make-config.sh

   1 #!/bin/sh
   2 set -e
   3
   4 # The make-config.sh script uses information about the target machine
   5 # to set things up for compilation. It's vaguely like a stripped-down
   6 # version of autoconf. It's intended to be run as part of make.sh. The
   7 # only time you'd want to run it by itself is if you're trying to
   8 # cross-compile the system or if you're doing some kind of
   9 # troubleshooting.
  10
  11 # This software is part of the SBCL system. See the README file for
  12 # more information.
  13 #
  14 # This software is derived from the CMU CL system, which was
  15 # written at Carnegie Mellon University and released into the
  16 # public domain. The software is in the public domain and is
  17 # provided with absolutely no warranty. See the COPYING and CREDITS
  18 # files for more information.
  19
  20 print_help="no"
  21
  22 # The classic form here was to use --userinit $DEVNULL --sysinit
  23 # $DEVNULL, but that doesn't work on Win32 because SBCL doesn't handle
  24 # device names properly. We still need $DEVNULL to be NUL on Win32
  25 # because it's used elsewhere (such as canonicalize-whitespace), so we
  26 # need an alternate solution for the init file overrides. --no-foos
  27 # have now been available long enough that this should not stop anyone
  28 # from building.
  29 if [ "$OSTYPE" = "cygwin" -o "$OSTYPE" = "msys" ]
  30 then
  31     SBCL_PREFIX="$PROGRAMFILES/sbcl"
  32 else
  33     SBCL_PREFIX="/usr/local"
  34 fi
  35 SBCL_XC_HOST="sbcl --disable-debugger --no-userinit --no-sysinit"
  36 export SBCL_XC_HOST
  37
  38 # Parse command-line options.
  39 bad_option() {
  40     echo $1
  41     echo "Enter \"$0 --help\" for list of valid options."
  42     exit 1
  43 }
  44
  45 WITH_FEATURES=""
  46 WITHOUT_FEATURES=""
  47
  48 fancy=false
  49 some_options=false
  50 for option
  51 do
  52   optarg_ok=true
  53   # Split --foo=bar into --foo and bar.
  54   case $option in
  55       *=*)
  56         # For ease of scripting skip valued options with empty
  57         # values.
  58         optarg=`expr "X$option" : '[^=]*=\(.*\)'` || optarg_ok=false
  59         option=`expr "X$option" : 'X\([^=]*=\).*'`
  60         ;;
  61       --with*)
  62         optarg=`expr "X$option" : 'X--[^-]*-\(.*\)'` \
  63             || bad_option "Malformed feature toggle: $option"
  64         option=`expr "X$option" : 'X\(--[^-]*\).*'`
  65         ;;
  66       *)
  67         optarg=""
  68         ;;
  69   esac
  70
  71   case $option in
  72       --help | -help | -h)
  73         print_help="yes" ;;
  74       --prefix=)
  75         $optarg_ok && SBCL_PREFIX=$optarg
  76         ;;
  77       --arch=)
  78         $oparg_ok && SBCL_ARCH=$optarg
  79         ;;
  80       --xc-host=)
  81         $optarg_ok && SBCL_XC_HOST=$optarg
  82         ;;
  83       --dynamic-space-size=)
  84         $optarg_ok && SBCL_DYNAMIC_SPACE_SIZE=$optarg
  85         ;;
  86       --with)
  87         WITH_FEATURES="$WITH_FEATURES :$optarg"
  88         ;;
  89       --without)
  90         WITHOUT_FEATURES="$WITHOUT_FEATURES :$optarg"
  91         ;;
  92       --fancy)
  93         WITH_FEATURES="$WITH_FEATURES :sb-core-compression :sb-xref-for-internals :sb-after-xc-core"
  94         # Lower down we add :sb-thread for platforms where it can be built.
  95         fancy=true
  96         ;;
  97       -*)
  98         bad_option "Unknown command-line option to $0: \"$option\""
  99         ;;
 100       *)
 101         if $some_options
 102         then
 103             bad_option "Unknown command-line option to $0: \"$option\""
 104         else
 105             legacy_xc_spec=$option
 106         fi
 107         ;;
 108   esac
 109   some_options=true
 110 done
 111
 112 if (test -f customize-target-features.lisp && \
 113     (test -n "$WITH_FEATURES" || test -n "$WITHOUT_FEATURES"))
 114 then
 115     # Actually there's no reason why it would not work, but it would
 116     # be confusing to say --with-thread only to have it turned off by
 117     # customize-target-features.lisp...
