#!/bin/sh

# "bench", a shell script to benchmark Scheme implementations
#
# Please report any errors or extensions to the author:
#
#   Marc Feeley (feeley@iro.umontreal.ca)
#
# The following have contributed to this benchmark suite:
#
#   Harvey Stein (abel@netvision.net.il)

# -----------------------------------------------------------------------------

error ()
{
  echo $1
  echo '
Usage: bench [-r runs] [-c clean] [-i iterfile] [-s setting] [-o options] <scheme-systems> <benchmarks>

<scheme-systems> is the abbreviated name of one or more
language implementations to use, i.e.:

  gambit           for Gambit-C compiler.
  gambit-int       for Gambit-C interpreter.
  bigloo           for Bigloo compiler.
  bigloo-int       for Bigloo interpreter.
  chicken          for Chicken compiler.
  chicken-int      for Chicken interpreter.
  mzscheme         for MzScheme.
  scheme48         for Scheme48.
  larceny          for Larceny.
  awk              for AWK.
  cc               for '"cc"' C compiler.
  gcc              for '"gcc"' C compiler.
  java             for Java.
  all              for all of the above.
  all-interpreters for the above interpreters.
  all-compilers    for the above compilers.

<benchmarks> is the name of one or more benchmarks
to use, i.e.:

  all         for all the benchmarks
  fib         for the fib benchmark
  "fib boyer" for fib & boyer.

runs is the number of times to run each benchmark (default is 1).

clean is whether or not to clean out the build directory.
true = clean.  Useful for testing or inspection.

iterfile is the file which specifies the number of iterations in
each benchmark.  If not supplied, we use num-iters.scm for compilers
and num-iters-int.scm for interpreters.  For testing, you might
want to use one-iter.scm, which runs each test once.

setting is the benchmarking setting.  The possible values are:

  r5rs (default):
       - generic arithmetic operations
       - optional overflow detection on fixnum arithmetic
       - mutable bindings for the definitions in the benchmark
       - mutable predefined bindings (for +, car, ...)

  r6rs:
       - generic arithmetic operations
       - overflow detection on fixnum arithmetic (either produce a  
         bignum or signal an exception)
       - immutable bindings for the definitions in the benchmark
       - immutable predefined bindings (for +, car, ...)
       - safe execution (i.e. an exception must be signalled on errors)

  r6rs-unsafe:
       - like r6rs setting but errors are not checked, but
         fixnum arithmetic overflows are detected

  r6rs-fixflo:
       - arithmetic operations are specialized to fixnum or flonum
         arguments as appropriate and the fixnum operations may
         wrap on overflow
       - immutable bindings for the definitions in the benchmark
       - immutable predefined bindings (for +, car, ...)
       - safe execution (i.e. an exception must be signalled on errors)

  r6rs-fixflo-unsafe:
       - like r6rs-fixflo setting but errors are not checked'

  exit
}

# -----------------------------------------------------------------------------

GAMBIT_COMP=${GAMBIT_COMP:-"../../../gsc/gsc -:=../../.."}
GAMBIT_INT=${GAMBIT_INT:-"../../../gsi/gsi -:m10000,d-,=../../.."}

CPU_LIMIT=${CPU_LIMIT:-"300"}

ulimit -t $CPU_LIMIT

cleanup ()
{
  if [ "$clean" = "true" ] ; then
     # It's true that technically speaking, we should be in the build
     # directory when this fcn is called.  Thus, we should be able to
     # just do rm *.  However, that's kind of dangerous, so instead,
     # we delete files newer than the mark file that evaluate () makes.

     for x in * ; do
        if [ $x -nt clean_newer_than_me ] ; then
          rm -rf $x
        fi
     done
  fi
  rm clean_newer_than_me
}

evaluate ()
{
  echo > clean_newer_than_me
  sleep 1
  {
  echo
  echo Testing $1 under ${NAME}-${setting}
  echo Compiling...
  make_src_code $1
  $COMP $1
  i=0
  while [ "$i" -lt "$NB_RUNS" ]
  do
    echo Running...
    $EXEC $1
    i=`expr $i + 1`
  done
  cleanup
  } 2>&1 | tee -a ../../results.${NAME}-${setting}

