configure

   1 #!/bin/sh
   2
   3 ### WARNING: this file contains embedded tabs.  Do not run untabify on this file.
   4
   5 # Configuration script
   6 # Copyright (C) 1988, 90, 91, 92, 93, 94 Free Software Foundation, Inc.
   7
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 2 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program; if not, write to the Free Software
  20 # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21
  22 # Please email any bugs, comments, and/or additions to this file to:
  23 # configure@cygnus.com
  24
  25 # This file was written by K. Richard Pixley.
  26
  27 #
  28 # Shell script to create proper links to machine-dependent files in
  29 # preparation for compilation.
  30 #
  31 # If configure succeeds, it leaves its status in config.status.
  32 # If configure fails after disturbing the status quo,
  33 #       config.status is removed.
  34 #
  35
  36 export PATH || (echo "OOPS, this isn't sh.  Desperation time.  I will feed myself to sh."; sh $0 $argv; kill $$)
  37
  38 remove=rm
  39 hard_link=ln
  40 symbolic_link='ln -s'
  41
  42 #for Test
  43 #remove="echo rm"
  44 #hard_link="echo ln"
  45 #symbolic_link="echo ln -s"
  46
  47 # clear some things potentially inherited from environment.
  48
  49 Makefile=Makefile
  50 Makefile_in=Makefile.in
  51 arguments=$*
  52 build_alias=
  53 configdirs=
  54 exec_prefix=
  55 exec_prefixoption=
  56 fatal=
  57 floating_point=default
  58 gas=default
  59 host_alias=NOHOST
  60 host_makefile_frag=
  61 moveifchange=
  62 norecursion=
  63 other_options=
  64 package_makefile_frag=
  65 prefix=/usr/local
  66 progname=
  67 program_prefix=
  68 program_prefixoption=
  69 program_suffix=
  70 program_suffixoption=
  71 program_transform_name=
  72 program_transform_nameoption=
  73 redirect=">/dev/null"
  74 removing=
  75 site=
  76 site_makefile_frag=
  77 site_option=
  78 srcdir=
  79 srctrigger=
  80 subdirs=
  81 target_alias=NOTARGET
  82 target_makefile_frag=
  83 undefs=NOUNDEFS
  84 version="$Revision$"
  85 x11=default
  86
  87 ### we might need to use some other shell than /bin/sh for running subshells
  88 #
  89 config_shell=${CONFIG_SHELL-/bin/sh}
  90
  91 NO_EDIT="This file was generated automatically by configure.  Do not edit."
  92
  93 ## this is a little touchy and won't always work, but...
  94 ##
  95 ## if the argv[0] starts with a slash then it is an absolute name that can (and
  96 ## must) be used as is.
  97 ##
  98 ## otherwise, if argv[0] has no slash in it, we can assume that it is on the
  99 ## path.  Since PATH might include "." we also add `pwd` to the end of PATH.
 100 ##
 101
 102 progname=$0
 103 # if PWD already has a value, it is probably wrong.
 104 if [ -n "$PWD" ]; then PWD=`pwd`; fi
 105
 106 case "${progname}" in
 107 /*) ;;
 108 */*) ;;
 109 *)
 110         PATH=$PATH:${PWD=`pwd`} ; export PATH
 111         ;;
 112 esac
 113
 114 # Loop over all args
 115
 116 while :
 117 do
 118
 119 # Break out if there are no more args
 120         case $# in
 121         0)
 122                 break
 123                 ;;
 124         esac
 125
 126 # Get the first arg, and shuffle
 127         option=$1
 128         shift
 129
 130 # Make all options have two hyphens
 131         orig_option=$option     # Save original for error messages
 132         case $option in
 133         --*) ;;
 134         -*) option=-$option ;;
 135         esac
 136
 137 # Split out the argument for options that take them
 138         case $option in
 139         --*=*)
 140                 optarg=`echo $option | sed -e 's/^[^=]*=//'`
 141                 ;;
 142 # These options have mandatory values.  Since we didn't find an = sign,
 143 # the value must be in the next argument
 144         --b* | --ex* | --ho* | --pre* | --program-p* | --program-s* | --program-t* | --si* | --sr* | --ta* | --tm*)
 145                 optarg=$1
 146                 shift
 147                 ;;
 148         esac
 149
 150 # Now, process the options
 151         case $option in
 152
 153         --build* | --b*)
 154                 case "$build_alias" in
 155                 "") build_alias=$optarg ;;
 156                 *) echo '***' Can only configure for one build machine at a time.  1>&2
 157                    fatal=yes
 158                    ;;
 159                 esac
 160                 ;;
 161         --disable-*)
 162                 enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'`
 163                 eval $enableopt=no
 164                 disableoptions="$disableoptions $option"
 165                 ;;
 166         --enable-*)
 167                 case "$option" in
 168                 *=*)    ;;
 169                 *)      optarg=yes ;;
 170                 esac
 171
 172                 enableopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
 173                 eval $enableopt="$optarg"
 174                 enableoptions="$enableoptions $option"
 175                 ;;
