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configure.in (target_libs): Added target-zlib.
[thirdparty/gcc.git] / configure.in
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6599da04
JM		 1#! /bin/bash
2##############################################################################
3
4## This file is a shell script fragment that supplies the information
5## necessary to tailor a template configure script into the configure
6## script appropriate for this directory. For more information, check
7## any existing configure script.
8
9## Be warned, there are two types of configure.in files. There are those
10## used by Autoconf, which are macros which are expanded into a configure
11## script by autoconf. The other sort, of which this is one, is executed
12## by Cygnus configure.
13
14## For more information on these two systems, check out the documentation
15## for 'Autoconf' (autoconf.texi) and 'Configure' (configure.texi).
16
c9ffaa63 17# Copyright (C) 1992, 93, 94, 95, 96, 97, 1998, 1999 Free Software Foundation, Inc.
6599da04
JM		 18#
19# This file is free software; you can redistribute it and/or modify it
20# under the terms of the GNU General Public License as published by
21# the Free Software Foundation; either version 2 of the License, or
22# (at your option) any later version.
23#
24# This program is distributed in the hope that it will be useful, but
25# WITHOUT ANY WARRANTY; without even the implied warranty of
26# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27# General Public License for more details.
28#
29# You should have received a copy of the GNU General Public License
30# along with this program; if not, write to the Free Software
31# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
32
33##############################################################################
34
35### To add a new directory to the tree, first choose whether it is a target
36### or a host dependent tool. Then put it into the appropriate list
37### (library or tools, host or target), doing a dependency sort. For
38### example, gdb requires that byacc (or bison) be built first, so it is in
39### the ${host_tools} list after byacc and bison.
40
41
42# these libraries are used by various programs built for the host environment
43#
5d4a5ee6 44host_libs="intl mmalloc libiberty opcodes bfd readline gash db tcl tk tclX itcl tix libgui"
6599da04
JM		 45
46if [ "${enable_gdbgui}" = "yes" ] ; then
47 host_libs="${host_libs} libgui"
48fi
49
50# these tools are built for the host environment
51# Note, the powerpc-eabi build depends on sim occurring before gdb in order to
52# know that we are building the simulator.
5d4a5ee6
JL		 53host_tools="texinfo byacc flex bison binutils ld gas gcc sim gdb make patch prms send-pr gprof gdbtest tgas etc expect dejagnu ash bash bzip2 m4 autoconf automake libtool ispell grep diff rcs cvssrc fileutils shellutils time textutils wdiff find emacs emacs19 uudecode hello tar gzip indent recode release sed utils guile perl apache inet gawk findutils snavigator libtool gettext"
54
6599da04
JM		 55
56# these libraries are built for the target environment, and are built after
57# the host libraries and the host tools (which may be a cross compiler)
58#
5d4a5ee6
JL		 59target_libs="target-libiberty \
60 target-libgloss \
61 target-newlib \
62 target-libio \
63 target-librx \
7c5fa4cb 64 target-libstdc++ \
5d4a5ee6
JL		 65 target-libg++ \
66 target-libf2c \
67 target-libchill \
68 target-libobjc"
6599da04
JM		 69
70# these tools are built using the target libs, and are intended to run only
71# in the target environment
72#
73# note: any program that *uses* libraries that are in the "target_libs"
74# list belongs in this list. those programs are also very likely
75# candidates for the "native_only" list which follows
76#
77target_tools="target-examples target-groff target-gperf"
78
79################################################################################
80
81## These two lists are of directories that are to be removed from the
82## ${configdirs} list for either cross-compilations or for native-
83## compilations. For example, it doesn't make that much sense to
84## cross-compile Emacs, nor is it terribly useful to compile target-libiberty in
85## a native environment.
86
87# directories to be built in the native environment only
88#
89# This must be a single line because of the way it is searched by grep in
90# the code below.
5d4a5ee6 91native_only="autoconf automake libtool cvssrc emacs emacs19 fileutils find gawk gettext grep gzip hello indent ispell m4 rcs recode sed shellutils tar textutils gash uudecode wdiff gprof target-groff guile perl apache inet time ash bash bzip2 prms snavigator gnuserv target-gperf"
6599da04
JM		 92
93# directories to be built in a cross environment only
94#
5d4a5ee6 95cross_only="target-libgloss target-newlib target-cygmon target-opcodes target-libstub"
6599da04
JM		 96
97## All tools belong in one of the four categories, and are assigned above
98## We assign ${configdirs} this way to remove all embedded newlines. This
99## is important because configure will choke if they ever get through.
100## ${configdirs} is directories we build using the host tools.
101## ${target_configdirs} is directories we build using the target tools.
102#
103configdirs=`echo ${host_libs} ${host_tools}`
104target_configdirs=`echo ${target_libs} ${target_tools}`
105
106################################################################################
107
108srctrigger=move-if-change
109srcname="gnu development package"
110
111# This gets set non-empty for some net releases of packages.
112appdirs=""
113
114# per-host:
115
116# Work in distributions that contain no compiler tools, like Autoconf.
