# =========================================================================== # http://www.gnu.org/software/autoconf-archive/ax_prog_cc_for_build.html # =========================================================================== # # SYNOPSIS # # AX_PROG_CC_FOR_BUILD # # DESCRIPTION # # This macro searches for a C compiler that generates native executables, # that is a C compiler that surely is not a cross-compiler. This can be # useful if you have to generate source code at compile-time like for # example GCC does. # # The macro sets the CC_FOR_BUILD and CPP_FOR_BUILD macros to anything # needed to compile or link (CC_FOR_BUILD) and preprocess (CPP_FOR_BUILD). # The value of these variables can be overridden by the user by specifying # a compiler with an environment variable (like you do for standard CC). # # It also sets BUILD_EXEEXT and BUILD_OBJEXT to the executable and object # file extensions for the build platform, and GCC_FOR_BUILD to `yes' if # the compiler we found is GCC. All these variables but GCC_FOR_BUILD are # substituted in the Makefile. # # LICENSE # # Copyright (c) 2008 Paolo Bonzini # Copyright (c) 2008-2017 The strace developers. # # Copying and distribution of this file, with or without modification, are # permitted in any medium without royalty provided the copyright notice # and this notice are preserved. This file is offered as-is, without any # warranty. #serial 8 #modified for strace project AU_ALIAS([AC_PROG_CC_FOR_BUILD], [AX_PROG_CC_FOR_BUILD]) AC_DEFUN([AX_PROG_CC_FOR_BUILD], [dnl AC_REQUIRE([AC_PROG_CC])dnl AC_REQUIRE([AC_PROG_CPP])dnl AC_REQUIRE([AC_EXEEXT])dnl AC_REQUIRE([AC_CANONICAL_HOST])dnl dnl Use the standard macros, but make them use other variable names dnl pushdef([ac_cv_prog_CPP], ac_cv_build_prog_CPP)dnl pushdef([ac_cv_prog_gcc], ac_cv_build_prog_gcc)dnl pushdef([ac_cv_prog_cc_works], ac_cv_build_prog_cc_works)dnl pushdef([ac_cv_prog_cc_cross], ac_cv_build_prog_cc_cross)dnl pushdef([ac_cv_prog_cc_g], ac_cv_build_prog_cc_g)dnl pushdef([ac_cv_prog_cc_stdc], ac_cv_build_prog_cc_stdc)dnl pushdef([ac_cv_prog_cc_c11], ac_cv_build_prog_cc_c11)dnl pushdef([ac_cv_prog_cc_c99], ac_cv_build_prog_cc_c99)dnl pushdef([ac_cv_prog_cc_c89], ac_cv_build_prog_cc_c89)dnl pushdef([ac_cv_exeext], ac_cv_build_exeext)dnl pushdef([ac_cv_objext], ac_cv_build_objext)dnl pushdef([ac_exeext], ac_build_exeext)dnl pushdef([ac_objext], ac_build_objext)dnl pushdef([CC], CC_FOR_BUILD)dnl pushdef([CPP], CPP_FOR_BUILD)dnl pushdef([CFLAGS], CFLAGS_FOR_BUILD)dnl pushdef([CPPFLAGS], CPPFLAGS_FOR_BUILD)dnl pushdef([LDFLAGS], LDFLAGS_FOR_BUILD)dnl pushdef([WARN_CFLAGS], WARN_CFLAGS_FOR_BUILD)dnl pushdef([host], build)dnl