cmake: move cmake_minimum_required() #543
Merged
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Moving cmake_minimum_required() at the top of
CMakeLists.txt is required dew to warnings coming
from CMake when building CSP under different
build environment (such as CYGWIN).
From cmake_minimum_required() docs:
'Call the cmake_minimum_required() command at the
beginning of the top-level CMakeLists.txt file even before calling the project() command.'