 176         --exec-prefix* | --ex*)
 177                 exec_prefix=$optarg
 178                 exec_prefixoption="--exec-prefix=$optarg"
 179                 ;;
 180         --gas | --g*)
 181                 gas=yes
 182                 ;;
 183         --help | --he*)
 184                 fatal=yes
 185                 ;;
 186         --host* | --ho*)
 187                 case $host_alias in
 188                 NOHOST) host_alias=$optarg ;;
 189                 *) echo '***' Can only configure for one host at a time.  1>&2
 190                    fatal=yes
 191                    ;;
 192                 esac
 193                 ;;
 194         --nfp | --nf*)
 195                 floating_point=no
 196                 ;;
 197         --norecursion | --no*)
 198                 norecursion=yes
 199                 ;;
 200         --prefix* | --pre*)
 201                 prefix=$optarg
 202                 prefixoption="--prefix=$optarg"
 203                 ;;
 204         --program-prefix* | --program-p*)
 205                 program_prefix=$optarg
 206                 program_prefixoption="--program-prefix=$optarg"
 207                 ;;
 208         --program-suffix* | --program-s*)
 209                 program_suffix=$optarg
 210                 program_suffixoption="--program-suffix=$optarg"
 211                 ;;
 212         --program-transform-name* | --program-t*)
 213                 # Double any backslashes or dollar signs in the argument
 214                 program_transform_name="${program_transform_name} -e `echo ${optarg} | sed -e 's/\\\\/\\\\\\\\/g' -e 's/\\\$/$$/g'`"
 215                 program_transform_nameoption="--program-transform-nameoption='$optarg'"
 216                 ;;
 217         --rm)
 218                 removing=--rm
 219                 ;;
 220         --site* | --si*)
 221                 site=$optarg
 222                 site_option="--site=$optarg"
 223                 ;;
 224         --srcdir*/ | --sr*/)
 225                 # Remove trailing slashes.  Otherwise, when the file name gets
 226                 # bolted into an object file as debug info, it has two slashes in
 227                 # it.  Ordinarily this is ok, but emacs takes double slash to
 228                 # mean "forget the first part".
 229                 srcdir=`echo $optarg | sed -e 's:/$::'`
 230                 ;;
 231         --srcdir* | --sr*)
 232                 srcdir=$optarg
 233                 ;;
 234         --target* | --ta*)
 235                 case $target_alias in
 236                 NOTARGET) target_alias=$optarg ;;
 237                 *) echo '***' Can only configure for one target at a time.  1>&2
 238                    fatal=yes
 239                    ;;
 240                 esac
 241                 ;;
 242         --tmpdir* | --tm*)
 243                 TMPDIR=$optarg
 244                 tmpdiroption="--tmpdir=$optarg"
 245                 ;;
 246         --verbose | --v | --verb*)
 247                 redirect=
 248                 verbose=--verbose
 249                 ;;
 250         --version | --V | --vers*)
 251                 echo "This is Cygnus Configure version" `echo ${version} | sed 's/[ $:]//g'`
 252                 exit 0
 253                 ;;
 254         --with-*)
 255                 case "$option" in
 256                 *=*)    ;;
 257                 *)      optarg=yes ;;
 258                 esac
 259
 260                 withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
 261                 eval $withopt="$optarg"
 262                 withoptions="$withoptions $option"
 263                 ;;
 264         --without-*)
 265                 withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'`
 266                 eval $withopt=no
 267                 withoutoptions="$withoutoptions $option"
 268                 ;;
 269         --x)    with_x=yes
 270                 withoptions="$withoptions --with-x"
 271                 ;;
 272         --*)
 273                 echo "Warning: Unrecognized option: \"$orig_option\"". >&2
 274                 # Pass the option to any configure scripts in subdirectories
 275                 # in case they recognize it.
 276                 other_options="$other_options $orig_option"
 277                 ;;
 278         *)
 279                 case $undefs in
 280                 NOUNDEFS) undefs=$option ;;
 281                 *) echo '***' Can only configure for one host and one target at a time.  1>&2
 282                    fatal=yes
 283                    ;;
 284                 esac
 285                 ;;
 286         esac
 287 done
 288
 289 # process host and target
 290
 291 # Do some error checking and defaulting for the host and target type.
 292 # The inputs are:
 293 #    configure --host=HOST --target=TARGET UNDEFS
 294 #
 295 # The rules are:
 296 # 1. You aren't allowed to specify --host, --target, and undefs at the
 297 #    same time.
 298 # 2. Host defaults to undefs.
