makes the port provide its dependencies as a library

CMakeLists.txt

@@ -36,54 +36,35 @@ option(NX_DEBUG "compile netxduo debug output in" OFF)
 set(TARGET_MEM "ram" CACHE STRING "memory map to use")
 set(CMAKE_EXECUTABLE_SUFFIX_C ".elf")
 
+add_subdirectory(port/moonlight)
+
 function(setup_target TARGET)
   set(options)
   set(oneValueArgs) # none for now
   set(multiValueArgs LIBRARIES SOURCES)
   cmake_parse_arguments(ST "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
   if(ST_UNPARSED_ARGUMENTS)
-    message(FATAL_ERROR "setup_target(${target} ...): unknown args: ${ST_UNPARSED_ARGUMENTS}")
+    message(FATAL_ERROR "setup_target(${TARGET} ...): unknown args: ${ST_UNPARSED_ARGUMENTS}")
   endif()
 
   add_executable(${TARGET})
-  target_sources(${TARGET} PRIVATE
+  target_add_moonlight_platform(${TARGET})
-    ${CMAKE_SOURCE_DIR}/port/picolibc/port.c
+
-    ${CMAKE_SOURCE_DIR}/port/moonlight/bootup.c
-    ${CMAKE_SOURCE_DIR}/port/moonlight/board.c
-    ${CMAKE_SOURCE_DIR}/port/moonlight/trap_non_vectored.c
-    ${CMAKE_SOURCE_DIR}/port/moonlight/exception.c
-    ${CMAKE_SOURCE_DIR}/port/moonlight/vector_table.c
-  )
   if("netxduo" IN_LIST ST_LIBRARIES)
-    target_sources(${TARGET} PRIVATE ${CMAKE_SOURCE_DIR}/port/moonlight/mnrs_network_driver.c)
+    target_add_moonlight_network_driver(${TARGET})
   endif()
 
   if(ST_SOURCES)
     target_sources(${TARGET} PRIVATE ${ST_SOURCES})
   endif()
 
-  target_include_directories(${TARGET} PRIVATE ${CMAKE_SOURCE_DIR}/port/moonlight ${CMAKE_SOURCE_DIR}/src)
-  target_compile_options(${TARGET} PRIVATE
-    -ffreestanding
-    -fno-builtin
-    -fdata-sections
-    -ffunction-sections
-  )
-  if(NX_DEBUG)
-    target_compile_definitions(${TARGET} PRIVATE NX_DEBUG NX_DEBUG_PACKET)
-  endif()
-  target_link_directories(${TARGET} PRIVATE ${CMAKE_SOURCE_DIR}/src) # needed for linker script includes
-  target_link_options(${TARGET} PRIVATE
-    -nostartfiles
-    -nostdlib
-    -T ${CMAKE_SOURCE_DIR}/src/${TARGET_MEM}.lds
-    -Wl,--gc-sections
-    -Wl,-Map=${CMAKE_BINARY_DIR}/${TARGET}.map
-  )
   if(ST_LIBRARIES)
     target_link_libraries(${TARGET} PRIVATE ${ST_LIBRARIES})
   endif()
 
+  target_link_options(${TARGET} PRIVATE
+    -Wl,-Map=${CMAKE_BINARY_DIR}/${TARGET}.map)
+
   add_custom_command(TARGET ${TARGET} POST_BUILD
     COMMAND ${OBJCOPY} -O ihex $<TARGET_FILE:${TARGET}> ${CMAKE_BINARY_DIR}/${TARGET}.hex
     COMMAND ${OBJCOPY} -O binary $<TARGET_FILE:${TARGET}> ${CMAKE_BINARY_DIR}/${TARGET}.bin

port/moonlight/CMakeLists.txt

@@ -0,0 +1,55 @@
+set(MOONLIGHT_ROOT ${CMAKE_CURRENT_LIST_DIR})
+set(THREADX4TGFS_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/../..)
+
+set(MOONLIGHT_PLATFORM_SOURCES
+  ${THREADX4TGFS_ROOT}/port/picolibc/port.c
+  ${MOONLIGHT_ROOT}/bootup.c
+  ${MOONLIGHT_ROOT}/board.c
+  ${MOONLIGHT_ROOT}/trap_non_vectored.c
+  ${MOONLIGHT_ROOT}/exception.c
+  ${MOONLIGHT_ROOT}/vector_table.c)
+
+add_library(moonlight_platform_defaults INTERFACE)
+target_include_directories(moonlight_platform_defaults INTERFACE
+  ${MOONLIGHT_ROOT}
+  ${THREADX4TGFS_ROOT}/src)
+target_compile_options(moonlight_platform_defaults INTERFACE
+  -ffreestanding
+  -fno-builtin
+  -fdata-sections
+  -ffunction-sections)
+target_link_directories(moonlight_platform_defaults INTERFACE
+  ${THREADX4TGFS_ROOT}/src)
+target_link_options(moonlight_platform_defaults INTERFACE
+  -nostartfiles
+  -nostdlib
+  -T ${THREADX4TGFS_ROOT}/src/${TARGET_MEM}.lds
+  -Wl,--gc-sections)
+if(NX_DEBUG)
+  target_compile_definitions(moonlight_platform_defaults INTERFACE
+    NX_DEBUG
+    NX_DEBUG_PACKET)
+endif()
+
+add_library(moonlight_platform_common OBJECT
+  ${MOONLIGHT_PLATFORM_SOURCES})
+target_link_libraries(moonlight_platform_common PUBLIC
+  moonlight_platform_defaults
+  c
+  threadx)
+
+add_library(moonlight_network_driver OBJECT
+  ${MOONLIGHT_ROOT}/mnrs_network_driver.c)
+target_link_libraries(moonlight_network_driver PUBLIC
+  moonlight_platform_defaults
+  c
+  threadx
+  netxduo)
+
+function(target_add_moonlight_platform TARGET)
+  target_link_libraries(${TARGET} PRIVATE moonlight_platform_common)
+endfunction()
+
+function(target_add_moonlight_network_driver TARGET)
+  target_link_libraries(${TARGET} PRIVATE moonlight_network_driver)
+endfunction()