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

   1 #   ===========================================================================
   2 #   https://github.com/BrianAker/ddm4/
   3 #   ===========================================================================
   4 #
   5 # SYNOPSIS
   6 #
   7 #   AX_PRINTF_STRERROR()
   8 #
   9 # DESCRIPTION
  10 #
  11 #   Check to see if printf() has %m implemented (i.e. can handle strerror
  12 #   internally)
  13 #
  14 # LICENSE
  15 #
  16 #  Copyright (C) 2013 Brian Aker All rights reserved.
  17 #
  18 #  Redistribution and use in source and binary forms, with or without
  19 #  modification, are permitted provided that the following conditions are
  20 #  met:
  21 #
  22 #      * Redistributions of source code must retain the above copyright
  23 #  notice, this list of conditions and the following disclaimer.
  24 #
  25 #      * Redistributions in binary form must reproduce the above
  26 #  copyright notice, this list of conditions and the following disclaimer
  27 #  in the documentation and/or other materials provided with the
  28 #  distribution.
  29 #
  30 #      * The names of its contributors may not be used to endorse or
  31 #  promote products derived from this software without specific prior
  32 #  written permission.
  33 #
  34 #  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  35 #  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  36 #  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  37 #  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  38 #  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  39 #  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  40 #  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  41 #  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  42 #  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  43 #  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  44 #  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  45
  46 #serial 2
  47
  48 AC_DEFUN([AX_PRINTF_STRERROR],
  49          [AC_PREREQ([2.63])dnl
  50          AC_CACHE_CHECK([printf() has strerror option],
  51          [ax_cv_have_printf_strerror],
  52          [AC_LANG_PUSH([C++])
  53          AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <cstdio>
  54                         #include <cstddef>
  55                         #include <cstdlib>
  56                         #include <cstring>
  57                         #include <cerrno>
  58                         ]],
  59                         [[char buffer[1024]; errno=0; snprintf(buffer, sizeof(buffer), "%m"); if (strcmp("Success", buffer) !=0 ) return EXIT_FAILURE;]])],
  60                         [ax_cv_have_printf_strerror=yes],
  61                         [ax_cv_have_printf_strerror=no],
  62                         [ax_cv_have_printf_strerror=no])
  63          AC_LANG_POP])
  64          AC_MSG_RESULT(["$ax_cv_have_printf_strerror"])
  65          AS_IF([test "x$ax_cv_have_printf_strerror" = xyes],
  66                [AC_DEFINE([HAVE_PRINTF_STRERROR],[1],[define if printf supports directly print errno])])
  67          ])