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#!/bin/sh
set -e
# The make-config.sh script uses information about the target machine
# to set things up for compilation. It's vaguely like a stripped-down
# version of autoconf. It's intended to be run as part of make.sh. The
# only time you'd want to run it by itself is if you're trying to
# cross-compile the system or if you're doing some kind of
# troubleshooting.
# This software is part of the SBCL system. See the README file for
# more information.
#
# This software is derived from the CMU CL system, which was
# written at Carnegie Mellon University and released into the
# public domain. The software is in the public domain and is
# provided with absolutely no warranty. See the COPYING and CREDITS
# files for more information.
print_help="no"
# The classic form here was to use --userinit $DEVNULL --sysinit
# $DEVNULL, but that doesn't work on Win32 because SBCL doesn't handle
# device names properly. We still need $DEVNULL to be NUL on Win32
# because it's used elsewhere (such as canonicalize-whitespace), so we
# need an alternate solution for the init file overrides. --no-foos
# have now been available long enough that this should not stop anyone
# from building.
if [ "$OSTYPE" = "cygwin" -o "$OSTYPE" = "msys" ]
then
SBCL_PREFIX="$PROGRAMFILES/sbcl"
else
SBCL_PREFIX="/usr/local"
fi
SBCL_XC_HOST="sbcl --disable-debugger --no-userinit --no-sysinit"
export SBCL_XC_HOST
# Parse command-line options.
bad_option() {
echo $1
echo "Enter \"$0 --help\" for list of valid options."
exit 1
}
WITH_FEATURES=""
WITHOUT_FEATURES=""
FANCY_FEATURES=":sb-core-compression :sb-xref-for-internals :sb-after-xc-core"
fancy=false
some_options=false
for option
do
optarg_ok=true
# Split --foo=bar into --foo and bar.
case $option in
*=*)
# For ease of scripting skip valued options with empty
# values.
optarg=`expr "X$option" : '[^=]*=\(.*\)'` || optarg_ok=false
option=`expr "X$option" : 'X\([^=]*=\).*'`
;;
--with*)
optarg=`expr "X$option" : 'X--[^-]*-\(.*\)'` \
|| bad_option "Malformed feature toggle: $option"
option=`expr "X$option" : 'X\(--[^-]*\).*'`
;;
*)
optarg=""
;;
esac
case $option in
--help | -help | -h)
print_help="yes" ;;
--prefix=)
$optarg_ok && SBCL_PREFIX=$optarg
;;
--arch=)
$oparg_ok && SBCL_ARCH=$optarg
;;
--xc-host=)
$optarg_ok && SBCL_XC_HOST=$optarg
;;
--dynamic-space-size=)
$optarg_ok && SBCL_DYNAMIC_SPACE_SIZE=$optarg
;;
--with)
WITH_FEATURES="$WITH_FEATURES :$optarg"
;;
--without)
WITHOUT_FEATURES="$WITHOUT_FEATURES :$optarg"
;;
--fancy)
WITH_FEATURES="$WITH_FEATURES $FANCY_FEATURES"
# Lower down we add :sb-thread for platforms where it can be built.
fancy=true
;;
-*)
bad_option "Unknown command-line option to $0: \"$option\""
;;
*)
if $some_options
then
bad_option "Unknown command-line option to $0: \"$option\""
else
legacy_xc_spec=$option
fi
;;
esac
some_options=true
done
if (test -f customize-target-features.lisp && \
(test -n "$WITH_FEATURES" || test -n "$WITHOUT_FEATURES"))
then
# Actually there's no reason why it would not work, but it would
# be confusing to say --with-thread only to have it turned off by
# customize-target-features.lisp...
echo "ERROR: Both customize-target-features.lisp, and feature-options"
echo "to make.sh present -- cannot use both at the same time."
exit 1
fi
# Previously XC host was provided as a positional argument.
if test -n "$legacy_xc_spec"
then
SBCL_XC_HOST="$legacy_xc_spec"
fi
if test "$print_help" = "yes"
then
cat <<EOF
\`make.sh' drives the SBCL build.
Usage: $0 [OPTION]...
Important: make.sh does not currently control the entirety of the
build: configuration file customize-target-features.lisp and certain
environment variables play a role as well. see file INSTALL for
details.
Options:
-h, --help Display this help and exit.
--prefix=<path> Specify the install location.
