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| 1 | +# =========================================================================== |
| 2 | +# http://www.gnu.org/software/autoconf-archive/ax_prog_cc_for_build.html |
| 3 | +# =========================================================================== |
| 4 | +# |
| 5 | +# SYNOPSIS |
| 6 | +# |
| 7 | +# AX_PROG_CC_FOR_BUILD |
| 8 | +# |
| 9 | +# DESCRIPTION |
| 10 | +# |
| 11 | +# This macro searches for a C compiler that generates native executables, |
| 12 | +# that is a C compiler that surely is not a cross-compiler. This can be |
| 13 | +# useful if you have to generate source code at compile-time like for |
| 14 | +# example GCC does. |
| 15 | +# |
| 16 | +# The macro sets the CC_FOR_BUILD and CPP_FOR_BUILD macros to anything |
| 17 | +# needed to compile or link (CC_FOR_BUILD) and preprocess (CPP_FOR_BUILD). |
| 18 | +# The value of these variables can be overridden by the user by specifying |
| 19 | +# a compiler with an environment variable (like you do for standard CC). |
| 20 | +# |
| 21 | +# It also sets BUILD_EXEEXT and BUILD_OBJEXT to the executable and object |
| 22 | +# file extensions for the build platform, and GCC_FOR_BUILD to `yes' if |
| 23 | +# the compiler we found is GCC. All these variables but GCC_FOR_BUILD are |
| 24 | +# substituted in the Makefile. |
| 25 | +# |
| 26 | +# LICENSE |
| 27 | +# |
| 28 | +# Copyright (c) 2008 Paolo Bonzini <bonzini@gnu.org> |
| 29 | +# |
| 30 | +# Copying and distribution of this file, with or without modification, are |
| 31 | +# permitted in any medium without royalty provided the copyright notice |
| 32 | +# and this notice are preserved. This file is offered as-is, without any |
| 33 | +# warranty. |
| 34 | + |
| 35 | +#serial 8 |
| 36 | + |
| 37 | +AU_ALIAS([AC_PROG_CC_FOR_BUILD], [AX_PROG_CC_FOR_BUILD]) |
| 38 | +AC_DEFUN([AX_PROG_CC_FOR_BUILD], [dnl |
| 39 | +AC_REQUIRE([AC_PROG_CC])dnl |
| 40 | +AC_REQUIRE([AC_PROG_CPP])dnl |
| 41 | +AC_REQUIRE([AC_EXEEXT])dnl |
| 42 | +AC_REQUIRE([AC_CANONICAL_HOST])dnl |
| 43 | +
|
| 44 | +dnl Use the standard macros, but make them use other variable names |
| 45 | +dnl |
| 46 | +pushdef([ac_cv_prog_CPP], ac_cv_build_prog_CPP)dnl |
| 47 | +pushdef([ac_cv_prog_gcc], ac_cv_build_prog_gcc)dnl |
| 48 | +pushdef([ac_cv_prog_cc_works], ac_cv_build_prog_cc_works)dnl |
| 49 | +pushdef([ac_cv_prog_cc_cross], ac_cv_build_prog_cc_cross)dnl |
| 50 | +pushdef([ac_cv_prog_cc_g], ac_cv_build_prog_cc_g)dnl |
| 51 | +pushdef([ac_cv_exeext], ac_cv_build_exeext)dnl |
| 52 | +pushdef([ac_cv_objext], ac_cv_build_objext)dnl |
| 53 | +pushdef([ac_exeext], ac_build_exeext)dnl |
| 54 | +pushdef([ac_objext], ac_build_objext)dnl |
