diff --git a/env.bash b/env.bash
new file mode 100644
index 0000000..7837b2c
--- /dev/null
+++ b/env.bash
@@ -0,0 +1,18 @@
+# This script adds toolchains built by doit to $PATH. It should sourced from within bash like:
+# . path/to/env.sh
+
+OS=`uname`
+HOSTARCH=`uname -m`
+DIR=`dirname "$BASH_SOURCE"`
+SELF=`basename "$BASH_SOURCE"`
+
+if [ "${BASH_SOURCE[0]}" = "${0}" ]; then
+    echo "$SELF must be sourced, not executed"
+    exit 1
+fi
+
+for p in `find $DIR -type d -wholename "$DIR/*-$OS-$HOSTARCH/bin"`;
+do
+    echo "added $p";
+    export PATH=$p:$PATH;
+done