nuke in-tree stb_image implementation

targets/4J.Render/meson.build

@@ -1,16 +1,3 @@
-# isolate em
-_sdl2 = dependency('sdl2')
-_threads = dependency('threads')
-_glm = dependency('glm')
-_defs = []
-
-if get_option('renderer') == 'gles'
-  _gl = dependency('glesv2', required: true)
-  _defs += ['-DGLES']
-else
-  _gl = dependency('gl', required: true)
-endif
-
 render_sources = files(
   '4J_Render.cpp',
   'stdafx.cpp',
@@ -21,8 +8,8 @@ lib_render = static_library(
   '4J_Render',
   render_sources,
   include_directories: include_directories('.'),
-  dependencies: [_sdl2, _gl, _threads, _glm],
+  dependencies: [sdl2_dep, stb_dep, gl_dep, thread_dep, dependency('glm'), stb_dep],
-  cpp_args: _defs
+  cpp_args: global_cpp_args
   + [
     '-fpermissive',
     '-Wshift-count-overflow',