git.m6w6.name Git - m6w6/libmemcached/blob - m4/have_cstdint.m4

   1 # ===========================================================================
   2 #     http://tangent.org/
   3 # ===========================================================================
   4 #
   5 # SYNOPSIS
   6 #
   7 #   AX_CXX_CSTDINT()
   8 #
   9 # DESCRIPTION
  10 #
  11 #  Example:
  12 #
  13 # LICENSE
  14 #
  15 #   Copyright (c) 2012 Brian Aker` <brian@tangent.org>
  16 #
  17 #   This program is free software: you can redistribute it and/or modify it
  18 #   under the terms of the GNU General Public License as published by the
  19 #   Free Software Foundation, either version 3 of the License, or (at your
  20 #   option) any later version.
  21 #
  22 #   This program is distributed in the hope that it will be useful, but
  23 #   WITHOUT ANY WARRANTY; without even the implied warranty of
  24 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
  25 #   Public License for more details.
  26 #
  27 #   You should have received a copy of the GNU General Public License along
  28 #   with this program. If not, see <http://www.gnu.org/licenses/>.
  29 #
  30 #   As a special exception, the respective Autoconf Macro's copyright owner
  31 #   gives unlimited permission to copy, distribute and modify the configure
  32 #   scripts that are the output of Autoconf when processing the Macro. You
  33 #   need not follow the terms of the GNU General Public License when using
  34 #   or distributing such scripts, even though portions of the text of the
  35 #   Macro appear in them. The GNU General Public License (GPL) does govern
  36 #   all other use of the material that constitutes the Autoconf Macro.
  37 #
  38 #   This special exception to the GPL applies to versions of the Autoconf
  39 #   Macro released by the Autoconf Archive. When you make and distribute a
  40 #   modified version of the Autoconf Macro, you may extend this special
  41 #   exception to the GPL to apply to your modified version as well.
  42
  43 #serial 4
  44
  45
  46 AC_DEFUN([AX_CXX_CSTDINT], [
  47     AC_REQUIRE([AC_PROG_CXX])
  48     AC_REQUIRE([AC_PROG_CXXCPP])
  49
  50     AC_CACHE_CHECK([for location of cstdint], [ac_cv_cxx_cstdint], [
  51       AC_LANG_PUSH([C++])
  52       AX_SAVE_FLAGS
  53       CXXFLAGS="${CXX_STANDARD} ${CXXFLAGS}"
  54
  55       AC_COMPILE_IFELSE([
  56         AC_LANG_PROGRAM([#include <cstdint>], [
  57         uint32_t t
  58         ])],
  59         [ac_cxx_cstdint_cstdint="<cstdint>"])
  60
  61       AS_IF([test -z "$ac_cxx_cstdint_cstdint"],[
  62             AC_COMPILE_IFELSE([
  63                               AC_LANG_PROGRAM([#include <tr1/cstdint>], [ uint32_t t ])],
  64                               [ac_cxx_cstdint_tr1_cstdint="<tr1/cstdint>"])
  65
  66             AS_IF([test -z "$ac_cxx_cstdint_tr1_cstdint"],[
  67                   AC_COMPILE_IFELSE([
  68                                     AC_LANG_PROGRAM([#include <boost/cstdint.hpp>], [ uint32_t t ])],
  69                                     [ac_cxx_cstdint_boost_cstdint_hpp="<boost/cstdint.hpp>"])
  70                   ])
  71             ])
  72
  73       AC_LANG_POP
  74       AX_RESTORE_FLAGS
  75
  76       AS_IF([test -n "$ac_cxx_cstdint_cstdint"], [ac_cv_cxx_cstdint=$ac_cxx_cstdint_cstdint],
  77         [test -n "$ac_cxx_cstdint_tr1_cstdint"], [ac_cv_cxx_cstdint=$ac_cxx_cstdint_tr1_cstdint],
  78         [test -n "$ac_cxx_cstdint_boost_cstdint_hpp"], [ac_cv_cxx_cstdint=$ac_cxx_cstdint_boost_cstdint_hpp])
  79       ])
  80
  81   AS_IF([test -n "$ac_cv_cxx_cstdint"], [:], [
  82       ac_cv_cxx_cstdint="<stdint.h>"
  83       AC_MSG_WARN([Could not find a cstdint header.])
  84       ])
  85
  86 AC_DEFINE_UNQUOTED([CSTDINT_H],[$ac_cv_cxx_cstdint], [the location of <cstdint>])
  87
  88   ])