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build/cmake/build_linker.cmake

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+#===============================================================================
+# @brief    cmake deal with link script
+# Copyright (c) HiSilicon (Shanghai) Technologies Co., Ltd. 2022-2022. All rights reserved.
+#===============================================================================
+
+if("${LINK_SCRIPT}" STREQUAL "")
+    MESSAGE(FATAL_ERROR "linkscript is not found!")
+endif()
+
+function(auto_gen_lds macro_name lib_list)
+    file(APPEND ${CMAKE_BINARY_DIR}/auto_gen_libfunc.lds "#define ${macro_name}(func) \\\n")
+    set(LIB_FUNC "${${lib_list}}")
+    list(TRANSFORM LIB_FUNC PREPEND "    func(*lib")
+    list(TRANSFORM LIB_FUNC APPEND ".a:*.o) \\\n")
+    file(APPEND ${CMAKE_BINARY_DIR}/auto_gen_libfunc.lds ${LIB_FUNC} "\n")
+endfunction()
+
+# 添加用于处理链接脚本用的编译宏
+set(LDS_DEFINES ${DEFINES})
+list(TRANSFORM LDS_DEFINES PREPEND "-D")
+
+# 添加用于处理链接脚本用的编译头文件
+if(DEFINED LDS_HEADER)
+    list(REMOVE_ITEM LDS_HEADER "")
+    list(TRANSFORM LDS_HEADER PREPEND "-I")
+else()
+    set(LDS_HEADER ${ALL_PUBLIC_HEADER})
+    list(REMOVE_DUPLICATES LDS_HEADER)
+    list(REMOVE_ITEM LDS_HEADER "")
+    list(TRANSFORM LDS_HEADER PREPEND "-I")
+endif()
+list(APPEND LDS_HEADER -I${CMAKE_BINARY_DIR})
+if(DEFINED ROM_RAM_CHECK)
+    list(APPEND LDSDEFINES -DROM_BIN_CHECK)
+endif()
+list(TRANSFORM LDS_HEADER PREPEND "\"")
+list(TRANSFORM LDS_HEADER APPEND "\"")
+string(JOIN " " LDS_HEADER_STR ${LDS_HEADER})
+file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/linker_header.srp "${LDS_HEADER_STR}")
+auto_gen_lds("LIB_RAM_FUNC" RAM_COMPONENT)
+auto_gen_lds("LIB_ROM_FUNC" ROM_COMPONENT)
+auto_gen_lds("LIB_LOS_FUNC" LOS_LIB)
+
+if(DEFINED SDK_OUTPUT_PATH)
+    string(REPLACE "${PROJECT_SOURCE_DIR}" "${SDK_OUTPUT_PATH}" dest ${LINK_SCRIPT})
+    get_filename_component(dest ${dest} DIRECTORY)
+    install(FILES ${LINK_SCRIPT} DESTINATION ${dest})
+    install_sdk(${LINK_SCRIPT} "*.prelds")
+endif()
+
+if(NOT DEFINED ROM_CHECK)
+    set(ROM_CHECK False)
+endif()
+
+if(${ROM_CHECK})
+    list(APPEND LDS_DEFINES "-DROM_CHECK")
+endif()
+
+add_custom_command(TARGET ${TARGET_NAME} PRE_BUILD
+    COMMAND ${CMAKE_C_COMPILER} -P -xc -E -o linker.lds @${CMAKE_CURRENT_BINARY_DIR}/linker_header.srp ${LDS_DEFINES} ${LINK_SCRIPT}
+    COMMENT "Generating ${LINK_SCRIPT} -> ${CMAKE_BINARY_DIR}/linker.lds"
+    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+    VERBATIM
+)
+
+target_link_directories(${TARGET_NAME}
+    PRIVATE
+    ${LIB_GCC}
+    ${LIB_C}
+    ${LIB_CXX}
+)
+
+target_link_libraries(${TARGET_NAME}
+PRIVATE
+    -Wl,--start-group "${STD_LIBS}" -Wl,--end-group
+)
+
+target_link_options(${TARGET_NAME}
+    PRIVATE
+    ${LINKFLAGS}
+    -Wl,-T${CMAKE_BINARY_DIR}/linker.lds -nostartfiles
+    -Wl,--gc-sections -Wl,-Map=${CMAKE_BINARY_DIR}/${BIN_NAME}.map
+    -Wl,--print-memory-usage
+)