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