pthread, pthread_sigmask, threadlib: port to Ubuntu 14.04 Problem reported by Assaf Gordon in: http://lists.gnu.org/archive/html/bug-gnulib/2014-09/msg00023.html Apparently Ubuntu is doing some fancy link-time optimization that doesn't work with -lpthread but does work with -pthread. Work around the bug by preferring -pthread to -lpthread. This change affects only LIBS, not CFLAGS, which is a little weird, but it works. * m4/pthread.m4 (gl_PTHREAD_CHECK): * m4/threadlib.m4 (gl_THREADLIB_BODY): Prefer -pthread to -lpthread. * m4/pthread_sigmask.m4 (gl_FUNC_PTHREAD_SIGMASK): Treat -pthread like -lpthread.

# strptime.m4 serial 7
dnl Copyright (C) 2007, 2009-2014 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.

AC_DEFUN([gl_FUNC_STRPTIME],
[
  AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
  AC_REQUIRE([AC_C_RESTRICT])
  AC_CHECK_FUNCS_ONCE([strptime])
  if test $ac_cv_func_strptime != yes; then
    HAVE_STRPTIME=0
  fi
])

# Prerequisites of lib/strptime.c.
AC_DEFUN([gl_PREREQ_STRPTIME],
[
  AC_REQUIRE([gl_TM_GMTOFF])
  :
])