Move amiga defines to a separate file

CMake/amiga_defs.cmake

@@ -0,0 +1,10 @@
+set(ASAN OFF)
+set(UBSAN OFF)
+set(NONET ON)
+set(USE_SDL1 ON)
+set(SDL1_VIDEO_MODE_BPP 8)
+set(TTF_FONT_PATH \"LiberationSerif-Bold.ttf\")
+# Enable exception suport as they are used in dvlnet code
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fexceptions")
+find_package(Freetype REQUIRED)
+find_package(ZLIB REQUIRED)

CMakeLists.txt

@@ -109,16 +109,7 @@ if(HAIKU)
 endif()
 
 if(AMIGA)
-  set(ASAN OFF)
-  set(UBSAN OFF)
-  set(NONET ON)
-  set(USE_SDL1 ON)
-  find_package(Freetype REQUIRED)
-  find_package(ZLIB REQUIRED)
-  # Enable exception suport as they are used in dvlnet code
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fexceptions")
-  set(TTF_FONT_PATH \"LiberationSerif-Bold.ttf\")
-  set(SDL1_VIDEO_MODE_BPP 8)
+  include(amiga_defs)
 endif()
 
 if(DIST)