Bug 414047

Summary:	sys-fs/udev-182: build fails on uClibc due to missing -lrt for mq_getattr
Product:	Gentoo Linux	Reporter:	SpanKY <vapier>
Component:	[OLD] Core system	Assignee:	udev maintainers <udev-bugs>
Status:	RESOLVED FIXED
Severity:	normal	CC:	chewi, embedded
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description SpanKY gentoo-dev

2012-04-30 04:14:12 UTC

# emerge udev
...
  CCLD   udevd
src/udevd-sd-daemon.o: In function `sd_is_mq':
sd-daemon.c:(.text+0x248): undefined reference to `mq_getattr'
collect2: ld returned 1 exit status
make[2]: *** [udevd] Error 1

this is because it looks for clock_gettime like so:
configure.ac:
AC_SEARCH_LIBS([clock_gettime], [rt], [], [AC_MSG_ERROR([POSIX RT library not found])])

uClibc puts clock_gettime() into libc, so there is no implicit rt for mq_getattr.  this is acceptable behavior according to POSIX, so udev should have similar code:
AC_SEARCH_LIBS([mq_getattr], [rt], [], [AC_MSG_ERROR([POSIX RT library not found])])

Comment 1 James Le Cuirot gentoo-dev

2012-07-23 21:06:02 UTC

This doesn't seem to be a problem any more, at least as of 186, but it does have other problems.

Comment 2 William Hubbs gentoo-dev

2012-07-24 15:04:02 UTC

Closing since this is fixed in 186.