HDFFV-10845 use of TARGETFILE disables auto emulator

config/cmake_ext_mod/grepTest.cmake

@@ -43,7 +43,7 @@ if (EXISTS ${TEST_FOLDER}/${TEST_OUTPUT}.err)
   file (REMOVE ${TEST_FOLDER}/${TEST_OUTPUT}.err)
 endif ()
 
-message (STATUS "COMMAND: ${TEST_PROGRAM} ${TEST_ARGS}")
+message (STATUS "COMMAND: ${TEST_EMULATOR} ${TEST_PROGRAM} ${TEST_ARGS}")
 
 if (TEST_LIBRARY_DIRECTORY)
   if (WIN32 OR MINGW)
@@ -60,7 +60,7 @@ endif ()
 
 # run the test program, capture the stdout/stderr and the result var
 execute_process (
-    COMMAND ${TEST_PROGRAM} ${TEST_ARGS}
+    COMMAND ${TEST_EMULATOR} ${TEST_PROGRAM} ${TEST_ARGS}
     WORKING_DIRECTORY ${TEST_FOLDER}
     RESULT_VARIABLE TEST_RESULT
     OUTPUT_FILE ${TEST_OUTPUT}