Enable parallel LTO linking.

1 files changed, 4 insertions, 4 deletions

diff --git a/Makefile b/Makefile
index fb096da..e51b18c 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ BUILD := build
 override PACKAGES := fmt
 
 WARNINGS := -Wall -Werror
-OPTIMIZE := -Og -flto
+OPTIMIZE := -Og -flto=auto -fuse-linker-plugin
 DEBUG := -g
 
 CXX := g++
@@ -70,10 +70,10 @@ $(BUILD)/%.o: $(BUILD)/%.bin
 
 $(BUILD)/%.o: %.cpp
         @mkdir -p $(dir $@)
-        $(CXX) $(CXXFLAGS) $(COMPILE_FLAGS) -c -o $@ $<
+        +$(CXX) $(CXXFLAGS) $(COMPILE_FLAGS) -c -o $@ $<
 
 $(BUILD)/%.o: $(BUILD)/%.cpp
-        $(CXX) $(CXXFLAGS) $(COMPILE_FLAGS) -c -o $@ $<
+        +$(CXX) $(CXXFLAGS) $(COMPILE_FLAGS) -c -o $@ $<
 
 $(BUILD)/programs/programs.cpp:
         @mkdir -p $(dir $@)
@@ -81,4 +81,4 @@ $(BUILD)/programs/programs.cpp:
 
 $(BUILD)/minigolf: $(OBJECTS)
         @mkdir -p $(dir $@)
-        $(CXX) $(CXXFLAGS) -o $@ -Wl,--start-group $+ -Wl,--end-group $(LINK_FLAGS)
+        +$(CXX) $(CXXFLAGS) -o $@ -Wl,--start-group $+ -Wl,--end-group $(LINK_FLAGS)