git.m6w6.name Git - awesomized/libmemcached/blob - m4/pandora_pthread.m4

   1 dnl -*- mode: m4; c-basic-offset: 2; indent-tabs-mode: nil; -*-
   2 dnl vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   3 dnl
   4 dnl pandora-build: A pedantic build system
   5 dnl Copyright (C) 2009 Sun Microsystems, Inc.
   6 dnl This file is free software; Sun Microsystems
   7 dnl gives unlimited permission to copy and/or distribute it,
   8 dnl with or without modifications, as long as this notice is preserved.
   9 dnl
  10 dnl From Monty Taylor
  11
  12
  13 dnl --------------------------------------------------------------------
  14 dnl  Check for libpthread
  15 dnl --------------------------------------------------------------------
  16
  17 AC_DEFUN([PANDORA_PTHREAD_YIELD],[
  18   AC_REQUIRE([ACX_PTHREAD])
  19
  20   save_CFLAGS="${CFLAGS}"
  21   save_CXXFLAGS="${CXXFLAGS}"
  22   CFLAGS="${PTHREAD_CFLAGS} ${CFLAGS}"
  23   CXXFLAGS="${PTHREAD_CFLAGS} ${CXXFLAGS}"
  24   dnl Some OSes like Mac OS X have that as a replacement for pthread_yield()
  25   AC_CHECK_FUNCS(pthread_yield_np)
  26   AC_CACHE_CHECK([if pthread_yield takes zero arguments],
  27     [pandora_cv_pthread_yield_zero_arg],
  28     [AC_LINK_IFELSE([
  29       AC_LANG_PROGRAM([[
  30 #include <pthread.h>
  31         ]],[[
  32   pthread_yield();
  33         ]])],
  34       [pandora_cv_pthread_yield_zero_arg=yes],
  35       [pandora_cv_pthread_yield_zero_arg=no])])
  36   AS_IF([test "$pandora_cv_pthread_yield_zero_arg" = "yes"],[
  37     AC_DEFINE([HAVE_PTHREAD_YIELD_ZERO_ARG], [1],
  38               [pthread_yield that doesn't take any arguments])
  39   ])
  40
  41   AC_CACHE_CHECK([if pthread_yield takes one argument],
  42     [pandora_cv_pthread_yield_one_arg],
  43     [AC_LINK_IFELSE([
  44       AC_LANG_PROGRAM([[
  45 #include <pthread.h>
  46         ]],[[
  47   pthread_yield(0);
  48         ]])],
  49       [pandora_cv_pthread_yield_one_arg=yes],
  50       [pandora_cv_pthread_yield_one_arg=no])])
  51   AS_IF([test "$pandora_cv_pthread_yield_one_arg" = "yes"],[
  52     AC_DEFINE([HAVE_PTHREAD_YIELD_ONE_ARG], [1],
  53               [pthread_yield function with one argument])
  54   ])
  55
  56   CFLAGS="${save_CFLAGS}"
  57   CXXFLAGS="${save_CXXFLAGS}"
  58 ])
  59
  60
  61 AC_DEFUN([_PANDORA_SEARCH_PTHREAD],[
  62   AC_REQUIRE([ACX_PTHREAD])
  63   LIBS="${PTHREAD_LIBS} ${LIBS}"
  64   AM_CFLAGS="${PTHREAD_CFLAGS} ${AM_CFLAGS}"
  65   AM_CXXFLAGS="${PTHREAD_CFLAGS} ${AM_CXXFLAGS}"
  66   PANDORA_PTHREAD_YIELD
  67 ])
  68
  69
  70 AC_DEFUN([PANDORA_HAVE_PTHREAD],[
  71   AC_REQUIRE([_PANDORA_SEARCH_PTHREAD])
  72 ])
  73
  74 AC_DEFUN([PANDORA_REQUIRE_PTHREAD],[
  75   AC_REQUIRE([PANDORA_HAVE_PTHREAD])
  76   AS_IF([test "x$acx_pthread_ok" != "xyes"],[
  77     AC_MSG_ERROR(could not find libpthread)])
  78 ])