diff --git a/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/profile.bashrc b/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/profile.bashrc
index 3e4b812f6e..bbf8d895b9 100644
--- a/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/profile.bashrc
+++ b/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/profile.bashrc
@@ -99,3 +99,10 @@ SYSROOT_WRAPPERS_BIN="/usr/lib/sysroot-wrappers/bin"
 if [[ "$PATH" != *"$SYSROOT_WRAPPERS_BIN"* ]]; then
     export PATH="$SYSROOT_WRAPPERS_BIN:$PATH"
 fi
+
+# Improve the chance that ccache is valid across versions by making all
+# paths under $S relative to $S, avoiding encoding the package version
+# contained in the path into __FILE__ expansions and debug info.
+if [[ -z "${CCACHE_BASEDIR}" ]] && [[ -d "${S}" ]]; then
+    export CCACHE_BASEDIR="${S}"
+fi