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 #modified for strace project 37 38 AU_ALIAS([AC_PROG_CC_FOR_BUILD], [AX_PROG_CC_FOR_BUILD]) 39 AC_DEFUN([AX_PROG_CC_FOR_BUILD], [dnl 40 AC_REQUIRE([AC_PROG_CC])dnl 41 AC_REQUIRE([AC_PROG_CPP])dnl 42 AC_REQUIRE([AC_EXEEXT])dnl 43 AC_REQUIRE([AC_CANONICAL_HOST])dnl 44 45 dnl Use the standard macros, but make them use other variable names 46 dnl 47 pushdef([ac_cv_prog_CPP], ac_cv_build_prog_CPP)dnl 48 pushdef([ac_cv_prog_gcc], ac_cv_build_prog_gcc)dnl 49 pushdef([ac_cv_prog_cc_works], ac_cv_build_prog_cc_works)dnl 50 pushdef([ac_cv_prog_cc_cross], ac_cv_build_prog_cc_cross)dnl 51 pushdef([ac_cv_prog_cc_g], ac_cv_build_prog_cc_g)dnl 52 pushdef([ac_cv_prog_cc_stdc], ac_cv_build_prog_cc_stdc)dnl 53 pushdef([ac_cv_prog_cc_c11], ac_cv_build_prog_cc_c11)dnl 54 pushdef([ac_cv_prog_cc_c99], ac_cv_build_prog_cc_c99)dnl 55 pushdef([ac_cv_prog_cc_c89], ac_cv_build_prog_cc_c89)dnl 56 pushdef([ac_cv_exeext], ac_cv_build_exeext)dnl 57 pushdef([ac_cv_objext], ac_cv_build_objext)dnl 58 pushdef([ac_exeext], ac_build_exeext)dnl 59 pushdef([ac_objext], ac_build_objext)dnl 60 pushdef([CC], CC_FOR_BUILD)dnl 61 pushdef([CPP], CPP_FOR_BUILD)dnl 62 pushdef([CFLAGS], CFLAGS_FOR_BUILD)dnl 63 pushdef([CPPFLAGS], CPPFLAGS_FOR_BUILD)dnl 64 pushdef([LDFLAGS], LDFLAGS_FOR_BUILD)dnl 65 pushdef([WARN_CFLAGS], WARN_CFLAGS_FOR_BUILD)dnl 66 pushdef([host], build)dnl 67 pushdef([host_alias], build_alias)dnl 68 pushdef([host_cpu], build_cpu)dnl 69 pushdef([host_vendor], build_vendor)dnl 70 pushdef([host_os], build_os)dnl 71 pushdef([ac_cv_host], ac_cv_build)dnl 72 pushdef([ac_cv_host_alias], ac_cv_build_alias)dnl 73 pushdef([ac_cv_host_cpu], ac_cv_build_cpu)dnl 74 pushdef([ac_cv_host_vendor], ac_cv_build_vendor)dnl 75 pushdef([ac_cv_host_os], ac_cv_build_os)dnl 76 pushdef([am_cv_prog_cc_c_o], am_cv_build_prog_cc_c_o)dnl 77 pushdef([am_cv_CC_dependencies_compiler_type], am_cv_build_CC_dependencies_compiler_type)dnl 78 pushdef([gl_unknown_warnings_are_errors], gl_build_unknown_warnings_are_errors)dnl 79 80 st_SAVE_VAR([ac_c_decl_warn_flag]) 81 st_SAVE_VAR([ac_c_preproc_warn_flag]) 82 st_SAVE_VAR([ac_c_werror_flag]) 83 st_SAVE_VAR([ac_compile]) 84 st_SAVE_VAR([ac_compiler_gnu]) 85 st_SAVE_VAR([ac_cpp]) 86 st_SAVE_VAR([ac_cv_c_compiler_gnu]) 87 st_SAVE_VAR([ac_cv_c_decl_report]) 88 st_SAVE_VAR([ac_link]) 89 st_SAVE_VAR([ac_tool_prefix]) 90 st_SAVE_VAR([cross_compiling]) 91 cross_compiling=no 92 93 AC_MSG_NOTICE([looking for a C compiler that generates native executables]) 94 AC_PROG_CC 95 AC_PROG_CPP 96 AC_EXEEXT 97 98 st_WARN_CFLAGS 99 100 st_RESTORE_VAR([cross_compiling]) 101 st_RESTORE_VAR([ac_tool_prefix]) 102 st_RESTORE_VAR([ac_link]) 103 st_RESTORE_VAR([ac_cv_c_decl_report]) 104 st_RESTORE_VAR([ac_cv_c_compiler_gnu]) 105 st_RESTORE_VAR([ac_cpp]) 106 st_RESTORE_VAR([ac_compiler_gnu]) 107 st_RESTORE_VAR([ac_compile]) 108 st_RESTORE_VAR([ac_c_werror_flag]) 109 st_RESTORE_VAR([ac_c_preproc_warn_flag]) 110 st_RESTORE_VAR([ac_c_decl_warn_flag]) 111 112 dnl Restore the old definitions 113 dnl 114 popdef([gl_unknown_warnings_are_errors])dnl 115 popdef([am_cv_CC_dependencies_compiler_type])dnl 116 popdef([am_cv_prog_cc_c_o])dnl 117 popdef([ac_cv_host_os])dnl 118 popdef([ac_cv_host_vendor])dnl 119 popdef([ac_cv_host_cpu])dnl 120 popdef([ac_cv_host_alias])dnl 121 popdef([ac_cv_host])dnl 122 popdef([host_os])dnl 123 popdef([host_vendor])dnl 124 popdef([host_cpu])dnl 125 popdef([host_alias])dnl 126 popdef([host])dnl 127 popdef([WARN_CFLAGS])dnl 128 popdef([LDFLAGS])dnl 129 popdef([CPPFLAGS])dnl 130 popdef([CFLAGS])dnl 131 popdef([CPP])dnl 132 popdef([CC])dnl 133 popdef([ac_objext])dnl 134 popdef([ac_exeext])dnl 135 popdef([ac_cv_objext])dnl 136 popdef([ac_cv_exeext])dnl 137 popdef([ac_cv_prog_cc_c89])dnl 138 popdef([ac_cv_prog_cc_c99])dnl 139 popdef([ac_cv_prog_cc_c11])dnl 140 popdef([ac_cv_prog_cc_stdc])dnl 141 popdef([ac_cv_prog_cc_g])dnl 142 popdef([ac_cv_prog_cc_cross])dnl 143 popdef([ac_cv_prog_cc_works])dnl 144 popdef([ac_cv_prog_gcc])dnl 145 popdef([ac_cv_prog_CPP])dnl 146 147 dnl Finally, set Makefile variables 148 dnl 149 BUILD_EXEEXT=$ac_build_exeext 150 BUILD_OBJEXT=$ac_build_objext 151 AC_SUBST(BUILD_EXEEXT)dnl 152 AC_SUBST(BUILD_OBJEXT)dnl 153 AC_SUBST([CFLAGS_FOR_BUILD])dnl 154 AC_SUBST([CPPFLAGS_FOR_BUILD])dnl 155 AC_SUBST([LDFLAGS_FOR_BUILD])dnl 156 AC_SUBST([WARN_CFLAGS_FOR_BUILD])dnl 157 ]) 158
