Even without LTO, linker will discard object files that aren't used (on Linux a ... | Hacker News

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GrumpySloth on May 1, 2021 | parent | context | favorite | on: “Shared libraries are not a good thing in general”

Even without LTO, linker will discard object files that aren't used (on Linux a static library is just an AR archive of object files). It's just a different level of granularity.

floatboth on May 2, 2021 [–]

You can get better granularity – build with -ffunction-sections, link with --gc-sections.

LTO is really a much bigger deal, the main reason to use it is not throwing unused stuff away, but inlining across all the things.

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