 118     echo "ERROR: Both customize-target-features.lisp, and feature-options"
 119     echo "to make.sh present -- cannot use both at the same time."
 120     exit 1
 121 fi
 122
 123 # Previously XC host was provided as a positional argument.
 124 if test -n "$legacy_xc_spec"
 125 then
 126     SBCL_XC_HOST="$legacy_xc_spec"
 127 fi
 128
 129 if test "$print_help" = "yes"
 130 then
 131   cat <<EOF
 132 \`make.sh' drives the SBCL build.
 133
 134 Usage: $0 [OPTION]...
 135
 136   Important: make.sh does not currently control the entirety of the
 137   build: configuration file customize-target-features.lisp and certain
 138   environment variables play a role as well. see file INSTALL for
 139   details.
 140
 141 Options:
 142   -h, --help           Display this help and exit.
 143
 144   --prefix=<path>      Specify the install location.
 145
 146       Script install.sh installs SBCL under the specified prefix
 147       path: runtime as prefix/bin/sbcl, additional files under
 148       prefix/lib/sbcl, and documentation under prefix/share.
 149
 150       This option also affects the binaries: built-in default for
 151       SBCL_HOME is: prefix/lib/sbcl/
 152
 153       Default prefix is: /usr/local
 154
 155   --dynamic-space-size=<size> Default dynamic-space size for target.
 156
 157       This specifies the default dynamic-space size for the SBCL
 158       being built. If you need to control the dynamic-space size
 159       of the host SBCL, use the --xc-host option.
 160
 161       If not provided, the default is platform-specific. <size> is
 162       taken to be megabytes unless explicitly suffixed with Gb in
 163       order to specify the size in gigabytes.
 164
 165   --with-<feature>     Build with specified feature.
 166   --without-<feature>  Build wihout the specfied feature.
 167
 168   --arch=<string>      Specify the architecture to build for.
 169
 170       Mainly for doing x86 builds on x86-64.
 171
 172   --xc-host=<string>   Specify the Common Lisp compilation host.
 173
 174       The string provided should be a command to invoke the
 175       cross-compilation Lisp system in such a way, that it reads
 176       commands from standard input, and terminates when it reaches end
 177       of file on standard input.
 178
 179       Examples:
 180
 181        "sbcl --disable-debugger --no-sysinit --no-userinit"
 182                   Use an existing SBCL binary as a cross-compilation
 183                   host even though you have stuff in your
 184                   initialization files which makes it behave in such a
 185                   non-standard way that it keeps the build from
 186                   working. Also disable the debugger instead of
 187                   waiting endlessly for a programmer to help it out
 188                   with input on *DEBUG-IO*. (This is the default.)
 189
 190        "sbcl"
 191                   Use an existing SBCL binary as a cross-compilation
 192                   host, including your initialization files and
 193                   building with the debugger enabled. Not recommended
 194                   for casual users.
 195
 196        "lisp -noinit -batch"
 197                   Use an existing CMU CL binary as a cross-compilation
 198                   host when you have weird things in your .cmucl-init
 199                   file.
 200 EOF
 201   exit 1
 202 fi
 203
 204 mkdir -p output
 205 # Save prefix for make and install.sh.
 206 echo "SBCL_PREFIX='$SBCL_PREFIX'" > output/prefix.def
 207 echo "$SBCL_DYNAMIC_SPACE_SIZE" > output/dynamic-space-size.txt
 208
 209 # FIXME: Tweak this script, and the rest of the system, to support
 210 # a second bootstrapping pass in which the cross-compilation host is
 211 # known to be SBCL itself, so that the cross-compiler can do some
 212 # optimizations (especially specializable arrays) that it doesn't
 213 # know how to implement how in a portable way. (Or maybe that wouldn't
 214 # require a second pass, just testing at build-the-cross-compiler time
 215 # whether the cross-compilation host returns suitable values from
 216 # UPGRADED-ARRAY-ELEMENT-TYPE?)