Script install.sh installs SBCL under the specified prefix
path: runtime as prefix/bin/sbcl, additional files under
prefix/lib/sbcl, and documentation under prefix/share.
This option also affects the binaries: built-in default for
SBCL_HOME is: prefix/lib/sbcl/
Default prefix is: /usr/local
--dynamic-space-size=<size> Default dynamic-space size for target.
This specifies the default dynamic-space size for the SBCL
being built. If you need to control the dynamic-space size
of the host SBCL, use the --xc-host option.
If not provided, the default is platform-specific. <size> is
taken to be megabytes unless explicitly suffixed with Gb in
order to specify the size in gigabytes.
--with-<feature> Build with specified feature.
--without-<feature> Build wihout the specfied feature.
--fancy Build with several optional features:
$FANCY_FEATURES
Plus threading on platforms which support it.
--arch=<string> Specify the architecture to build for.
Mainly for doing x86 builds on x86-64.
--xc-host=<string> Specify the Common Lisp compilation host.
The string provided should be a command to invoke the
cross-compilation Lisp system in such a way, that it reads
commands from standard input, and terminates when it reaches end
of file on standard input.
Examples:
"sbcl --disable-debugger --no-sysinit --no-userinit"
Use an existing SBCL binary as a cross-compilation
host even though you have stuff in your
initialization files which makes it behave in such a
non-standard way that it keeps the build from
working. Also disable the debugger instead of
waiting endlessly for a programmer to help it out
with input on *DEBUG-IO*. (This is the default.)
"sbcl"
Use an existing SBCL binary as a cross-compilation
host, including your initialization files and
building with the debugger enabled. Not recommended
for casual users.
"lisp -noinit -batch"
Use an existing CMU CL binary as a cross-compilation
host when you have weird things in your .cmucl-init
file.
EOF
exit 1
fi
# Running make.sh with different options without clean.sh in the middle
# can break things.
sh clean.sh
mkdir -p output
# Save prefix for make and install.sh.
echo "SBCL_PREFIX='$SBCL_PREFIX'" > output/prefix.def
echo "$SBCL_DYNAMIC_SPACE_SIZE" > output/dynamic-space-size.txt
# FIXME: Tweak this script, and the rest of the system, to support
# a second bootstrapping pass in which the cross-compilation host is
# known to be SBCL itself, so that the cross-compiler can do some
# optimizations (especially specializable arrays) that it doesn't
# know how to implement how in a portable way. (Or maybe that wouldn't
# require a second pass, just testing at build-the-cross-compiler time
# whether the cross-compilation host returns suitable values from
# UPGRADED-ARRAY-ELEMENT-TYPE?)
if [ "$OSTYPE" = "cygwin" -o "$OSTYPE" = "msys" ] ; then
DEVNULL=NUL
else
DEVNULL=/dev/null
fi
export DEVNULL
. ./find-gnumake.sh
find_gnumake
. ./generate-version.sh
generate_version
# Now that we've done our option parsing and found various
# dependencies, write them out to a file to be sourced by other
# scripts.
echo "DEVNULL=\"$DEVNULL\"; export DEVNULL" > output/build-config
echo "GNUMAKE=\"$GNUMAKE\"; export GNUMAKE" >> output/build-config
echo "SBCL_XC_HOST=\"$SBCL_XC_HOST\"; export SBCL_XC_HOST" >> output/build-config
echo "legacy_xc_spec=\"$legacy_xc_spec\"; export legacy_xc_spec" >> output/build-config
# And now, sorting out the per-target dependencies...
case `uname` in
Linux)
sbcl_os="linux"
;;
OSF1)
# it's changed name twice since it was called OSF/1: clearly
# the marketers forgot to tell the engineers about Digital Unix
# _or_ OSF/1 ...
sbcl_os="osf1"
;;
*BSD)
case `uname` in
FreeBSD)
sbcl_os="freebsd"
;;
OpenBSD)
sbcl_os="openbsd"
;;
NetBSD)
sbcl_os="netbsd"
;;
*)
echo unsupported BSD variant: `uname`
exit 1
;;
esac
;;
Darwin)
sbcl_os="darwin"
;;
SunOS)
sbcl_os="sunos"
;;
CYGWIN* | WindowsNT | MINGW*)
sbcl_os="win32"
;;
HP-UX)
sbcl_os="hpux"
;;
*)
echo unsupported OS type: `uname`
exit 1
;;
