add rtc-dist

Makefile

@@ -33,6 +33,9 @@ RTC_STAMP_REPO = $(WEBRTC_DIR)/webrtc-checkout/.stamp
 RTC_STAMP_VERSION = $(WEBRTC_DIR)/webrtc-checkout/.stamps/stamp-$(WEBRTC_VERSION)
 RTC_STAMP_COMPILE = $(WEBRTC_DIR)/webrtc-checkout/src/out/$(WEBRTC_OUT)/.stamp
 RTC_STAMP_INCLUDES = $(WEBRTC_DIR)/include/webrtc/.stamp
+RTC_STAMP_ALL = \
+	$(RTC_STAMP_DEPOT) $(RTC_STAMP_REPO) $(RTC_STAMP_VERSION) \
+	$(RTC_STAMP_COMPILE) $(RTC_STAMP_INCLUDES)
 
 .PHONY: rtcall
 rtc-all: \
@@ -84,6 +87,17 @@ $(WEBRTC_DIR)/lib/%.a: $(WEBRTC_DIR)/webrtc-checkout/src/out/$(WEBRTC_OUT)/obj/%
 	@mkdir -p $(@D)
 	cp $< $@
 
+# Create distribution
+WEBRTC_DIST_LIBS ?= libwebrtc.a $(WEBRTC_DIST_LIBS_EXTRA)
+$(WEBRTC_DIR)/dist.tar.gz: $(patsubst %,$(WEBRTC_DIR)/lib/%,$(WEBRTC_DIST_LIBS)) $(RTC_STAMP_ALL)
+	rm -f $@
+	cd $(WEBRTC_DIR) && tar czf $(notdir $@) \
+		include $(patsubst %,lib/%,$(WEBRTC_DIST_LIBS)) \
+		$(patsubst $(WEBRTC_DIR)/%,%,$(RTC_STAMP_ALL))
+
+.PHONY: rtc-dist
+rtc-dist: $(WEBRTC_DIR)/dist.tar.gz
+
 .PHONY: rtc-clean
 rtc-clean:
 	rm -rf $(WEBRTC_DIR)/include/webrtc $(WEBRTC_DIR)/lib