cmake related issue fixed github issue #344

Signed-off-by: jothikumar mani <jothikumar.mani@arm.com>
diff --git a/api-tests/CMakeLists.txt b/api-tests/CMakeLists.txt
index 1e65e5f..8c37460 100644
--- a/api-tests/CMakeLists.txt
+++ b/api-tests/CMakeLists.txt
@@ -590,7 +590,7 @@
         DOWNLOAD_COMMAND ""
         UPDATE_COMMAND ""
         PATCH_COMMAND ""
-        BUILD_COMMAND ""
+        BUILD_ALWAYS TRUE
         SOURCE_DIR "${PSA_ROOT_DIR}/tools/scripts/target_cfg"
 	CMAKE_ARGS -DPYTHON_EXECUTABLE=${PYTHON_EXECUTABLE}
 		-DOUT_DIR=${CMAKE_CURRENT_BINARY_DIR}