From a643618a0719f00eb9fcf90f69d0334f451feca5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= <essen@ninenines.eu>
Date: Tue, 29 Jan 2013 03:21:32 +0100
Subject: Makefile: only recompile files newer than the .app

---
 Makefile | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index 16ddee3..321b062 100644
--- a/Makefile
+++ b/Makefile
@@ -18,13 +18,15 @@ clean-all: clean clean-docs
 
 MODULES = $(shell ls src/*.erl | sed 's/src\///;s/\.erl/,/' | sed '$$s/.$$//')
 
-app:
-	@mkdir -p ebin/
+app: ebin/$(PROJECT).app
 	@cat src/$(PROJECT).app.src \
 		| sed 's/{modules, \[\]}/{modules, \[$(MODULES)\]}/' \
 		> ebin/$(PROJECT).app
+
+ebin/$(PROJECT).app: src/*.erl
+	@mkdir -p ebin/
 	erlc -v $(ERLC_OPTS) -o ebin/ -pa ebin/ \
-		src/$(PROJECT)_transport.erl src/*.erl
+		src/$(PROJECT)_transport.erl $?
 
 clean:
 	rm -rf ebin/
-- 
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