From ab0cac72c39ff7cd9340053f03021d7bd4f3be52 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Th=C3=A9ophile=20Bastian?= <contact@tobast.fr>
Date: Tue, 13 Feb 2018 15:08:04 +0100
Subject: [PATCH] Make Makefile not recompile everything

---
 Makefile | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index 21818ce..1fc481a 100644
--- a/Makefile
+++ b/Makefile
@@ -24,17 +24,17 @@ all: $(TARGETS:=.bin)
 %.bin: main_%.o $(OBJS)
 	$(CXX) $(CXXFLAGS) $(CXXLIBS) $(OBJS) $< -o $@
 
-_gen/marching_cubes_data.cpp: tools/gen_marching_cubes_conf.py _gen
+_gen/marching_cubes_data.cpp: tools/gen_marching_cubes_conf.py
+	mkdir -p _gen
 	python3 $< > $@
 
 %.o: %.cpp
 	$(CXX) $(CXXFLAGS) -c $< -o $@
 
-_gen:
-	mkdir -p _gen
-
 ############################################################
 
+.PRECIOUS: %.o
+
 .PHONY: clean
 
 clean: