Resolves the C++ standard to compile with. Reads cppStandard from the
Config.json in the current directory when one exists and falls back to
DEFAULT_CPP_STANDARD when the file is missing, unreadable, or does
not set the field.
Returns string
A value usable as -std=<value>
Throws
If cppStandard is set but is not a recognised standard
Resolves the C++ standard to compile with. Reads
cppStandardfrom theConfig.jsonin the current directory when one exists and falls back to DEFAULT_CPP_STANDARD when the file is missing, unreadable, or does not set the field.