[Cmake] FW: contruction of variable names

[Dekeyser, Kris]

I'm trying this code with CMake 2.0.3:

# project's name
SET(ThisProject "LMSCft")

#--- exported header files
INCLUDE_DIRECTORIES(${${ThisProject}_SOURCE_DIR}/export/include)

But the include directory is "_SOURCE_DIR}/export/include" in the MSDev
project file. 
I expected to have "<Source dir of the LMSCft project>/export/include". It
seems as if
the first ${ gets "eaten" by the rest. What did I do wrong?

BTW, in the CMake book (version 1.8) on page 33, the example says:

IF( ${${tfile}}_TEST_RESULT} MATCHES FAILED)
[...]

Notice the unbalanced } due to the double } after tfile. Is that a typo? 
I tried the same in my code, but ended up with
"}_SOURCE_DIR}/export/include". Not correct either.

- Kris
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