diff --git a/.gitignore b/.gitignore
index a50aa65a5b..cada4e03d5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,9 +19,6 @@
 /repos/dde_rump/include/rump
 /repos/libports/contrib
 /repos/libports/download
-/repos/libports/src/lib/qt5/qtjsbackend
-/repos/libports/src/lib/qt5/qtwebkit/Source/JavaScriptCore
-/repos/libports/src/lib/qt5/qtwebkit/Source/WebCore/generated
 /repos/ports-foc/contrib
 /repos/ports-okl4/contrib
 /repos/ports-okl4/download
diff --git a/repos/libports/lib/mk/qt5.inc b/repos/libports/lib/mk/qt5.inc
index 6eb0d4c551..c77cc9e031 100644
--- a/repos/libports/lib/mk/qt5.inc
+++ b/repos/libports/lib/mk/qt5.inc
@@ -14,7 +14,9 @@ $(addsuffix .o,$(basename $(SRC_CC))): $(COMPILER_MOC_SOURCE_MAKE_ALL_FILES_FILT
 QT5_INC_DIR += $(REP_DIR)/src/lib/qt5/qtbase/src/corelib/global
 
 QT5_INC_DIR += $(addprefix $(REP_DIR)/src/lib/qt5/, $(QT_INCPATH))
+QT5_INC_DIR += $(addprefix $(QT5_PORT_DIR)/src/lib/qt5/, $(QT_INCPATH))
 QT5_INC_DIR += $(addprefix $(QT5_CONTRIB_DIR)/, $(QT_INCPATH))
 
 vpath % $(addprefix $(REP_DIR)/src/lib/qt5/, $(QT_VPATH))
+vpath % $(addprefix $(QT5_PORT_DIR)/src/lib/qt5/, $(QT_VPATH))
 vpath % $(addprefix $(QT5_CONTRIB_DIR)/, $(QT_VPATH))
diff --git a/repos/libports/lib/mk/qt5_jscore.mk b/repos/libports/lib/mk/qt5_jscore.mk
index 9867e6262f..aea6cc889b 100644
--- a/repos/libports/lib/mk/qt5_jscore.mk
+++ b/repos/libports/lib/mk/qt5_jscore.mk
@@ -18,11 +18,11 @@ CC_WARN =
 # that's why they can be quite long
 #
 
-all: $(REP_DIR)/src/lib/qt5/qtwebkit/Source/JavaScriptCore/generated/generated.tag
+all: $(QT5_PORT_DIR)/src/lib/qt5/qtwebkit/Source/JavaScriptCore/generated/generated.tag
 
 JAVASCRIPTCORE_DIR = $(QT5_CONTRIB_DIR)/qtwebkit/Source/JavaScriptCore
 
-$(REP_DIR)/src/lib/qt5/qtwebkit/Source/JavaScriptCore/generated/generated.tag:
+$(QT5_PORT_DIR)/src/lib/qt5/qtwebkit/Source/JavaScriptCore/generated/generated.tag:
 
 	$(VERBOSE)mkdir -p $(dir $@)
 
diff --git a/repos/libports/lib/mk/qt5_v8.mk b/repos/libports/lib/mk/qt5_v8.mk
index dde2450175..a2c3004312 100644
--- a/repos/libports/lib/mk/qt5_v8.mk
+++ b/repos/libports/lib/mk/qt5_v8.mk
@@ -6,11 +6,11 @@ SHARED_LIB = yes
 # Generated files
 #
 
-all: $(REP_DIR)/src/lib/qt5/qtjsbackend/generated/generated.tag
+all: $(QT5_PORT_DIR)/src/lib/qt5/qtjsbackend/generated/generated.tag
 