esac
link_or_copy() {
if [ "$sbcl_os" = "win32" ] ; then
# Use preprocessor or makefile includes instead of copying if
# possible, to avoid unexpected use of the original, unchanged
# files when re-running only make-target-1 during development.
if echo "$1" | egrep '[.][ch]$'; then
echo "#include \"$1\"" >"$2"
elif echo "$1" | egrep '^Config[.]'; then
echo "include $1" >"$2"
else
cp -r "$1" "$2"
fi
else
ln -s "$1" "$2"
fi
}
remove_dir_safely() {
if [ "$sbcl_os" = "win32" ] ; then
if [ -d "$1" ] ; then
rm -rf "$1"
elif [ -e "$1" ] ; then
echo "I'm afraid to remove non-directory $1."
exit 1
fi
else
if [ -h "$1" ] ; then
rm "$1"
elif [ -w "$1" ] ; then
echo "I'm afraid to replace non-symlink $1 with a symlink."
exit 1
fi
fi
}
echo //entering make-config.sh
echo //ensuring the existence of output/ directory
if [ ! -d output ] ; then mkdir output; fi
echo //guessing default target CPU architecture from host architecture
case `uname -m` in
*86) guessed_sbcl_arch=x86 ;;
i86pc) guessed_sbcl_arch=x86 ;;
*x86_64) guessed_sbcl_arch=x86-64 ;;
amd64) guessed_sbcl_arch=x86-64 ;;
[Aa]lpha) guessed_sbcl_arch=alpha ;;
sparc*) guessed_sbcl_arch=sparc ;;
sun*) guessed_sbcl_arch=sparc ;;
*ppc) guessed_sbcl_arch=ppc ;;
ppc64) guessed_sbcl_arch=ppc ;;
Power*Macintosh) guessed_sbcl_arch=ppc ;;
parisc) guessed_sbcl_arch=hppa ;;
9000/800) guessed_sbcl_arch=hppa ;;
mips*) guessed_sbcl_arch=mips ;;
*)
# If we're not building on a supported target architecture, we
# we have no guess, but it's not an error yet, since maybe
# target architecture will be specified explicitly below.
guessed_sbcl_arch=''
;;
esac
# Under Solaris, uname -m returns "i86pc" even if CPU is amd64.
if [ "$sbcl_os" = "sunos" ] && [ `isainfo -k` = "amd64" ]; then
guessed_sbcl_arch=x86-64
fi
# Under Darwin, uname -m returns "i386" even if CPU is x86_64.
if [ "$sbcl_os" = "darwin" ] && [ "`/usr/sbin/sysctl -n hw.optional.x86_64`" = "1" ]; then
guessed_sbcl_arch=x86-64
fi
echo //setting up CPU-architecture-dependent information
if test -n "$SBCL_ARCH"
then
# Normalize it.
SBCL_ARCH=`echo $SBCL_ARCH | tr '[A-Z]' '[a-z]' | tr _ -`
fi
sbcl_arch=${SBCL_ARCH:-$guessed_sbcl_arch}
echo sbcl_arch=\"$sbcl_arch\"
if [ "$sbcl_arch" = "" ] ; then
echo "can't guess target SBCL architecture, please specify --arch=<name>"
exit 1
fi
if $fancy
then
# If --fancy, enable threads on platforms where they can be built.
case $sbcl_arch in
x86|x86-64|ppc)
if [ "$sbcl_os" = "sunos" ] && [ "$sbcl_arch" = "x86-64" ]
then
echo "No threads on this platform."
else
WITH_FEATURES="$WITH_FEATURES :sb-thread"
echo "Enabling threads due to --fancy."
fi
;;
*)
echo "No threads on this platform."
;;
esac
fi
ltf=`pwd`/local-target-features.lisp-expr
echo //initializing $ltf
echo ';;;; This is a machine-generated file.' > $ltf
echo ';;;; Please do not edit it by hand.' >> $ltf
echo ';;;; See make-config.sh.' >> $ltf
echo "((lambda (features) (set-difference features (list$WITHOUT_FEATURES)))" >> $ltf
