diff --git a/script/init.sh b/script/init.sh
index 3dae258..448d2b4 100644
--- a/script/init.sh
+++ b/script/init.sh
@@ -48,6 +48,7 @@ fi
 
 export CFLAGS_FOR_TARGET=${CFLAGS_FOR_TARGET-"-O2 -g -ffunction-sections -fdata-sections"}
 export CXXFLAGS_FOR_TARGET=${CXXFLAGS_FOR_TARGET-"-O2 -g -ffunction-sections -fdata-sections"}
+export CFLAGS CXXFLAGS LDFLAGS
 
 # check if cp understands --preserve (for MacOS)
 if cp --preserve=mode,timestamps script/hello.c ./hello.c > /dev/null 2>&1; then