diff --git a/CtsBuild.mk b/CtsBuild.mk
index 4521b7e..86ecde8 100644
--- a/CtsBuild.mk
+++ b/CtsBuild.mk
@@ -33,6 +33,9 @@
 # File indicating which tests should be blacklisted due to unsupported abi.
 CTS_UNSUPPORTED_ABIS := cts/tests/expectations/unsupportedabis.txt
 
+# Holds the target architecture to build for.
+CTS_TARGET_ARCH := $(TARGET_ARCH)
+
 # Functions to get the paths of the build outputs.
 
 define cts-get-lib-paths