Merge pull request #479 from jmglov/makefile-externals

Makefile : do not fetch externals when present

Author: thomasmulvaney

.gitignore

@@ -1,5 +1,5 @@
 *.pyc
-externals
+externals*
 pixie-vm
 .idea
 lib

Makefile

@@ -47,12 +47,13 @@ build_preload_no_jit: fetch_externals
 build: fetch_externals
 	$(PYTHON) $(EXTERNALS)/pypy/rpython/bin/rpython $(COMMON_BUILD_OPTS) $(JIT_OPTS) $(TARGET_OPTS)
 
-fetch_externals: $(EXTERNALS)/pypy ./lib
+fetch_externals: $(EXTERNALS)/pypy externals.fetched
 
-lib:
+externals.fetched:
 	echo https://github.com/pixie-lang/external-deps/releases/download/1.0/`uname -s`-`uname -m`.tar.bz2
 	curl -L https://github.com/pixie-lang/external-deps/releases/download/1.0/`uname -s`-`uname -m`.tar.bz2 > /tmp/externals.tar.bz2
 	tar -jxf /tmp/externals.tar.bz2 --strip-components=2
+	touch externals.fetched
 
 
 $(EXTERNALS)/pypy:
@@ -92,6 +93,6 @@ clean_pxic:
 clean: clean_pxic
 	rm -rf ./lib
 	rm -rf ./include
-	rm -rf ./externals
+	rm -rf ./externals*
 	rm -f ./pixie-vm
 	rm -f ./*.pyc