Description

Recently, a major CMake rework was done in the SDL2 subprojects, adding a consistent naming for the targets. Unfortunately, the naming chosen is inconsistent with the one used by vcpkg's ports.

The new naming consists in:

• The namespace SDL2_XXX:: where XXX is the name of the subproject
• A static target SDL2_XXX::SDL_XXX-static linked to SDL2::SDL2-static
• A dynamic target SDL2_XXX::SDL_XXX linked to SDL2::SDL2

Proposed solution

Adopt the naming chosen by the maintainers.

Alternatives

To avoid breaking existing projects/ports, the targets currently in use by vcpkg could be kept as an alias of the new one with a deprecation message, similar to what is currently done in SDL_ttf.

Additional context

Related PRs:

• Improve CMake build system libsdl-org/SDL_image#238
• Rewrite CMake build script libsdl-org/SDL_mixer#410
• Add CMake support libsdl-org/SDL_net#48
• Cmake work libsdl-org/SDL_ttf#213