117if [ -d ${srcdir}/config ]; then
118case "${host}" in
e2de3a46
L		 119 m68k-hp-hpux*)
120 host_makefile_frag="${host_makefile_frag} config/mh-hp300"
121 ;;
122 m68k-apollo-sysv*)
123 host_makefile_frag="${host_makefile_frag} config/mh-apollo68"
124 ;;
125 m68k-apollo-bsd*)
126 host_makefile_frag="${host_makefile_frag} config/mh-a68bsd"
127 ;;
128 m88k-dg-dgux*)
129 host_makefile_frag="${host_makefile_frag} config/mh-dgux"
130 ;;
131 m88k-harris-cxux*)
132 host_makefile_frag="${host_makefile_frag} config/mh-cxux"
133 ;;
134 m88k-motorola-sysv*)
135 host_makefile_frag="${host_makefile_frag} config/mh-delta88"
136 ;;
137 mips*-dec-ultrix*)
138 host_makefile_frag="${host_makefile_frag} config/mh-decstation"
139 ;;
140 mips*-nec-sysv4*)
141 host_makefile_frag="${host_makefile_frag} config/mh-necv4"
142 ;;
143 mips*-sgi-irix6*)
144 host_makefile_frag="${host_makefile_frag} config/mh-irix6"
145 ;;
146 mips*-sgi-irix5*)
147 host_makefile_frag="${host_makefile_frag} config/mh-irix5"
148 ;;
149 mips*-sgi-irix4*)
150 host_makefile_frag="${host_makefile_frag} config/mh-irix4"
151 ;;
152 mips*-sgi-irix3*)
153 host_makefile_frag="${host_makefile_frag} config/mh-sysv"
154 ;;
155 mips*-*-sysv4*)
156 host_makefile_frag="${host_makefile_frag} config/mh-sysv4"
157 ;;
158 mips*-*-sysv*)
159 host_makefile_frag="${host_makefile_frag} config/mh-riscos"
160 ;;
5d4a5ee6
JL		 161 i[3456]86-*-sysv5*)
162 host_makefile_frag="${host_makefile_frag} config/mh-sysv5"
163 ;;
e2de3a46
L		 164 i[3456]86-*-dgux*)
165 host_makefile_frag="${host_makefile_frag} config/mh-dgux386"
166 ;;
167 i[3456]86-ncr-sysv4.3*)
168 host_makefile_frag="${host_makefile_frag} config/mh-ncrsvr43"
169 ;;
170 i[3456]86-ncr-sysv4*)
171 host_makefile_frag="${host_makefile_frag} config/mh-ncr3000"
172 ;;
173 i[3456]86-*-sco3.2v5*)
174 host_makefile_frag="${host_makefile_frag} config/mh-sysv"
175 ;;
176 i[3456]86-*-sco*)
177 host_makefile_frag="${host_makefile_frag} config/mh-sco"
178 ;;
73a6d2e7
RL		 179 i[3456]86-*-udk*)
180 host_makefile_frag="${host_makefile_frag} config/mh-sysv5"
181 ;;
e2de3a46
L		 182 i[3456]86-*-isc*)
183 host_makefile_frag="${host_makefile_frag} config/mh-sysv"
184 ;;
185 i[3456]86-*-solaris2*)
186 host_makefile_frag="${host_makefile_frag} config/mh-sysv4"
187 ;;
188 i[3456]86-*-aix*)
189 host_makefile_frag="${host_makefile_frag} config/mh-aix386"
190 ;;
e2de3a46 191 i[3456]86-*-msdosdjgpp*)
8dc91cbe 192 host_makefile_frag="${host_makefile_frag} config/mh-djgpp"
e2de3a46
L		 193 ;;
194 *-cygwin32*)
82281fc2 195 host_makefile_frag="${host_makefile_frag} config/mh-cygwin"
e2de3a46 196 ;;
d39cd7a1
MK		 197 *-mingw32*)
198 host_makefile_frag="${host_makefile_frag} config/mh-mingw32"
199 ;;
c9ffaa63
MK		 200 *-interix*)
201 host_makefile_frag="${host_makefile_frag} config/mh-interix"
202 ;;
e2de3a46
L		 203 *-windows*)
204 host_makefile_frag="${host_makefile_frag} config/mh-windows"
205 ;;
206 vax-*-ultrix2*)
207 host_makefile_frag="${host_makefile_frag} config/mh-vaxult2"
208 ;;
209 *-*-solaris2*)
210 host_makefile_frag="${host_makefile_frag} config/mh-solaris"
211 ;;
212 m68k-sun-sunos*)
213 host_makefile_frag="${host_makefile_frag} config/mh-sun3"
214 ;;
215 *-hp-hpux[78]*)
216 host_makefile_frag="${host_makefile_frag} config/mh-hpux8"
217 ;;
218 *-hp-hpux*)
219 host_makefile_frag="${host_makefile_frag} config/mh-hpux"
220 ;;
221 *-*-hiux*)
222 host_makefile_frag="${host_makefile_frag} config/mh-hpux"
223 ;;
224 rs6000-*-lynxos*)
225 host_makefile_frag="${host_makefile_frag} config/mh-lynxrs6k"
226 ;;
227 *-*-lynxos*)
228 host_makefile_frag="${host_makefile_frag} config/mh-lynxos"
229 ;;
57fc6638
DE		 230 *-*-aix4.[3456789]* | *-*-aix[56789].*)
231 host_makefile_frag="${host_makefile_frag} config/mh-aix43"
232 ;;
e2de3a46
L		 233 *-*-sysv4*)
234 host_makefile_frag="${host_makefile_frag} config/mh-sysv4"
235 ;;
236 *-*-sysv*)
237 host_makefile_frag="${host_makefile_frag} config/mh-sysv"
238 ;;
6599da04
JM		 239esac
240fi
241
242# If we aren't going to be using gcc, see if we can extract a definition
243# of CC from the fragment.
5d4a5ee6 244if [ -z "${CC}" ] && [ "${build}" = "${host}" ]; then
6599da04
JM		 245 IFS="${IFS= }"; save_ifs="$IFS"; IFS="${IFS}:"
246 found=
247 for dir in $PATH; do
248 test -z "$dir" && dir=.
249 if test -f $dir/gcc; then
250 found=yes
251 break
252 fi
253 done
254 IFS="$save_ifs"
5d4a5ee6 255 if [ -z "${found}" ] && [ -n "${host_makefile_frag}" ] && [ -f "${srcdir}/${host_makefile_frag}" ]; then
6599da04
JM		 256 xx=`sed -n -e 's/^[ ]*CC[ ]*=[ ]*\(.*\)$/\1/p' < ${srcdir}/${host_makefile_frag}`
257 if [ -n "${xx}" ] ; then
258 CC=$xx
259 fi
260 fi
261fi
262
263# We default to --with-shared on platforms where -fpic is meaningless.
264# Well, we don't yet, but we will.
