The Debug configuration is the default, but it is not filled in in cmake-gui.
Do this, and set Debug and Release as available options.
See https://trac.wxwidgets.org/ticket/18438
Fix warning: Command line warning D9025 : overriding '/W3' with '/W4'
Remove /W3, either via a regex or via new policy CMP0092 (CMake 3.15).
The policy has to be set before calling project(), otherwise the
CMAKE_<LANG>_FLAGS are already initialized.
See https://trac.wxwidgets.org/ticket/18438
The changes in 0a94c1890f where an
incomplete solution.
The apple compiler automatically choses libc++ if the deployment target
is >= 10.9. Lower deployment targets need explicit compiler options
to use libc++.
Add CMake-based build system.
Merge the original branch without any changes except for resolving the
conflict due to moving the contents of .travis.yml to a separate file by
propagating the changes done in this file since then to the new script
and rerunning ./build/update-setup-h and ./build/cmake/update_files.py
to update the file lists changed in the meanwhile.
Closes https://github.com/wxWidgets/wxWidgets/pull/330
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.
