Draft: Cleaner build files

We can remove the sdl2_dep in our build files if we declare all dependencies in the animationwindow build-file when we actually make the animationwindow_dep and not just where we make the static library.

When the sdl2_mixer is added we can do this change, however this will not be merged until summer to not disturb the current revision of build files in use.

configuration/gui/meson.build

@@ -5,18 +5,9 @@ project('GUI Project', 'cpp',
                      'c_std=c17',
                      'default_library=static'])
 
-# Windows compilation has no pre-packaged SDL2 available, and compilation takes a while.
-# If you want to compile from source, remove everything but the contents of the else clause.
-if host_machine.system() == 'windows'
-  sdl2_dep = subproject('sdl2_windows').get_variable('sdl2_windows_dep')
-else
-  sdl2_dep = dependency('sdl2')
-endif
-
 animationwindow_dep = dependency('animationwindow', fallback: ['animationwindow', 'animationwindow_dep'])
 std_lib_facilities_dep = dependency('std_lib_facilities', fallback: ['std_lib_facilities', 'std_lib_facilities_dep'])
 
-
 if host_machine.system() == 'linux'
   compiler_flags = ['-Wconversion', '-fdiagnostics-color=always', '-Werror=return-type']
 else
@@ -25,4 +16,4 @@ endif
 
 src = ['main.cpp']
 
-exe = executable('program', src, dependencies : [animationwindow_dep, sdl2_dep, std_lib_facilities_dep], cpp_args : compiler_flags)
+exe = executable('program', src, dependencies : [animationwindow_dep, std_lib_facilities_dep], cpp_args : compiler_flags)