265if false && [ "${host}" = "${target}" ] && [ x${enable_shared} = x ]; then
266 case "${target}" in
b104e095
RH		 267 alpha*-dec-osf*) enable_shared=yes ;;
268 alpha*-*-linux*) enable_shared=yes ;;
6599da04
JM		 269 mips-sgi-irix5*) enable_shared=yes ;;
270 *) enable_shared=no ;;
271 esac
272fi
273
274case "${enable_shared}" in
275 yes) shared=yes ;;
276 no) shared=no ;;
277 "") shared=no ;;
278 *) shared=yes ;;
279esac
280
281if [ x${shared} = xyes ]; then
6599da04 282 case "${host}" in
4a6e3000
FS		 283 alpha*-*-linux*)
284 host_makefile_frag="${host_makefile_frag} config/mh-elfalphapic"
285 ;;
286 arm*-*-*)
287 host_makefile_frag="${host_makefile_frag} config/mh-armpic"
288 ;;
289 hppa*-*-*)
e2de3a46
L		 290 host_makefile_frag="${host_makefile_frag} config/mh-papic"
291 ;;
5d4a5ee6
JL		 292 i[3456]86-*-cygwin32*)
293 # We don't want -fPIC on cygwin32.
294 ;;
4a6e3000 295 i[3456]86-*-*)
e2de3a46
L		 296 host_makefile_frag="${host_makefile_frag} config/mh-x86pic"
297 ;;
4a6e3000 298 sparc64-*-*)
e2de3a46
L		 299 host_makefile_frag="${host_makefile_frag} config/mh-sparcpic"
300 ;;
4a6e3000
FS		 301 powerpc*-*-aix*)
302 # We don't want -fPIC on AIX.
e2de3a46 303 ;;
4a6e3000
FS		 304 powerpc*-*-*)
305 host_makefile_frag="${host_makefile_frag} config/mh-ppcpic"
e2de3a46 306 ;;
4a6e3000 307 *-*-*)
520ab477 308 if test -f ${srcdir}/config/mh-${host_cpu}pic; then
4bcdb76d
AO		 309 host_makefile_frag="${host_makefile_frag} config/mh-${host_cpu}pic"
310 fi
e2de3a46 311 ;;
6599da04 312 esac
e2de3a46
L		 313fi
314
315rm -f mh-frag
316if [ -n "${host_makefile_frag}" ] ; then
317 for f in ${host_makefile_frag}
318 do
319 cat ${srcdir}/$f >> mh-frag
320 done
321 host_makefile_frag=mh-frag
6599da04
JM		 322fi
323
324# per-target:
325
326case "${target}" in
e2de3a46
L		 327 v810*)
328 target_makefile_frag="${target_makefile_frag} config/mt-v810"
329 ;;
330 i[3456]86-*-netware*)
331 target_makefile_frag="${target_makefile_frag} config/mt-netware"
332 ;;
333 powerpc-*-netware*)
334 target_makefile_frag="${target_makefile_frag} config/mt-netware"
335 ;;
336 *-*-linux-gnu)
337 target_makefile_frag="${target_makefile_frag} config/mt-linux"
338 ;;
6599da04
JM		 339esac
340
3f4ea1de
MM		 341# If --enable-target-optspace always use -Os instead of -O2 to build
342# the target libraries, similarly if it is not specified, use -Os
343# on selected platforms.
3f4ea1de
MM		 344case "${enable_target_optspace}:${target}" in
345 yes:*)
346 target_makefile_frag="${target_makefile_frag} config/mt-ospace"
347 ;;
348 :m32r-*)
349 target_makefile_frag="${target_makefile_frag} config/mt-ospace"
350 ;;
351 no:* | :*)
352 ;;
353 *)
354 echo "*** bad value \"${enable_target_optspace}\" for --enable-target-optspace flag; ignored" 1>&2
355 ;;
356esac
357
6599da04
JM		 358skipdirs=
359gasdir=gas
360use_gnu_ld=
361use_gnu_as=
362
363# some tools are so dependent upon X11 that if we're not building with X,
364# it's not even worth trying to configure, much less build, that tool.
365
366case ${with_x} in
367 yes | "") # the default value for this tree is that X11 is available
368 ;;
369 no)
5d4a5ee6 370 skipdirs="${skipdirs} tk libgui gash"
6599da04
JM		 371 ;;
372 *)
373 echo "*** bad value \"${with_x}\" for -with-x flag; ignored" 1>&2
374 ;;
375esac
376
377# Some tools are only suitable for building in a "native" situation.
378# Those are added when we have a host==target configuration. For cross
379# toolchains, we add some directories that should only be useful in a
380# cross-compiler.
381
382is_cross_compiler=
383
384if [ x"${host}" = x"${target}" ] ; then
385 # when doing a native toolchain, don't build the targets
386 # that are in the 'cross only' list
387 skipdirs="${skipdirs} ${cross_only}"
388 is_cross_compiler=no
6599da04
JM		 389else
390 # similarly, don't build the targets in the 'native only'
391 # list when building a cross compiler
392 skipdirs="${skipdirs} ${native_only}"
393 is_cross_compiler=yes
6599da04
JM		 394fi
395
494933e4
JL		 396# We always want to use the same name for this directory, so that dejagnu
397# can reliably find it.
398target_subdir=${target_alias}
f653f0ab 399
6599da04
JM		 400if [ ! -d ${target_subdir} ] ; then
401 if mkdir ${target_subdir} ; then true
402 else
403 echo "'*** could not make ${PWD=`pwd`}/${target_subdir}" 1>&2
404 exit 1
405 fi
406fi
407
408copy_dirs=
409
410# Handle --with-headers=XXX. The contents of the named directory are
411# copied to $(tooldir)/sys-include.
412if [ x"${with_headers}" != x ]; then
413 if [ x${is_cross_compiler} = xno ]; then
414 echo 1>&2 '***' --with-headers is only supported when cross compiling
415 exit 1
416 fi
417 case "${exec_prefixoption}" in
418 "") x=${prefix} ;;
419 *) x=${exec_prefix} ;;
420 esac
421 copy_dirs="${copy_dirs} ${with_headers} $x/${target_alias}/sys-include"
422fi
423
424# Handle --with-libs=XXX. Multiple directories are permitted. The
425# contents are copied to $(tooldir)/lib.
426if [ x"${with_libs}" != x ]; then
427 if [ x${is_cross_compiler} = xno ]; then
428 echo 1>&2 '***' --with-libs is only supported when cross compiling
429 exit 1
430 fi
431 # Copy the libraries in reverse order, so that files in the first named
432 # library override files in subsequent libraries.
433 case "${exec_prefixoption}" in
434 "") x=${prefix} ;;
435 *) x=${exec_prefix} ;;
436 esac
437 for l in ${with_libs}; do
438 copy_dirs="$l $x/${target_alias}/lib ${copy_dirs}"
439 done
440fi
441
442# If both --with-headers and --with-libs are specified, default to
443# --without-newlib.