 299 # 3. If undefs is not specified, then host defaults to the current host,
 300 #    as determined by config.guess.
 301 # 4. Target defaults to undefs.
 302 # 5. If undefs is not specified, then target defaults to host.
 303
 304 case "${fatal}" in
 305 "")
 306         # Make sure that host, target & undefs aren't all specified at the
 307         # same time.
 308         case $host_alias---$target_alias---$undefs in
 309         NOHOST---*---* | *---NOTARGET---* | *---*---NOUNDEFS)
 310                 ;;
 311         *) echo '***' Can only configure for one host and one target at a time.  1>&2
 312            fatal=yes
 313            break 2
 314                 ;;
 315         esac
 316
 317         # Now, do defaulting for host.
 318         case $host_alias in
 319         NOHOST)
 320                 case $undefs in
 321                 NOUNDEFS)
 322                         # Neither --host option nor undefs were present.
 323                         # Call config.guess.
 324                         guesssys=`echo ${progname} | sed 's/configure$/config.guess/'`
 325                         if host_alias=`${guesssys}`
 326                         then
 327                                 echo "Configuring for a ${host_alias} host." 1>&2
 328                                 arguments="--host=$host_alias $arguments"
 329                         else
 330                                 echo 'Config.guess failed to determine the host type.  You need to specify one.' 1>&2
 331                                 fatal=yes
 332                         fi
 333                         ;;
 334                 *)
 335                         host_alias=$undefs
 336                         ;;
 337                 esac
 338         esac
 339
 340         # Do defaulting for target.  If --target option isn't present, default
 341         # to undefs.  If undefs isn't present, default to host.
 342         case $target_alias in
 343         NOTARGET)
 344                 case $undefs in
 345                 NOUNDEFS)
 346                         target_alias=$host_alias
 347                         ;;
 348                 *)
 349                         target_alias=$undefs
 350                         ;;
 351                 esac
 352         esac
 353         ;;
 354 *) ;;
 355 esac
 356
 357 if [ -n "${fatal}" -o "${host_alias}" = "help" ] ; then
 358         exec 1>&2
 359         echo Usage: configure HOST
 360         echo
 361         echo Options: [defaults in brackets]
 362         echo ' --prefix=MYDIR            configure for installation of host independent files into MYDIR. ["/usr/local"]'
 363         echo ' --exec-prefix=MYDIR       configure for installation of host dependent files into MYDIR. ["/usr/local"]'
 364         echo ' --help                    print this message. [normal config]'
 365         echo ' --build=BUILD             configure for building on BUILD.  [BUILD=HOST]'
 366         echo ' --host=HOST               configure for HOST.  [determined via config.guess]'
 367         echo ' --norecursion             configure this directory only. [recurse]'
 368         echo ' --program-prefix=FOO      install programs with FOO prepended to their names. [ "" ]'
 369         echo ' --program-suffix=FOO      install programs with FOO appended to their names. [ "" ]'
 370         echo ' --program-transform-name=FOO install programs with names transformed by sed pattern FOO. [ "" ]'
 371         echo ' --site=SITE               configure with site specific makefile for SITE'
 372         echo ' --srcdir=DIR              find the sources in DIR. ["." or ".."]'
 373         echo ' --target=TARGET   configure for TARGET.  [TARGET = HOST]'
 374         echo ' --tmpdir=TMPDIR   create temporary files in TMPDIR.  [ TMPDIR = "/tmp" ]'
 375         echo ' --nfp                     configure the compilers default to soft floating point. [hard float]'
 376         echo ' --with-FOO, --with-FOO=BAR package FOO is available (parameter BAR)'
 377         echo ' --without-FOO             package FOO is NOT available'
 378         echo ' --enable-FOO, --enable-FOO=BAR include feature FOO (parameter BAR)'
 379         echo ' --disable-FOO             do not include feature FOO'
 380         echo
 381         echo 'Where HOST and TARGET are something like "vax", "sun3", "encore", etc.'
 382         echo
 383         if [ -r config.status ] ; then
 384                 cat config.status
 385         fi
 386
 387         exit 1
 388 fi
 389
 390 configsub=`echo ${progname} | sed 's/configure$/config.sub/'`
 391 moveifchange=`echo ${progname} | sed 's/configure$/move-if-change/'`
 392
 393 # this is a hack.  sun4 must always be a valid host alias or this will fail.
 394 if ${configsub} sun4 >/dev/null 2>&1 ; then
 395         true
 396 else
 397         echo '***' cannot find config.sub.  1>&2
 398         exit 1
 399 fi
 400
 401 touch config.junk
 402 if ${moveifchange} config.junk config.trash ; then
 403         true
 404 else
 405         echo '***' cannot find move-if-change.  1>&2
 406         exit 1
 407 fi
 408 rm -f config.junk config.trash
 409
 410 case "${srcdir}" in
 411 "")
 412         if [ -r configure.in ] ; then
 413                 srcdir=.
