+#
+# GENERIC
+#
+JVM := /usr/lib/jvm/jre-11/bin/java
+ECJ_JAR := /usr/share/java/ecj/ecj.jar
+BND_TOOL := /usr/bin/bnd
+
+WORKSPACE_BNDS := $(shell cd $(SDK_SRC_BASE) && find cnf -name '*.bnd')
+#BND_WORKSPACES := $(foreach bundle, $(BUNDLES), ./$(dir $(bundle)))
+BUILD_WORKSPACE_BNDS := $(WORKSPACE_BNDS:%=$(SDK_BUILD_BASE)/%) $(WORKSPACE_BNDS:%=$(SDK_BUILD_BASE)/eclipse/%) $(WORKSPACE_BNDS:%=$(SDK_BUILD_BASE)/rcp/%)
+
+cnf: $(BUILD_WORKSPACE_BNDS)
+
+A2_BUNDLES = $(BUNDLES:%=$(SDK_BUILD_BASE)/a2/$(A2_CATEGORY)/%.$(MAJOR).$(MINOR).jar)
+
+#JAVA_SRCS = $(shell find $(BUNDLE_PREFIX).* -name '*.java')
+JAVA_SRCS = $(foreach bundle, $(BUNDLES), $(shell find $(bundle) -name '*.java'))
+ECJ_SRCS = $(foreach bundle, $(BUNDLES), $(bundle)/src[-d $(BUILD_BASE)/$(bundle)/bin])
+
+osgi: cnf $(A2_BUNDLES)
+
+clean:
+ rm -rf $(BUILD_BASE)/*-compiled
+ rm -rf $(BUILD_BASE)/{cnf,a2}
+ rm -rf $(BUILD_BASE)/$(BUNDLE_PREFIX).* $(BUILD_BASE)/eclipse $(BUILD_BASE)/rcp
+ $(foreach dir, $(NATIVE_PROJECTS), $(MAKE) -C $(dir) clean;)
+
+# SDK level
+$(SDK_BUILD_BASE)/cnf/%.bnd: cnf/%.bnd
+ mkdir -p $(dir $@)
+ cp $< $@
+
+$(SDK_BUILD_BASE)/eclipse/cnf/%.bnd: cnf/%.bnd
+ mkdir -p $(dir $@)
+ cp $< $@
+
+$(SDK_BUILD_BASE)/rcp/cnf/%.bnd: cnf/%.bnd
+ mkdir -p $(dir $@)
+ cp $< $@
+
+$(SDK_BUILD_BASE)/a2/$(A2_CATEGORY)/%.$(MAJOR).$(MINOR).jar : $(BUILD_BASE)/%/bundle.jar
+ mkdir -p $(dir $@)
+ cp $< $@
+
+# Build level
+$(BUILD_BASE)/%/bundle.jar : %/bnd.bnd $(BUILD_BASE)/java-compiled
+ rsync -r --exclude "*.java" $(dir $<)src/ $(dir $@)bin
+ rsync -r $(dir $<)src/ $(dir $@)src
+ if [ -d "$(dir $<)OSGI-INF" ]; then rsync -r $(dir $<)OSGI-INF/ $(dir $@)/OSGI-INF; fi
+ cp $< $(dir $@)
+ cd $(dir $@) && $(BND_TOOL) build
+ mv $(dir $@)generated/*.jar $(dir $@)bundle.jar
+
+$(BUILD_BASE)/java-compiled : $(JAVA_SRCS)
+ $(JVM) -jar $(ECJ_JAR) -11 -nowarn -time -cp $(BUILD_CLASSPATH) \
+ $(ECJ_SRCS)
+ touch $@