444if [ x"${with_headers}" != x ] && [ x"${with_libs}" != x ]; then
445 if [ x"${with_newlib}" = x ]; then
446 with_newlib=no
447 fi
448fi
449
450# Recognize --with-newlib/--without-newlib.
451if [ x${with_newlib} = xno ]; then
452 skipdirs="${skipdirs} target-newlib"
453elif [ x${with_newlib} = xyes ]; then
454 skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
455fi
456
457# Default to using --with-stabs for certain targets.
458if [ x${with_stabs} = x ]; then
459 case "${target}" in
460 mips*-*-irix6*)
461 ;;
c5ce8032 462 mips*-*-* | alpha*-*-osf*)
6599da04
JM		 463 with_stabs=yes;
464 withoptions="${withoptions} --with-stabs"
465 ;;
466 esac
467fi
468
469# Handle ${copy_dirs}
470set fnord ${copy_dirs}
471shift
472while [ $# != 0 ]; do
473 if [ -f $2/COPIED ] && [ x"`cat $2/COPIED`" = x"$1" ]; then
474 :
475 else
476 echo Copying $1 to $2
477
478 # Use the install script to create the directory and all required
479 # parent directories.
480 if [ -d $2 ]; then
481 :
482 else
483 echo >config.temp
484 ${srcdir}/install-sh -c -m 644 config.temp $2/COPIED
485 fi
486
487 # Copy the directory, assuming we have tar.
488 # FIXME: Should we use B in the second tar? Not all systems support it.
489 (cd $1; tar -cf - .) | (cd $2; tar -xpf -)
490
491 # It is the responsibility of the user to correctly adjust all
492 # symlinks. If somebody can figure out how to handle them correctly
493 # here, feel free to add the code.
494
495 echo $1 > $2/COPIED
496 fi
497 shift; shift
498done
499
500# Configure extra directories which are host specific
501
502case "${host}" in
503 i[3456]86-*-go32*)
504 configdirs="$configdirs dosrel" ;;
d39cd7a1
MK		 505 i[3456]86-*-mingw32*)
506 configdirs="$configdirs dosrel" ;;
6599da04
JM		 507 *-cygwin32*)
508 configdirs="$configdirs dosrel" ;;
509esac
510
511# Remove more programs from consideration, based on the host or
512# target this usually means that a port of the program doesn't
513# exist yet.
514
515noconfigdirs=""
516
517case "${host}" in
518 i[3456]86-*-vsta)
5d4a5ee6 519 noconfigdirs="tcl expect dejagnu make texinfo bison patch flex byacc send-pr gprof uudecode dejagnu diff guile perl apache inet itcl tix db snavigator gnuserv gettext"
6599da04
JM		 520 ;;
521 i[3456]86-*-go32* | i[3456]86-*-msdosdjgpp*)
5d4a5ee6 522 noconfigdirs="tcl tk expect dejagnu make texinfo bison patch flex byacc send-pr uudecode dejagnu diff guile perl apache inet itcl tix db snavigator gnuserv gettext"
6599da04 523 ;;
d39cd7a1 524 i[3456]86-*-mingw32*)
5d4a5ee6
JL		 525 # noconfigdirs="tcl tk expect dejagnu make texinfo bison patch flex byacc send-pr uudecode dejagnu diff guile perl apache inet itcl tix db snavigator gnuserv"
526 noconfigdirs="expect dejagnu cvs autoconf automake send-pr gprof rcs guile perl texinfo apache inet libtool"
d39cd7a1 527 ;;
6599da04 528 *-*-cygwin32)
82281fc2 529 noconfigdirs="autoconf automake send-pr gprof rcs guile perl apache inet"
6599da04
JM		 530 ;;
531 *-*-windows*)
532# This is only used to build WinGDB...
533# note that powerpc-eabi depends on sim configured before gdb.
534 configdirs="bfd libiberty opcodes readline sim gdb"
535 target_configdirs=
536 ;;
5d4a5ee6
JL		 537 *-*-netbsd*)
538 noconfigdirs="rcs"
539 ;;
6599da04 540 ppc*-*-pe)
5d4a5ee6 541 noconfigdirs="patch diff make tk tcl expect dejagnu cvssrc autoconf automake texinfo bison send-pr gprof rcs guile perl apache inet itcl tix db snavigator gnuserv"
6599da04
JM		 542 ;;
543esac
544
545
546case "${target}" in
547 *-*-netware)
548 noconfigdirs="$noconfigdirs target-libg++ target-libstdc++ target-librx target-newlib target-libiberty target-libgloss"
549 ;;
3fbc0b70
JS		 550 *-*-rtems*)
551 noconfigdirs="$noconfigdirs target-libgloss"
552 ;;
6599da04
JM		 553 *-*-vxworks*)
554 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
555 ;;
b104e095 556 alpha*-dec-osf*)
6599da04
JM		 557 # ld works, but does not support shared libraries. emacs doesn't
558 # work. newlib is not 64 bit ready. I'm not sure about fileutils.
559 # gas doesn't generate exception information.
