feat: generating debug files during linux release builds (#4308)

linux release构建时生成与MediaServer 匹配的debug文件。
生产环境依然使用小尺寸的MediaServer，在需要gdb调试或者查看coredump文件时可以结合debug文件查看调用栈。

CMakeLists.txt

@@ -198,7 +198,12 @@ if(UNIX)
   if("${CMAKE_BUILD_TYPE}" STREQUAL "Debug")
     set(COMPILE_OPTIONS_DEFAULT ${COMPILE_OPTIONS_DEFAULT} "-g3")
   else()
-    set(COMPILE_OPTIONS_DEFAULT ${COMPILE_OPTIONS_DEFAULT} "-g0")
+    find_program(OBJCOPY_FOUND objcopy)
+    if (OBJCOPY_FOUND)
+      set(COMPILE_OPTIONS_DEFAULT ${COMPILE_OPTIONS_DEFAULT} "-g3")
+    else()
+      set(COMPILE_OPTIONS_DEFAULT ${COMPILE_OPTIONS_DEFAULT} "-g0")
+    endif()
   endif()
 elseif(WIN32)
   if (MSVC)

server/CMakeLists.txt

@@ -66,3 +66,23 @@ else()
 endif()
 
 install(TARGETS MediaServer DESTINATION ${INSTALL_PATH_RUNTIME})
+
+#relase 类型时额外输出debug调试信息
+string(TOLOWER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE_LOWER)
+if(UNIX)
+  if("${CMAKE_BUILD_TYPE_LOWER}" STREQUAL "release")
+    find_program(OBJCOPY_FOUND objcopy)
+    if (OBJCOPY_FOUND)
+      add_custom_command(TARGET MediaServer
+        POST_BUILD
+        COMMAND objcopy --only-keep-debug ${EXECUTABLE_OUTPUT_PATH}/MediaServer ${EXECUTABLE_OUTPUT_PATH}/MediaServer.debug
+        COMMAND objcopy --strip-all ${EXECUTABLE_OUTPUT_PATH}/MediaServer
+        COMMAND objcopy --add-gnu-debuglink=${EXECUTABLE_OUTPUT_PATH}/MediaServer.debug ${EXECUTABLE_OUTPUT_PATH}/MediaServer
+      )
+      install(FILES ${EXECUTABLE_OUTPUT_PATH}/MediaServer.debug DESTINATION ${INSTALL_PATH_RUNTIME})
+    else()
+      message(STATUS "not found objcopy, generate MediaServer.debug skip")
+    endif()
+  endif()
+endif()
+