add doomretro target

build.py

@@ -224,6 +224,43 @@ class CrispyDoomTarget(ChocolateDoomTarget):
         self.url = 'https://github.com/fabiangreffrath/crispy-doom.git'
 
 
+class DoomRetroTarget(Target):
+    def __init__(self):
+        super().__init__()
+        self.name = 'doomretro'
+        self.url = 'https://github.com/bradharding/doomretro.git'
+
+    def configure(self, builder: 'Builder'):
+        self._assign_common_linker_flags(builder)
+
+        extra_linker_args = ' -lc++ -framework Cocoa -framework ForceFeedback -framework IOKit'
+
+        extra_libs = (
+            'mikmod',
+            'modplug',
+            'opusfile',
+            'vorbisfile',
+            'webp'
+        )
+
+        for lib in extra_libs:
+            extra_linker_args += f' {builder.lib_path}lib{lib}.a'
+
+        sdl2_include_dir = builder.include_path + 'SDL2'
+
+        opts = self.cmake_options
+        opts['SDL2_INCLUDE_DIRS'] = sdl2_include_dir
+        opts['SDL2_LIBRARIES'] = builder.lib_path + 'libSDL2.a'
+        opts['SDL2_FOUND'] = 'YES'
+        opts['SDL2_IMAGE_INCLUDE_DIRS'] = sdl2_include_dir
+        opts['SDL2_IMAGE_LIBRARIES'] = builder.lib_path + 'libSDL2_image.a'
+        opts['SDL2_IMAGE_FOUND'] = 'YES'
+        opts['SDL2_MIXER_INCLUDE_DIRS'] = sdl2_include_dir
+        opts['SDL2_MIXER_LIBRARIES'] = builder.lib_path + 'libSDL2_mixer.a'
+        opts['SDL2_MIXER_FOUND'] = 'YES'
+        opts['CMAKE_EXE_LINKER_FLAGS'] += extra_linker_args
+
+
 class DevilutionXTarget(Target):
     def __init__(self):
         super().__init__()
@@ -416,6 +453,7 @@ class Builder(object):
             PrBoomPlusTarget(),
             ChocolateDoomTarget(),
             CrispyDoomTarget(),
+            DoomRetroTarget(),
             DevilutionXTarget(),
         )