560 noconfigdirs="$noconfigdirs gas ld emacs fileutils target-newlib target-libgloss"
561 ;;
562 alpha*-*-*vms*)
563 noconfigdirs="$noconfigdirs gdb ld target-newlib target-libgloss"
564 ;;
b104e095 565 alpha*-*-linux*)
e2de3a46
L		 566 # newlib is not 64 bit ready
567 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
568 # linux has rx in libc
569 skipdirs="$skipdirs target-librx"
570 ;;
6599da04
JM		 571 alpha*-*-*)
572 # newlib is not 64 bit ready
573 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
574 ;;
575 arc-*-*)
576 noconfigdirs="$noconfigdirs target-libgloss"
577 ;;
578 arm-*-pe*)
579 noconfigdirs="$noconfigdirs target-libgloss"
580 ;;
581 arm-*-coff*)
582 noconfigdirs="$noconfigdirs target-libgloss"
583 ;;
bbd8fa7f
CM		 584 arm-*-elf*)
585 noconfigdirs="$noconfigdirs target-libgloss"
586 if [ x${is_cross_compiler} != xno ] ; then
587 target_configdirs="${target_configdirs} target-bsp target-libstub target-cygmon"
588 fi
589 ;;
590 arm-*-oabi*)
591 noconfigdirs="$noconfigdirs target-libgloss"
592 if [ x${is_cross_compiler} != xno ] ; then
593 target_configdirs="${target_configdirs} target-bsp target-libstub target-cygmon"
594 fi
595 ;;
b9d6c60d
MH		 596 c4x-*-*)
597 noconfigdirs="$noconfigdirs target-libg++ target-libstdc++ target-libio target-librx target-libgloss"
598 ;;
e98e406f
NC		 599 thumb-*-coff)
600 noconfigdirs="$noconfigdirs target-libgloss"
601 ;;
5d4a5ee6
JL		 602 arm-*-riscix*)
603 noconfigdirs="$noconfigdirs ld target-libgloss"
604 ;;
6599da04
JM		 605 d10v-*-*)
606 noconfigdirs="$noconfigdirs target-librx target-libg++ target-libstdc++ target-libio target-libgloss"
607 ;;
608 h8300*-*-* | \
609 h8500-*-*)
610 noconfigdirs="$noconfigdirs target-libg++ target-libstdc++ target-libio target-librx target-libgloss"
611 ;;
612 hppa*-*-*elf* | \
3fbc0b70 613 hppa*-*-lites*)
6599da04
JM		 614 # Do configure ld/binutils/gas for this case.
615 ;;
616 hppa*-*-*)
617 # HP's C compiler doesn't handle Emacs correctly (but on BSD and Mach
618 # cc is gcc, and on any system a user should be able to link cc to
619 # whatever they want. FIXME, emacs emacs19).
620 case "${CC}" in
621 "" | cc*) noconfigdirs="$noconfigdirs emacs emacs19" ;;
622 *) ;;
623 esac
624 noconfigdirs="$noconfigdirs ld shellutils"
625 ;;
626 i[3456]86-*-go32* | i[3456]-*-msdosdjgpp*)
627 # but don't build gdb
628 noconfigdirs="$noconfigdirs gdb target-libg++ target-libstdc++ target-libio target-librx"
629 ;;
f401679e
JW		 630 *-*-linux*)
631 # linux has rx in libc
632 skipdirs="$skipdirs target-librx"
633 ;;
d39cd7a1
MK		 634 i[3456]86-*-mingw32*)
635 target_configdirs="$target_configdirs target-mingw"
636 noconfigdirs="$noconfigdirs expect target-libgloss"
637
5d4a5ee6 638 # Can't build gdb for mingw32 if not native.
d39cd7a1
MK		 639 case "${host}" in
640 i[3456]86-*-mingw32) ;; # keep gdb tcl tk expect etc.
5d4a5ee6 641 *) noconfigdirs="$noconfigdirs gdb tcl tk expect itcl tix db snavigator gnuserv"
d39cd7a1
MK		 642 ;;
643 esac
644 ;;
5d4a5ee6 645 *-*-cygwin32*)
6599da04 646 target_configdirs="$target_configdirs target-winsup"
5d4a5ee6 647 noconfigdirs="$noconfigdirs target-gperf target-libgloss"
6599da04
JM		 648 # always build newlib.
649 skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
650
651 # Can't build gdb for cygwin32 if not native.
652 case "${host}" in
5d4a5ee6
JL		 653 *-*-cygwin32*) ;; # keep gdb tcl tk expect etc.
654 *) noconfigdirs="$noconfigdirs gdb tcl tk expect itcl tix libgui db snavigator gnuserv"
6599da04
JM		 655 ;;
656 esac
657 ;;
658 i[3456]86-*-pe)
659 noconfigdirs="$noconfigdirs target-libg++ target-libstdc++ target-libio target-librx target-libgloss"
660 ;;
661 i[3456]86-*-sco3.2v5*)
662 # The linker does not yet know about weak symbols in COFF,
663 # and is not configured to handle mixed ELF and COFF.
5d4a5ee6 664 noconfigdirs="$noconfigdirs ld target-libgloss"
6599da04
JM		 665 ;;
666 i[3456]86-*-sco*)
667 noconfigdirs="$noconfigdirs gprof target-libgloss"
668 ;;
669 i[3456]86-*-solaris2*)
670 # The linker does static linking correctly, but the Solaris C library
671 # has bugs such that some important functions won't work when statically
672 # linked. (See man pages for getpwuid, for example.)
673 noconfigdirs="$noconfigdirs ld target-libgloss"
674 ;;
675 i[3456]86-*-sysv4*)
676 # The SYSV4 C compiler doesn't handle Emacs correctly
677 case "${CC}" in
678 "" | cc*) noconfigdirs="$noconfigdirs emacs emacs19" ;;
679 *) ;;
680 esac
681 # but that's okay since emacs doesn't work anyway
682 noconfigdirs="$noconfigdirs emacs emacs19 target-libgloss"
683 ;;
684 mn10200-*-*)
5d4a5ee6
JL		 685 noconfigdirs="$noconfigdirs"
686 if [ x${is_cross_compiler} != xno ] ; then
687 target_configdirs="${target_configdirs} target-libstub target-cygmon"
688 fi
6599da04
JM		 689 ;;
690 mn10300-*-*)
5d4a5ee6
JL		 691 noconfigdirs="$noconfigdirs"
692 if [ x${is_cross_compiler} != xno ] ; then
693 target_configdirs="${target_configdirs} target-libstub target-cygmon"
694 fi
6599da04
JM		 695 ;;
696 powerpc-*-aix*)
697 # copied from rs6000-*-* entry
5d4a5ee6 698 noconfigdirs="$noconfigdirs gprof cvssrc target-libgloss"
6599da04
JM		 699 # This is needed until gcc and ld are fixed to work together.
700 use_gnu_ld=no
701 ;;
702 powerpc*-*-winnt* | powerpc*-*-pe* | ppc*-*-pe)
703 target_configdirs="$target_configdirs target-winsup"
5d4a5ee6 704 noconfigdirs="$noconfigdirs gdb tcl tk make expect target-libgloss itcl tix db snavigator gnuserv"
6599da04
JM		 705 # always build newlib.
