[CMake] FindBoost

[Nadir SOUALEM]

Hi !!!
Is there a way to avoid using TOUPPER

SET(BOOST_ROOT $ENV{WORK}/../build/boost_1_34_1)
SET(Boost_USE_MULTITHREAD ON)
FIND_PACKAGE(Boost 1.34.1 COMPONENTS date_time filesystem)
    STRING(TOUPPER ${CMAKE_BUILD_TYPE} UPPER_CMAKE_BUILD_TYPE)
Message (lib= ${Boost_DATE_TIME_LIBRARY_${UPPER_CMAKE_BUILD_TYPE}} )



I would like for example to use in debug mode, but 
CMAKE_BUILD_TYPE=Debug(documentation) not DEBUG
and FindBoost use DEBUG (upperCase)  (DEBUG different of Debug in Unix case)


Thank You

-- 
Nadir SOUALEM