}

make_src_code ()
{
  case "$extension" in
     ".awk")
       cat ../../src/$1.awk > $1.awk
       chmod +x $1.awk ;;
     ".c")
       cat ../../src/$1.c > $1.c ;;
     ".java")
       cat ../../src/$1.java > $1.java ;;
     ".scm")
       printf "$PREFIXCODE\n" "$1" "$1" > $1-prefix.scm
       printf "$SUFFIXCODE\n" "$1" "$1" > $1-suffix.scm
       cat $1-prefix.scm ../../prefix/prefix-${system}.scm | sed "s/;INSERTCODE/$INSERTCODE/" | cat - ../../num-iters/${iterfile} ../../src/$1.scm ../../suffix/suffix-${system}.scm $1-suffix.scm > $1.scm ;;
     ".ss")
       printf "$PREFIXCODE\n" "$1" "$1" > $1-prefix.scm
       printf "$SUFFIXCODE\n" "$1" "$1" > $1-suffix.scm
       cat ../../prefix/prefix-${system}.scm | sed "s/;INSERTCODE/$INSERTCODE/" | cat - ../../num-iters/${iterfile} ../../src/$1.scm ../../suffix/suffix-${system}.scm > $1-body.ss
       cat $1-prefix.scm $1-suffix.scm > $1.ss ;;
  esac
}

# -----------------------------------------------------------------------------
# For handling setting that does not exist for a given compiler

nonexistent_comp ()
{
  :
}

nonexistent_exec ()
{
  :
}

# -----------------------------------------------------------------------------
# Definitions specific to Gambit-C compiler

gambit_comp ()
{
  vers=`$GAMBIT_COMP -v | sed -e 's/ .*//g'`
  major="`echo \"$vers\" | sed -e \"s/v\\([0-9]*\\)\\.\\([0-9]*\\)\\.\\([0-9]*\\)\\(.*\\)/\\1/g\"`"
  minor="`echo \"$vers\" | sed -e \"s/v\\([0-9]*\\)\\.\\([0-9]*\\)\\.\\([0-9]*\\)\\(.*\\)/\\2/g\"`"
  revision="`echo \"$vers\" | sed -e \"s/v\\([0-9]*\\)\\.\\([0-9]*\\)\\.\\([0-9]*\\)\\(.*\\)/\\3/g\"`"
  version=$(( major * 100000 + minor * 1000 + revision ))

  rm -f $1.o* $1.exe

  if [ "$version" -lt "403000" ] ; then

    {
      echo $GAMBIT_COMP $COMPOPTS $1.scm
    } | /usr/bin/time sh

  else

    {
      echo $GAMBIT_COMP $COMPOPTS -exe -o $1.exe $1.scm
    } | /usr/bin/time sh
    strip $1.exe

  fi
}

gambit_exec ()
{
  if test -f ./$1.exe
  then

    if command -v perf
    then
      perf stat ./$1.exe -:m10000,d-,=../../..
    else
      /usr/bin/time ./$1.exe -:m10000,d-,=../../..
    fi

  else

    if command -v perf
    then
      perf stat $GAMBIT_INT ./$1.o1
    else
      /usr/bin/time $GAMBIT_INT ./$1.o1
    fi

  fi
}

gambit_int_comp ()
{
  :
}

gambit_int_exec ()
{
  printf "$REPLCOMMANDS" "$1" | $GAMBIT_INT
}

# -----------------------------------------------------------------------------
# Definitions specific to bigloo compiler

bigloo_comp ()
{
  case $1 in
     compiler|ctak|dynamic|fibc|maze|puzzle|scheme) usecc="-call/cc" ;;
     *) usecc="" ;;
  esac
  /usr/bin/time bigloo $usecc $COMPOPTS $1.scm -o $1
}

bigloo_exec ()
{
  if test -f ./$1
  then DYLD_LIBRARY_PATH=/Users/feeley/bigloo/lib/bigloo/3.0d GC_INITIAL_HEAP_SIZE=10240000 ./$1
  fi
}

bigloo_int_comp ()
{
  :
}

bigloo_int_exec ()
{
  printf "$REPLCOMMANDS" "$1" | GC_INITIAL_HEAP_SIZE=10240000 /usr/bin/time bigloo -heapsize 10
}

