Mostly working OSX build options, but it crashes on close with a thread error.

meson.build

@@ -5,19 +5,51 @@ project('raycaster', 'cpp',
     'cpp_args=-D_GLIBCXX_DEBUG=1 -D_GLIBCXX_DEBUG_PEDANTIC=1',
   ])
 
-add_global_link_arguments(
-  '-static-libgcc',
-  '-static-libstdc++',
-  '-static',
-  language: 'cpp',
-)
-
 # use this for common options only for our executables
 cpp_args=[]
+link_args=[]
 # these are passed as override_defaults
-exe_defaults = ['warning_level=2', 'werror=true']
+exe_defaults = [ 'warning_level=2' ]
 
 cc = meson.get_compiler('cpp')
+dependencies = []
+
+if build_machine.system() == 'windows'
+  sfml_main = dependency('sfml_main')
+  opengl32 = cc.find_library('opengl32', required: true)
+  winmm = cc.find_library('winmm', required: true)
+  gdi32 = cc.find_library('gdi32', required: true)
+
+  add_global_link_arguments(
+    '-static-libgcc',
+    '-static-libstdc++',
+    '-static',
+    language: 'cpp',
+  )
+
+  dependencies += [
+      opengl32, winmm, gdi32, sfml_main
+  ]
+  exe_defaults += ['werror=true']
+
+elif build_machine.system() == 'darwin'
+  add_global_link_arguments(
+    language: 'cpp',
+  )
+
+  opengl = dependency('OpenGL')
+  corefoundation = dependency('CoreFoundation')
+  carbon = dependency('Carbon')
+  cocoa = dependency('Cocoa')
+  iokit = dependency('IOKit')
+  corevideo = dependency('CoreVideo')
+
+  link_args += ['-ObjC']
+  exe_defaults += ['werror=false']
+  dependencies += [
+    opengl, corefoundation, carbon, cocoa, iokit, corevideo
+  ]
+endif
 
 catch2 = dependency('catch2-with-main')
 fmt = subproject('fmt').get_variable('fmt_dep')
@@ -33,12 +65,14 @@ sfml_audio = dependency('sfml_audio')
 sfml_graphics = dependency('sfml_graphics')
 sfml_network = dependency('sfml_network')
 sfml_system = dependency('sfml_system')
-sfml_window = dependency('sfml_window')
+sfml_window = dependency('sfml_window',
+  default_options: ['default_library=shared'])
+
 ftxui_screen = dependency('ftxui-screen')
 ftxui_dom = dependency('ftxui-dom')
 ftxui_component = dependency('ftxui-component')
 
-dependencies = [
+dependencies += [
   fmt, json, freetype2,
   flac, ogg, vorbis, vorbisfile, vorbisenc,
   sfml_audio, sfml_graphics,
@@ -46,16 +80,6 @@ dependencies = [
   sfml_window, ftxui_screen, ftxui_dom, ftxui_component
 ]
 
-if build_machine.system() == 'windows'
-  sfml_main = dependency('sfml_main')
-  opengl32 = cc.find_library('opengl32', required: true)
-  winmm = cc.find_library('winmm', required: true)
-  gdi32 = cc.find_library('gdi32', required: true)
-
-  dependencies += [
-      opengl32, winmm, gdi32, sfml_main
-  ]
-endif
 
 
 sources = [
@@ -118,12 +142,16 @@ executable('runtests', sources + [
   'tests/spatialmap.cpp',
   'tests/textures.cpp',
   'tests/tilemap.cpp',
-  ], override_options: exe_defaults,
+  ],
+  cpp_args: cpp_args,
+  link_args: link_args,
+  override_options: exe_defaults,
   dependencies: dependencies + [catch2])
 
 
 executable('zedcaster',
   sources + [ 'main.cpp' ],
   cpp_args: cpp_args,
+  link_args: link_args,
   override_options: exe_defaults,
   dependencies: dependencies)