gcc/config.host

   1 # GCC host-specific configuration file.
   2 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2006, 2007, 2008, 2009
   3 # Free Software Foundation, Inc.
   4
   5 #This file is part of GCC.
   6
   7 #GCC is free software; you can redistribute it and/or modify it under
   8 #the terms of the GNU General Public License as published by the Free
   9 #Software Foundation; either version 3, or (at your option) any later
  10 #version.
  11
  12 #GCC is distributed in the hope that it will be useful, but WITHOUT
  13 #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 #FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 #for more details.
  16
  17 #You should have received a copy of the GNU General Public License
  18 #along with GCC; see the file COPYING3.  If not see
  19 #<http://www.gnu.org/licenses/>.
  20
  21 # This is the GCC host-specific configuration file
  22 # where a configuration type is mapped to different system-specific
  23 # definitions and files.  This is invoked by the autoconf-generated
  24 # configure script.  Putting it in a separate shell file lets us skip
  25 # running autoconf when modifying host-specific information.
  26
  27 # This file switches on the shell variable ${host}.  As much of this as
  28 # is reasonable should be replaced with autoconf tests in the future.
  29
  30 # This file sets the following shell variables for use by the
  31 # autoconf-generated configure script:
  32 #
  33 #  host_xm_file         List of files to include when compiling for the
  34 #                       host machine.
  35 #
  36 #  host_xm_defines      List of macros to define when compiling for the
  37 #                       host machine.
  38 #
  39 #  host_xmake_file      List of host-specific makefile-fragments.
  40 #
  41 #  host_exeext          Set to the suffix, if the host machine requires
  42 #                       executables to have a file name suffix.
  43 #
  44 #  host_extra_objs      List of extra host-dependent objects that should
  45 #                       be linked into the compiler proper.
  46 #
  47 #  host_extra_gcc_objs  List of extra host-dependent objects that should
  48 #                       be linked into the gcc driver.
  49 #
  50 #  out_host_hook_obj    An object file that provides the host hooks.
  51 #
  52 #  host_can_use_collect2 Set to yes normally; to no if the host cannot
  53 #                       link or otherwise use collect2
  54 #  use_long_long_for_widest_fast_int Set this to 'yes' if 'long long'
  55 #                       (or '__int64') is wider than 'long' but still
  56 #                       efficeiently supported by the host hardware.
  57 #                       Only affects compile speed.  Default is 'no'.
  58
  59 # When setting any of these variables, check to see if a corresponding
  60 # variable is present in config.build; if so, you will likely want to
  61 # set it in both places.
  62
  63 # Default settings.
  64 host_xm_file=
  65 host_xm_defines=
  66 host_xmake_file=
  67 host_exeext=
  68 host_extra_objs=
  69 host_extra_gcc_objs=
  70 out_host_hook_obj=host-default.o
  71 host_can_use_collect2=yes
  72 use_long_long_for_widest_fast_int=no
  73
  74 # Unsupported hosts list.  Generally, only include hosts known to fail here,
  75 # since we allow hosts not listed to be supported generically.
  76 case ${host} in
  77    i[34567]86-sequent-sysv \
  78  | i[34567]86-sequent-sysv[123]* \
  79  | i[34567]86-go32-* \
  80  | i[34567]86-*-go32* \
  81  | vax-*-vms*)
  82     echo "*** Configuration for host ${host} not supported" 1>&2
  83     exit 1
  84     ;;
  85 esac
  86
  87 # Common parts for widely ported systems.
  88 case ${host} in
  89   *-darwin*)
  90     # Generic darwin host support.
  91     out_host_hook_obj=host-darwin.o
  92     host_xmake_file="${host_xmake_file} x-darwin"
  93     ;;
  94 esac
  95
  96 case ${host} in
  97   alpha*-*-linux*)
  98     case ${target} in
  99       alpha*-*-linux*)
 100         host_extra_gcc_objs="driver-alpha.o"
 101         host_xmake_file="${host_xmake_file} alpha/x-alpha"
 102         ;;
 103     esac
 104     ;;
 105   i[34567]86-*-* \
 106   | x86_64-*-* )
 107     case ${target} in
 108       i[34567]86-*-* \
 109       | x86_64-*-* )
 110         host_extra_gcc_objs="driver-i386.o"
 111         host_xmake_file="${host_xmake_file} i386/x-i386"
 112         ;;
 113     esac
 114     ;;
 115   mips*-*-linux*)
 116     case ${target} in
 117       mips*-*-linux*)
 118         host_extra_gcc_objs="driver-native.o"
 119         host_xmake_file="${host_xmake_file} mips/x-native"
 120       ;;
 121     esac
 122     ;;
 123   rs6000-*-* \
 124   | powerpc*-*-* )
 125     case ${target} in
 126       rs6000-*-* \
 127       | powerpc*-*-* )
 128         host_extra_gcc_objs="driver-rs6000.o"
 129         host_xmake_file="${host_xmake_file} rs6000/x-rs6000"
 130         ;;
 131     esac
 132     case ${host} in
 133       *-*-linux* )
 134         if test "${GCC}:${ac_cv_sizeof_long}" = yes:4; then
 135           # On powerpc*-*-linux* use -Wl,--relax to link cc1,
 136           # if ld is new enough, otherwise force -O1 in CFLAGS.
