We are currently limited to C++ 11.
C++17 was standardized in 2017, and all of the major compilers we support have
had full C++17 support for several years.
What about increasing the minimum required C++ standard to C++17?
# Set compiler and linker flags common to all build environments
# current trunk uses the C++ "override" keyword, which requires C++11
if (CMAKE_VERSION VERSION_LESS "3.1")
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
endif ()
else ()
set (CMAKE_CXX_STANDARD 11)
endif ()
The minimum compiler versions for C++17 support are approximately:
Compiler Minimum Year C++17 option Comment
version
Clang (Linux) 5.0 2017 -std=c++17 C++17 language support
completed in Clang 5.
Apple Clang 10.0 2018 -std=c++17 Xcode 10 added important
missing C++17 library headers.
GCC 7.1 2017 -std=c++17 C++17 language support is
complete in GCC 7.1;
GCC 12.0 2022 however, the C++17 library
was not fully complete until GCC 12.0.
MSVC (cl) 19.14 2018 /std:c++17 MSVC toolset shipped with
Visual Studio 2017 15.7.
So the oldest relevant compiler versions are now 8–9 years old.
Would there be any objection to bumping CMAKE_CXX_STANDARD from 11 to 17?_______________________________________________
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