Library gtk not mentioned in readme

[thenewkgb]

I have an app Cxxdroid for Android and I'm able to include sdl2, sdl_image and sdl_ttf libraries plus libxml2. These are the dependencies in the readme and I thought I could use your code. I'm not brilliant at C++, but copied the whole libxml2gui folder including CMakeLists, but got an error "gtk.h not found". I didn't see any mention of gtk? I think you've helped me possibly prepare for UI control and I'd like to try out your code :)

[adamajammary]

Hi @thenewkgb

I have added some extra details to README in the release-1 branch.

My CMakeLists.txt currently only supports Windows, MacOS and Linux.

The include headers are platform dependent:

Platform	Header	Preprocessor
Linux	gtk/gtk.h	_linux
MacoOS	AppKit/AppKit.h	_macosx
Windows	shobjidl_core.h	_windows

The OS variable in CMakeLists.txt decides which platform to build for.

if (APPLE)
    set(OS "_macosx")
elseif (UNIX)
    set(OS "_linux")
elseif (WIN32)
    set(OS "_windows")
endif()

The header files are included based on which preprocessor was set in CMakeLists.txt.

Your system was probably detected as UNIX and _linux was set.

I also updated the DLL export to exclude the LSG_OpenFile and LSG_SaveFile methods in commit fe0d694, as these are the only methods that need gtk.h for the file dialogs.

I may plan to to update with support for Android and iOS in the future, but for now I just want to get it working on Desktop platforms first.

I have reserved the _android and _ios preprocessor definitions in the code, so if you want to play around with getting cmake building for Android, you can read more on cross-compiling-for-android.

Sorry for the lack of Android support for now.