Add --help
and refactoring for better error handling
#23
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Add
--help
option and factor out aboost_module
classIntroduces a class for handling e.g. the sub-paths for Boost modules.
This allows to keep the related logic more focused and consistent.
Also use that for validating the command line arguments expecting modules.
Motivation was that after passing e.g.
libs/locale
as an argument to--cmake
which yielded a CML that was missing all files, dependencies and C++ standard setting instead of showing an error.