Hi folks,
I'm currently using this logic to use C++14 with a fallback to C++11
when C++14 is unavailable:
if(NOT CMAKE_CXX_STANDARD)
set(CMAKE_CXX_STANDARD 14)
endif()
if(NOT CMAKE_CXX_STANDARD_REQUIRED)
set(CMAKE_CXX_STANDARD_REQUIRED 11)
endif()
which seems to work OK.
However, for some new stuff, I'd like to use C++17 when available, but
fall back to C++14, C++11 or C++98. Is it possible to do this?
- I'd like it to work on older CMake versions where "17" isn't a valid
version for the above; is there any way to introspect the supported
standards?
- And I'd like it to fall back intelligently, i.e. if 17 isn't available
I want it to select the newest standard possible, rather than falling
back all the way to 98
Any suggestions?
Thanks,
Roger
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