Create separate directories for genetare.stamp

This avoid writing to the same generate.stamp while building UMF

Author: ghrunner

test/CMakeLists.txt

@@ -145,10 +145,18 @@ function(add_umf_test)
     set_tests_properties(${TEST_NAME} PROPERTIES LABELS "umf")
 
     if(WINDOWS)
-        # add PATH to DLL on Windows
-        set(DLL_PATH_LIST
-            "${DLL_PATH_LIST};PATH=path_list_append:${CMAKE_BINARY_DIR}/bin/;PATH=path_list_append:${CMAKE_BINARY_DIR}/bin/$<CONFIG>/"
-        )
+        set(TEST_CMAKEFILES_DIR
+            ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles_${ARG_NAME})
+        set(TEST_GENERATE_STAMP_FILE ${TEST_CMAKEFILES_DIR}/generate.stamp)
+
+        add_custom_command(
+            OUTPUT ${TEST_GENERATE_STAMP_FILE}
+            COMMAND ${CMAKE_COMMAND} -E touch ${TEST_GENERATE_STAMP_FILE})
+
+        # generate.stamp is generated before build
+        add_custom_target(${TEST_TARGET_NAME}_custom_stamp
+                          DEPENDS ${TEST_GENERATE_STAMP_FILE})
+        add_dependencies(${TEST_TARGET_NAME} ${TEST_TARGET_NAME}_custom_stamp)
 
         # append PATH to DLLs
         set_property(TEST ${TEST_NAME} PROPERTY ENVIRONMENT_MODIFICATION