make GPU use libepoxy

glew is old and has many issues that prevent it from running on modern systems
also port to meson because i'm not touching makefile hell

.gitignore

@@ -1,3 +1,5 @@
+/subprojects/*
+!/subprojects/*.wrap
 *.exe
 build/*
 build/

meson.build

@@ -0,0 +1,36 @@
+project('comet', 'c', default_options: 'default_library=static')
+
+comet_sources = [
+  'src/comet.c',
+  'src/cpu.c',
+  'src/decode.c',
+  'src/dev.c',
+  'src/ic.c',
+  'src/io.c',
+  'src/mmu.c',
+  'src/gpu/gpu.c',
+  'src/gpu/gpu.h',
+]
+
+cc = meson.get_compiler('c')
+
+sdl2_dep = dependency('sdl2')
+sdl2_image_dep = dependency('SDL2_image')
+sdl2_main_dep = cc.find_library('SDL2main')
+epoxy_dep = dependency('epoxy')
+m_dep = cc.find_library('m')
+
+comet_deps = [sdl2_dep, sdl2_image_dep, sdl2_main_dep, epoxy_dep, m_dep]
+
+if host_machine.system() == 'windows'
+  ws2_32_dep = cc.find_library('ws2_32')
+  comet_deps += ws2_32_dep
+endif
+
+executable(
+  'comet',
+  comet_sources,
+  dependencies: comet_deps,
+  win_subsystem: 'windows',
+  install: true
+)