 217
 218 if [ "$OSTYPE" = "cygwin" -o "$OSTYPE" = "msys" ] ; then
 219     DEVNULL=NUL
 220 else
 221     DEVNULL=/dev/null
 222 fi
 223 export DEVNULL
 224
 225 . ./find-gnumake.sh
 226 find_gnumake
 227
 228 . ./generate-version.sh
 229 generate_version
 230
 231 # Now that we've done our option parsing and found various
 232 # dependencies, write them out to a file to be sourced by other
 233 # scripts.
 234
 235 echo "DEVNULL=\"$DEVNULL\"; export DEVNULL" > output/build-config
 236 echo "GNUMAKE=\"$GNUMAKE\"; export GNUMAKE" >> output/build-config
 237 echo "SBCL_XC_HOST=\"$SBCL_XC_HOST\"; export SBCL_XC_HOST" >> output/build-config
 238 echo "legacy_xc_spec=\"$legacy_xc_spec\"; export legacy_xc_spec" >> output/build-config
 239
 240 # And now, sorting out the per-target dependencies...
 241
 242 case `uname` in
 243     Linux)
 244         sbcl_os="linux"
 245         ;;
 246     OSF1)
 247         # it's changed name twice since it was called OSF/1: clearly
 248         # the marketers forgot to tell the engineers about Digital Unix
 249         # _or_ OSF/1 ...
 250         sbcl_os="osf1"
 251         ;;
 252     *BSD)
 253         case `uname` in
 254             FreeBSD)
 255                 sbcl_os="freebsd"
 256                 ;;
 257             OpenBSD)
 258                 sbcl_os="openbsd"
 259                 ;;
 260             NetBSD)
 261                 sbcl_os="netbsd"
 262                 ;;
 263             *)
 264                 echo unsupported BSD variant: `uname`
 265                 exit 1
 266                 ;;
 267         esac
 268         ;;
 269     Darwin)
 270         sbcl_os="darwin"
 271         ;;
 272     SunOS)
 273         sbcl_os="sunos"
 274         ;;
 275     CYGWIN* | WindowsNT | MINGW*)
 276         sbcl_os="win32"
 277         ;;
 278     HP-UX)
 279         sbcl_os="hpux"
 280         ;;
 281     *)
 282         echo unsupported OS type: `uname`
 283         exit 1
 284         ;;
 285 esac
 286
 287 link_or_copy() {
 288    if [ "$sbcl_os" = "win32" ] ; then
 289        cp -r "$1" "$2"
 290    else
 291        ln -s "$1" "$2"
 292    fi
 293 }
 294
 295 remove_dir_safely() {
 296    if [ "$sbcl_os" = "win32" ] ; then
 297         if [ -d "$1" ] ; then
 298             rm -rf "$1"
 299         elif [ -e "$1" ] ; then
 300             echo "I'm afraid to remove non-directory $1."
 301             exit 1
 302         fi
 303     else
 304         if [ -h "$1" ] ; then
 305             rm "$1"
 306         elif [ -w "$1" ] ; then
 307             echo "I'm afraid to replace non-symlink $1 with a symlink."
 308             exit 1
 309         fi
 310     fi
 311 }
 312
 313 echo //entering make-config.sh
 314
 315 echo //ensuring the existence of output/ directory
 316 if [ ! -d output ] ; then mkdir output; fi
 317
 318 echo //guessing default target CPU architecture from host architecture
 319 case `uname -m` in
 320     *86) guessed_sbcl_arch=x86 ;;
 321     i86pc) guessed_sbcl_arch=x86 ;;
 322     *x86_64) guessed_sbcl_arch=x86-64 ;;
 323     amd64) guessed_sbcl_arch=x86-64 ;;
 324     [Aa]lpha) guessed_sbcl_arch=alpha ;;
 325     sparc*) guessed_sbcl_arch=sparc ;;
 326     sun*) guessed_sbcl_arch=sparc ;;
 327     *ppc) guessed_sbcl_arch=ppc ;;
 328     ppc64) guessed_sbcl_arch=ppc ;;
 329     Power*Macintosh) guessed_sbcl_arch=ppc ;;
 330     parisc) guessed_sbcl_arch=hppa ;;
 331     9000/800) guessed_sbcl_arch=hppa ;;
 332     mips*) guessed_sbcl_arch=mips ;;
 333     *)
 334         # If we're not building on a supported target architecture, we
 335         # we have no guess, but it's not an error yet, since maybe
 336         # target architecture will be specified explicitly below.
