CMake:以二进制格式存储内部版本/系统信息 [英] CMake: Store build/system information in binary
问题描述
如何存储基本信息,例如系统名称( Linux
),使用的编译器 gcc
)或体系结构( x86_64
),放在我包含在二进制文件中的文件中?
How do I store basic information, like system name (Linux
), used compiler gcc
) or architecture (x86_64
), in a file that I include into my binary?
用于编写这样的 .in
文件已经存在,除了相关的CMake变量全部为空,例如 CMAKE_SYSTEM
或 CMAKE_SYSTEM_PROCESSOR
:
All the code for writing such a .in
file is already there, except that the relevant CMake variables are all empty, e.g. CMAKE_SYSTEM
or CMAKE_SYSTEM_PROCESSOR
:
set(NEWLINE "\\\\n")
file(WRITE ${CMAKE_BINARY_DIR}/update_buildflags.cmake "
file(WRITE \${DST} \"#define BUILDFLAGS \\\"
ARCH=\${CMAKE_SYSTEM}${NEWLINE}
COMP=\${CMAKE_SYSTEM_PROCESSOR}${NEWLINE}
BUILD=\${CMAKE_BUILD_TYPE}${NEWLINE}\\\"\n\")")
add_custom_target(update_buildflags COMMAND ${CMAKE_COMMAND}
-DDST=${PROJECT_SOURCE_DIR}/src/buildflags.c
-P ${CMAKE_BINARY_DIR}/update_buildflags.cmake)
此自定义然后将target作为主要二进制文件的依赖项添加,结果文件 src / buildflags.c
看起来像这样:
This custom target is then added as dependency for the main binary and the resulting file src/buildflags.c
looks like this:
#define BUILDFLAGS " ARCH=\n COMP=\n BUILD=\n"
为什么使用的CMake变量为空,尽管使用 message()
打印它们显示了co
Why are the used CMake variables empty although printing them with message()
shows the correct information?
CMAKE_SYSTEM: Linux-4.4.0-92-generic
推荐答案
您可以使用模板文件使其更具可读性。
You can use an template file to make it more readable.
- Pro:无需在cmake中写入整个文件
- Pro:易于编辑
- :附加文件
示例src / autocode / buildflags.h.in:
Example src/autocode/buildflags.h.in:
#ifndef BUILD_FLAGS_H
#def BUILD_FLAGS_H
#define ARCH ${CMAKE_SYSTEM}
#define COMP ${CMAKE_SYSTEM_PROCESSOR}
#define BUILD ${CMAKE_BUILD_TYPE}
// Add more of your stuff here
#define APP_BUILD_WITH_CMAKE_VERSION "${CMAKE_VERSION}"
#define APP_BUILD_ON_PLATFORM "${CMAKE_SYSTEM}"
#endif // BUILD_FLAGS_H
在您的CMakeLists.txt
In your CMakeLists.txt
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/autocode/buildflags.h.in
${CMAKE_BINARY_DIR}/buildflags.h)
include_directories(${CMAKE_BINARY_DIR})
在您的代码中
#include "buildflags.h"
这篇关于CMake:以二进制格式存储内部版本/系统信息的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!