libusb: version symbols
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Authored by bapt on Mar 6 2026, 8:09 AM.

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imp

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emaste

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USB

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rG FreeBSD src repository

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Buildable 71220
Build 68103: arc lint + arc unit

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bapt created this revision.Mar 6 2026, 8:09 AM

Herald added a subscriber: imp. · View Herald TranscriptMar 6 2026, 8:09 AM

bapt requested review of this revision.Mar 6 2026, 8:09 AM

Harbormaster completed remote builds in B71220: Diff 173255.Mar 6 2026, 8:09 AM

bapt added a child revision: D55687: libusb: make hotplug callback handle an int.Mar 6 2026, 8:09 AM

bapt added reviewers: USB, emaste.Mar 6 2026, 8:10 AM

Adding symbol versions to the library changes the library ABI. This requires the (final) bump of the dso version.

Our rtld has a feature that in theory makes the bump not strictly necessary, but it is recommended anyway, because it improves forward-compatibility by avoiding very confusing error message from rtld when newly linked binary is used with old library without versioning.

lib/libusb/Symbol.map
3	You are mixing the raw linker version script syntax there, with our pre-processed Symbol.map. There is no need in the scope specifiers.
251	All symbols not explicitly listed in the Symbol.map with FreeBSD syntax, are automatically localized AKA not exported.