdecore], [main], have_kdecore=yes, have_kdecore=no)
-
 ### Checks for module dependencies.
 AC_PATH_PROG(GCONFTOOLBIN, gconftool-2)
 PKG_CHECK_MODULES(x11, x11, have_x11=yes, have_x11=no)
@@ -38,6 +36,8 @@ PKG_CHECK_MODULES(NetworkManager, Networ
 					have_networkmanager=yes, have_networkmanager=no)
 PKG_CHECK_MODULES(QtCore, QtCore, have_qtcore=yes, have_qtcore=no)
 
+AC_CHECK_LIB([kdecore], [main], have_kdecore=yes, have_kdecore=yes)
+
 # Direct
 AC_ARG_WITH([direct],
             [AS_HELP_STRING([--with-direct],
@@ -96,8 +96,8 @@ AC_ARG_WITH([kde4],
 if test x$with_kde4 = xyes; then
 	if test x$have_qtcore  = xyes && \
 	   test x$have_kdecore = xyes; then
-		KDE4_CFLAGS="$QtCore_CFLAGS"
-		KDE4_LIBS="$QtCore_LIBS -lkdecore"
+		KDE4_CFLAGS="$KDE4_CFLAGS $QtCore_CFLAGS"
+		KDE4_LIBS="$KDE4_LIBS -lkdecore $QtCore_LIBS"
 		AC_SUBST(KDE4_CFLAGS)
 		AC_SUBST(KDE4_LIBS)
 	else