diff --git a/haversine_02/build b/haversine_02/build
index 8e1e5c1..cd3a103 100755
--- a/haversine_02/build
+++ b/haversine_02/build
@@ -1,3 +1,3 @@
 #!/bin/bash
 
-bear -- ./compile
+bear -- ./compile $@
diff --git a/haversine_02/compile b/haversine_02/compile
index 6797c51..ea30aac 100644
--- a/haversine_02/compile
+++ b/haversine_02/compile
@@ -2,7 +2,13 @@
 
 CC=clang
 CXX=clang++
-CFLAGS="-g -Wall -Wextra -Iinclude"
+CFLAGS="-Wall -Wextra -Iinclude "
+
+if [[ "$1" == "release" ]]; then
+	CFLAGS+="-O3"
+else
+	CFLAGS+="-g"
+fi
 
 # generator
 GENSRC="./src/generator/gen_argparser.cpp ./src/generator/generator.cpp ./src/haversine.cpp ./src/point_types.cpp ./src/generator/main.cpp"