printf " (union (list$WITH_FEATURES) (list " >> $ltf
printf ":%s" "$sbcl_arch" >> $ltf
echo //setting up OS-dependent information
# Under Darwin x86-64, guess whether Darwin 9+ or below.
if [ "$sbcl_os" = "darwin" ] && [ "$sbcl_arch" = "x86-64" ]; then
darwin_version=`uname -r`
darwin_version_major=${DARWIN_VERSION_MAJOR:-${darwin_version%%.*}}
if (( 8 < $darwin_version_major )); then
printf ' :inode64 :darwin9-or-better' >> $ltf
fi
fi
original_dir=`pwd`
cd ./src/runtime/
rm -f Config target-arch-os.h target-arch.h target-os.h target-lispregs.h
# KLUDGE: these two logically belong in the previous section
# ("architecture-dependent"); it seems silly to enforce this in terms
# of the shell script, though. -- CSR, 2002-02-03
link_or_copy $sbcl_arch-arch.h target-arch.h
link_or_copy $sbcl_arch-lispregs.h target-lispregs.h
case "$sbcl_os" in
linux)
printf ' :unix' >> $ltf
printf ' :elf' >> $ltf
printf ' :linux' >> $ltf
# If you add other platforms here, don't forget to edit
# src/runtime/Config.foo-linux too.
case "$sbcl_arch" in
mips)
printf ' :largefile' >> $ltf
;;
x86 | x86-64)
printf ' :sb-thread :sb-futex :largefile' >> $ltf
;;
ppc)
printf ' :sb-futex' >> $ltf
;;
esac
if [ $sbcl_arch = "x86-64" ]; then
link_or_copy Config.x86_64-linux Config
else
link_or_copy Config.$sbcl_arch-linux Config
fi
link_or_copy $sbcl_arch-linux-os.h target-arch-os.h
link_or_copy linux-os.h target-os.h
;;
osf1)
printf ' :unix' >> $ltf
printf ' :elf' >> $ltf
printf ' :osf1' >> $ltf
link_or_copy Config.$sbcl_arch-osf1 Config
link_or_copy $sbcl_arch-osf1-os.h target-arch-os.h
link_or_copy osf1-os.h target-os.h
;;
hpux)
printf ' :unix' >> $ltf
printf ' :elf' >> $ltf
printf ' :hpux' >> $ltf
link_or_copy Config.$sbcl_arch-hpux Config
link_or_copy $sbcl_arch-hpux-os.h target-arch-os.h
link_or_copy hpux-os.h target-os.h
;;
*bsd)
printf ' :unix' >> $ltf
printf ' :bsd' >> $ltf
link_or_copy $sbcl_arch-bsd-os.h target-arch-os.h
link_or_copy bsd-os.h target-os.h
case "$sbcl_os" in
freebsd)
printf ' :elf' >> $ltf
printf ' :freebsd' >> $ltf
printf ' :gcc-tls' >> $ltf
if [ $sbcl_arch = "x86" ]; then
printf ' :restore-fs-segment-register-from-tls' >> $ltf
fi
link_or_copy Config.$sbcl_arch-freebsd Config
;;
openbsd)
printf ' :elf' >> $ltf
printf ' :openbsd' >> $ltf
link_or_copy Config.$sbcl_arch-openbsd Config
;;
netbsd)
printf ' :netbsd' >> $ltf
printf ' :elf' >> $ltf
link_or_copy Config.$sbcl_arch-netbsd Config
;;
*)
echo unsupported BSD variant: `uname`
exit 1
;;
esac
;;
darwin)
printf ' :unix' >> $ltf
printf ' :mach-o' >> $ltf
printf ' :bsd' >> $ltf
printf ' :darwin' >> $ltf
if [ $sbcl_arch = "x86" ]; then
printf ' :mach-exception-handler :restore-fs-segment-register-from-tls :ud2-breakpoints' >> $ltf
fi
if [ $sbcl_arch = "x86-64" ]; then
printf ' :mach-exception-handler :ud2-breakpoints' >> $ltf
fi
link_or_copy $sbcl_arch-darwin-os.h target-arch-os.h