706 skipdirs=`echo " ${skipdirs} " | sed -e 's/ target-newlib / /'`
707 ;;
708 # This is temporary until we can link against shared libraries
709 powerpcle-*-solaris*)
5d4a5ee6 710 noconfigdirs="$noconfigdirs gdb sim make tcl tk expect itcl tix db snavigator gnuserv"
6599da04
JM		 711 ;;
712 rs6000-*-lynxos*)
713 # The CVS server code doesn't work on the RS/6000
714 # Newlib makes problems for libg++ in crosses.
5d4a5ee6 715 noconfigdirs="$noconfigdirs target-newlib gprof cvssrc"
6599da04
JM		 716 ;;
717 rs6000-*-aix*)
718 noconfigdirs="$noconfigdirs gprof"
719 # This is needed until gcc and ld are fixed to work together.
720 use_gnu_ld=no
721 ;;
722 rs6000-*-*)
723 noconfigdirs="$noconfigdirs gprof"
724 ;;
725 m68k-apollo-*)
726 noconfigdirs="$noconfigdirs ld binutils gprof target-libgloss"
727 ;;
728 mips*-*-irix5*)
729 # The GNU linker does not support shared libraries.
730 # emacs is emacs 18, which does not work on Irix 5 (emacs19 does work)
731 noconfigdirs="$noconfigdirs ld gprof emacs target-libgloss"
732 ;;
733 mips*-*-irix6*)
734 # The GNU assembler and linker do not support IRIX 6.
735 # emacs is emacs 18, which does not work on Irix 5 (emacs19 does work)
736 noconfigdirs="$noconfigdirs ld gas gprof emacs target-libgloss"
737 ;;
738 mips*-dec-bsd*)
739 noconfigdirs="$noconfigdirs gprof target-libgloss"
740 ;;
741 mips*-*-bsd*)
742 noconfigdirs="$noconfigdirs gprof target-libgloss"
743 ;;
5d4a5ee6
JL		 744 mipstx39-*-*)
745 noconfigdirs="$noconfigdirs gprof" # same as generic mips
746 target_configdirs="${target_configdirs} target-libstub target-cygmon"
747 ;;
6599da04
JM		 748 mips*-*-*)
749 noconfigdirs="$noconfigdirs gprof"
750 ;;
751 romp-*-*)
752 noconfigdirs="$noconfigdirs bfd binutils ld gas opcodes target-libgloss"
753 ;;
754 sh-*-*)
755 case "${host}" in
756 i[3456]86-*-vsta) ;; # don't add gprof back in
757 i[3456]86-*-go32*) ;; # don't add gprof back in
758 i[3456]86-*-msdosdjgpp*) ;; # don't add gprof back in
759 *) skipdirs=`echo " ${skipdirs} " | sed -e 's/ gprof / /'` ;;
760 esac
761 noconfigdirs="$noconfigdirs target-libgloss"
762 ;;
5d4a5ee6
JL		 763 sparc-*-elf*)
764 if [ x${is_cross_compiler} != xno ] ; then
765 target_configdirs="${target_configdirs} target-libstub target-cygmon"
766 fi
767 ;;
768 sparc64-*-elf*)
769 if [ x${is_cross_compiler} != xno ] ; then
770 target_configdirs="${target_configdirs} target-libstub target-cygmon"
771 fi
772 ;;
773 sparclite-*-aout*)
774 if [ x${is_cross_compiler} != xno ] ; then
775 target_configdirs="${target_configdirs} target-libstub target-cygmon"
776 fi
777 ;;
6599da04
JM		 778 sparc-*-sunos4*)
779 if [ x${is_cross_compiler} != xno ] ; then
780 noconfigdirs="$noconfigdirs gdb gdbtest target-newlib target-libgloss"
781 else
782 use_gnu_ld=no
783 fi
784 ;;
785 v810-*-*)
786 noconfigdirs="$noconfigdirs bfd binutils gas gcc gdb ld target-libio target-libg++ target-libstdc++ opcodes target-libgloss"
787 ;;
5d4a5ee6
JL		 788 v850-*-*)
789 noconfigdirs="$noconfigdirs target-libgloss"
790 ;;
6599da04
JM		 791 vax-*-vms)
792 noconfigdirs="$noconfigdirs bfd binutils gdb ld target-newlib opcodes target-libgloss"
793 ;;
794 vax-*-*)
795 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
796 ;;
797 *-*-lynxos*)
798 # Newlib makes problems for libg++ in crosses.
799 noconfigdirs="$noconfigdirs target-newlib target-libgloss"
800 ;;
801 *-*-macos* | \
802 *-*-mpw*)
803 # Macs want a resource compiler.
804 configdirs="$configdirs grez"
805 ;;
806esac
807
6599da04
JM		 808# If we aren't building newlib, then don't build libgloss, since libgloss
809# depends upon some newlib header files.
810case "${noconfigdirs}" in
811 *target-libgloss*) ;;
812 *target-newlib*) noconfigdirs="$noconfigdirs target-libgloss" ;;
813esac
814
6599da04
JM		 815# Make sure we don't let GNU ld be added if we didn't want it.
816if [ x$with_gnu_ld = xno ]; then
817 use_gnu_ld=no
818 noconfigdirs="$noconfigdirs ld"
819fi
820
821# Make sure we don't let GNU as be added if we didn't want it.
822if [ x$with_gnu_as = xno ]; then
823 use_gnu_as=no
824 noconfigdirs="$noconfigdirs gas"
825fi
826
827# Remove the entries in $skipdirs and $noconfigdirs from $configdirs and
828# $target_configdirs.
829# If we have the source for $noconfigdirs entries, add them to $notsupp.
830
831notsupp=""
832for dir in . $skipdirs $noconfigdirs ; do
833 dirname=`echo $dir | sed -e s/target-//g`
834 if [ $dir != . ] && echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
835 configdirs=`echo " ${configdirs} " | sed -e "s/ ${dir} / /"`
836 if [ -r $srcdir/$dirname/configure ] \
837 || [ -r $srcdir/$dirname/configure.in ]; then
838 if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
839 true
840 else
841 notsupp="$notsupp $dir"
842 fi
843 fi
844 fi
845 if [ $dir != . ] && echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
846 target_configdirs=`echo " ${target_configdirs} " | sed -e "s/ ${dir} / /"`
847 if [ -r $srcdir/$dirname/configure ] \
848 || [ -r $srcdir/$dirname/configure.in ]; then
849 if echo " ${skipdirs} " | grep " ${dir} " >/dev/null 2>&1; then
850 true
851 else
852 notsupp="$notsupp $dir"
853 fi
854 fi
855 fi
856done
857
858# Sometimes the tools are distributed with libiberty but with no other
859# libraries. In that case, we don't want to build target-libiberty.
