[CMake] find_file() fails for specific file in C:/Windows/System32 - Why?

[Scott Fowler]

I'm using the 'fixup_bundle' capability for generating my installation package, but GetPrerequisites fails for a specific file, which is in C:/Windows/System32.  Other files in C:/Windows/System32 are found just fine.  I've detected that the problem is specifically with the find_file() call.

# Example Code that illustrates the problem
set (myfiles
    kernel32.dll
    mpich2mpi.dll
    testfile.txt  #dummy file I added to System32 for testing purposes.
    )
set (dirs
    "C:/Windows/System32"
    "C:/TEMP"
    )
foreach(file ${myfiles})
  set(rt "rt-NOTFOUND")
  find_file(rt "${file}" ${dirs} NO_DEFAULT_PATH)
  MESSAGE(STATUS "FILE: ${file}; RT: ${rt}")
endforeach(file)

Ouput:
FILE: kernel32.dll; RT: C:/Windows/System32/kernel32.dll
FILE: mpich2mpi.dll; RT: rt-NOTFOUND
FILE: testfile.txt; RT: rt-NOTFOUND

If I copy mpich2mpi.dll and testfile.txt to C:/TEMP, the find_file() call will find the files in C:/TEMP.

So my question is why does find_file NOT find mpich2mpi.dll in System32, but it can find it in C:/TEMP.  Does find_file treat the System32 directory special somehow?  Is there a recommended work around to this issue?

Thanks,
Scott

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