Index: build/autogen.sh
==================================================================
--- build/autogen.sh
+++ build/autogen.sh
@@ -1,6 +1,6 @@
-#! /bin/bash
+#! /usr/bin/env bash
 
 # Download latest copy of autoconf macros
 (
 	mkdir aclocal >/dev/null 2>/dev/null
 	cd aclocal || exit 1

Index: build/pre.sh
==================================================================
--- build/pre.sh
+++ build/pre.sh
@@ -1,6 +1,6 @@
-#! /bin/bash
+#! /usr/bin/env bash
 
 cd "$(dirname "$(which "$0")")/.." || exit 1
 
 # Generate configure script
 ./build/autogen.sh