Brought over a bunch of stuff to get started, but only lel.cpp compiles.

meson.build

@@ -0,0 +1,91 @@
+# clang might need _LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+
+project('lel-guecs', 'cpp',
+  version: '0.1.0',
+  default_options: [
+    'cpp_std=c++20',
+    'cpp_args=-D_GLIBCXX_DEBUG=1 -D_GLIBCXX_DEBUG_PEDANTIC=1',
+  ])
+
+# use this for common options only for our executables
+cpp_args=[]
+link_args=[]
+# these are passed as override_defaults
+exe_defaults = [ 'warning_level=2' ]
+
+cc = meson.get_compiler('cpp')
+dependencies = []
+
+if build_machine.system() == 'windows'
+  add_global_link_arguments(
+    '-static-libgcc',
+    '-static-libstdc++',
+    '-static',
+    language: 'cpp',
+  )
+
+  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
+  ]
+  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 = subproject('catch2').get_variable('catch2_with_main_dep')
+fmt = subproject('fmt').get_variable('fmt_dep')
+json = subproject('nlohmann_json').get_variable('nlohmann_json_dep')
+freetype2 = subproject('freetype2').get_variable('freetype_dep')
+
+flac = subproject('flac').get_variable('flac_dep')
+ogg = subproject('ogg').get_variable('libogg_dep')
+vorbis = subproject('vorbis').get_variable('vorbis_dep')
+vorbisfile = subproject('vorbis').get_variable('vorbisfile_dep')
+vorbisenc = subproject('vorbis').get_variable('vorbisenc_dep')
+sfml_audio = subproject('sfml').get_variable('sfml_audio_dep')
+sfml_graphics = subproject('sfml').get_variable('sfml_graphics_dep')
+sfml_network = subproject('sfml').get_variable('sfml_network_dep')
+sfml_system = subproject('sfml').get_variable('sfml_system_dep')
+sfml_window = subproject('sfml').get_variable('sfml_window_dep')
+
+dependencies += [
+  fmt, json, freetype2,
+  flac, ogg, vorbis, vorbisfile, vorbisenc,
+  sfml_audio, sfml_graphics,
+  sfml_network, sfml_system,
+  sfml_window
+]
+
+sources = [
+  'dbc.cpp',
+  'lel.cpp'
+]
+
+executable('runtests', sources + [
+  'tests/lel.cpp',
+  ],
+  cpp_args: cpp_args,
+  link_args: link_args,
+  override_options: exe_defaults,
+  dependencies: dependencies + [catch2])