Thread: How to view program version number ?

  1. #1
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    How to view program version number ?

    I wrote a C program for both Linux and Windows.
    I use Git to store versions of the code.
    Is there a way to have the program version displayed when I start it ? Can you tell me how to write these lines of code ?

    To know the current version of the written code, from bash just write:
    Code:
    git describe --abbrev = 4 --always --tags

  2. #2
    and the hat of int overfl Salem's Avatar
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    In your makefile (or some pre-build step), do
    Code:
    echo 'const char *version="'$(git describe --abbrev = 4 --always --tags)'";"' > version_info.c
    Then compile and link with that file, with an 'extern const char *version;' and 'printf("Version=%s\n", version);'
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

  3. #3
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    Thank Salem.
    Correct
    Code:
    echo 'const char *version = "'$(shell git describe --abbrev=4 --always --tags)'";' > version_info.c

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