diff --git a/sdk/vst/pkg.mk b/sdk/vst/pkg.mk
index 81550a0..aadddaa 100644
--- a/sdk/vst/pkg.mk
+++ b/sdk/vst/pkg.mk
@@ -1,5 +1,5 @@
 BUILD_DIR := ./build/${CONFIG}
-PKG_ROOT=./${PKG_VER}
+PKG_ROOT := ./${PKG_VER}
 OBJS := $(addprefix ${BUILD_DIR}/, $(subst .cpp,.o,$(SRCS)))
 
 .PHONY: ${PKG_VER}.patch	
@@ -8,8 +8,9 @@ prepare: ${PKG_ROOT}
 patch: ${PKG_VER}.patch
 
 ${PKG_VER}.patch:
+	@rm -rf temp
 	@unzip ${PKG_VER}.zip -d temp >/dev/null
-	@diff -r ${PKG_VER} temp/${PKG_VER} > ${PKG_VER}.patch
+	@diff -ruN temp/${PKG_VER}/ ${PKG_ROOT} > ${PKG_VER}.patch; [ $$? -eq 1 ]
 	@rm -rf temp
 	@echo "Created" ${PKG_VER}.patch
 
@@ -17,14 +18,18 @@ CXXFLAGS += -std=c++11
 CXXFLAGS_debug := ${CXXFLAGS} -O0 -g
 CXXFLAGS_release := ${CXXFLAGS} -O2
 	
-INCLUDES := -I./ -I/usr/include/freetype2
+INCLUDES += -I./ -I/usr/include/freetype2
+DEFINES += -D${TARGET}
 
-${OBJS}: $(BUILD_DIR)/%.o : ${PKG_VER}/%.cpp
+${OBJS}: $(BUILD_DIR)/%.o : ${PKG_ROOT}/%.cpp
 	mkdir -p $(dir $@)
 	g++ ${CXXFLAGS_${CONFIG}} ${DEFINES} ${INCLUDES} -o $@ -c $<
 
 ${PKG_ROOT}:
 	unzip ${PKG_VER}.zip
+	if [ -e ${PKG_VER}.patch ]; then \
+	   patch -p0 < ${PKG_VER}.patch;\
+	fi
 
 clean:
 	rm -rf ${BUILD_DIR}/*