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[pf3gnuchains/gcc-fork.git] / 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 ${target} in
199       *pc-msdosdjgpp*)
200         target_noncanonical=djgpp
201         ;;
202     esac
203     ;;
204   i[34567]86-*-pe | i[34567]86-*-cygwin*)
205     use_long_long_for_widest_fast_int=yes
206     host_xm_file=i386/xm-cygwin.h
207     out_host_hook_obj=host-cygwin.o
208     host_xmake_file="${host_xmake_file} i386/x-cygwin"
209     host_exeext=.exe
210     ;;
211   i[34567]86-*-mingw32* | x86_64-*-mingw*)
212     use_long_long_for_widest_fast_int=yes
213     host_xm_file=i386/xm-mingw32.h
214     host_xmake_file="${host_xmake_file} i386/x-mingw32"
215     host_exeext=.exe
216     out_host_hook_obj=host-mingw32.o
217     ;;
218   i[34567]86-*-uwin*)
219     echo "*** UWIN may not be used as a host platform because"
220     echo "*** linking with posix.dll is not allowed by the GNU GPL."
221     exit 1
222     ;;
223   i[34567]86-*-darwin* | x86_64-*-darwin*)
224     out_host_hook_obj="${out_host_hook_obj} host-i386-darwin.o"
225     host_xmake_file="${host_xmake_file} i386/x-darwin"
226     ;;
227   ia64-hp-*vms*)
228     host_xm_file="vms/xm-vms.h vms/xm-vms64.h"
229     host_xmake_file=vms/x-vms
230     host_exeext=.exe
231     host_can_use_collect2=no
232     prefix=/gnu
233     local_prefix=/gnu/local
234     ;;
235   powerpc-*-beos*)
236     host_can_use_collect2=no
237     ;;
238   powerpc-*-darwin*)
239     out_host_hook_obj="${out_host_hook_obj} host-ppc-darwin.o"
240     host_xmake_file="${host_xmake_file} rs6000/x-darwin"
241     ;;
242   powerpc64-*-darwin*)
243     out_host_hook_obj="${out_host_hook_obj} host-ppc64-darwin.o"
244     host_xmake_file="${host_xmake_file} rs6000/x-darwin64"
245     ;;
246   rs6000-ibm-aix* | powerpc-ibm-aix*)
247     host_xmake_file="${host_xmake_file} rs6000/x-aix"
248     ;;
249   *-*-solaris2*)
250     out_host_hook_obj=host-solaris.o
251     host_xmake_file="${host_xmake_file} x-solaris"
252     ;;
253   *-*-linux*)
254     out_host_hook_obj=host-linux.o
255     host_xmake_file="${host_xmake_file} x-linux"
256     ;;
257   ia64-*-hpux*)
258     use_long_long_for_widest_fast_int=yes
259     out_host_hook_obj=host-hpux.o
260     host_xmake_file="${host_xmake_file} x-hpux"
261     ;;
262 esac