 414         else
 415                 if [ -r ${progname}.in ] ; then
 416                         srcdir=`echo ${progname} | sed 's:/configure$::'`
 417                 else
 418                         echo '***' "Can't find configure.in.  Try using --srcdir=some_dir"  1>&2
 419                         exit 1
 420                 fi
 421         fi
 422         ;;
 423 *) ;;
 424 esac
 425
 426 ### warn about some conflicting configurations.
 427
 428 case "${srcdir}" in
 429 ".") ;;
 430 *)
 431         if [ -f ${srcdir}/config.status ] ; then
 432                 echo '***' Cannot configure here in \"${PWD=`pwd`}\" when \"${srcdir}\" is currently configured. 1>&2
 433                 exit 1
 434         fi
 435 esac
 436
 437 # default exec_prefix
 438 case "${exec_prefix}" in
 439 "") exec_prefix="\$(prefix)" ;;
 440 *) ;;
 441 esac
 442
 443 ### break up ${srcdir}/configure.in.
 444 case "`grep '^# per\-host:' ${srcdir}/configure.in`" in
 445 "")
 446         echo '***' ${srcdir}/configure.in has no \"per-host:\" line. 1>&2
 447         exit 1
 448         ;;
 449 *) ;;
 450 esac
 451
 452 case "`grep '^# per\-target:' ${srcdir}/configure.in`" in
 453 "")
 454         echo '***' ${srcdir}/configure.in has no \"per-target:\" line. 1>&2
 455         exit 1
 456         ;;
 457 *) ;;
 458 esac
 459
 460 case "${TMPDIR}" in
 461 "") TMPDIR=/tmp ; export TMPDIR ;;
 462 *) ;;
 463 esac
 464
 465 # keep this filename short for &%*%$*# 14 char file names
 466 tmpfile=${TMPDIR}/cONf$$
 467 trap "rm -f ${tmpfile}.com ${tmpfile}.tgt ${tmpfile}.hst ${tmpfile}.pos" 0
 468
 469 # split ${srcdir}/configure.in into common, per-host, per-target,
 470 # and post-target parts.  Post-target is optional.
 471 sed -e '/^# per\-host:/,$d' ${srcdir}/configure.in > ${tmpfile}.com
 472 sed -e '1,/^# per\-host:/d' -e '/^# per\-target:/,$d' ${srcdir}/configure.in > ${tmpfile}.hst
 473 if grep '^# post-target:' ${srcdir}/configure.in >/dev/null ; then
 474   sed -e '1,/^# per\-target:/d' -e '/^# post\-target:/,$d' ${srcdir}/configure.in > ${tmpfile}.tgt
 475   sed -e '1,/^# post\-target:/d' ${srcdir}/configure.in > ${tmpfile}.pos
 476 else
 477   sed -e '1,/^# per\-target:/d' ${srcdir}/configure.in > ${tmpfile}.tgt
 478   echo >${tmpfile}.pos
 479 fi
 480
 481 ### do common part of configure.in
 482
 483 . ${tmpfile}.com
 484
 485 # some sanity checks on configure.in
 486 case "${srctrigger}" in
 487 "")
 488         echo '***' srctrigger not set in ${PWD=`pwd`}/configure.in.  1>&2
 489         exit 1
 490         ;;
 491 *) ;;
 492 esac
 493
 494 case "${build_alias}" in
 495 "")     ;;
 496 *)
 497         result=`${configsub} ${build_alias}`
 498         buildopt="--build=${build_alias}"
 499         build_cpu=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\1/'`
 500         build_vendor=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\2/'`
 501         build_os=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\3/'`
 502         build=${build_cpu}-${build_vendor}-${build_os}
 503         ;;
 504 esac
 505
 506 result=`${configsub} ${host_alias}`
 507 host_cpu=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\1/'`
 508 host_vendor=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\2/'`
 509 host_os=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\3/'`
 510 host=${host_cpu}-${host_vendor}-${host_os}
 511
 512 . ${tmpfile}.hst
 513
 514 result=`${configsub} ${target_alias}`
 515 target_cpu=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\1/'`
 516 target_vendor=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\2/'`
 517 target_os=`echo $result | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\3/'`
 518 target=${target_cpu}-${target_vendor}-${target_os}
 519
 520 . ${tmpfile}.tgt
 521
 522 # Find the source files, if location was not specified.
 523 case "${srcdir}" in
 524 "")
 525         srcdirdefaulted=1
 526         srcdir=.
 527         if [ ! -r ${srctrigger} ] ; then
 528                 srcdir=..
