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-rw-r--r--m4/ax_prog_cxx_for_build.m4109
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diff --git a/m4/ax_prog_cxx_for_build.m4 b/m4/ax_prog_cxx_for_build.m4
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--- a/m4/ax_prog_cxx_for_build.m4
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@@ -1,109 +0,0 @@
-# ===========================================================================
-# http://www.gnu.org/software/autoconf-archive/ax_prog_cxx_for_build.html
-# ===========================================================================
-#
-# SYNOPSIS
-#
-# AX_PROG_CXX_FOR_BUILD
-#
-# DESCRIPTION
-#
-# This macro searches for a C++ compiler that generates native executables,
-# that is a C++ compiler that surely is not a cross-compiler. This can be
-# useful if you have to generate source code at compile-time like for
-# example GCC does.
-#
-# The macro sets the CXX_FOR_BUILD and CXXCPP_FOR_BUILD macros to anything
-# needed to compile or link (CXX_FOR_BUILD) and preprocess (CXXCPP_FOR_BUILD).
-# The value of these variables can be overridden by the user by specifying
-# a compiler with an environment variable (like you do for standard CXX).
-#
-# LICENSE
-#
-# Copyright (c) 2008 Paolo Bonzini <bonzini@gnu.org>
-# Copyright (c) 2012 Avionic Design GmbH
-#
-# Based on the AX_PROG_CC_FOR_BUILD macro by Paolo Bonzini.
-#
-# Copying and distribution of this file, with or without modification, are
-# permitted in any medium without royalty provided the copyright notice
-# and this notice are preserved. This file is offered as-is, without any
-# warranty.
-
-#serial 5
-
-AU_ALIAS([AC_PROG_CXX_FOR_BUILD], [AX_PROG_CXX_FOR_BUILD])
-AC_DEFUN([AX_PROG_CXX_FOR_BUILD], [dnl
-AC_REQUIRE([AX_PROG_CC_FOR_BUILD])dnl
-AC_REQUIRE([AC_PROG_CXX])dnl
-AC_REQUIRE([AC_PROG_CXXCPP])dnl
-AC_REQUIRE([AC_CANONICAL_SYSTEM])dnl
-
-dnl Use the standard macros, but make them use other variable names
-dnl
-pushdef([ac_cv_prog_CXXCPP], ac_cv_build_prog_CXXCPP)dnl
-pushdef([ac_cv_prog_gxx], ac_cv_build_prog_gxx)dnl
-pushdef([ac_cv_prog_cxx_works], ac_cv_build_prog_cxx_works)dnl
-pushdef([ac_cv_prog_cxx_cross], ac_cv_build_prog_cxx_cross)dnl
-pushdef([ac_cv_prog_cxx_g], ac_cv_build_prog_cxx_g)dnl
-pushdef([CXX], CXX_FOR_BUILD)dnl
-pushdef([CXXCPP], CXXCPP_FOR_BUILD)dnl
-pushdef([CXXFLAGS], CXXFLAGS_FOR_BUILD)dnl
-pushdef([CPPFLAGS], CPPFLAGS_FOR_BUILD)dnl
-pushdef([CXXCPPFLAGS], CXXCPPFLAGS_FOR_BUILD)dnl
-pushdef([host], build)dnl
-pushdef([host_alias], build_alias)dnl
-pushdef([host_cpu], build_cpu)dnl
-pushdef([host_vendor], build_vendor)dnl
-pushdef([host_os], build_os)dnl
-pushdef([ac_cv_host], ac_cv_build)dnl
-pushdef([ac_cv_host_alias], ac_cv_build_alias)dnl
-pushdef([ac_cv_host_cpu], ac_cv_build_cpu)dnl
-pushdef([ac_cv_host_vendor], ac_cv_build_vendor)dnl
-pushdef([ac_cv_host_os], ac_cv_build_os)dnl
-pushdef([ac_cxxcpp], ac_build_cxxcpp)dnl
-pushdef([ac_compile], ac_build_compile)dnl
-pushdef([ac_link], ac_build_link)dnl
-
-save_cross_compiling=$cross_compiling
-save_ac_tool_prefix=$ac_tool_prefix
-cross_compiling=no
-ac_tool_prefix=
-
-AC_PROG_CXX
-AC_PROG_CXXCPP
-
-ac_tool_prefix=$save_ac_tool_prefix
-cross_compiling=$save_cross_compiling
-
-dnl Restore the old definitions
-dnl
-popdef([ac_link])dnl
-popdef([ac_compile])dnl
-popdef([ac_cxxcpp])dnl
-popdef([ac_cv_host_os])dnl
-popdef([ac_cv_host_vendor])dnl
-popdef([ac_cv_host_cpu])dnl
-popdef([ac_cv_host_alias])dnl
-popdef([ac_cv_host])dnl
-popdef([host_os])dnl
-popdef([host_vendor])dnl
-popdef([host_cpu])dnl
-popdef([host_alias])dnl
-popdef([host])dnl
-popdef([CXXCPPFLAGS])dnl
-popdef([CPPFLAGS])dnl
-popdef([CXXFLAGS])dnl
-popdef([CXXCPP])dnl
-popdef([CXX])dnl
-popdef([ac_cv_prog_cxx_g])dnl
-popdef([ac_cv_prog_cxx_cross])dnl
-popdef([ac_cv_prog_cxx_works])dnl
-popdef([ac_cv_prog_gxx])dnl
-popdef([ac_cv_prog_CXXCPP])dnl
-
-dnl Finally, set Makefile variables
-dnl
-AC_SUBST([CXXFLAGS_FOR_BUILD])dnl
-AC_SUBST([CXXCPPFLAGS_FOR_BUILD])dnl
-])