查找针对其生成核心转储的可执行文件

Question

有没有一种方法可以将版本信息（例如git commit hash）嵌入到ELF可执行文件中，以便可以从其生成的核心转储中进行检索？

Answer 1

See this question to get the git hash.

Then, change your build procedure (eg your Makefile ) to include it. For instance, generate a one line C file with

  git log --pretty=format:'const char program_git_hash[] = "%H";' \
      -n 1 > _prog_hash.c

then link your program with _prog_hash.c and remove that file after linking. You could add timestamping information with eg

 date +'const char program_timestamp="%c";%n' >> _prog_hash.c

Then you could use gdb or strings on the binary executable to find it.

You may want to declare extern const char program_git_hash[]; in some header file, and perhaps display it (eg when passing the --version option to your program)