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# clock_time.m4 serial 10
dnl Copyright (C) 2002-2006, 2009-2015 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
# Check for clock_gettime and clock_settime, and set LIB_CLOCK_GETTIME.
# For a program named, say foo, you should add a line like the following
# in the corresponding file:
dnl Persuade glibc and Solaris <time.h> to declare these functions.
# Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
# Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
# Save and restore LIBS so e.g., -lrt, isn't added to it. Otherwise, *all*
# programs in the package would end up linked with that potentially-shared
# library, inducing unnecessary run-time overhead.
AC_SEARCH_LIBS([clock_gettime], [rt posix4],
[test "$ac_cv_search_clock_gettime" = "none required" ||
AC_CHECK_FUNCS([clock_gettime clock_settime])
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