link_or_copy bsd-os.h target-os.h
link_or_copy Config.$sbcl_arch-darwin Config
;;
sunos)
printf ' :unix' >> $ltf
printf ' :elf' >> $ltf
printf ' :sunos' >> $ltf
if [ $sbcl_arch = "x86-64" ]; then
printf ' :largefile' >> $ltf
fi
link_or_copy Config.$sbcl_arch-sunos Config
link_or_copy $sbcl_arch-sunos-os.h target-arch-os.h
link_or_copy sunos-os.h target-os.h
;;
win32)
printf ' :win32' >> $ltf
#
# Optional features -- We enable them by default, but the build
# ought to work perfectly without them:
#
printf ' :sb-futex' >> $ltf
printf ' :sb-qshow' >> $ltf
#
# Required features -- Some of these used to be optional, but
# building without them is no longer considered supported:
#
# (Of course it doesn't provide dlopen, but there is
# roughly-equivalent magic nevertheless:)
printf ' :sb-dynamic-core :os-provides-dlopen' >> $ltf
printf ' :sb-thread :sb-safepoint :sb-thruption :sb-wtimer' >> $ltf
printf ' :sb-safepoint-strictly' >> $ltf
#
link_or_copy Config.$sbcl_arch-win32 Config
link_or_copy $sbcl_arch-win32-os.h target-arch-os.h
link_or_copy win32-os.h target-os.h
;;
*)
echo unsupported OS type: `uname`
exit 1
;;
esac
cd "$original_dir"
# FIXME: Things like :c-stack-grows-..., etc, should be
# *derived-target-features* or equivalent, so that there was a nicer
# way to specify them then sprinkling them in this file. They should
# still be tweakable by advanced users, though, but probably not
# appear in *features* of target. #!+/- should be adjusted to take
# them in account as well. At minimum the nicer specification stuff,
# though:
#
# (define-feature :dlopen (features)
# (union '(:bsd :linux :darwin :sunos) features))
#
# (define-feature :c-stack-grows-downwards-not-upwards (features)
# (member :x86 features))
# KLUDGE: currently the x86 only works with the generational garbage
# collector (indicated by the presence of :GENCGC in *FEATURES*) and
# alpha, sparc and ppc with the stop'n'copy collector (indicated by
# the absence of :GENCGC in *FEATURES*). This isn't a great
# separation, but for now, rather than have :GENCGC in
# base-target-features.lisp-expr, we add it into local-target-features
# if we're building for x86. -- CSR, 2002-02-21 Then we do something
# similar with :STACK-GROWS-FOOWARD, too. -- WHN 2002-03-03
if [ "$sbcl_arch" = "x86" ]; then
printf ' :gencgc :stack-grows-downward-not-upward :c-stack-is-control-stack' >> $ltf
printf ' :compare-and-swap-vops :unwind-to-frame-and-call-vop :raw-instance-init-vops' >> $ltf
printf ' :stack-allocatable-closures :stack-allocatable-vectors' >> $ltf
printf ' :stack-allocatable-lists :stack-allocatable-fixed-objects' >> $ltf
printf ' :alien-callbacks :cycle-counter :inline-constants ' >> $ltf
printf ' :memory-barrier-vops :multiply-high-vops :ash-right-vops' >> $ltf
case "$sbcl_os" in
linux | freebsd | netbsd | openbsd | sunos | darwin | win32)