860if [ -n "${target_configdirs}" ]; then
861 others=
862 for i in `echo ${target_configdirs} | sed -e s/target-//g` ; do
863 if [ "$i" != "libiberty" ]; then
864 if [ -r $srcdir/$i/configure ] || [ -r $srcdir/$i/configure.in ]; then
865 others=yes;
866 break;
867 fi
868 fi
869 done
870 if [ -z "${others}" ]; then
871 target_configdirs=
872 fi
873fi
874
875# Deconfigure all subdirectories, in case we are changing the
876# configuration from one where a subdirectory is supported to one where it
877# is not.
5d4a5ee6 878if [ -z "${norecursion}" ] && [ -n "${configdirs}" ]; then
6599da04
JM		 879 for i in `echo ${configdirs} | sed -e s/target-//g` ; do
880 rm -f $i/Makefile
881 done
882fi
5d4a5ee6 883if [ -z "${norecursion}" ] && [ -n "${target_configdirs}" ]; then
6599da04
JM		 884 for i in `echo ${target_configdirs} | sed -e s/target-//g` ; do
885 rm -f ${target_subdir}/$i/Makefile
886 done
887fi
888
889# Produce a warning message for the subdirs we can't configure.
890# This isn't especially interesting in the Cygnus tree, but in the individual
891# FSF releases, it's important to let people know when their machine isn't
892# supported by the one or two programs in a package.
893
894if [ -n "${notsupp}" ] && [ -z "${norecursion}" ]; then
895 # If $appdirs is non-empty, at least one of those directories must still
896 # be configured, or we error out. (E.g., if the gas release supports a
897 # specified target in some subdirs but not the gas subdir, we shouldn't
898 # pretend that all is well.)
899 if [ -n "$appdirs" ]; then
900 for dir in $appdirs ; do
901 if [ -r $dir/Makefile.in ]; then
902 if echo " ${configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
903 appdirs=""
904 break
905 fi
906 if echo " ${target_configdirs} " | grep " ${dir} " >/dev/null 2>&1; then
907 appdirs=""
908 break
909 fi
910 fi
911 done
912 if [ -n "$appdirs" ]; then
913 echo "*** This configuration is not supported by this package." 1>&2
914 exit 1
915 fi
916 fi
917 # Okay, some application will build, or we don't care to check. Still
918 # notify of subdirs not getting built.
919 echo "*** This configuration is not supported in the following subdirectories:" 1>&2
920 echo " ${notsupp}" 1>&2
921 echo " (Any other directories should still work fine.)" 1>&2
922fi
923
924# Set with_gnu_as and with_gnu_ld as appropriate.
925#
926# This is done by determining whether or not the appropriate directory
927# is available, and by checking whether or not specific configurations
928# have requested that this magic not happen.
929#
930# The command line options always override the explicit settings in
931# configure.in, and the settings in configure.in override this magic.
932#
933# If the default for a toolchain is to use GNU as and ld, and you don't
934# want to do that, then you should use the --without-gnu-as and
935# --without-gnu-ld options for the configure script.
936
937if [ x${use_gnu_as} = x ] ; then
938 if [ x${with_gnu_as} != xno ] && echo " ${configdirs} " | grep " ${gasdir} " > /dev/null 2>&1 && [ -d ${srcdir}/${gasdir} ] ; then
939 with_gnu_as=yes
940 withoptions="$withoptions --with-gnu-as"
941 fi
942fi
943
944if [ x${use_gnu_ld} = x ] ; then
945 if [ x${with_gnu_ld} != xno ] && echo " ${configdirs} " | grep " ld " > /dev/null 2>&1 && [ -d ${srcdir}/ld ] ; then
946 with_gnu_ld=yes
947 withoptions="$withoptions --with-gnu-ld"
948 fi
949fi
950
951# If using newlib, add --with-newlib to the withoptions so that gcc/configure
952# can detect this case.
953
954if [ x${with_newlib} != xno ] && echo " ${target_configdirs} " | grep " target-newlib " > /dev/null 2>&1 && [ -d ${srcdir}/newlib ] ; then
955 with_newlib=yes
956 withoptions="$withoptions --with-newlib"
957fi
958
959if [ x${shared} = xyes ]; then
960 case "${target}" in
e2de3a46
L		 961 hppa*)
962 target_makefile_frag="${target_makefile_frag} config/mt-papic"
963 ;;
964 i[3456]86-*)
965 target_makefile_frag="${target_makefile_frag} config/mt-x86pic"
966 ;;
967 powerpc*-*)
968 target_makefile_frag="${target_makefile_frag} config/mt-ppcpic"
969 ;;
b104e095 970 alpha*-*-linux*)
e2de3a46
L		 971 target_makefile_frag="${target_makefile_frag} config/mt-elfalphapic"
972 ;;
973 *)
520ab477 974 if test -f ${srcdir}/config/mt-${target_cpu}pic; then
4bcdb76d
AO		 975 target_makefile_frag="${target_makefile_frag} config/mt-${target_cpu}pic"
976 fi
e2de3a46 977 ;;
6599da04
JM		 978 esac
979fi
980
e2de3a46
L		 981rm -f mt-frag
982if [ -n "${target_makefile_frag}" ] ; then
983 for f in ${target_makefile_frag}
984 do
985 cat ${srcdir}/$f >> mt-frag
986 done
987 target_makefile_frag=mt-frag
988fi
989
6599da04
JM		 990# post-target:
991
992# Make sure that the compiler is able to generate an executable. If it
993# can't, we are probably in trouble. We don't care whether we can run the
994# executable--we might be using a cross compiler--we only care whether it
995# can be created. At this point the main configure script has set CC.