# -----------------------------------------------------------------------------
# Definitions specific to Chicken compiler

chicken_comp ()
{
  {
    echo csc $COMPOPTS $1.scm
  } | /usr/bin/time sh
}

chicken_exec ()
{
  if test -f ./$1
  then ./$1 -:hi10M -:hs0
  fi
}

chicken_int_comp ()
{
  :
}

chicken_int_exec ()
{
  printf "$REPLCOMMANDS" "$1" | /usr/bin/time csi -:hi10M -:hs0
}

# -----------------------------------------------------------------------------
# Definitions specific to MzScheme

mzscheme_comp ()
{
  :
}

mzscheme_exec ()
{
  printf "$REPLCOMMANDS" "$1" | mzscheme $COMPOPTS
}

# -----------------------------------------------------------------------------
# Definitions specific to Scheme48

scheme48_comp ()
{
  :
}

scheme48_exec ()
{
  printf "$REPLCOMMANDS" "$1" | scheme48 $COMPOPTS
}

# -----------------------------------------------------------------------------
# Definitions specific to Larceny

larceny_comp ()
{
  :
}

larceny_exec ()
{
  printf "$REPLCOMMANDS" "$1" | larceny $COMPOPTS
}

# -----------------------------------------------------------------------------
# Definitions specific to Chez Scheme

chez_comp ()
{
  :
}

chez_exec ()
{
  printf "$REPLCOMMANDS" "$1" | scheme
}

# -----------------------------------------------------------------------------
# Definitions specific to Petite Chez

petite_chez_comp ()
{
  :
}

petite_chez_exec ()
{
  printf "$REPLCOMMANDS" "$1" | /usr/bin/time petite
}

# -----------------------------------------------------------------------------
# Definitions specific to stalin

stalin_comp ()
{
  mv $1.scm $1.sc
  /usr/bin/time stalin -copt -O2 -Ob -Om -On -Or -Ot -s $1
}

stalin_exec ()
{
  if test -f ./$1
  then /usr/bin/time ./$1
  fi
}

# -----------------------------------------------------------------------------
# Definitions specific to scm

scm_comp ()
{
  :
}

scm_exec ()
{
  printf "$REPLCOMMANDS" "$1" | /usr/bin/time scm -f
}

# -----------------------------------------------------------------------------
# Definitions specific to STk

stk_comp ()
{
  :
}

stk_exec ()
{
  ### Need to send output to /dev/null so that it doesn't hang when there's
  ### an error...
  printf "$REPLCOMMANDS" "$1" | /usr/bin/time snow -f < /dev/null
}

# -----------------------------------------------------------------------------
# Definitions specific to AWK

awk_comp ()
{
  :
}

awk_exec ()
{
  /usr/bin/time ./$1.awk
}

# -----------------------------------------------------------------------------
# Definitions specific to CC

cc_comp ()
{
  {
     echo cc -O -o $1 $1.c -lm -lpthread
  } | /usr/bin/time sh
  ls -l $1
}

cc_exec ()
{
  if test -f ./$1
  then /usr/bin/time ./$1
  fi
}

# -----------------------------------------------------------------------------
# Definitions specific to GCC

gcc_comp ()
{
  {
     echo gcc -O3 -o $1 $1.c -lm -lpthread
  } | /usr/bin/time sh
  ls -l $1
}

gcc_exec ()
{
  if test -f ./$1
  then /usr/bin/time ./$1
  fi
}

# -----------------------------------------------------------------------------
# Definitions specific to Java

java_comp ()
{
  {
     echo javac $1.java
  } | /usr/bin/time sh
  ls -l $1.class
}

java_exec ()
{
  /usr/bin/time java $1
}

# -----------------------------------------------------------------------------

GABRIEL_BENCHMARKS="browse cpstak ctak dderiv deriv destruc diviter divrec puzzle takl trav1 trav2 triangl" # boyer fft tak