 337         guessed_sbcl_arch=''
 338         ;;
 339 esac
 340
 341 # Under Solaris, uname -m returns "i86pc" even if CPU is amd64.
 342 if [ "$sbcl_os" = "sunos" ] && [ `isainfo -k` = "amd64" ]; then
 343     guessed_sbcl_arch=x86-64
 344 fi
 345
 346 # Under Darwin, uname -m returns "i386" even if CPU is x86_64.
 347 if [ "$sbcl_os" = "darwin" ] && [ "`/usr/sbin/sysctl -n hw.optional.x86_64`" = "1" ]; then
 348     guessed_sbcl_arch=x86-64
 349 fi
 350
 351 echo //setting up CPU-architecture-dependent information
 352 if test -n "$SBCL_ARCH"
 353 then
 354     # Normalize it.
 355     SBCL_ARCH=`echo $SBCL_ARCH | tr '[A-Z]' '[a-z]' | tr _ -`
 356 fi
 357 sbcl_arch=${SBCL_ARCH:-$guessed_sbcl_arch}
 358 echo sbcl_arch=\"$sbcl_arch\"
 359 if [ "$sbcl_arch" = "" ] ; then
 360     echo "can't guess target SBCL architecture, please specify --arch=<name>"
 361     exit 1
 362 fi
 363 if $fancy
 364 then
 365     # If --fancy, enable threads on platforms where they can be built.
 366     case $sbcl_arch in
 367         x86|x86-64|ppc)
 368             WITH_FEATURES="$WITH_FEATURES :sb-thread"
 369             echo "Enabling threads due to --fancy."
 370             ;;
 371         *)
 372             echo "No threads on this platform."
 373             ;;
 374     esac
 375 fi
 376
 377 ltf=`pwd`/local-target-features.lisp-expr
 378 echo //initializing $ltf
 379 echo ';;;; This is a machine-generated file.' > $ltf
 380 echo ';;;; Please do not edit it by hand.' >> $ltf
 381 echo ';;;; See make-config.sh.' >> $ltf
 382 echo "((lambda (features) (set-difference features (list$WITHOUT_FEATURES)))" >> $ltf
 383 printf " (union (list$WITH_FEATURES) (list " >> $ltf
 384
 385 printf ":%s" "$sbcl_arch" >> $ltf
 386
 387 echo //setting up OS-dependent information
 388 # Under Darwin x86-64, guess whether Darwin 9+ or below.
 389 if [ "$sbcl_os" = "darwin" ] && [ "$sbcl_arch" = "x86-64" ]; then
 390     darwin_version=`uname -r`
 391     darwin_version_major=${DARWIN_VERSION_MAJOR:-${darwin_version%%.*}}
 392     if (( 8 < $darwin_version_major )); then
 393         printf ' :inode64 :darwin9-or-better' >> $ltf
 394     fi
 395 fi
 396
 397 original_dir=`pwd`
 398 cd ./src/runtime/
 399 rm -f Config target-arch-os.h target-arch.h target-os.h target-lispregs.h
 400 # KLUDGE: these two logically belong in the previous section
 401 # ("architecture-dependent"); it seems silly to enforce this in terms
 402 # of the shell script, though. -- CSR, 2002-02-03
 403 link_or_copy $sbcl_arch-arch.h target-arch.h
 404 link_or_copy $sbcl_arch-lispregs.h target-lispregs.h
 405 case "$sbcl_os" in
 406     linux)
 407         printf ' :unix' >> $ltf
 408         printf ' :elf' >> $ltf
 409         printf ' :linux' >> $ltf
 410
 411         # If you add other platforms here, don't forget to edit
 412         # src/runtime/Config.foo-linux too.
