After enabling wxBUILD_USE_STATIC_RUNTIME it cannot be disabled again
(except by manually modifying CMAKE_C*_FLAGS_*). Improve this by setting
the build flags to their default value when wxBUILD_USE_STATIC_RUNTIME
is disabled.
Closes https://github.com/wxWidgets/wxWidgets/pull/1338
Do not abort when libLZMA or libSecret can not be found, just show a warning.
Do not search for libSecret on macOS.
Disable libraries internally (not in cache) when not searching for them.
Support checking for multiple versions, first check gstreamer-1.0, then gstreamer-0.10.
Add support for finding gstreamer-player.
Specify the required components, add the include directories and link with the libraries of the found components.
Set the setup variables wxUSE_GSTREAMER and wxUSE_GSTREAMER_PLAYER.
It is no use adding it to the generated setup.h because this section is commented out,
so add it as compiler option instead.
The default option is 'Default' in which case no compiler option is added.
Don't overwrite options in setup.cmake.
Align text in summary message.
Always set wxUSE_XRC to values of wxUSE_XRC, same as in setup.h.
Disable wxUSE_XRC when expat is disabled.
Add CMake build system for libraries, tests and samples
update_files.py converts build/files into CMake format.
build/update-setup-h has been modified to update build/cmake/setup.h.in.
