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      1 # =============================================================================
      2 #  https://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx_17.html
      3 # =============================================================================
      4 #
      5 # SYNOPSIS
      6 #
      7 #   AX_CXX_COMPILE_STDCXX_17([ext|noext], [mandatory|optional])
      8 #
      9 # DESCRIPTION
     10 #
     11 #   Check for baseline language coverage in the compiler for the C++17
     12 #   standard; if necessary, add switches to CXX and CXXCPP to enable
     13 #   support.
     14 #
     15 #   This macro is a convenience alias for calling the AX_CXX_COMPILE_STDCXX
     16 #   macro with the version set to C++17.  The two optional arguments are
     17 #   forwarded literally as the second and third argument respectively.
     18 #   Please see the documentation for the AX_CXX_COMPILE_STDCXX macro for
     19 #   more information.  If you want to use this macro, you also need to
     20 #   download the ax_cxx_compile_stdcxx.m4 file.
     21 #
     22 # LICENSE
     23 #
     24 #   Copyright (c) 2015 Moritz Klammler <moritz (a] klammler.eu>
     25 #   Copyright (c) 2016 Krzesimir Nowak <qdlacz (a] gmail.com>
     26 #
     27 #   Copying and distribution of this file, with or without modification, are
     28 #   permitted in any medium without royalty provided the copyright notice
     29 #   and this notice are preserved. This file is offered as-is, without any
     30 #   warranty.
     31 
     32 #serial 2
     33 
     34 AX_REQUIRE_DEFINED([AX_CXX_COMPILE_STDCXX])
     35 AC_DEFUN([AX_CXX_COMPILE_STDCXX_17], [AX_CXX_COMPILE_STDCXX([17], [$1], [$2])])
     36