KVW_BENCHMARKS="ack array1 cat string sum1 sumloop tail wc"

C_BENCHMARKS="fft fib fibfp mbrot nucleic pnpoly sum sumfp tak tfib $KVW_BENCHMARKS"

OTHER_BENCHMARKS="conform dynamic earley fibc fftrad4 graphs lattice matrix maze mazefun nqueens paraffins peval pi primes ray scheme simplex slatex perm9 nboyer sboyer gcbench pi10K chud100K chud1K"

AWK_BENCHMARKS="$KVW_BENCHMARKS"

JAVA_BENCHMARKS="tfib"

ALL_BENCHMARKS="succeed fail crash $GABRIEL_BENCHMARKS $C_BENCHMARKS $OTHER_BENCHMARKS"

ALL_INTERPRETERS='bigloo-int petite-chez gambit-int chicken-int scm stk'
ALL_COMPILERS='gambit bigloo chicken mzscheme scheme48 larceny'
ALL_GAMBIT='gambit gambit-int'
ALL_NON_SCHEME='awk cc gcc java'
ALL_SYSTEMS="$ALL_COMPILERS $ALL_INTERPRETERS $ALL_NON_SCHEME"

## Arg processing...
if [ "$#" -lt 2 ]; then
  error '>>> At least two command line arguments are needed'
fi


cmdline="$0"
flagsdone=0

NB_RUNS=1
clean=true
setting=r5rs
options=""

while [ $# -gt 2 ] ; do
   arg="$1"
   shift
   case $arg in
      -r) NB_RUNS=$1    ; shift ;;
      -c) clean=$1      ; shift ;;
      -i) forceiters=$1 ; shift ;;
      -s) setting=$1    ; shift ;;
      -o) options=$1    ; shift ;;
       *) error ">>> Unknown argument of $arg given." ;;
   esac
done

if [ "$#" -ne 2 ]; then
  error '>>> Last two arguments must be <systems> and <benchmarks>'
fi

case "$1" in
               all) systems="$ALL_SYSTEMS" ;;
  all-interpreters) systems="$ALL_INTERPRETERS" ;;
     all-compilers) systems="$ALL_COMPILERS" ;;
        all-gambit) systems="$ALL_GAMBIT" ;;
                 *) systems="$1" ;;
esac

case "$2" in
      all) benchmarks="$ALL_BENCHMARKS" ;;
  gabriel) benchmarks="$GABRIEL_BENCHMARKS" ;;
      kvw) benchmarks="$KVW_BENCHMARKS" ;;
    other) benchmarks="$OTHER_BENCHMARKS" ;;
      awk) benchmarks="$AWK_BENCHMARKS" ;;
        c) benchmarks="$C_BENCHMARKS" ;;
     java) benchmarks="$JAVA_BENCHMARKS" ;;
        *) benchmarks="$2" ;;
esac