 529         fi
 530         ;;
 531 *) ;;
 532 esac
 533
 534 if [ ! -r ${srcdir}/${srctrigger} ] ; then
 535         case "${srcdirdefaulted}" in
 536         "") echo '***' "${progname}: Can't find ${srcname} sources in ${PWD=`pwd`}/${srcdir}" 1>&2 ;;
 537         *)  echo '***' "${progname}: Can't find ${srcname} sources in ${PWD=`pwd`}/. or ${PWD=`pwd`}/.." 1>&2 ;;
 538         esac
 539
 540         echo '***' \(At least ${srctrigger} is missing.\) 1>&2
 541         exit 1
 542 fi
 543
 544 # Some systems (e.g., one of the i386-aix systems the gas testers are
 545 # using) don't handle "\$" correctly, so don't use it here.
 546 tooldir='$(exec_prefix)'/${target_alias}
 547
 548 if [ "${host_alias}" != "${target_alias}" ] ; then
 549     if [ "${program_prefixoption}" = "" ] ; then
 550         if [ "${program_suffixoption}" = "" ] ; then
 551             if [ "${program_transform_nameoption}" = "" ] ; then
 552                 program_prefix=${target_alias}- ;
 553             fi
 554         fi
 555     fi
 556 fi
 557
 558 # Merge program_prefix and program_suffix onto program_transform_name
 559 # Use a double $ so that make ignores it
 560 if [ "${program_suffix}" != "" ] ; then
 561     program_transform_name="-e s,\$\$,${program_suffix}, ${program_transform_name}"
 562 fi
 563
 564 if [ "${program_prefix}" != "" ] ; then
 565     program_transform_name="-e s,^,${program_prefix}, ${program_transform_name}"
 566 fi
 567
 568 for subdir in . ${subdirs} ; do
 569
 570     # ${subdir} is relative path from . to the directory we're currently
 571     # configuring.
 572     # ${invsubdir} is inverse of ${subdir), *with* trailing /, if needed.
 573     invsubdir=`echo ${subdir}/ | sed -e 's|\./||g' -e 's|[^/]*/|../|g'`
 574
 575     ### figure out what to do with srcdir
 576     case "${srcdir}" in
 577         ".")  # no -srcdir option.  We're building in place.
 578                 makesrcdir=. ;;
 579         /*) # absolute path
 580                 makesrcdir=`echo ${srcdir}/${subdir} | sed -e 's|/\.$||'`
 581                 ;;
 582         *) # otherwise relative
 583                 case "${subdir}" in
 584                 .) makesrcdir=${srcdir} ;;
 585                 *) makesrcdir=${invsubdir}${srcdir}/${subdir} ;;
 586                 esac
 587                 ;;
 588     esac
 589
 590     if [ "${subdir}/" != "./" ] ; then
 591         Makefile=${subdir}/Makefile
 592     fi
 593
 594     if [ ! -d ${subdir} ] ; then
 595         if mkdir ${subdir} ; then
 596                 true
 597         else
 598                 echo '***' "${progname}: could not make ${PWD=`pwd`}/${subdir}" 1>&2
 599                 exit 1
 600         fi
 601     fi
 602
 603     case "${removing}" in
 604     "")
 605         case "${subdir}" in
 606         .) ;;
 607         *) eval echo Building in ${subdir} ${redirect} ;;
 608         esac
 609
 610         # FIXME Should this be done recursively ??? (Useful for e.g. gdbtest)
 611         # Set up the list of links to be made.
 612         # ${links} is the list of link names, and ${files} is the list of names to link to.
 613
 614         # Make the links.
 615         configlinks="${links}"
 616         if [ -r ${subdir}/config.status ] ; then
 617                 mv -f ${subdir}/config.status ${subdir}/config.back
 618         fi
 619         while [ -n "${files}" ] ; do
 620                 # set file to car of files, files to cdr of files
 621                 set ${files}; file=$1; shift; files=$*
 622                 set ${links}; link=$1; shift; links=$*
 623
 624                 if [ ! -r ${srcdir}/${file} ] ; then
 625                         echo '***' "${progname}: cannot create a link \"${link}\"," 1>&2
 626                         echo '***' "since the file \"${srcdir}/${file}\" does not exist." 1>&2
 627                         exit 1
 628                 fi
 629
 630                 ${remove} -f ${link}
 631                 # Make a symlink if possible, otherwise try a hard link
 632                 ${symbolic_link} ${srcdir}/${file} ${link} 2>/dev/null || ${hard_link} ${srcdir}/${file} ${link}
 633
 634                 if [ ! -r ${link} ] ; then
 635                         echo '***' "${progname}: unable to link \"${link}\" to \"${srcdir}/${file}\"." 1>&2
 636                         exit 1
 637                 fi
 638
 639                 echo "Linked \"${link}\" to \"${srcdir}/${file}\"."
 640         done
 641
 642         # Create a .gdbinit file which runs the one in srcdir
 643         # and tells GDB to look there for source files.
