gcc/config.host

   1 # GCC host-specific configuration file.
   2 # Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2006, 2007, 2008, 2009,
   3 # 2010 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 #
  55 #  use_long_long_for_widest_fast_int Set this to 'yes' if 'long long'
  56 #                       (or '__int64') is wider than 'long' but still
  57 #                       efficeiently supported by the host hardware.
  58 #                       Only affects compile speed.  Default is 'no'.
  59 #
  60 #  host_lto_plugin_soname Set this to the name to which the LTO linker
  61 #                       plugin gets compiled on this host, if it is
  62 #                       different from the default "liblto_plugin.so".
  63
  64 # When setting any of these variables, check to see if a corresponding
  65 # variable is present in config.build; if so, you will likely want to
  66 # set it in both places.
  67
  68 # Default settings.
  69 host_xm_file=
  70 host_xm_defines=
  71 host_xmake_file=
  72 host_exeext=
  73 host_extra_objs=
  74 host_extra_gcc_objs=
  75 out_host_hook_obj=host-default.o
  76 host_can_use_collect2=yes
  77 use_long_long_for_widest_fast_int=no
  78 host_lto_plugin_soname=liblto_plugin.so
  79
  80 # Unsupported hosts list.  Generally, only include hosts known to fail here,
  81 # since we allow hosts not listed to be supported generically.
  82 case ${host} in
  83    i[34567]86-sequent-sysv \
  84  | i[34567]86-sequent-sysv[123]* \
  85  | i[34567]86-go32-* \
  86  | i[34567]86-*-go32* \
  87  | vax-*-vms*)
  88     echo "*** Configuration for host ${host} not supported" 1>&2
  89     exit 1
  90     ;;
  91 esac
  92
  93 # Common parts for widely ported systems.
  94 case ${host} in
  95   *-darwin*)
  96     # Generic darwin host support.
  97     out_host_hook_obj=host-darwin.o
  98     host_xmake_file="${host_xmake_file} x-darwin"
  99     ;;
 100 esac
 101
 102 case ${host} in
 103   alpha*-*-linux*)
 104     case ${target} in
 105       alpha*-*-linux*)
 106         host_extra_gcc_objs="driver-alpha.o"
 107         host_xmake_file="${host_xmake_file} alpha/x-alpha"
 108         ;;
 109     esac
 110     ;;
 111   i[34567]86-*-* \
 112   | x86_64-*-* )
 113     case ${target} in
 114       i[34567]86-*-* \
 115       | x86_64-*-* )
 116         host_extra_gcc_objs="driver-i386.o"
 117         host_xmake_file="${host_xmake_file} i386/x-i386"
 118         ;;
 119     esac
 120     ;;
 121   mips*-*-linux*)
 122     case ${target} in
 123       mips*-*-linux*)
 124         host_extra_gcc_objs="driver-native.o"
 125         host_xmake_file="${host_xmake_file} mips/x-native"
 126       ;;
 127     esac
 128     ;;
 129   rs6000-*-* \
 130   | powerpc*-*-* )
 131     case ${target} in
 132       rs6000-*-* \
 133       | powerpc*-*-* )
 134         host_extra_gcc_objs="driver-rs6000.o"
 135         host_xmake_file="${host_xmake_file} rs6000/x-rs6000"
 136         ;;
 137     esac
 138     case ${host} in
 139       *-*-linux* | *-*-freebsd*)
 140         if test "${GCC}:${ac_cv_sizeof_long}" = yes:4; then
 141           # On powerpc*-*-linux* use -Wl,--relax to link cc1,
 142           # if ld is new enough, otherwise force -O1 in CFLAGS.
 143           host_ppc_relax_xmake_file=
 144           host_ld_ver=`${CC} -Wl,--version 2>/dev/null | sed 1q`
 145           if echo "$host_ld_ver" | grep GNU > /dev/null; then
 146             host_ld_date=`echo $host_ld_ver \
 147                           | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
 148             if test 0"$host_ld_date" -gt 20080806; then
 149               host_ppc_relax_xmake_file=rs6000/x-linux-relax
 150             fi
 151           fi
 152           if test -z "${host_ppc_relax_xmake_file}"; then
 153             host_ppc_relax_xmake_file=x-cflags-O1
 154           fi
 155           host_xmake_file="${host_xmake_file} ${host_ppc_relax_xmake_file}"
 156         fi
 157         ;;
 158     esac
 159     ;;
 160 esac
 161
 162 # Machine-specific settings.
