1 # =========================================================================== 2 # https://www.gnu.org/software/autoconf-archive/ax_prog_cxx_for_build.html 3 # =========================================================================== 4 # 5 # SYNOPSIS 6 # 7 # AX_PROG_CXX_FOR_BUILD 8 # 9 # DESCRIPTION 10 # 11 # This macro searches for a C++ compiler that generates native 12 # executables, that is a C++ compiler that surely is not a cross-compiler. 13 # This can be useful if you have to generate source code at compile-time 14 # like for example GCC does. 15 # 16 # The macro sets the CXX_FOR_BUILD and CXXCPP_FOR_BUILD macros to anything 17 # needed to compile or link (CXX_FOR_BUILD) and preprocess 18 # (CXXCPP_FOR_BUILD). The value of these variables can be overridden by 19 # the user by specifying a compiler with an environment variable (like you 20 # do for standard CXX). 21 # 22 # LICENSE 23 # 24 # Copyright (c) 2008 Paolo Bonzini <bonzini (a] gnu.org> 25 # Copyright (c) 2012 Avionic Design GmbH 26 # 27 # Based on the AX_PROG_CC_FOR_BUILD macro by Paolo Bonzini. 28 # 29 # Copying and distribution of this file, with or without modification, are 30 # permitted in any medium without royalty provided the copyright notice 31 # and this notice are preserved. This file is offered as-is, without any 32 # warranty. 33 34 #serial 3 35 36 AU_ALIAS([AC_PROG_CXX_FOR_BUILD], [AX_PROG_CXX_FOR_BUILD]) 37 AC_DEFUN([AX_PROG_CXX_FOR_BUILD], [dnl 38 AC_REQUIRE([AX_PROG_CC_FOR_BUILD])dnl 39 AC_REQUIRE([AC_PROG_CXX])dnl 40 AC_REQUIRE([AC_PROG_CXXCPP])dnl 41 AC_REQUIRE([AC_CANONICAL_HOST])dnl 42 43 dnl Use the standard macros, but make them use other variable names 44 dnl 45 pushdef([ac_cv_prog_CXXCPP], ac_cv_build_prog_CXXCPP)dnl 46 pushdef([ac_cv_prog_gxx], ac_cv_build_prog_gxx)dnl 47 pushdef([ac_cv_prog_cxx_works], ac_cv_build_prog_cxx_works)dnl 48 pushdef([ac_cv_prog_cxx_cross], ac_cv_build_prog_cxx_cross)dnl 49 pushdef([ac_cv_prog_cxx_g], ac_cv_build_prog_cxx_g)dnl 50 pushdef([CXX], CXX_FOR_BUILD)dnl 51 pushdef([CXXCPP], CXXCPP_FOR_BUILD)dnl 52 pushdef([CXXFLAGS], CXXFLAGS_FOR_BUILD)dnl 53 pushdef([CPPFLAGS], CPPFLAGS_FOR_BUILD)dnl 54 pushdef([CXXCPPFLAGS], CXXCPPFLAGS_FOR_BUILD)dnl 55 pushdef([host], build)dnl 56 pushdef([host_alias], build_alias)dnl 57 pushdef([host_cpu], build_cpu)dnl 58 pushdef([host_vendor], build_vendor)dnl 59 pushdef([host_os], build_os)dnl 60 pushdef([ac_cv_host], ac_cv_build)dnl 61 pushdef([ac_cv_host_alias], ac_cv_build_alias)dnl 62 pushdef([ac_cv_host_cpu], ac_cv_build_cpu)dnl 63 pushdef([ac_cv_host_vendor], ac_cv_build_vendor)dnl 64 pushdef([ac_cv_host_os], ac_cv_build_os)dnl 65 pushdef([ac_cxxcpp], ac_build_cxxcpp)dnl 66 pushdef([ac_compile], ac_build_compile)dnl 67 pushdef([ac_link], ac_build_link)dnl 68 69 save_cross_compiling=$cross_compiling 70 save_ac_tool_prefix=$ac_tool_prefix 71 cross_compiling=no 72 ac_tool_prefix= 73 74 AC_PROG_CXX 75 AC_PROG_CXXCPP 76 77 ac_tool_prefix=$save_ac_tool_prefix 78 cross_compiling=$save_cross_compiling 79 80 dnl Restore the old definitions 81 dnl 82 popdef([ac_link])dnl 83 popdef([ac_compile])dnl 84 popdef([ac_cxxcpp])dnl 85 popdef([ac_cv_host_os])dnl 86 popdef([ac_cv_host_vendor])dnl 87 popdef([ac_cv_host_cpu])dnl 88 popdef([ac_cv_host_alias])dnl 89 popdef([ac_cv_host])dnl 90 popdef([host_os])dnl 91 popdef([host_vendor])dnl 92 popdef([host_cpu])dnl 93 popdef([host_alias])dnl 94 popdef([host])dnl 95 popdef([CXXCPPFLAGS])dnl 96 popdef([CPPFLAGS])dnl 97 popdef([CXXFLAGS])dnl 98 popdef([CXXCPP])dnl 99 popdef([CXX])dnl 100 popdef([ac_cv_prog_cxx_g])dnl 101 popdef([ac_cv_prog_cxx_cross])dnl 102 popdef([ac_cv_prog_cxx_works])dnl 103 popdef([ac_cv_prog_gxx])dnl 104 popdef([ac_cv_prog_CXXCPP])dnl 105 106 dnl Finally, set Makefile variables 107 dnl 108 AC_SUBST([CXXFLAGS_FOR_BUILD])dnl 109 AC_SUBST([CXXCPPFLAGS_FOR_BUILD])dnl 110 ]) 111
Indexes created Sun Oct 25 00:26:45 UTC 2026