 644
 645         if [ -r ${srcdir}/${subdir}/.gdbinit ] ; then
 646                 case ${srcdir} in
 647                 .) ;;
 648                 *) cat > ${subdir}/.gdbinit <<EOF
 649 # ${NO_EDIT}
 650 dir .
 651 dir ${makesrcdir}
 652 source ${makesrcdir}/.gdbinit
 653 EOF
 654                         ;;
 655                 esac
 656         fi
 657
 658         # Install a makefile, and make it set VPATH
 659         # if necessary so that the sources are found.
 660         # Also change its value of srcdir.
 661         # NOTE: Makefile generation constitutes the majority of the time in configure.  Hence, this section has
 662         # been somewhat optimized and is perhaps a bit twisty.
 663
 664         # code is order so as to try to sed the smallest input files we know.
 665
 666         # the four makefile fragments MUST end up in the resulting Makefile in this order:
 667         # package, target, host, and site.  so do these separately because I don't trust the
 668         #  order of sed -e expressions.
 669
 670         if [ -f ${srcdir}/${subdir}/${Makefile_in} ] ; then
 671
 672             # Conditionalize for this site from "Makefile.in" (or whatever it's called) into Makefile.tem
 673             rm -f ${subdir}/Makefile.tem
 674               case "${site}" in
 675               "") cp ${srcdir}/${subdir}/${Makefile_in} ${subdir}/Makefile.tem ;;
 676               *)
 677                       site_makefile_frag=${srcdir}/config/ms-${site}
 678
 679                       if [ -f ${site_makefile_frag} ] ; then
 680                               sed -e "/^####/  r ${site_makefile_frag}" ${srcdir}/${subdir}/${Makefile_in} \
 681                                       > ${subdir}/Makefile.tem
 682                       else
 683                               cp ${srcdir}/${subdir}/${Makefile_in} ${subdir}/Makefile.tem
 684                               site_makefile_frag=
 685                       fi
 686                       ;;
 687             esac
 688             # working copy now in ${subdir}/Makefile.tem
 689
 690             # Conditionalize the makefile for this host.
 691             rm -f ${Makefile}
 692             case "${host_makefile_frag}" in
 693               "") mv ${subdir}/Makefile.tem ${Makefile} ;;
 694               *)
 695                       if [ ! -f ${host_makefile_frag} ] ; then
 696                               host_makefile_frag=${srcdir}/${host_makefile_frag}
 697                       fi
 698                       if [ -f ${host_makefile_frag} ] ; then
 699                               sed -e "/^####/  r ${host_makefile_frag}" ${subdir}/Makefile.tem > ${Makefile}
 700                       else
 701                               echo '***' Expected host makefile fragment \"${host_makefile_frag}\" 1>&2
 702                               echo '***' is missing in ${PWD=`pwd`}. 1>&2
 703                               mv ${subdir}/Makefile.tem ${Makefile}
 704                       fi
 705             esac
 706             # working copy now in ${Makefile}
 707
 708             # Conditionalize the makefile for this target.
 709             rm -f ${subdir}/Makefile.tem
 710             case "${target_makefile_frag}" in
 711               "") mv ${Makefile} ${subdir}/Makefile.tem ;;
 712               *)
 713                       if [ ! -f ${target_makefile_frag} ] ; then
 714                               target_makefile_frag=${srcdir}/${target_makefile_frag}
 715                       fi
 716                       if [ -f ${target_makefile_frag} ] ; then
 717                               sed -e "/^####/  r ${target_makefile_frag}" ${Makefile} > ${subdir}/Makefile.tem
 718                       else
 719                               mv ${Makefile} ${subdir}/Makefile.tem
 720                               target_makefile_frag=
 721                       fi
 722                       ;;
 723             esac
 724             # real copy now in ${subdir}/Makefile.tem
 725
 726             # Conditionalize the makefile for this package.
 727             rm -f ${Makefile}
 728             case "${package_makefile_frag}" in
 729               "") mv ${subdir}/Makefile.tem ${Makefile} ;;
 730               *)
 731                       if [ ! -f ${package_makefile_frag} ] ; then
 732                               package_makefile_frag=${srcdir}/${package_makefile_frag}
 733                       fi
 734                       if [ -f ${package_makefile_frag} ] ; then
 735                               sed -e "/^####/  r ${package_makefile_frag}" ${subdir}/Makefile.tem > ${Makefile}
 736                       else
 737                               echo '***' Expected package makefile fragment \"${package_makefile_frag}\" 1>&2
 738                               echo '***' is missing in ${PWD=`pwd`}. 1>&2
 739                               mv ${subdir}/Makefile.tem ${Makefile}
 740                       fi
 741             esac
 742             # working copy now in ${Makefile}
 743
 744             mv ${Makefile} ${subdir}/Makefile.tem
 745
 746             # real copy now in ${subdir}/Makefile.tem
 747
 748             # prepend warning about editting, and a bunch of variables.
