LD_PRELOAD: čo to je a ako to využiť
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geteilt von: https://lemmy.ml/post/38099727

(translated) According to my statistics, the vast majority of my visitors use a Unix-like or Unix operating system. What do these OSs have in common? They all have their own preloader, which is used to load shared libraries.

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  • just_another_person@lemmy.world
    34·
    7 days ago

    It’s an environment variable…

    Does this warrant and entire novel about it if you’re working within external source builds? No.

    In fact, I think you’d be better off writing a deep dive into what/how environment variables work at build time, and also invoking commands on the CLI.

    • Markaos@discuss.tchncs.de
      5·
      5 days ago

      In fact, I think you’d be better off writing a deep dive into what/how environment variables work at build time, and also invoking commands on the CLI.

      But LD_PRELOAD doesn’t really have much to do with build time behavior (unless you’re talking about replacing parts of the compiler) - it allows you to force a shared library to be loaded with higher priority than anything else, so it overrides symbols from other libraries.

      It is recognized and used by Linux’s dynamic linker, which is run-time, not build-time.