 413         case "$sbcl_arch" in
 414             mips)
 415                 printf ' :largefile' >> $ltf
 416                 ;;
 417             x86 | x86-64)
 418                 printf ' :sb-thread :sb-futex :largefile' >> $ltf
 419                 ;;
 420             ppc)
 421                 printf ' :sb-futex' >> $ltf
 422                 ;;
 423         esac
 424
 425         if [ $sbcl_arch = "x86-64" ]; then
 426             link_or_copy Config.x86_64-linux Config
 427         else
 428             link_or_copy Config.$sbcl_arch-linux Config
 429         fi
 430         link_or_copy $sbcl_arch-linux-os.h target-arch-os.h
 431         link_or_copy linux-os.h target-os.h
 432         ;;
 433     osf1)
 434         printf ' :unix' >> $ltf
 435         printf ' :elf' >> $ltf
 436         printf ' :osf1' >> $ltf
 437         link_or_copy Config.$sbcl_arch-osf1 Config
 438         link_or_copy $sbcl_arch-osf1-os.h target-arch-os.h
 439         link_or_copy osf1-os.h target-os.h
 440         ;;
 441     hpux)
 442         printf ' :unix' >> $ltf
 443         printf ' :elf' >> $ltf
 444         printf ' :hpux' >> $ltf
 445         link_or_copy Config.$sbcl_arch-hpux Config
 446         link_or_copy $sbcl_arch-hpux-os.h target-arch-os.h
 447         link_or_copy hpux-os.h target-os.h
 448         ;;
 449     *bsd)
 450         printf ' :unix' >> $ltf
 451         printf ' :bsd' >> $ltf
 452         link_or_copy $sbcl_arch-bsd-os.h target-arch-os.h
 453         link_or_copy bsd-os.h target-os.h
 454         case "$sbcl_os" in
 455             freebsd)
 456                 printf ' :elf' >> $ltf
 457                 printf ' :freebsd' >> $ltf
 458                 printf ' :gcc-tls' >> $ltf
 459                 if [ $sbcl_arch = "x86" ]; then
 460                     printf ' :restore-tls-segment-register-from-context' >> $ltf
 461                 fi
 462                 link_or_copy Config.$sbcl_arch-freebsd Config
 463                 ;;
 464             openbsd)
 465                 printf ' :elf' >> $ltf
 466                 printf ' :openbsd' >> $ltf
 467                 link_or_copy Config.$sbcl_arch-openbsd Config
 468                 ;;
 469             netbsd)
 470                 printf ' :netbsd' >> $ltf
 471                 printf ' :elf' >> $ltf
 472                 link_or_copy Config.$sbcl_arch-netbsd Config
 473                 ;;
 474             *)
 475                 echo unsupported BSD variant: `uname`
 476                 exit 1
 477                 ;;
 478         esac
 479         ;;
 480     darwin)
 481         printf ' :unix' >> $ltf
 482         printf ' :mach-o' >> $ltf
 483         printf ' :bsd' >> $ltf
 484         printf ' :darwin' >> $ltf
 485         if [ $sbcl_arch = "x86" ]; then
 486             printf ' :mach-exception-handler :restore-fs-segment-register-from-tls :ud2-breakpoints' >> $ltf
 487         fi
 488         if [ $sbcl_arch = "x86-64" ]; then
 489             printf ' :mach-exception-handler :ud2-breakpoints' >> $ltf
 490         fi
 491         link_or_copy $sbcl_arch-darwin-os.h target-arch-os.h
 492         link_or_copy bsd-os.h target-os.h
 493         link_or_copy Config.$sbcl_arch-darwin Config
 494         ;;
 495     sunos)
 496         printf ' :unix' >> $ltf
 497         printf ' :elf' >> $ltf
 498         printf ' :sunos' >> $ltf
 499         if [ $sbcl_arch = "x86-64" ]; then
 500             printf ' :largefile' >> $ltf
 501         fi
 502         link_or_copy Config.$sbcl_arch-sunos Config
 503         link_or_copy $sbcl_arch-sunos-os.h target-arch-os.h
 504         link_or_copy sunos-os.h target-os.h
 505         ;;
 506     win32)
 507         printf ' :win32' >> $ltf
