diff --git a/Makefile b/Makefile
index 12acdd9..ee25ae1 100644
--- a/Makefile
+++ b/Makefile
@@ -5,14 +5,14 @@ STATIC := no
 DEBUG  := no
 
 SYG_SRC = sygcpp.cpp
-SYGCPP  = sygcpp
+SYGCPP  = build/sygcpp
 
 ifeq ($(DEBUG),yes)
 	CXXFLAGS := -g -Og
 	LDFLAGS := -Og
 else
-	CXXFLAGS := -Os
-	LDFLAGS := -s -Os
+	CXXFLAGS := -O3
+	LDFLAGS := -s -O3
 endif
 
 CXXFLAGS += -fPIC
@@ -37,6 +37,7 @@ all: mk_obj_dir $(SYGCPP)
 
 mk_obj_dir:
 	@mkdir -p obj/windows
+	@mkdir -p build
 
 clean:
 	$(RM) -r obj $(SYGCPP)