| 55 | +pushdef([CC], CC_FOR_BUILD)dnl |
| 56 | +pushdef([CPP], CPP_FOR_BUILD)dnl |
| 57 | +pushdef([CFLAGS], CFLAGS_FOR_BUILD)dnl |
| 58 | +pushdef([CPPFLAGS], CPPFLAGS_FOR_BUILD)dnl |
| 59 | +pushdef([LDFLAGS], LDFLAGS_FOR_BUILD)dnl |
| 60 | +pushdef([host], build)dnl |
| 61 | +pushdef([host_alias], build_alias)dnl |
| 62 | +pushdef([host_cpu], build_cpu)dnl |
| 63 | +pushdef([host_vendor], build_vendor)dnl |
| 64 | +pushdef([host_os], build_os)dnl |
| 65 | +pushdef([ac_cv_host], ac_cv_build)dnl |
| 66 | +pushdef([ac_cv_host_alias], ac_cv_build_alias)dnl |
| 67 | +pushdef([ac_cv_host_cpu], ac_cv_build_cpu)dnl |
| 68 | +pushdef([ac_cv_host_vendor], ac_cv_build_vendor)dnl |
| 69 | +pushdef([ac_cv_host_os], ac_cv_build_os)dnl |
| 70 | +pushdef([ac_cpp], ac_build_cpp)dnl |
| 71 | +pushdef([ac_compile], ac_build_compile)dnl |
| 72 | +pushdef([ac_link], ac_build_link)dnl |
| 73 | +
|
| 74 | +save_cross_compiling=$cross_compiling |
| 75 | +save_ac_tool_prefix=$ac_tool_prefix |
| 76 | +cross_compiling=no |
| 77 | +ac_tool_prefix= |
| 78 | +
|
| 79 | +AC_PROG_CC |
| 80 | +AC_PROG_CPP |
| 81 | +AC_EXEEXT |
| 82 | +
|
| 83 | +ac_tool_prefix=$save_ac_tool_prefix |
| 84 | +cross_compiling=$save_cross_compiling |
| 85 | +
|
| 86 | +dnl Restore the old definitions |
| 87 | +dnl |
| 88 | +popdef([ac_link])dnl |
| 89 | +popdef([ac_compile])dnl |
| 90 | +popdef([ac_cpp])dnl |
| 91 | +popdef([ac_cv_host_os])dnl |
| 92 | +popdef([ac_cv_host_vendor])dnl |
| 93 | +popdef([ac_cv_host_cpu])dnl |
| 94 | +popdef([ac_cv_host_alias])dnl |
| 95 | +popdef([ac_cv_host])dnl |
| 96 | +popdef([host_os])dnl |
| 97 | +popdef([host_vendor])dnl |
| 98 | +popdef([host_cpu])dnl |
| 99 | +popdef([host_alias])dnl |
| 100 | +popdef([host])dnl |
| 101 | +popdef([LDFLAGS])dnl |
| 102 | +popdef([CPPFLAGS])dnl |
| 103 | +popdef([CFLAGS])dnl |
| 104 | +popdef([CPP])dnl |
| 105 | +popdef([CC])dnl |
| 106 | +popdef([ac_objext])dnl |
| 107 | +popdef([ac_exeext])dnl |
| 108 | +popdef([ac_cv_objext])dnl |
| 109 | +popdef([ac_cv_exeext])dnl |
| 110 | +popdef([ac_cv_prog_cc_g])dnl |
| 111 | +popdef([ac_cv_prog_cc_cross])dnl |
| 112 | +popdef([ac_cv_prog_cc_works])dnl |
| 113 | +popdef([ac_cv_prog_gcc])dnl |
| 114 | +popdef([ac_cv_prog_CPP])dnl |
| 115 | +
|
| 116 | +dnl Finally, set Makefile variables |
| 117 | +dnl |
| 118 | +BUILD_EXEEXT=$ac_build_exeext |
| 119 | +BUILD_OBJEXT=$ac_build_objext |
| 120 | +AC_SUBST(BUILD_EXEEXT)dnl |
| 121 | +AC_SUBST(BUILD_OBJEXT)dnl |
| 122 | +AC_SUBST([CFLAGS_FOR_BUILD])dnl |
| 123 | +AC_SUBST([CPPFLAGS_FOR_BUILD])dnl |
| 124 | +AC_SUBST([LDFLAGS_FOR_BUILD])dnl |
| 125 | +]) |
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