These options are declared with TYPE enum and a MAPPING that's supposed
to control the feature 'system-zlib' or 'system-sqlite'. Since only
inputs of type boolean control features now, we need to somehow declare
that this non-boolean input controls a feature.
We do this by adding the keyword CONTROLS_FEATURE to
qt_commandline_option. For example,
qt_commandline_option(zlib
CONTROLS_FEATURE
TYPE enum
NAME system-zlib
MAPPING system yes qt no
)
declares
- commandline option "zlib" sets the input "system-zlib",
because of the "NAME system-zlib" argument
- accepted input values are "system" and "qt", because
we have "TYPE enum" and the odd values of MAPPING
- those values are translated to yes/no, because of the
even values of MAPPING
- CONTROLS_FEATURE forces the translated input's type
to boolean, and with that it will set the corresponding
feature 'system-zlib'
Luckily, only qtbase has command line options with MAPPING declared.
Change-Id: I82d06cec43ece3b002c8f5dd414c68dc730909af
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
6e12a298f4