## Run each benchmark under each system...
for system in $systems ; do

   case "$system" in

    gambit) NAME='Gambit-C'
            COMP=gambit_comp
            EXEC=gambit_exec
            iterfile=num-iters.scm
            extension=".scm"
            case "$setting" in
              mostly-fixflo)
                COMPOPTS="-cc-options '$options'"
                INSERTCODE="(declare (mostly-fixnum-flonum))(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              mostly-flofix)
                COMPOPTS="-cc-options '$options'"
                INSERTCODE="(declare (mostly-flonum-fixnum))(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              mostly-fix)
                COMPOPTS="-cc-options '$options'"
                INSERTCODE="(declare (mostly-fixnum))(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              mostly-flo)
                COMPOPTS="-cc-options '$options'"
                INSERTCODE="(declare (mostly-flonum))(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              mostly-generic)
                COMPOPTS="-cc-options '$options'"
                INSERTCODE="(declare (mostly-generic))(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              sb-mostly-fixflo)
                COMPOPTS="-cc-options '$options'"
                INSERTCODE="(declare (standard-bindings) (mostly-fixnum-flonum))(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              sb-mostly-flofix)
                COMPOPTS="-cc-options '$options'"
                INSERTCODE="(declare (standard-bindings) (mostly-flonum-fixnum))(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              sb-mostly-fix)
                COMPOPTS="-cc-options '$options'"
                INSERTCODE="(declare (standard-bindings) (mostly-fixnum))(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              sb-mostly-flo)
                COMPOPTS="-cc-options '$options'"
                INSERTCODE="(declare (standard-bindings) (mostly-flonum))(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              sb-mostly-generic)
                COMPOPTS="-cc-options '$options'"
                INSERTCODE="(declare (standard-bindings) (mostly-generic))(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              r5rs)
                COMPOPTS="-cc-options '$options'"
                INSERTCODE="(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              r6rs)
                COMPOPTS="-cc-options '$options'"
                INSERTCODE="(declare (standard-bindings) (extended-bindings) (block))(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              r6rs-unsafe)
                COMPOPTS="-cc-options '$options'"
                INSERTCODE="(declare (standard-bindings) (extended-bindings) (block) (not safe))(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              r6rs-fixflo)
                COMPOPTS="-cc-options '$options'"
                INSERTCODE="(declare (standard-bindings) (extended-bindings) (block))(define-macro (if-fixflo yes no) yes)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              r6rs-fixflo-unsafe)
                COMPOPTS="-cc-options '$options'"
                INSERTCODE="(declare (standard-bindings) (extended-bindings) (block) (not safe))(define-macro (if-fixflo yes no) yes)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
            esac
            ;;

gambit-int) NAME='Gambit-C-int'
            COMP=gambit_int_comp
            COMPOPTS=""
            EXEC=gambit_int_exec
            iterfile=num-iters-int.scm
            extension=".scm"
            case "$setting" in
              r5rs)
                INSERTCODE="(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS="(load \"%s.scm\")"
                ;;
              r6rs)
                INSERTCODE="(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS="(load \"%s.scm\")"
                ;;
              r6rs-unsafe)
                INSERTCODE="(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS="(load \"%s.scm\")"
                ;;
              r6rs-fixflo)
                INSERTCODE="(define-macro (if-fixflo yes no) yes)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS="(load \"%s.scm\")"
                ;;
              r6rs-fixflo-unsafe)
                INSERTCODE="(define-macro (if-fixflo yes no) yes)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS="(load \"%s.scm\")"
                ;;
            esac
            ;;

    bigloo) NAME='Bigloo'
            COMP=bigloo_comp
            EXEC=bigloo_exec
            iterfile=num-iters.scm
            extension=".scm"
            case "$setting" in
              r5rs)
                COMPOPTS="-O6 -copt -O3 -copt -fomit-frame-pointer"
                INSERTCODE="(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                COMP=nonexistent_comp
                EXEC=nonexistent_exec
                ;;
              r6rs)
                COMPOPTS="-O6 -copt -O3 -copt -fomit-frame-pointer"
                INSERTCODE="(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              r6rs-unsafe)
                COMPOPTS="-Obench -copt -O3 -copt -fomit-frame-pointer"
                INSERTCODE="(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              r6rs-fixflo)
                COMPOPTS="-O6 -copt -O3 -copt -fomit-frame-pointer"
                INSERTCODE="(define-macro (if-fixflo yes no) yes)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              r6rs-fixflo-unsafe)
                COMPOPTS="-Obench -copt -O3 -copt -fomit-frame-pointer"
                INSERTCODE="(define-macro (if-fixflo yes no) yes)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
            esac
            ;;

bigloo-int) NAME='Bigloo-int'
            COMP=bigloo_int_comp
            COMPOPTS=""
            EXEC=bigloo_int_exec
            iterfile=num-iters-int.scm
            extension=".scm"
            INSERTCODE=""
            PREFIXCODE="; %s %s"
            SUFFIXCODE="; %s %s"
            REPLCOMMANDS="(load \"%s.scm\")"
            ;;