 508         link_or_copy Config.$sbcl_arch-win32 Config
 509         link_or_copy $sbcl_arch-win32-os.h target-arch-os.h
 510         link_or_copy win32-os.h target-os.h
 511         ;;
 512     *)
 513         echo unsupported OS type: `uname`
 514         exit 1
 515         ;;
 516 esac
 517 cd "$original_dir"
 518
 519 # FIXME: Things like :c-stack-grows-..., etc, should be
 520 # *derived-target-features* or equivalent, so that there was a nicer
 521 # way to specify them then sprinkling them in this file. They should
 522 # still be tweakable by advanced users, though, but probably not
 523 # appear in *features* of target. #!+/- should be adjusted to take
 524 # them in account as well. At minimum the nicer specification stuff,
 525 # though:
 526 #
 527 # (define-feature :dlopen (features)
 528 #   (union '(:bsd :linux :darwin :sunos) features))
 529 #
 530 # (define-feature :c-stack-grows-downwards-not-upwards (features)
 531 #   (member :x86 features))
 532
 533 # KLUDGE: currently the x86 only works with the generational garbage
 534 # collector (indicated by the presence of :GENCGC in *FEATURES*) and
 535 # alpha, sparc and ppc with the stop'n'copy collector (indicated by
 536 # the absence of :GENCGC in *FEATURES*). This isn't a great
 537 # separation, but for now, rather than have :GENCGC in
 538 # base-target-features.lisp-expr, we add it into local-target-features
 539 # if we're building for x86. -- CSR, 2002-02-21 Then we do something
 540 # similar with :STACK-GROWS-FOOWARD, too. -- WHN 2002-03-03
 541 if [ "$sbcl_arch" = "x86" ]; then
 542     printf ' :gencgc :stack-grows-downward-not-upward :c-stack-is-control-stack' >> $ltf
 543     printf ' :compare-and-swap-vops :unwind-to-frame-and-call-vop :raw-instance-init-vops' >> $ltf
 544     printf ' :stack-allocatable-closures :stack-allocatable-vectors' >> $ltf
 545     printf ' :stack-allocatable-lists :stack-allocatable-fixed-objects' >> $ltf
 546     printf ' :alien-callbacks :cycle-counter :inline-constants ' >> $ltf
 547     printf ' :memory-barrier-vops :multiply-high-vops' >> $ltf
 548     case "$sbcl_os" in
 549     linux | freebsd | netbsd | openbsd | sunos | darwin | win32)
 550         printf ' :linkage-table' >> $ltf
 551     esac
 552     if [ "$sbcl_os" = "win32" ]; then
 553         # of course it doesn't provide dlopen, but there is
 554         # roughly-equivalent magic nevertheless.
 555         printf ' :os-provides-dlopen' >> $ltf
 556     fi
 557     if [ "$sbcl_os" = "openbsd" ]; then
 558         rm -f src/runtime/openbsd-sigcontext.h
 559         sh tools-for-build/openbsd-sigcontext.sh > src/runtime/openbsd-sigcontext.h
 560     fi
 561 elif [ "$sbcl_arch" = "x86-64" ]; then
 562     printf ' :gencgc :stack-grows-downward-not-upward :c-stack-is-control-stack :linkage-table' >> $ltf
 563     printf ' :compare-and-swap-vops :unwind-to-frame-and-call-vop :raw-instance-init-vops' >> $ltf
 564     printf ' :stack-allocatable-closures :stack-allocatable-vectors' >> $ltf
 565     printf ' :stack-allocatable-lists :stack-allocatable-fixed-objects' >> $ltf
 566     printf ' :alien-callbacks :cycle-counter :complex-float-vops' >> $ltf
 567     printf ' :float-eql-vops :inline-constants :memory-barrier-vops' >> $ltf
 568     printf ' :multiply-high-vops' >> $ltf
 569 elif [ "$sbcl_arch" = "mips" ]; then
 570     printf ' :linkage-table' >> $ltf
 571     printf ' :stack-allocatable-closures :stack-allocatable-vectors' >> $ltf
 572     printf ' :stack-allocatable-lists :stack-allocatable-fixed-objects' >> $ltf
 573     printf ' :alien-callbacks' >> $ltf
 574     # Use a little C program to try to guess the endianness.  Ware
 575     # cross-compilers!