 749             rm -f ${Makefile}
 750             cat > ${Makefile} <<EOF
 751 # ${NO_EDIT}
 752 VPATH = ${makesrcdir}
 753 links = ${configlinks}
 754 host_alias = ${host_alias}
 755 host_cpu = ${host_cpu}
 756 host_vendor = ${host_vendor}
 757 host_os = ${host_os}
 758 host_canonical = ${host_cpu}-${host_vendor}-${host_os}
 759 target_alias = ${target_alias}
 760 target_cpu = ${target_cpu}
 761 target_vendor = ${target_vendor}
 762 target_os = ${target_os}
 763 target_canonical = ${target_cpu}-${target_vendor}-${target_os}
 764 EOF
 765             case "${build}" in
 766               "") ;;
 767               *)  cat >> ${Makefile} << EOF
 768 build_alias = ${build_alias}
 769 build_cpu = ${build_cpu}
 770 build_vendor = ${build_vendor}
 771 build_os = ${build_os}
 772 build_canonical = ${build_cpu}-${build_vendor}-${build_os}
 773 EOF
 774             esac
 775
 776             case "${package_makefile_frag}" in
 777               "") ;;
 778               /*) echo package_makefile_frag = ${package_makefile_frag} >>${Makefile} ;;
 779               *)  echo package_makefile_frag = ${invsubdir}${package_makefile_frag} >>${Makefile} ;;
 780             esac
 781
 782             case "${target_makefile_frag}" in
 783               "") ;;
 784               /*) echo target_makefile_frag = ${target_makefile_frag} >>${Makefile} ;;
 785               *)  echo target_makefile_frag = ${invsubdir}${target_makefile_frag} >>${Makefile} ;;
 786             esac
 787
 788             case "${host_makefile_frag}" in
 789               "") ;;
 790               /*) echo host_makefile_frag = ${host_makefile_frag} >>${Makefile} ;;
 791               *)  echo host_makefile_frag = ${invsubdir}${host_makefile_frag} >>${Makefile} ;;
 792             esac
 793
 794             if [ "${site_makefile_frag}" != "" ] ; then
 795                 echo site_makefile_frag = ${invsubdir}${site_makefile_frag} >>${Makefile}
 796             fi
 797
 798             # make sure that some sort of reasonable default exists for these
 799             # two variables
 800             CXX=${CXX-"g++ -O"}
 801             CC=${CC-cc}
 802
 803             # reset prefix, exec_prefix, srcdir, SUBDIRS, NONSUBDIRS,
 804             # remove any form feeds.
 805             if [ -z "${subdirs}" ]; then
 806                 rm -f ${subdir}/Makefile.tem2
 807                 sed -e "s:^SUBDIRS[     ]*=.*$:SUBDIRS = ${configdirs}:" \
 808                     -e "s:^NONSUBDIRS[  ]*=.*$:NONSUBDIRS = ${noconfigdirs}:" \
 809                     ${subdir}/Makefile.tem > ${subdir}/Makefile.tem2
 810                 rm -f ${subdir}/Makefile.tem
 811                 mv ${subdir}/Makefile.tem2 ${subdir}/Makefile.tem
 812             fi
 813             sed -e "s:^prefix[  ]*=.*$:prefix = ${prefix}:" \
 814                     -e "s:^exec_prefix[         ]*=.*$:exec_prefix = ${exec_prefix}:" \
 815                     -e "s:^SHELL[        ]*=.*$:SHELL = ${config_shell}:" \
 816                     -e "s:^srcdir[      ]*=.*$:srcdir = ${makesrcdir}:" \
 817                     -e "s/\f//" \
 818                     -e "s:^program_prefix[      ]*=.*$:program_prefix = ${program_prefix}:" \
 819                     -e "s:^program_suffix[      ]*=.*$:program_suffix = ${program_suffix}:" \
 820                     -e "s:^program_transform_name[      ]*=.*$:program_transform_name = ${program_transform_name}:" \
 821                     -e "s:^tooldir[     ]*=.*$:tooldir = ${tooldir}:" \
 822                     ${subdir}/Makefile.tem >> ${Makefile}
 823             # final copy now in ${Makefile}
 824
 825         else
 826            echo "No Makefile.in found in ${srcdir}/${subdir}, unable to configure" 1>&2
 827         fi
 828
 829         rm -f ${subdir}/Makefile.tem
 830
 831         case "${host_makefile_frag}" in
 832         "") using= ;;
 833         *) using="and \"${host_makefile_frag}\"" ;;
 834         esac
 835
 836         case "${target_makefile_frag}" in
 837         "") ;;
 838         *) using="${using} and \"${target_makefile_frag}\"" ;;
 839         esac
 840
 841         case "${site_makefile_frag}" in
 842         "") ;;
 843         *) using="${using} and \"${site_makefile_frag}\"" ;;
 844         esac
 845
 846         newusing=`echo "${using}" | sed 's/and/using/'`
 847         using=${newusing}
 848         echo "Created \"${Makefile}\" in" ${PWD=`pwd`} ${using}
 849
 850         . ${tmpfile}.pos
 851
 852         # describe the chosen configuration in config.status.
