hack/make/test-integration-cli: introduce MAKEDIR variable

- every execution of dirname costs time
- less repeating

Signed-off-by: Jörg Thalheim <joerg@higgsboson.tk>
Upstream-commit: 6533cb973f6bab672018148fd6a67644580cc61f
Component: engine

components/engine/hack/make/test-unit

@@ -39,12 +39,12 @@ bundle_test_unit() {
 				mkdir -p "$HOME/.parallel"
 				touch "$HOME/.parallel/ignored_vars"
 
-				echo "$TESTDIRS" | parallel --jobs "$PARALLEL_JOBS" --env _ "$(dirname "$BASH_SOURCE")/.go-compile-test-dir"
+				echo "$TESTDIRS" | parallel --jobs "$PARALLEL_JOBS" --env _ "${MAKEDIR}/.go-compile-test-dir"
 				rm -rf "$HOME"
 			else
 				# aww, no "parallel" available - fall back to boring
 				for test_dir in $TESTDIRS; do
-					"$(dirname "$BASH_SOURCE")/.go-compile-test-dir" "$test_dir" || true
+					"${MAKEDIR}/.go-compile-test-dir" "$test_dir" || true
 					# don't let one directory that fails to build tank _all_ our tests!
 				done
 			fi