How to add gcc compile parameters with b2

[shiyi23]

I want to add “-Werror -Wfatal-errors -Wall -Wextra” when I use b2 to build project, how can I do?

[grafikrobot]

For most of those you can use the warnings and warnings-as-errors features (see https://www.bfgroup.xyz/b2/manual/release/index.html#bbv2.overview.builtins.features). For example:

> b2 warnings=extra warnings-as-errors=on

The above will not include the -Wfatal-errors option though. You would have to the the cxxflags feature for that: cxxflags=-Wfatal-errors. If you are doing fatal errors you also probably want to fail building on the first source file failure with the -q option (see https://www.bfgroup.xyz/b2/manual/release/index.html#bbv2.overview.invocation.options).