如何将git commit-number包含到c ++可执行文件中？ [英] how to include git commit-number into a c++ executable?

问题描述

我使用git作为我的c ++项目的版本跟踪器。

i use git as a version tracker for my c++ project.

有时我需要重复计算，我想知道我使用的是哪个版本的程序。

sometimes i need to repeat a calculation and i would like to know which version of the program i used.

将一个＃提交到主可执行文件中的好方法是什么？换一种说法。我希望程序在运行程序时告诉我当前提交的消息的内容。

what would be a good way to put a # of the commit into the main executable? in other words. i'd like the program to tell me the # of the current commit in an introductory message as i run the program.

我能想到的一种方法是使c ++程序午餐git log从shell中提取提交＃但我不知道如何在make过程中做到这一点。

one way i can think of is to make the c++ program lunch "git log" from shell and extract the commit # but i'm not sure how to do it during make.

（我使用linux）

推荐答案

也许这样做会添加到您的Makefile的规则来产生与当前的git提交ID .c文件的最简单方法：

Probably the easiest way to do this would be to add to your makefile a rule to generate a .c file with the current git commit ID:

gitversion.c: .git/HEAD .git/index
    echo "const char *gitversion = \"$(shell git rev-parse HEAD)\";" > $@

现在只需添加 gitversion.c 到正常的构建过程。确保在 make clean 中删除​​它，并将它添加到 .gitignore 中，以免它偶然添加到git存储库。在某处添加一个 extern const char * gitversion; 标题，并且可以像这样访问它。

Now simply add gitversion.c to your build process as normal. Make sure to remove it on make clean, and add it to .gitignore so it's not added to the git repository accidentally. Add an extern const char *gitversion; to a header somewhere, and you can access it like that.

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