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@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 4 35 36AU_ALIAS([AC_PROG_CXX_FOR_BUILD], [AX_PROG_CXX_FOR_BUILD]) 37AC_DEFUN([AX_PROG_CXX_FOR_BUILD], [dnl 38AC_REQUIRE([AX_PROG_CC_FOR_BUILD])dnl 39AC_REQUIRE([AC_PROG_CXX])dnl 40AC_REQUIRE([AC_PROG_CXXCPP])dnl 41AC_REQUIRE([AC_CANONICAL_HOST])dnl 42 43dnl Use the standard macros, but make them use other variable names 44dnl 45pushdef([ac_cv_prog_CXXCPP], ac_cv_build_prog_CXXCPP)dnl 46pushdef([ac_cv_prog_gxx], ac_cv_build_prog_gxx)dnl 47pushdef([ac_cv_prog_cxx_works], ac_cv_build_prog_cxx_works)dnl 48pushdef([ac_cv_prog_cxx_cross], ac_cv_build_prog_cxx_cross)dnl 49pushdef([ac_cv_prog_cxx_g], ac_cv_build_prog_cxx_g)dnl 50pushdef([CXX], CXX_FOR_BUILD)dnl 51pushdef([CXXCPP], CXXCPP_FOR_BUILD)dnl 52pushdef([GXX], GXX_FOR_BUILD)dnl 53pushdef([CXXFLAGS], CXXFLAGS_FOR_BUILD)dnl 54pushdef([CPPFLAGS], CPPFLAGS_FOR_BUILD)dnl 55pushdef([CXXCPPFLAGS], CXXCPPFLAGS_FOR_BUILD)dnl 56pushdef([host], build)dnl 57pushdef([host_alias], build_alias)dnl 58pushdef([host_cpu], build_cpu)dnl 59pushdef([host_vendor], build_vendor)dnl 60pushdef([host_os], build_os)dnl 61pushdef([ac_cv_host], ac_cv_build)dnl 62pushdef([ac_cv_host_alias], ac_cv_build_alias)dnl 63pushdef([ac_cv_host_cpu], ac_cv_build_cpu)dnl 64pushdef([ac_cv_host_vendor], ac_cv_build_vendor)dnl 65pushdef([ac_cv_host_os], ac_cv_build_os)dnl 66pushdef([ac_tool_prefix], ac_build_tool_prefix)dnl 67pushdef([am_cv_CXX_dependencies_compiler_type], am_cv_build_CXX_dependencies_compiler_type)dnl 68pushdef([cross_compiling], cross_compiling_build)dnl 69 70cross_compiling_build=no 71 72ac_build_tool_prefix= 73AS_IF([test -n "$build"], [ac_build_tool_prefix="$build-"], 74 [test -n "$build_alias"],[ac_build_tool_prefix="$build_alias-"]) 75 76AC_LANG_PUSH([C++]) 77AC_PROG_CXX 78AC_PROG_CXXCPP 79 80dnl Restore the old definitions 81dnl 82popdef([cross_compiling])dnl 83popdef([am_cv_CXX_dependencies_compiler_type])dnl 84popdef([ac_tool_prefix])dnl 85popdef([ac_cv_host_os])dnl 86popdef([ac_cv_host_vendor])dnl 87popdef([ac_cv_host_cpu])dnl 88popdef([ac_cv_host_alias])dnl 89popdef([ac_cv_host])dnl 90popdef([host_os])dnl 91popdef([host_vendor])dnl 92popdef([host_cpu])dnl 93popdef([host_alias])dnl 94popdef([host])dnl 95popdef([CXXCPPFLAGS])dnl 96popdef([CPPFLAGS])dnl 97popdef([CXXFLAGS])dnl 98popdef([CXXCPP])dnl 99popdef([CXX])dnl 100popdef([ac_cv_prog_cxx_g])dnl 101popdef([ac_cv_prog_cxx_cross])dnl 102popdef([ac_cv_prog_cxx_works])dnl 103popdef([ac_cv_prog_gxx])dnl 104popdef([ac_cv_prog_CXXCPP])dnl 105 106dnl restore global variables (dependant on the current 107dnl language after popping): 108AC_LANG_POP([C++]) 109 110dnl Finally, set Makefile variables 111dnl 112AC_SUBST([CXXFLAGS_FOR_BUILD])dnl 113AC_SUBST([CXXCPPFLAGS_FOR_BUILD])dnl 114]) 115