# vim:ft=m4
# ===========================================================================
#     http://tangent.org/
# ===========================================================================
#
# SYNOPSIS
#
#   AX_CXX_CINTTYPES
#
# DESCRIPTION
#
#  Example:
#
# LICENSE
#
#   Copyright (c) 2012 Brian Aker` <brian@tangent.org>
#
#   This program is free software: you can redistribute it and/or modify it
#   under the terms of the GNU General Public License as published by the
#   Free Software Foundation, either version 3 of the License, or (at your
#   option) any later version.
#
#   This program is distributed in the hope that it will be useful, but
#   WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
#   Public License for more details.
#
#   You should have received a copy of the GNU General Public License along
#   with this program. If not, see <http://www.gnu.org/licenses/>.
#
#   As a special exception, the respective Autoconf Macro's copyright owner
#   gives unlimited permission to copy, distribute and modify the configure
#   scripts that are the output of Autoconf when processing the Macro. You
#   need not follow the terms of the GNU General Public License when using
#   or distributing such scripts, even though portions of the text of the
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#   all other use of the material that constitutes the Autoconf Macro.
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#   exception to the GPL to apply to your modified version as well.

#serial 1


AC_DEFUN([AX_CXX_CINTTYPES],
    [
    AC_REQUIRE([AC_PROG_CXX])
    AC_REQUIRE([AC_PROG_CXXCPP])
    AC_REQUIRE([AX_CXX_CSTDINT])
    AC_MSG_CHECKING(the location of cinttypes)
    save_CXXFLAGS="${CXXFLAGS}"
    CXXFLAGS="${CXX_STANDARD} ${CXXFLAGS}"
    ac_cv_cxx_cinttypes=""

    AC_LANG_PUSH([C++])
#    AC_CACHE_CHECK([for location of cinttypes], [ac_cv_cxx_cinttypes],
#      [
# Look for cinttypes
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <cinttypes>], [ uint32_t foo= UINT32_C(1) ])],
        [ac_cv_cxx_cinttypes="<cinttypes>"],
        [
# Look for tr1/cinttypes
        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <tr1/cinttypes>], [ uint32_t foo= UINT32_C(1) ])],
          [ac_cv_cxx_cinttypes="<tr1/cinttypes>"],
          [
# Look for boost/cinttypes.hpp
          AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <boost/cinttypes.hpp>], [ uint32_t foo= UINT32_C(1) ])],
            [ac_cv_cxx_cinttypes="<boost/cinttypes.hpp>"])
          ])
        ])
#      ])
  AC_LANG_POP()

  CXXFLAGS="${save_CXXFLAGS}"
  if test -n "$ac_cv_cxx_cinttypes"; then
    AC_MSG_RESULT([$ac_cv_cxx_cinttypes])
  else
    ac_cv_cxx_cinttypes="<inttypes.h>"
    AC_MSG_WARN([Could not find a cinttypes header.])
    AC_MSG_RESULT([$ac_cv_cxx_cinttypes])
  fi

  AC_DEFINE([__STDC_LIMIT_MACROS],[1],[Use STDC Limit Macros in C++])
  AC_DEFINE_UNQUOTED(CINTTYPES_H,$ac_cv_cxx_cinttypes, [the location of <cinttypes>])
  ])