Signed-off-by: Simon McVittie <[email protected]>

On filesystems with large inode numbers, such as overlayfs, attempting
to stat() a file on a 32-bit system using legacy syscalls can fail
with EOVERFLOW. If we opt-in to more modern "large file support"
syscalls, then source code references to functions like stat() are
transparently replaced with ABIs that support large file sizes and
inode numbers, such as stat64().

In general, SDL_ttf delegates its file I/O to SDL, so it is unaffected
by this issue. However, if we build with the vendored libraries, they
use libc functions like stat(), subjecting them to the EOVERFLOW problem.

Signed-off-by: Simon McVittie <[email protected]>

This fixes a regression for the py-sdl2 test suite, which exercises
the (now-deprecated) TTF_SetDirection() and TTF_SetScript(), and
expects setting a new global value to have an effect on pre-existing
font objects.

Resolves: libsdl-org#221
Signed-off-by: Simon McVittie <[email protected]>

Partially fixes libsdl-org#225

Fixes libsdl-org#225

- Use 'SDL2TTF_' prefix for all options
- Create SDL2_ttf::SDL2_ttf when building a shared library,
  create SDL2_ttf::SDL2_ttf-static when building a static library
- Use same CMake layout as SDL_image/SDL_mixer
- Create libSDL2_ttfd.so symbolic link (when building debug build type)
- Add PrivateSdlFunctions.cmake script for common functionality between SDL_image/SDL_mixer
- Add FindXXX.cmake scripts for dependencies that don't provide cmake configuration files
- Add CMakeLists.txt + cmake scripts to source distribution (EXTRA_DIST of autotools)
- Test CMake on mingw64 (using system dependencies there)
- Add MacOS CI
- Create symbolic link at build time + install it
- Only install SDL2_ttf.pc when building a shared SDL2_ttf (to avoid overwriting when later installing a static SDL2_tff)
- Allow parallel installation with cmake support of a static and shared SDL2_ttf
- Macos versioning