. ../test-lib.sh
+# Variables from test-lib that are normally internal to the tests; we
+# need to export them for test_perf subshells
+export TEST_DIRECTORY TRASH_DIRECTORY GIT_BUILD_DIR GIT_TEST_CMP
+
perf_results_dir=$TEST_OUTPUT_DIRECTORY/test-results
mkdir -p "$perf_results_dir"
rm -f "$perf_results_dir"/$(basename "$0" .sh).subtests