Bug 14743 – clock_gettime et al from -lrt always bring in libpthread

Bug 14743 - clock_gettime et al from -lrt always bring in libpthread


Summary:	clock_gettime et al from -lrt always bring in libpthread

Status:	RESOLVED FIXED

Product:	glibc
Classification:	Unclassified
Component:	libc
Version:	2.17

Importance:	P2 normal
Target Milestone:	---
Assigned To:	Roland McGrath

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Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2012-10-19 18:36 UTC by Roland McGrath
Modified:	2013-01-15 14:34 UTC (History)
CC List:	3 users (show)

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Description Roland McGrath 2012-10-19 18:36:40 UTC

Just using clock_gettime in a dynamically linked program requires -lrt.
librt.so depends on libpthread.so, so such programs wind up loading libpthread
even if they have no need for it.  This enables libstdc++ locking code and the
like, slowing down single-threaded programs that only wanted clock_* calls.

Comment 1 Roland McGrath 2012-10-24 21:53:14 UTC

Implemented.  Cannot be backported.

Comment 2 Andreas Schwab 2013-01-15 14:34:56 UTC

*** Bug 14304 has been marked as a duplicate of this bug. ***