CMake/compatibility.cmake: define functions and macros to be used
if a particular CMake functionality requires a higher CMake version
than FLTK's minimum CMake version, see 'cmake_minimum_required(...)'
in the root CMakeLists.txt.
Note: target_link_directories() is available since CMake 3.13
- add missing dependencies to build the shared libfltk_cairo(.dylib)
- remove incorrect dependency on cairo from libfltk
- add cairo_test-shared demo (linked with shared libs)
than what we had previously, but may need some more testing. The latest
changes (removing old APPLE_QD definitions and code) might need another
update.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@7451 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