pushdef([host_alias], build_alias)dnl pushdef([host_cpu], build_cpu)dnl pushdef([host_vendor], build_vendor)dnl pushdef([host_os], build_os)dnl pushdef([ac_cv_host], ac_cv_build)dnl pushdef([ac_cv_host_alias], ac_cv_build_alias)dnl pushdef([ac_cv_host_cpu], ac_cv_build_cpu)dnl pushdef([ac_cv_host_vendor], ac_cv_build_vendor)dnl pushdef([ac_cv_host_os], ac_cv_build_os)dnl pushdef([am_cv_prog_cc_c_o], am_cv_build_prog_cc_c_o)dnl pushdef([am_cv_CC_dependencies_compiler_type], am_cv_build_CC_dependencies_compiler_type)dnl pushdef([gl_unknown_warnings_are_errors], gl_build_unknown_warnings_are_errors)dnl st_SAVE_VAR([ac_c_decl_warn_flag]) st_SAVE_VAR([ac_c_preproc_warn_flag]) st_SAVE_VAR([ac_c_werror_flag]) st_SAVE_VAR([ac_compile]) st_SAVE_VAR([ac_compiler_gnu]) st_SAVE_VAR([ac_cpp]) st_SAVE_VAR([ac_cv_c_compiler_gnu]) st_SAVE_VAR([ac_cv_c_decl_report]) st_SAVE_VAR([ac_link]) st_SAVE_VAR([ac_tool_prefix]) st_SAVE_VAR([cross_compiling]) cross_compiling=no AC_MSG_NOTICE([looking for a C compiler that generates native executables]) AC_PROG_CC AC_PROG_CPP AC_EXEEXT st_WARN_CFLAGS st_RESTORE_VAR([cross_compiling]) st_RESTORE_VAR([ac_tool_prefix]) st_RESTORE_VAR([ac_link]) st_RESTORE_VAR([ac_cv_c_decl_report]) st_RESTORE_VAR([ac_cv_c_compiler_gnu]) st_RESTORE_VAR([ac_cpp]) st_RESTORE_VAR([ac_compiler_gnu]) st_RESTORE_VAR([ac_compile]) st_RESTORE_VAR([ac_c_werror_flag]) st_RESTORE_VAR([ac_c_preproc_warn_flag]) st_RESTORE_VAR([ac_c_decl_warn_flag]) dnl Restore the old definitions dnl popdef([gl_unknown_warnings_are_errors])dnl popdef([am_cv_CC_dependencies_compiler_type])dnl popdef([am_cv_prog_cc_c_o])dnl popdef([ac_cv_host_os])dnl popdef([ac_cv_host_vendor])dnl popdef([ac_cv_host_cpu])dnl popdef([ac_cv_host_alias])dnl popdef([ac_cv_host])dnl popdef([host_os])dnl popdef([host_vendor])dnl popdef([host_cpu])dnl popdef([host_alias])dnl popdef([host])dnl popdef([WARN_CFLAGS])dnl popdef([LDFLAGS])dnl popdef([CPPFLAGS])dnl popdef([CFLAGS])dnl popdef([CPP])dnl popdef([CC])dnl popdef([ac_objext])dnl popdef([ac_exeext])dnl popdef([ac_cv_objext])dnl popdef([ac_cv_exeext])dnl popdef([ac_cv_prog_cc_c89])dnl popdef([ac_cv_prog_cc_c99])dnl popdef([ac_cv_prog_cc_c11])dnl popdef([ac_cv_prog_cc_stdc])dnl popdef([ac_cv_prog_cc_g])dnl popdef([ac_cv_prog_cc_cross])dnl popdef([ac_cv_prog_cc_works])dnl popdef([ac_cv_prog_gcc])dnl popdef([ac_cv_prog_CPP])dnl dnl Finally, set Makefile variables dnl BUILD_EXEEXT=$ac_build_exeext BUILD_OBJEXT=$ac_build_objext AC_SUBST(BUILD_EXEEXT)dnl AC_SUBST(BUILD_OBJEXT)dnl AC_SUBST([CFLAGS_FOR_BUILD])dnl AC_SUBST([CPPFLAGS_FOR_BUILD])dnl AC_SUBST([LDFLAGS_FOR_BUILD])dnl AC_SUBST([WARN_CFLAGS_FOR_BUILD])dnl ])