 576     #
 577     # FIXME: integrate to grovel-features, mayhaps
 578     $GNUMAKE -C tools-for-build determine-endianness -I ../src/runtime
 579     tools-for-build/determine-endianness >> $ltf
 580 elif [ "$sbcl_arch" = "ppc" ]; then
 581     printf ' :gencgc :stack-allocatable-closures :stack-allocatable-lists' >> $ltf
 582     printf ' :linkage-table :raw-instance-init-vops :memory-barrier-vops' >> $ltf
 583     printf ' :compare-and-swap-vops :multiply-high-vops' >> $ltf
 584     if [ "$sbcl_os" = "linux" ]; then
 585         # Use a C program to detect which kind of glibc we're building on,
 586         # to bandage across the break in source compatibility between
 587         # versions 2.3.1 and 2.3.2
 588         #
 589         # FIXME: integrate to grovel-features, mayhaps
 590         $GNUMAKE -C tools-for-build where-is-mcontext -I ../src/runtime
 591         tools-for-build/where-is-mcontext > src/runtime/ppc-linux-mcontext.h || (echo "error running where-is-mcontext"; exit 1)
 592     elif [ "$sbcl_os" = "darwin" ]; then
 593         # We provide a dlopen shim, so a little lie won't hurt
 594         printf " :os-provides-dlopen :alien-callbacks" >> $ltf
 595         # The default stack ulimit under darwin is too small to run PURIFY.
 596         # Best we can do is complain and exit at this stage
 597         if [ "`ulimit -s`" = "512" ]; then
 598             echo "Your stack size limit is too small to build SBCL."
 599             echo "See the limit(1) or ulimit(1) commands and the README file."
 600             exit 1
 601         fi
 602     fi
 603 elif [ "$sbcl_arch" = "sparc" ]; then
 604     # Test the compiler in order to see if we are building on Sun
 605     # toolchain as opposed to GNU binutils, and write the appropriate
 606     # FUNCDEF macro for assembler. No harm in running this on sparc-linux
 607     # as well.
 608     sh tools-for-build/sparc-funcdef.sh > src/runtime/sparc-funcdef.h
 609     if [ "$sbcl_os" = "sunos" ] || [ "$sbcl_os" = "linux" ]; then
 610         printf ' :linkage-table' >> $ltf
 611     fi
 612     printf ' :stack-allocatable-closures :stack-allocatable-lists' >> $ltf
 613 elif [ "$sbcl_arch" = "alpha" ]; then
 614     printf ' :stack-allocatable-closures :stack-allocatable-lists' >> $ltf
 615 elif [ "$sbcl_arch" = "hppa" ]; then
 616     printf ' :stack-allocatable-vectors :stack-allocatable-fixed-objects' >> $ltf
 617     printf ' :stack-allocatable-lists' >> $ltf
 618 else
 619     # Nothing need be done in this case, but sh syntax wants a placeholder.
 620     echo > /dev/null
 621 fi
 622
 623 export sbcl_os sbcl_arch
 624 sh tools-for-build/grovel-features.sh >> $ltf
 625
 626 echo //finishing $ltf
 627 echo ')))' >> $ltf
 628
 629 # FIXME: The version system should probably be redone along these lines:
 630 #
 631 # echo //setting up version information.
 632 # versionfile=version.txt
 633 # cp base-version.txt $versionfile
 634 # echo " (built `date -u` by `whoami`@`hostname`)" >> $versionfile
 635 # echo 'This is a machine-generated file and should not be edited by hand.' >> $versionfile
 636
 637 # Make a unique ID for this build (to discourage people from
 638 # mismatching sbcl and *.core files).
 639 if [ `uname` = "SunOS" ] ; then
 640   # use /usr/xpg4/bin/id instead of /usr/bin/id
 641   PATH=/usr/xpg4/bin:$PATH
 642 fi
 643 echo '"'`hostname`-`id -un`-`date +%Y-%m-%d-%H-%M-%S`'"' > output/build-id.tmp