run mkdcdisc on cmake

CMakeLists.txt

@@ -14,6 +14,7 @@ elseif(PLATFORM_DREAMCAST)
   add_compile_definitions(USE_KALLISTIOS)
   add_compile_definitions(NO_FCNTL)
   set(GL GL)
+
 else()
   find_package(OpenGL REQUIRED)
 
@@ -80,7 +81,17 @@ if(NOT FOUND AND TRY_MILSKO)
 endif()
 
 if(PLATFORM_DREAMCAST)
-file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/romdisk/)
-file(COPY ${CMAKE_BINARY_DIR}/../id1 DESTINATION ${CMAKE_BINARY_DIR}/romdisk/)
-kos_add_romdisk(${PROJECT_NAME} ${CMAKE_BINARY_DIR}/romdisk/)
+
+file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/cd/)
+file(COPY ${CMAKE_BINARY_DIR}/../id1 DESTINATION ${CMAKE_BINARY_DIR}/cd/)
+# Note that mkdcdisc is a seperate tool.
+# https://gitlab.com/simulant/mkdcdisc
+add_custom_target(disc ALL
+  COMMAND mkdcdisc
+    -e gquake.elf
+    -D cd
+    -o gquake.cdi
+  COMMENT ("Building CD Image (requires mkdcdisc!)")
+  )
+
 endif()