   chicken) NAME='Chicken'
            COMP=chicken_comp
            EXEC=chicken_exec
            iterfile=num-iters.scm
            extension=".scm"
            # Possible improvement: should -disable-interrupts be used?  What
            # is lost when -disable-interrupts is used?  Is that a normal
            # mode of execution?
            case "$setting" in
              r5rs)
                COMPOPTS="-w -d0 -no-trace -no-usual-integrations"
                INSERTCODE="(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              r6rs)
                COMPOPTS="-w -d0 -O3 -no-trace -block"
                INSERTCODE="(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              r6rs-unsafe)
                COMPOPTS="-w -d0 -O3 -no-trace -block -unsafe -unsafe-libraries"
                INSERTCODE="(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
              r6rs-fixflo)
                # It is impossible to use the fixnum/flonum specific
                # procedures in this setting because they are unsafe.
                COMPOPTS="-w -d0 -O3 -no-trace -block"
                INSERTCODE="(define-macro (if-fixflo yes no) no)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                COMP=nonexistent_comp
                EXEC=nonexistent_exec
                ;;
              r6rs-fixflo-unsafe)
                COMPOPTS="-w -d0 -O3 -no-trace -block -unsafe -unsafe-libraries"
                INSERTCODE="(define-macro (if-fixflo yes no) yes)"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=""
                ;;
            esac
            ;;

chicken-int) NAME='Chicken-int'
            COMP=chicken_int_comp
            COMPOPTS=""
            EXEC=chicken_int_exec
            iterfile=num-iters.scm
            extension=".scm"
            INSERTCODE=""
            PREFIXCODE="; %s %s"
            SUFFIXCODE="; %s %s"
            REPLCOMMANDS="(load \"%s.scm\")"
            ;;

  mzscheme) NAME='MzScheme'
            COMP=mzscheme_comp
            EXEC=mzscheme_exec
            iterfile=num-iters.scm
            extension=".ss"
            case "$setting" in
              r5rs)
                COMPOPTS="-q"
                INSERTCODE="(define-syntax if-fixflo (syntax-rules () ((if-fixflo yes no) no)))"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="(require (lib \"include.ss\")) (include \"%s-body.ss\") (main) ; %s"
                REPLCOMMANDS="(load \"%s.ss\")"
                ;;
              r6rs)
                COMPOPTS="-q"
                INSERTCODE="(define-syntax if-fixflo (syntax-rules () ((if-fixflo yes no) no)))"
                PREFIXCODE="(module %s mzscheme (define-syntax body-src \"%s-body.ss\")"
                SUFFIXCODE="(require (lib \"include.ss\")) (define-syntax (include-body stx) #\`(begin (include #,(syntax-local-value #'body-src)) (main))) (include-body)) ; %s %s"
                REPLCOMMANDS="(require \"%s.ss\")"
                ;;
              r6rs-unsafe)
                # MzScheme does not seem to have an unsafe mode.
                COMPOPTS="-q"
                INSERTCODE="(define-syntax if-fixflo (syntax-rules () ((if-fixflo yes no) no)))"
                PREFIXCODE="(module %s mzscheme (define-syntax body-src \"%s-body.ss\")"
                SUFFIXCODE="(require (lib \"include.ss\")) (define-syntax (include-body stx) #\`(begin (include #,(syntax-local-value #'body-src)) (main))) (include-body)) ; %s %s"
                REPLCOMMANDS="(require \"%s.ss\")"
                COMP=nonexistent_comp
                EXEC=nonexistent_exec
                ;;
              r6rs-fixflo)
                # MzScheme does not seem to have fixnum/flonum specific arithmetic operators.
                COMPOPTS="-q"
                INSERTCODE="(define-syntax if-fixflo (syntax-rules () ((if-fixflo yes no) no)))"
                PREFIXCODE="(module %s mzscheme (define-syntax body-src \"%s-body.ss\")"
                SUFFIXCODE="(require (lib \"include.ss\")) (define-syntax (include-body stx) #\`(begin (include #,(syntax-local-value #'body-src)) (main))) (include-body)) ; %s %s"
                REPLCOMMANDS="(require \"%s.ss\")"
                COMP=nonexistent_comp
                EXEC=nonexistent_exec
                ;;
              r6rs-fixflo-unsafe)
                # MzScheme does not seem to have fixnum/flonum specific arithmetic operators.
                # MzScheme does not seem to have an unsafe mode.
                COMPOPTS="-q"
                INSERTCODE="(define-syntax if-fixflo (syntax-rules () ((if-fixflo yes no) no)))"
                PREFIXCODE="(module %s mzscheme (define-syntax body-src \"%s-body.ss\")"
                SUFFIXCODE="(require (lib \"include.ss\")) (define-syntax (include-body stx) #\`(begin (include #,(syntax-local-value #'body-src)) (main))) (include-body)) ; %s %s"
                REPLCOMMANDS="(require \"%s.ss\")"
                COMP=nonexistent_comp
                EXEC=nonexistent_exec
                ;;
            esac
            ;;

