There are two steps, described for each platform below

1. Build wxWidgets
2. Build FTK

Note this has only been tested with VC 2015. It probably works with other versions.

1. Start a command line with Visual Studio 2015 X64 command line tools.
2. cd to the 'ftk' folder (the one you checked out)
3. python tools/build_wxwidgets.py

When complete you'll have static libraries the following folder:

wxWidgets\lib\vc_x64_lib\wxmsw30u(d)*.lib

4. Run Visual Studio 2015
5. Open the solution ftk/build/win/ftk_wx.sln
6. F7 to build

1. cd to the 'ftk' folder (the one you checked out)
2. python tools/build_wxwidgets.py

You'll then have the following libraries:

wxWidgets/build-debug/lib/*.a
wxWidgets/build-release/lib/*.a

3. Run XCode
4. Open `ftk/build/osx/Flutter ToolKit.xcodeproj'
5. Cmd + B to build.

1. cd to the 'ftk' folder (the one you checked out)
2. python tools/build_wxwidgets.py
3. cd to ftk/build/linux
4. cmake .
5. make