 137           host_ppc_relax_xmake_file=
 138           host_ld_ver=`${CC} -Wl,--version 2>/dev/null | sed 1q`
 139           if echo "$host_ld_ver" | grep GNU > /dev/null; then
 140             host_ld_date=`echo $host_ld_ver \
 141                           | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
 142             if test 0"$host_ld_date" -gt 20080806; then
 143               host_ppc_relax_xmake_file=rs6000/x-linux-relax
 144             fi
 145           fi
 146           if test -z "${host_ppc_relax_xmake_file}"; then
 147             host_ppc_relax_xmake_file=x-cflags-O1
 148           fi
 149           host_xmake_file="${host_xmake_file} ${host_ppc_relax_xmake_file}"
 150         fi
 151         ;;
 152     esac
 153     ;;
 154 esac
 155
 156 # Machine-specific settings.
 157 case ${host} in
 158   alpha64-dec-*vms*)
 159     host_xm_file="vms/xm-vms.h vms/xm-vms64.h"
 160     host_xmake_file=vms/x-vms
 161     host_exeext=.exe
 162     host_can_use_collect2=no
 163     prefix=/gnu
 164     local_prefix=/gnu/local
 165     ;;
 166   alpha*-dec-*vms*)
 167     host_xm_file="vms/xm-vms.h"
 168     host_xmake_file=vms/x-vms
 169     host_exeext=.exe
 170     host_can_use_collect2=no
 171     prefix=/gnu
 172     local_prefix=/gnu/local
 173     ;;
 174   hppa1.0-*-hpux10* | hppa1.1-*-hpux10* | hppa2*-*-hpux10*)
 175     out_host_hook_obj=host-hpux.o
 176     host_xmake_file="${host_xmake_file} x-hpux"
 177     ;;
 178   hppa1.0-*-hpux11* | hppa1.1-*-hpux11* | hppa2*-*-hpux11* | \
 179   hppa*64*-*-hpux11*)
 180     out_host_hook_obj=host-hpux.o
 181     host_xmake_file="${host_xmake_file} x-hpux"
 182     ;;
 183   hppa*-*-linux*)
 184     out_host_hook_obj=host-hpux.o
 185     host_xmake_file="${host_xmake_file} x-hpux"
 186     ;;
 187   i370-*-opened* | i370-*-mvs* ) # IBM 360/370/390 Architecture
 188     host_xm_defines='FATAL_EXIT_CODE=12'
 189     ;;
 190   i[34567]86-*-solaris2*)
 191     out_host_hook_obj=host-solaris.o
 192     host_xmake_file="${host_xmake_file} x-solaris"
 193     ;;
 194   i[34567]86-pc-msdosdjgpp*)
 195     host_xm_file=i386/xm-djgpp.h
 196     host_exeext=.exe
 197     # Shorten $target_noncanonical for 8.3 filename conventions.
 198     case ${target} in
 199       *pc-msdosdjgpp*)
 200         target_noncanonical=djgpp
 201         ;;
 202     esac
 203     ;;
 204   i[34567]86-*-pe | i[34567]86-*-cygwin*)
 205     host_xm_file=i386/xm-cygwin.h
 206     out_host_hook_obj=host-cygwin.o
 207     host_xmake_file="${host_xmake_file} i386/x-cygwin"
 208     host_exeext=.exe
 209     ;;
 210   i[34567]86-*-mingw32* | x86_64-*-mingw*)
 211     host_xm_file=i386/xm-mingw32.h
 212     host_xmake_file="${host_xmake_file} i386/x-mingw32"
 213     host_exeext=.exe
 214     out_host_hook_obj=host-mingw32.o
 215     ;;
 216   i[34567]86-*-uwin*)
 217     echo "*** UWIN may not be used as a host platform because"
 218     echo "*** linking with posix.dll is not allowed by the GNU GPL."
 219     exit 1
 220     ;;
 221   i[34567]86-*-darwin* | x86_64-*-darwin*)
 222     out_host_hook_obj="${out_host_hook_obj} host-i386-darwin.o"
 223     host_xmake_file="${host_xmake_file} i386/x-darwin"
 224     ;;
 225   ia64-hp-*vms*)
 226     host_xm_file="vms/xm-vms.h vms/xm-vms64.h"
 227     host_xmake_file=vms/x-vms
 228     host_exeext=.exe
 229     host_can_use_collect2=no
 230     prefix=/gnu
 231     local_prefix=/gnu/local
 232     ;;
 233   powerpc-*-beos*)
 234     host_can_use_collect2=no
 235     ;;
 236   powerpc-*-darwin*)
 237     out_host_hook_obj="${out_host_hook_obj} host-ppc-darwin.o"
 238     host_xmake_file="${host_xmake_file} rs6000/x-darwin"
 239     ;;
 240   powerpc64-*-darwin*)
 241     out_host_hook_obj="${out_host_hook_obj} host-ppc64-darwin.o"
 242     host_xmake_file="${host_xmake_file} rs6000/x-darwin64"
 243     ;;
 244   rs6000-ibm-aix* | powerpc-ibm-aix*)
 245     host_xmake_file="${host_xmake_file} rs6000/x-aix"
 246     ;;
 247   *-*-solaris2*)
 248     out_host_hook_obj=host-solaris.o
 249     host_xmake_file="${host_xmake_file} x-solaris"
 250     ;;
 251   *-*-linux*)
 252     out_host_hook_obj=host-linux.o
 253     host_xmake_file="${host_xmake_file} x-linux"
 254     ;;
 255   ia64-*-hpux*)
 256     use_long_long_for_widest_fast_int=yes
 257     out_host_hook_obj=host-hpux.o
 258     host_xmake_file="${host_xmake_file} x-hpux"
 259     ;;
 260 esac