这个解决方案是基于@RenatoUtsch的答案:

CMake列表:

string(LENGTH "${PROJECT_SOURCE_DIR}/" SOURCE_PATH_SIZE)
add_definitions("-DSOURCE_PATH_SIZE=${SOURCE_PATH_SIZE}")
add_definitions("-DSOURCE_PATH=\"${PROJECT_SOURCE_DIR}\"")

C / C + + header

#define __FILENAME__ strstr(__FILE__, SOURCE_PATH) + SOURCE_PATH_SIZE

在VC中，当使用/FC时，__FILE__展开为完整路径，不使用/FC选项__FILE__展开文件名。裁判:这里

因为使用的是GCC，所以可以利用

__BASE_FILE__这个宏扩展为主输入文件的名称，以C字符串常量的形式。这是源文件 在预处理器或C编译器的命令行中指定

然后在编译时通过更改源文件表示(完整路径/相对路径/basename)来控制显示文件名的方式。

一个简短的，适用于Windows和*nix的答案:

#define __FILENAME__ std::max<const char*>(__FILE__,\
    std::max(strrchr(__FILE__, '\\')+1, strrchr(__FILE__, '/')+1))

我多年来一直使用@Patrick的答案。

当完整路径包含符号链接时，它有一个小问题。

更好的解决方案。

set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-builtin-macro-redefined -D'__FILE__=\"$(subst $(realpath ${CMAKE_SOURCE_DIR})/,,$(abspath $<))\"'")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-builtin-macro-redefined -D'__FILE__=\"$(subst $(realpath ${CMAKE_SOURCE_DIR})/,,$(abspath $<))\"'")

为什么要用这个?

-Wno-builtin-macro-redefined to mute the compiler warnings for redefining __FILE__ macro. For those compilers do not support this, refer to the Robust way below. Strip the project path from the file path is your real requirement. You won't like to waste the time to find out where is a header.h file, src/foo/header.h or src/bar/header.h. We should strip the __FILE__ macro in cmake config file. This macro is used in most exists codes. Simply redefine it can set you free. Compilers like gcc predefines this macro from the command line arguments. And the full path is written in makefiles generated by cmake. Hard code in CMAKE_*_FLAGS is required. There is some commands to add compiler options or definitions in some more recently version, like add_definitions() and add_compile_definitions(). These commands will parse the make functions like subst before apply to source files. That is not we want.

重新定义- wno -内置宏的健壮方法。

include(CheckCCompilerFlag)
check_c_compiler_flag(-Wno-builtin-macro-redefined SUPPORT_C_WNO_BUILTIN_MACRO_REDEFINED)
if (SUPPORT_C_WNO_BUILTIN_MACRO_REDEFINED)
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-builtin-macro-redefined")
endif (SUPPORT_C_WNO_BUILTIN_MACRO_REDEFINED)
include(CheckCXXCompilerFlag)
check_cxx_compiler_flag(-Wno-builtin-macro-redefined SUPPORT_CXX_WNO_BUILTIN_MACRO_REDEFINED)
if (SUPPORT_CXX_WNO_BUILTIN_MACRO_REDEFINED)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-builtin-macro-redefined")
endif (SUPPORT_CXX_WNO_BUILTIN_MACRO_REDEFINED)

记住从集合(*_FLAGS…-D__FILE__ =…)。

red1ynx的答案经过调整，甚至更加“臃肿”:

#define __FILENAME__ \
  (strchr(__FILE__, '\\') \
  ? ((strrchr(__FILE__, '\\') ? strrchr(__FILE__, '\\') + 1 : __FILE__)) \
  : ((strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILE__)))

如果我们发现反斜杠，我们就分反斜杠。否则，拆分为正斜杠。很简单。

几乎任何替代方案都会更简洁(在我看来，c++ constexpr确实是这里的黄金标准)。然而，如果你正在使用一些__BASE_FILE__不可用的编译器，这可能是有帮助的。