diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..b288357
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+export CC=gcc
diff --git a/build.sh b/build.sh
index 15d3fd5..d0ccad8 100755
--- a/build.sh
+++ b/build.sh
@@ -1,4 +1,3 @@
 #! /usr/bin/env bash
-
-gcc $(pkg-config --cflags --libs x11 x11-xcb xcb gl xcb-glx) $1
+$CC $(pkg-config --cflags --libs x11 x11-xcb xcb gl glu xcb-glx) $1