 853         # Make that file a shellscript which will reestablish
 854         # the same configuration.  Used in Makefiles to rebuild
 855         # Makefiles.
 856
 857         case "${norecursion}" in
 858         "") arguments="${arguments} --norecursion" ;;
 859         *) ;;
 860         esac
 861
 862         if [ ${subdir} = . ] ; then
 863             echo "#!/bin/sh
 864 # ${NO_EDIT}
 865 # This directory was configured as follows:
 866 ${progname}" ${arguments}  "
 867 # ${using}" > ${subdir}/config.new
 868         else
 869             echo "#!/bin/sh
 870 # ${NO_EDIT}
 871 # This directory was configured as follows:
 872 cd ${invsubdir}
 873 ${progname}" ${arguments}  "
 874 # ${using}" > ${subdir}/config.new
 875         fi
 876         chmod a+x ${subdir}/config.new
 877         if [ -r ${subdir}/config.back ] ; then
 878                 mv -f ${subdir}/config.back ${subdir}/config.status
 879         fi
 880         ${moveifchange} ${subdir}/config.new ${subdir}/config.status
 881         ;;
 882
 883     *)  rm -f ${Makefile} ${subdir}/config.status ${links} ;;
 884     esac
 885 done
 886
 887 # If there are subdirectories, then recur.
 888 if [ -z "${norecursion}" -a -n "${configdirs}" ] ; then
 889         for configdir in ${configdirs} ; do
 890
 891                 if [ -d ${srcdir}/${configdir} ] ; then
 892                         eval echo Configuring ${configdir}... ${redirect}
 893                         case "${srcdir}" in
 894                         ".") ;;
 895                         *)
 896                                 if [ ! -d ./${configdir} ] ; then
 897                                         if mkdir ./${configdir} ; then
 898                                                 true
 899                                         else
 900                                                 echo '***' "${progname}: could not make ${PWD=`pwd`}/${configdir}" 1>&2
 901                                                 exit 1
 902                                         fi
 903                                 fi
 904                                 ;;
 905                         esac
 906
 907                         POPDIR=${PWD=`pwd`}
 908                         cd ${configdir}
 909
 910 ### figure out what to do with srcdir
 911                         case "${srcdir}" in
 912                         ".") newsrcdir=${srcdir} ;; # no -srcdir option.  We're building in place.
 913                         /*) # absolute path
 914                                 newsrcdir=${srcdir}/${configdir}
 915                                 srcdiroption="--srcdir=${newsrcdir}"
 916                                 ;;
 917                         *) # otherwise relative
 918                                 newsrcdir=../${srcdir}/${configdir}
 919                                 srcdiroption="--srcdir=${newsrcdir}"
 920                                 ;;
 921                         esac
 922
 923 ### check for guested configure, otherwise fix possibly relative progname
 924                         if [ -f ${newsrcdir}/configure ] ; then
 925                                 recprog=${newsrcdir}/configure
 926                         elif [ -f ${newsrcdir}/configure.in ] ; then
 927                                 case "${progname}" in
 928                                 /*)     recprog=${progname} ;;
 929                                 *)      recprog=../${progname} ;;
 930                                 esac
 931                         else
 932                                 eval echo No configuration information in ${configdir} ${redirect}
 933                                 recprog=
 934                         fi
 935
 936 ### The recursion line is here.
 937                         if [ ! -z "${recprog}" ] ; then
 938                                 if eval ${config_shell} ${recprog} ${verbose} ${buildopt} --host=${host_alias} --target=${target_alias} \
 939                                         ${prefixoption} ${tmpdiroption} ${exec_prefixoption} \
 940                                         ${srcdiroption} ${program_prefixoption} ${program_suffixoption} ${program_transform_nameoption} ${site_option} ${withoptions} ${withoutoptions} ${enableoptions} ${disableoptions} ${removing} ${other_options} ${redirect} ; then
 941                                         true
 942                                 else
 943                                         echo Configure in `pwd` failed, exiting. 1>&2
 944                                         exit 1
 945                                 fi
 946                         fi
 947
 948                         cd ${POPDIR}
 949                 fi
 950         done
 951 fi
 952
 953 exit 0
 954
 955 #
 956 # Local Variables:
 957 # fill-column: 131
 958 # End:
 959 #
 960
 961 # end of configure