 163 case ${host} in
 164   alpha64-dec-*vms*)
 165     host_xm_file="vms/xm-vms.h vms/xm-vms64.h"
 166     host_xmake_file=vms/x-vms
 167     host_exeext=.exe
 168     host_can_use_collect2=no
 169     prefix=/gnu
 170     local_prefix=/gnu/local
 171     ;;
 172   alpha*-dec-*vms*)
 173     host_xm_file="vms/xm-vms.h"
 174     host_xmake_file=vms/x-vms
 175     host_exeext=.exe
 176     host_can_use_collect2=no
 177     prefix=/gnu
 178     local_prefix=/gnu/local
 179     ;;
 180   hppa1.0-*-hpux10* | hppa1.1-*-hpux10* | hppa2*-*-hpux10*)
 181     out_host_hook_obj=host-hpux.o
 182     host_xmake_file="${host_xmake_file} x-hpux"
 183     ;;
 184   hppa1.0-*-hpux11* | hppa1.1-*-hpux11* | hppa2*-*-hpux11* | \
 185   hppa*64*-*-hpux11*)
 186     out_host_hook_obj=host-hpux.o
 187     host_xmake_file="${host_xmake_file} x-hpux"
 188     ;;
 189   hppa*-*-linux*)
 190     out_host_hook_obj=host-hpux.o
 191     host_xmake_file="${host_xmake_file} x-hpux"
 192     ;;
 193   i370-*-opened* | i370-*-mvs* ) # IBM 360/370/390 Architecture
 194     host_xm_defines='FATAL_EXIT_CODE=12'
 195     ;;
 196   i[34567]86-*-solaris2*)
 197     out_host_hook_obj=host-solaris.o
 198     host_xmake_file="${host_xmake_file} x-solaris"
 199     ;;
 200   i[34567]86-pc-msdosdjgpp*)
 201     host_xm_file=i386/xm-djgpp.h
 202     host_exeext=.exe
 203     # Shorten $target_noncanonical for 8.3 filename conventions.
 204     case ${target} in
 205       *pc-msdosdjgpp*)
 206         target_noncanonical=djgpp
 207         ;;
 208     esac
 209     ;;
 210   i[34567]86-*-pe | i[34567]86-*-cygwin*)
 211     host_xm_file=i386/xm-cygwin.h
 212     out_host_hook_obj=host-cygwin.o
 213     host_xmake_file="${host_xmake_file} i386/x-cygwin"
 214     host_exeext=.exe
 215     host_lto_plugin_soname=cyglto_plugin-0.dll
 216     ;;
 217   i[34567]86-*-mingw32*)
 218     host_xm_file=i386/xm-mingw32.h
 219     host_xmake_file="${host_xmake_file} i386/x-mingw32"
 220     host_exeext=.exe
 221     out_host_hook_obj=host-mingw32.o
 222     host_lto_plugin_soname=liblto_plugin-0.dll
 223     ;;
 224   x86_64-*-mingw*)
 225     use_long_long_for_widest_fast_int=yes
 226     host_xm_file=i386/xm-mingw32.h
 227     host_xmake_file="${host_xmake_file} i386/x-mingw32"
 228     host_exeext=.exe
 229     out_host_hook_obj=host-mingw32.o
 230     host_lto_plugin_soname=liblto_plugin-0.dll
 231     ;;
 232   i[34567]86-*-uwin*)
 233     echo "*** UWIN may not be used as a host platform because"
 234     echo "*** linking with posix.dll is not allowed by the GNU GPL."
 235     exit 1
 236     ;;
 237   i[34567]86-*-darwin* | x86_64-*-darwin*)
 238     out_host_hook_obj="${out_host_hook_obj} host-i386-darwin.o"
 239     host_xmake_file="${host_xmake_file} i386/x-darwin"
 240     ;;
 241   ia64-hp-*vms*)
 242     host_xm_file="vms/xm-vms.h vms/xm-vms64.h"
 243     host_xmake_file=vms/x-vms
 244     host_exeext=.exe
 245     host_can_use_collect2=no
 246     prefix=/gnu
 247     local_prefix=/gnu/local
 248     ;;
 249   powerpc-*-beos*)
 250     host_can_use_collect2=no
 251     ;;
 252   powerpc-*-darwin*)
 253     out_host_hook_obj="${out_host_hook_obj} host-ppc-darwin.o"
 254     host_xmake_file="${host_xmake_file} rs6000/x-darwin"
 255     ;;
 256   powerpc64-*-darwin*)
 257     out_host_hook_obj="${out_host_hook_obj} host-ppc64-darwin.o"
 258     host_xmake_file="${host_xmake_file} rs6000/x-darwin64"
 259     ;;
 260   rs6000-ibm-aix* | powerpc-ibm-aix*)
 261     host_xmake_file="${host_xmake_file} rs6000/x-aix"
 262     ;;
 263   *-*-solaris2*)
 264     out_host_hook_obj=host-solaris.o
 265     host_xmake_file="${host_xmake_file} x-solaris"
 266     ;;
 267   *-*-linux*)
 268     out_host_hook_obj=host-linux.o
 269     host_xmake_file="${host_xmake_file} x-linux"
 270     ;;
 271   ia64-*-hpux*)
 272     use_long_long_for_widest_fast_int=yes
 273     out_host_hook_obj=host-hpux.o
 274     host_xmake_file="${host_xmake_file} x-hpux"
 275     ;;
 276 esac