1794 - stop redundantly recompiling on .mu changes

1 files changed, 6 insertions, 2 deletions

diff --git a/makefile b/makefile
index c1ed25ab..a8c000b5 100644
--- a/makefile
+++ b/makefile
@@ -1,13 +1,17 @@
+all: mu_bin core.mu
+
 mu_bin: makefile enumerate/enumerate tangle/tangle mu.cc termbox/libtermbox.a
 	c++ -g -O3 -Wall -Wextra -fno-strict-aliasing mu.cc termbox/libtermbox.a -o mu_bin
 
 # To see what the program looks like after all layers have been applied, read
 # mu.cc
-mu.cc: 0*
+mu.cc: 0*.cc
 	./tangle/tangle $$(./enumerate/enumerate --until 9999 |grep -v '.mu$$') > mu.cc
-	cat $$(./enumerate/enumerate --until 9999 |grep '.mu$$') > core.mu
 	make --no-print-directory autogenerated_lists
 
+core.mu: 0*.mu mu.cc
+	cat $$(./enumerate/enumerate --until 9999 |grep '.mu$$') > core.mu
+
 enumerate/enumerate:
 	cd enumerate && make && ./enumerate test