  scheme48) NAME='Scheme48'
            COMP=scheme48_comp
            EXEC=scheme48_exec
            iterfile=num-iters.scm
            extension=".scm"
            case "$setting" in
              r5rs)
                COMPOPTS="-h 20000000"
                INSERTCODE="(define-syntax if-fixflo (syntax-rules () ((if-fixflo yes no) no)))"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=",bench off\n,open time posix bitwise ascii\n,load %s.scm\n,exit\n"
                ;;
              r6rs)
                COMPOPTS="-h 20000000"
                INSERTCODE="(define-syntax if-fixflo (syntax-rules () ((if-fixflo yes no) no)))"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=",bench on\n,open time posix bitwise ascii\n,load %s.scm\n,exit\n"
                ;;
              r6rs-unsafe)
                # Scheme48 does not seem to have an unsafe mode.
                COMPOPTS="-h 20000000"
                INSERTCODE="(define-syntax if-fixflo (syntax-rules () ((if-fixflo yes no) no)))"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=",bench on\n,open time posix bitwise ascii\n,load %s.scm\n,exit\n"
                COMP=nonexistent_comp
                EXEC=nonexistent_exec
                ;;
              r6rs-fixflo)
                # Scheme48 does not seem to have fixnum/flonum specific arithmetic operators.
                COMPOPTS="-h 20000000"
                INSERTCODE="(define-syntax if-fixflo (syntax-rules () ((if-fixflo yes no) no)))"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                REPLCOMMANDS=",bench on\n,open time posix bitwise ascii\n,load %s.scm\n,exit\n"
                COMP=nonexistent_comp
                EXEC=nonexistent_exec
                ;;
              r6rs-fixflo-unsafe)
                # Scheme48 does not seem to have fixnum/flonum specific arithmetic operators.
                # Scheme48 does not seem to have an unsafe mode.
                COMPOPTS="-h 20000000"
                PREFIXCODE="; %s %s"
                SUFFIXCODE="; %s %s"
                INSERTCODE="(define-syntax if-fixflo (syntax-rules () ((if-fixflo yes no) no)))"
                REPLCOMMANDS=",bench on\n,open time posix bitwise ascii\n,load %s.scm\n,exit\n"
                COMP=nonexistent_comp
                EXEC=nonexistent_exec
                ;;
            esac
            ;;

   larceny) NAME='Larceny'
            COMP=larceny_comp
            COMPOPTS=""
            EXEC=larceny_exec
            iterfile=num-iters.scm
            extension=".scm"
            INSERTCODE=""
            PREFIXCODE="; %s %s"
            SUFFIXCODE="; %s %s"
            REPLCOMMANDS="(load \"%s.scm\")"
            ;;

