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Adjust per-platform link libraries #12
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While investigating a sigsegv due to strange linking, I realized that the link libraries that Rust suggests are per platform. This commit adjusts the pkg-config and cmake helpers in a per-platform way. Note that this is brittle. Any change in these flags should be investigated by a human.
This is because if it is present, even if -static-libgcc is provided, then it will be present in the final library runtime dependencies. This is undesirable at least on Alpine Linux, where it may not even be present due to the platform's minimalism.
r1viollet
approved these changes
Jan 3, 2022
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What does this PR do?
Adjusts the per-platform link libraries included in the pkg-config and
cmake helpers.
Motivation
While investigating a sigsegv due to strange linking, I realized that
the link libraries that Rust suggests are per platform.
Additional Notes
This is brittle. Any change in these flags should be investigated by a
human.
How to test the change?
Existing build scripts should still work, although there may now be more
runtime dependencies than before. It's unclear to me how many of these
libraries actually need to be linked at runtime, but I don't have a
good programmatic way of figuring out how to pare it down.