 V8_DIR = $(QT5_CONTRIB_DIR)/qtjsbackend/src/v8/../3rdparty/v8
 
-$(REP_DIR)/src/lib/qt5/qtjsbackend/generated/generated.tag:
+$(QT5_PORT_DIR)/src/lib/qt5/qtjsbackend/generated/generated.tag:
 	$(VERBOSE)mkdir -p $(dir $@)
 	$(VERBOSE)python $(V8_DIR)/tools/js2c.py $(dir $@)/experimental-libraries.cpp EXPERIMENTAL off $(V8_DIR)/src/macros.py $(V8_DIR)/src/proxy.js
 	$(VERBOSE)python $(V8_DIR)/tools/js2c.py $(dir $@)/libraries.cpp CORE off $(V8_DIR)/src/macros.py $(V8_DIR)/src/runtime.js $(V8_DIR)/src/v8natives.js $(V8_DIR)/src/array.js $(V8_DIR)/src/string.js $(V8_DIR)/src/uri.js $(V8_DIR)/src/math.js $(V8_DIR)/src/messages.js $(V8_DIR)/src/apinatives.js $(V8_DIR)/src/date.js $(V8_DIR)/src/regexp.js $(V8_DIR)/src/json.js $(V8_DIR)/src/liveedit-debugger.js $(V8_DIR)/src/mirror-debugger.js $(V8_DIR)/src/debug-debugger.js
diff --git a/repos/libports/lib/mk/qt5_webcore.mk b/repos/libports/lib/mk/qt5_webcore.mk
index bcaaf6f77a..97def54cff 100644
--- a/repos/libports/lib/mk/qt5_webcore.mk
+++ b/repos/libports/lib/mk/qt5_webcore.mk
@@ -23,7 +23,7 @@ QT_INCPATH := qtwebkit/Source/WebCore/dom
 # that's why they can be quite long
 #
 
-all: $(REP_DIR)/src/lib/qt5/qtwebkit/Source/WebCore/generated/generated.tag
+all: $(QT5_PORT_DIR)/src/lib/qt5/qtwebkit/Source/WebCore/generated/generated.tag
 
 # command names used by some of the extracted generator commands
 DEL_FILE := rm
@@ -38,14 +38,14 @@ WEBCORE_DIR = $(QT5_CONTRIB_DIR)/qtwebkit/Source/WebCore
 # make the 'HOST_TOOLS' variable known
 include $(REP_DIR)/lib/mk/qt5_host_tools.mk
 
-$(REP_DIR)/src/lib/qt5/qtwebkit/Source/WebCore/generated/generated.tag: $(HOST_TOOLS)
+$(QT5_PORT_DIR)/src/lib/qt5/qtwebkit/Source/WebCore/generated/generated.tag: $(HOST_TOOLS)
 
 	$(VERBOSE)mkdir -p $(dir $@)
 
 	$(VERBOSE)bison -d -p xpathyy $(WEBCORE_DIR)/xml/XPathGrammar.y -o $(dir $@)/XPathGrammar.tab.c && $(MOVE) $(dir $@)/XPathGrammar.tab.c $(dir $@)/XPathGrammar.cpp && $(MOVE) $(dir $@)/XPathGrammar.tab.h $(dir $@)/XPathGrammar.h
 
 	@# preprocess-idls.pl
-	$(VERBOSE)sed -e "s,^,$(QT5_CONTRIB_DIR)/,g" $(dir $@)/../idl_files > $(dir $@)/idl_files.tmp
+	$(VERBOSE)sed -e "s,^,$(QT5_CONTRIB_DIR)/,g" $(REP_DIR)/src/lib/qt5/qtwebkit/Source/WebCore/idl_files > $(dir $@)/idl_files.tmp
 	$(VERBOSE)touch $(dir $@)/supplemental_dependency.tmp 
 	$(VERBOSE)export "QT5_CONTRIB_DIR=$(QT5_CONTRIB_DIR)" && perl -I$(WEBCORE_DIR)/bindings/scripts $(WEBCORE_DIR)/bindings/scripts/preprocess-idls.pl --defines $(DEFINES) --idlFilesList $(dir $@)/idl_files.tmp --supplementalDependencyFile $(dir $@)/supplemental_dependency.tmp --idlAttributesFile $(WEBCORE_DIR)/bindings/scripts/IDLAttributes.txt --preprocessor "$(MOC) -E"