[bugfix,2.6] Fix CMake with deactivated compiler version check
Make CMake work with disabled version check.
Before this commit setting DISABLE_CXX_VERSION_CHECK to true resulted
in the CMake error:
CMake Error at cmake/modules/CheckCXXFeatures.cmake:110 (if):
if given arguments:
"14" "GREATER"
Unknown arguments specified
Call Stack (most recent call first):
cmake/modules/CheckCXXFeatures.cmake:199 (dune_require_cxx_standard)
cmake/modules/DuneMacros.cmake:690 (include)
CMakeLists.txt:17 (dune_project)
IMHO this should be in 2.6 as people might need to get compilers working, we did not think about.
Edited by Markus Blatt