--- old/common/autoconf/build-performance.m4	2018-04-13 08:33:11.860799777 -0700
+++ new/common/autoconf/build-performance.m4	2018-04-13 08:33:11.774792071 -0700
@@ -169,8 +169,8 @@
   if test "x$enable_ccache" = xyes; then
     AC_MSG_RESULT([yes])
     OLD_PATH="$PATH"
-    if test "x$TOOLS_DIR" != x; then
-      PATH=$TOOLS_DIR:$PATH
+    if test "x$TOOLCHAIN_PATH" != x; then
+      PATH=$TOOLCHAIN_PATH:$PATH
     fi
     BASIC_REQUIRE_PROGS(CCACHE, ccache)
     CCACHE_STATUS="enabled"