printf ' :linkage-table' >> $ltf
esac
if [ "$sbcl_os" = "win32" ]; then
# of course it doesn't provide dlopen, but there is
# roughly-equivalent magic nevertheless.
printf ' :os-provides-dlopen' >> $ltf
fi
if [ "$sbcl_os" = "openbsd" ]; then
rm -f src/runtime/openbsd-sigcontext.h
sh tools-for-build/openbsd-sigcontext.sh > src/runtime/openbsd-sigcontext.h
fi
elif [ "$sbcl_arch" = "x86-64" ]; then
printf ' :gencgc :stack-grows-downward-not-upward :c-stack-is-control-stack :linkage-table' >> $ltf
printf ' :compare-and-swap-vops :unwind-to-frame-and-call-vop :raw-instance-init-vops' >> $ltf
printf ' :stack-allocatable-closures :stack-allocatable-vectors' >> $ltf
printf ' :stack-allocatable-lists :stack-allocatable-fixed-objects' >> $ltf
printf ' :alien-callbacks :cycle-counter :complex-float-vops' >> $ltf
printf ' :float-eql-vops :inline-constants :memory-barrier-vops' >> $ltf
printf ' :multiply-high-vops :sb-simd-pack :ash-right-vops' >> $ltf
elif [ "$sbcl_arch" = "mips" ]; then
printf ' :cheneygc :linkage-table' >> $ltf
printf ' :stack-allocatable-closures :stack-allocatable-vectors' >> $ltf
printf ' :stack-allocatable-lists :stack-allocatable-fixed-objects' >> $ltf
printf ' :alien-callbacks' >> $ltf
elif [ "$sbcl_arch" = "ppc" ]; then
printf ' :gencgc :stack-allocatable-closures :stack-allocatable-vectors' >> $ltf
printf ' :stack-allocatable-lists :stack-allocatable-fixed-objects' >> $ltf
printf ' :linkage-table :raw-instance-init-vops :memory-barrier-vops' >> $ltf
printf ' :compare-and-swap-vops :multiply-high-vops' >> $ltf
if [ "$sbcl_os" = "linux" ]; then
# Use a C program to detect which kind of glibc we're building on,
# to bandage across the break in source compatibility between
# versions 2.3.1 and 2.3.2
#
# FIXME: integrate to grovel-features, mayhaps
$GNUMAKE -C tools-for-build where-is-mcontext -I ../src/runtime
tools-for-build/where-is-mcontext > src/runtime/ppc-linux-mcontext.h || (echo "error running where-is-mcontext"; exit 1)
elif [ "$sbcl_os" = "darwin" ]; then
# We provide a dlopen shim, so a little lie won't hurt
printf " :os-provides-dlopen :alien-callbacks" >> $ltf
# The default stack ulimit under darwin is too small to run PURIFY.
# Best we can do is complain and exit at this stage
if [ "`ulimit -s`" = "512" ]; then
echo "Your stack size limit is too small to build SBCL."
echo "See the limit(1) or ulimit(1) commands and the README file."
exit 1
fi
fi
elif [ "$sbcl_arch" = "sparc" ]; then
# Test the compiler in order to see if we are building on Sun
# toolchain as opposed to GNU binutils, and write the appropriate
# FUNCDEF macro for assembler. No harm in running this on sparc-linux
# as well.
sh tools-for-build/sparc-funcdef.sh > src/runtime/sparc-funcdef.h
if [ "$sbcl_os" = "sunos" ] || [ "$sbcl_os" = "linux" ]; then
printf ' :gencgc' >> $ltf
else
echo '***'
echo '*** You are running SPARC on non-SunOS, non-Linux. Since'
echo '*** GENCGC is untested on this combination, make-config.sh'
echo '*** is falling back to CHENEYGC. Please consider adjusting'
echo '*** parms.lisp to build with GENCGC instead.'
echo '***'
printf ' :cheneygc' >> $ltf
fi
if [ "$sbcl_os" = "sunos" ] || [ "$sbcl_os" = "linux" ]; then
printf ' :linkage-table' >> $ltf
fi
printf ' :stack-allocatable-closures :stack-allocatable-lists' >> $ltf
elif [ "$sbcl_arch" = "alpha" ]; then
printf ' :cheneygc' >> $ltf
printf ' :stack-allocatable-closures :stack-allocatable-lists' >> $ltf
elif [ "$sbcl_arch" = "hppa" ]; then
printf ' :cheneygc' >> $ltf
printf ' :stack-allocatable-vectors :stack-allocatable-fixed-objects' >> $ltf
printf ' :stack-allocatable-lists' >> $ltf
else
# Nothing need be done in this case, but sh syntax wants a placeholder.
echo > /dev/null
fi
# Use a little C program to try to guess the endianness. Ware
# cross-compilers!
#
# FIXME: integrate to grovel-features, mayhaps
$GNUMAKE -C tools-for-build determine-endianness -I ../src/runtime
tools-for-build/determine-endianness >> $ltf
export sbcl_os sbcl_arch
sh tools-for-build/grovel-features.sh >> $ltf
echo //finishing $ltf
echo ')))' >> $ltf
# FIXME: The version system should probably be redone along these lines:
#
# echo //setting up version information.
# versionfile=version.txt
# cp base-version.txt $versionfile
# echo " (built `date -u` by `whoami`@`hostname`)" >> $versionfile
# echo 'This is a machine-generated file and should not be edited by hand.' >> $versionfile
# Make a unique ID for this build (to discourage people from
# mismatching sbcl and *.core files).
if [ `uname` = "SunOS" ] ; then
# use /usr/xpg4/bin/id instead of /usr/bin/id
PATH=/usr/xpg4/bin:$PATH
fi
echo '"'`hostname`-`id -un`-`date +%Y-%m-%d-%H-%M-%S`'"' > output/build-id.tmp