Tools: create directories before cp into them

extras/tools/tools.mak

@@ -206,7 +206,8 @@ gas: gas-preprocessor-$(GAS_VERSION).tar.gz
 	$(MOVE)
 
 .gas: gas
-	cp gas/gas-preprocessor.pl build/bin/
+	mkdir -p $(PREFIX)/bin
+	cp gas/gas-preprocessor.pl $(PREFIX)/build/bin/
 	touch $@
 
 CLEAN_FILE += .gas
@@ -258,7 +259,8 @@ ant: apache-ant-$(ANT_VERSION).tar.bz2
 	$(MOVE)
 
 .ant: ant
-	(cp $</bin/* build/bin/; cp $</lib/* build/lib/)
+	mkdir -p $(PREFIX)/bin
+	(cp $</bin/* $(PREFIX)/bin/ && cp $</lib/* $(PREFIX)/lib/)
 	touch $@
 
 CLEAN_PKG += ant