Question

我正在尝试调试流程，我正在尝试使用-finstrument-functions编译器选项。我已成功编写了以下方法并创建了 trace.o 目标文件：

void __cyg_profile_func_enter(void* this_fn, void* call_site)
__attribute__((no_instrument_function));
void __cyg_profile_func_exit(void* this_fn, void* call_site)
__attribute__((no_instrument_function));

它适用于示例代码，我从文件中获取函数地址，从中我可以提取文件：函数名称。

在我们的项目代码中有大约1500个文件，所以我在CMakeLists.txt文件中添加了以下代码：

SET(GCC_COVERAGE_COMPILE_FLAGS "-finstrument-functions")
add_definitions(${GCC_COVERAGE_COMPILE_FLAGS})

以上配置确保我的所有源代码文件都使用-finstrument-functions编译器标志进行编译。

为确保我链接 trace.o 文件，我正在尝试以下方法：

SET(OBJS
  /c/work/trace.o #path to trace.o in my system
)

SET_SOURCE_FILES_PROPERTIES(
  ${OBJS}
  PROPERTIES
  EXTERNAL_OBJECT true
  GENERATED true
)

但在编译我的项目代码时，我得到以下错误：

    Test.cpp.obj: In function `cc::cppx::cMethod(int, int*, int&)':
    Test.cpp:16: undefined reference to `__cyg_profile_func_enter'
    Test.cpp:17: undefined reference to `__cyg_profile_func_exit'
    Test.cpp.obj: In function `__gthread_active_p':
    C:/tools/mingw64/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/gthr-default.h:304: undefined reference to `__cyg_profile_func_enter'
    C:/tools/mingw64/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/gthr-default.h:304: undefined reference to `__cyg_profile_func_exit'
    Test.cpp.obj: In function `__exchange_and_add_single':
    C:/tools/mingw64/x86_64-w64-mingw32/include/c++/ext/atomicity.h:66: undefined reference to `__cyg_profile_func_enter'
    C:/tools/mingw64/x86_64-w64-mingw32/include/c++/ext/atomicity.h:68: undefined reference to `__cyg_profile_func_exit'
    Test.cpp.obj: In function `forward<cc::cppx::TestInvoke_lambda_with_args_byvalue_ptr_ref_Test::TestBody()::<lambda(int, int*, int&)>&>':
    C:/tools/mingw64/x86_64-w64-mingw32/include/c++/bits/move.h:76: undefined reference to `__cyg_profile_func_enter'
    C:/tools/mingw64/x86_64-w64-mingw32/include/c++/bits/move.h:76: undefined reference to `__cyg_profile_func_exit'
    Test.cpp.obj: In function `operator()':
    Test.cpp:54: undefined reference to `__cyg_profile_func_enter'
    Test.cpp:56: undefined reference to `__cyg_profile_func_exit'
    Test.cpp.obj: In function `__exchange_and_add':
    C:/tools/mingw64/x86_64-w64-mingw32/include/c++/ext/atomicity.h:49: undefined reference to `__cyg_profile_func_enter'
    C:/tools/mingw64/x86_64-w64-mingw32/include/c++/ext/atomicity.h:49: undefined reference to `__cyg_profile_func_exit'
    Test.cpp.obj: In function `__tcf_0':

我正在努力寻找如何实现我的目标的方法，但它没有对问题进行排序 - 是否可以设置相同的方法？

CMAKE MinGW编译器标志-finstrument-functions

0 个答案: