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 (a] 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 ]) 126
