Where can we find which default compilers and compiler flags will be picked up by CMake for our platform? CMake offers the --system-information flag, which will dump all information about your system to the screen or a file. To see this, try the following:
$ cmake --system-information information.txt
Searching through the file (in this case, information.txt), you will find the default values for the CMAKE_CXX_COMPILER, CMAKE_C_COMPILER, and CMAKE_Fortran_COMPILER options, together with their default flags. We will have a look at the flags in the next recipe.
CMake provides additional variables to interact with compilers:
- CMAKE_<LANG>_COMPILER_LOADED: This is set to TRUE if the language, <LANG>, was enabled for the project. ...