996echo "int main () { return 0; }" > conftest.c
997${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c
5d4a5ee6 998if [ $? = 0 ] && [ -s conftest -o -s conftest.exe ]; then
6599da04
JM		 999 :
1000else
1001 echo 1>&2 "*** The command '${CC} -o conftest ${CFLAGS} ${CPPFLAGS} ${LDFLAGS} conftest.c' failed."
1002 echo 1>&2 "*** You must set the environment variable CC to a working compiler."
1003 rm -f conftest*
1004 exit 1
1005fi
1006rm -f conftest*
1007
1008# The Solaris /usr/ucb/cc compiler does not appear to work.
1009case "${host}" in
1010 sparc-sun-solaris2*)
1011 CCBASE="`echo ${CC-cc} | sed 's/ .*$//'`"
1012 if [ "`/usr/bin/which $CCBASE`" = "/usr/ucb/cc" ] ; then
1013 could_use=
1014 [ -d /opt/SUNWspro/bin ] && could_use="/opt/SUNWspro/bin"
1015 if [ -d /opt/cygnus/bin ] ; then
1016 if [ "$could_use" = "" ] ; then
1017 could_use="/opt/cygnus/bin"
1018 else
1019 could_use="$could_use or /opt/cygnus/bin"
1020 fi
1021 fi
1022 if [ "$could_use" = "" ] ; then
1023 echo "Warning: compilation may fail because you're using"
1024 echo "/usr/ucb/cc. You should change your PATH or CC "
1025 echo "variable and rerun configure."
1026 else
1027 echo "Warning: compilation may fail because you're using"
1028 echo "/usr/ucb/cc, when you should use the C compiler from"
1029 echo "$could_use. You should change your"
1030 echo "PATH or CC variable and rerun configure."
1031 fi
1032 fi
1033 ;;
1034esac
1035
1036# If --enable-shared was set, we must set LD_LIBRARY_PATH so that the
1037# binutils tools will find libbfd.so.
1038if [ "${shared}" = "yes" ]; then
1039 sed -e 's/^SET_LIB_PATH[ ]*=.*$/SET_LIB_PATH = $(REALLY_SET_LIB_PATH)/' \
1040 Makefile > Makefile.tem
1041 rm -f Makefile
1042 mv -f Makefile.tem Makefile
1043
1044 case "${host}" in
1045 *-*-hpux*)
5d4a5ee6 1046 sed -e 's/^RPATH_ENVVAR[ ]*=.*$/RPATH_ENVVAR = SHLIB_PATH/' \
6599da04
JM		 1047 Makefile > Makefile.tem
1048 rm -f Makefile
1049 mv -f Makefile.tem Makefile
1050 ;;
1051 esac
1052fi
1053
6599da04
JM		 1054# Record target_configdirs and the configure arguments in Makefile.
1055target_configdirs=`echo "${target_configdirs}" | sed -e 's/target-//g'`
1056targargs=`echo "${arguments}" | \
5d4a5ee6 1057 sed -e 's/--no[^ ]*//' \
6599da04
JM		 1058 -e 's/--cache[a-z-]*=[^ ]*//' \
1059 -e 's/--ho[a-z-]*=[^ ]*//' \
1060 -e 's/--bu[a-z-]*=[^ ]*//' \
1061 -e 's/--ta[a-z-]*=[^ ]*//'`
1062
1063# Passing a --with-cross-host argument lets the target libraries know
1064# whether they are being built with a cross-compiler or being built
1065# native. However, it would be better to use other mechanisms to make the
1066# sorts of decisions they want to make on this basis. Please consider
1067# this option to be deprecated. FIXME.
1068if [ x${is_cross_compiler} = xyes ]; then
1069 targargs="--with-cross-host=${host_alias} ${targargs}"
1070fi
1071
1072# Default to --enable-multilib.
1073if [ x${enable_multilib} = x ]; then
1074 targargs="--enable-multilib ${targargs}"
1075fi
1076
5d4a5ee6
JL		 1077# Pass --with-newlib if appropriate. Note that target_configdirs has
1078# changed from the earlier setting of with_newlib.
1079if [ x${with_newlib} != xno ] && echo " ${target_configdirs} " | grep " newlib " > /dev/null 2>&1 && [ -d ${srcdir}/newlib ] ; then
1080 targargs="--with-newlib ${targargs}"
1081fi
1082
88101ab9
L		 1083# provide a proper gxx_include_dir.
1084# Note, if you change the default, make sure to fix both here and in
1085# the gcc, libio, libstdc++ and libg++ subdirectories.
1086# Check whether --with-gxx-include-dir or --without-gxx-include-dir was given.
1087gxx_include_dir=
1088if test -n "${with_gxx_include_dir}"; then
1089 case "${with_gxx_include_dir}" in
1090 yes )
1091 echo "configure.in: error: bad value ${withval} given for g++ include directory" 1>&2
1092 exit 1
1093 ;;
1094 no )
1095 ;;
1096 * )
1097 gxx_include_dir=${with_gxx_include_dir}
1098 ;;
1099 esac
1100fi
1101if test x${gxx_include_dir} = x; then
1102 if test x${enable_version_specific_runtime_libs} = xyes; then
1103 gxx_include_dir='${libsubdir}/include/g++'
1104 else
1105 . ${topsrcdir}/config.if
1106 gxx_include_dir='${prefix}/include/g++'-${libstdcxx_interface}
1107 fi
1108else
1109 gxx_include_dir=${gxx_include_dir}
1110fi
1111
6599da04
JM		 1112targargs="--host=${target_alias} --build=${build_alias} ${targargs}"
1113sed -e "s:^TARGET_CONFIGDIRS[ ]*=.*$:TARGET_CONFIGDIRS = ${target_configdirs}:" \
1114 -e "s%^CONFIG_ARGUMENTS[ ]*=.*$%CONFIG_ARGUMENTS = ${targargs}%" \
1115 -e "s%^TARGET_SUBDIR[ ]*=.*$%TARGET_SUBDIR = ${target_subdir}%" \
88101ab9 1116 -e "s%^gxx_include_dir[ ]*=.*$%gxx_include_dir=${gxx_include_dir}%" \
6599da04
JM		 1117 Makefile > Makefile.tem
1118rm -f Makefile
1119mv -f Makefile.tem Makefile
1120
1121#
1122# Local Variables:
1123# fill-column: 131
1124# End:
1125#
Mirror of https://gcc.gnu.org/git/gcc.git