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Re: [tor-bugs] #20235 [Core Tor/Tor]: Configure misidentifies clock_gettime and getentropy on macOS Sierra/XCode8 when compiling for iOS 8
#20235: Configure misidentifies clock_gettime and getentropy on macOS Sierra/XCode8
when compiling for iOS 8
-------------------------------------------------+-------------------------
Reporter: rainwolf | Owner:
Type: defect | Status: new
Priority: Medium | Milestone: Tor:
| 0.2.9.x-final
Component: Core Tor/Tor | Version: Tor:
| 0.2.8.8
Severity: Normal | Resolution:
Keywords: Sierra, XCode 8, clock_gettime, | Actual Points:
getentropy, libSystem.dylib 028-backport osx |
Parent ID: | Points:
Reviewer: | Sponsor:
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Comment (by rainwolf):
Replying to [comment:1 nickm]:
They mention [https://github.com/Homebrew/homebrew-core/issues/3727 here]
that the new linker flag `-Wl,-no_weak_imports` should fail to link if the
link would be a leak link. (This happens when you use the Apple-supplied
headers and they indicate the symbol was added after your current
deployment target.)
This should cause the tests for `clock_gettime` and `getentropy` to fail
correctly if you were to target an OS version that doesn't supply them.
> (#20241 is related to this, but not the same.)
>
> Does Apple provide a general way to target a specific version of their
APIs, other than downgrading your developer tools?
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20235#comment:3>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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