Support CMake for apng

src/CMakeLists.txt

@@ -379,6 +379,12 @@ if(${SRB2_CONFIG_HAVE_PNG} AND ${SRB2_CONFIG_HAVE_ZLIB})
 			set(SRB2_HAVE_PNG ON)
 			add_definitions(-DHAVE_PNG)
 			add_definitions(-D_LARGEFILE64_SOURCE)
+			set(SRB2_PNG_SOURCES apng.c)
+			set(SRB2_PNG_HEADERS apng.h)
+			prepend_sources(SRB2_PNG_SOURCES)
+			prepend_sources(SRB2_PNG_HEADERS)
+			source_group("Main" FILES ${SRB2_CORE_SOURCES} ${SRB2_CORE_HEADERS}
+				${SRB2_PNG_SOURCES} ${SRB2_PNG_HEADERS})
 		else()
 			message(WARNING "You have specified that PNG is available but it was not found. SRB2Kart may not compile correctly.")
 		endif()

src/sdl/CMakeLists.txt

@@ -70,6 +70,8 @@ if(${SDL2_FOUND})
 	set(SRB2_SDL2_TOTAL_SOURCES
 		${SRB2_CORE_SOURCES}
 		${SRB2_CORE_HEADERS}
+		${SRB2_PNG_SOURCES}
+		${SRB2_PNG_HEADERS}
 		${SRB2_CORE_RENDER_SOURCES}
 		${SRB2_CORE_GAME_SOURCES}
 		${SRB2_LUA_SOURCES}
@@ -80,7 +82,8 @@ if(${SDL2_FOUND})
 		${SRB2_SDL2_HEADERS}
 	)
 
-	source_group("Main" FILES ${SRB2_CORE_SOURCES} ${SRB2_CORE_HEADERS})
+	source_group("Main" FILES ${SRB2_CORE_SOURCES} ${SRB2_CORE_HEADERS}
+		${SRB2_PNG_SOURCES} ${SRB2_PNG_HEADERS})
 	source_group("Renderer" FILES ${SRB2_CORE_RENDER_SOURCES})
 	source_group("Game" FILES ${SRB2_CORE_GAME_SOURCES})
 	source_group("Assembly" FILES ${SRB2_ASM_SOURCES} ${SRB2_NASM_SOURCES})