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1 | # =========================================================================== |
2 | # http://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 2 | |
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 | ]) |