优化可执行文件大小

mkrtos_bootstrap/CMakeLists.txt

@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.13)
 
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} \
 -Werror \
--D__MPU_PRESENT=1 -DUSE_STDPERIPH_DRIVER=1 \
+-DUSE_STDPERIPH_DRIVER=1 \
 -DSMP=1 \
 -Wno-unused-parameter \
 -Wno-unused-function \
@@ -10,29 +10,25 @@ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} \
 -Wno-deprecated \
 ")
 
-include_directories(${CMAKE_CURRENT_SOURCE_DIR}/)
-include_directories(${CMAKE_CURRENT_SOURCE_DIR}/inc)
-include_directories(${CMAKE_CURRENT_SOURCE_DIR}/inc/cortex-m3)
-include_directories(${CMAKE_CURRENT_SOURCE_DIR}/inc/stm32f205rft6)
-include_directories(${CMAKE_CURRENT_SOURCE_DIR}/inc/stm32f205rft6/lib)
-include_directories(${CMAKE_CURRENT_SOURCE_DIR}/inc/dietlibc)
-include_directories(${CMAKE_CURRENT_SOURCE_DIR}/inc/dietlibc/include)
+include_directories(${CMAKE_SOURCE_DIR}/)
+include_directories(${CMAKE_SOURCE_DIR}/mkrtos_bootstrap/core/cortex-m3)
+include_directories(${CMAKE_SOURCE_DIR}/mkrtos_bootstrap/inc/lib)
+include_directories(${CMAKE_SOURCE_DIR}/mkrtos_bootstrap/inc/stm32f205rft6)
+include_directories(${CMAKE_SOURCE_DIR}/mkrtos_bootstrap/inc/stm32f205rft6/lib)
 
 
-add_subdirectory(src)
-
-file(GLOB deps *.c *.S)
+file(GLOB_RECURSE deps *.c *.S)
 
 add_executable(bootstrap.elf
     ${deps}
 )
 
 set_target_properties(bootstrap.elf PROPERTIES LINK_FLAGS 
-"-T ${CMAKE_CURRENT_SOURCE_DIR}/stm32f205rft6_link.lds")
+"-T ${CMAKE_CURRENT_SOURCE_DIR}/stm32f205rft6_link.lds --gc-section ")
 
-TARGET_LINK_LIBRARIES(bootstrap.elf
-    boot_src
-)
+# TARGET_LINK_LIBRARIES(bootstrap.elf
+#     boot_src
+# )
 
 add_custom_target(
     bootstrap_dump ALL
@@ -44,5 +40,7 @@ add_custom_target(
     cp bootstrap.bin ${CMAKE_SOURCE_DIR}/build/output/bootstrap
     COMMAND
     cp bootstrap.elf ${CMAKE_SOURCE_DIR}/build/output/bootstrap.elf
+    COMMAND
+    ${CMAKE_SIZE} bootstrap.elf
 )
 add_dependencies(bootstrap_dump bootstrap.elf)