      chez) NAME='Chez-Scheme'
            COMP=chez_comp
            COMPOPTS=""
            EXEC=chez_exec
            iterfile=num-iters.scm
            extension=".scm"
            INSERTCODE=""
            PREFIXCODE="; %s %s"
            SUFFIXCODE="; %s %s"
            REPLCOMMANDS="(load \"%s.scm\")"
            ;;

petite-chez) NAME='Petite-Chez-Scheme'
             COMP=petite_chez_comp
             COMPOPTS=""
             EXEC=petite_chez_exec
             iterfile=num-iters-int.scm
             extension=".scm"
             INSERTCODE=""
             PREFIXCODE="; %s %s"
             SUFFIXCODE="; %s %s"
             REPLCOMMANDS="(load \"%s.scm\")"
             ;;

       mit) NAME='MIT-Scheme'
            COMP=mit_comp
            COMPOPTS=""
            EXEC=mit_exec
            iterfile=num-iters.scm
            extension=".scm"
            INSERTCODE=""
            PREFIXCODE="; %s %s"
            SUFFIXCODE="; %s %s"
            REPLCOMMANDS=""
            ;;

   mit-int) NAME='MIT-Scheme-int'
            COMP=mit_int_comp
            COMPOPTS=""
            EXEC=mit_int_exec
            iterfile=num-iters-int.scm
            extension=".scm"
            INSERTCODE=""
            PREFIXCODE="; %s %s"
            SUFFIXCODE="; %s %s"
            REPLCOMMANDS="(load \"%s.scm\")"
            ;;

       scm) NAME='SCM'
            COMP=scm_comp
            COMPOPTS=""
            EXEC=scm_exec
            iterfile=num-iters-int.scm
            extension=".scm"
            INSERTCODE=""
            PREFIXCODE="; %s %s"
            SUFFIXCODE="; %s %s"
            REPLCOMMANDS="(load \"%s.scm\")"
            ;;

    stalin) NAME='Stalin'
            COMP=stalin_comp
            COMPOPTS=""
            INSERTCODE=""
            EXEC=stalin_exec
            iterfile=num-iters.scm
            extension=".scm"
            INSERTCODE=""
            PREFIXCODE="; %s %s"
            SUFFIXCODE="; %s %s"
            REPLCOMMANDS=""
            ;;

       stk) NAME='STk'
            COMP=stk_comp
            COMPOPTS=""
            INSERTCODE=""
            EXEC=stk_exec
            iterfile=num-iters-int.scm
            extension=".scm"
            INSERTCODE=""
            PREFIXCODE="; %s %s"
            SUFFIXCODE="; %s %s"
            REPLCOMMANDS="(load \"%s.scm\")"
            ;;

       awk) NAME='AWK'
            COMP=awk_comp
            COMPOPTS=""
            INSERTCODE=""
            EXEC=awk_exec
            iterfile=
            extension=".awk"
            ;;

        cc) NAME='CC'
            COMP=cc_comp
            COMPOPTS=""
            INSERTCODE=""
            EXEC=cc_exec
            iterfile=
            extension=".c"
            ;;

       gcc) NAME='GCC'
            COMP=gcc_comp
            COMPOPTS=""
            INSERTCODE=""
            EXEC=gcc_exec
            iterfile=
            extension=".c"
            ;;

      java) NAME='Java'
            COMP=java_comp
            COMPOPTS=""
            INSERTCODE=""
            EXEC=java_exec
            iterfile=
            extension=".java"
            ;;

         *) error '>>> Unknown system'
            ;;
   esac

   if [ -n "$forceiters" ] ; then iterfile="$forceiters" ; fi

   if [ ! -e "sys" ]; then
       mkdir sys
   fi

   if [ ! -e "sys/$system" ]; then
       mkdir sys/$system
   fi

   cd sys/$system
   if [ $? != 0 ] ; then
      echo "ERROR: Can't change to directory sys/$system."
      exit 1
   fi

   {
      echo
      echo '****************************'
      echo Benchmarking ${NAME}-${setting} on `date` under `uname -a`
   } >> ../../results.${NAME}-${setting}

   for program in $benchmarks ; do
      evaluate $program
   done
   cd ../..
   if [ $? != 0 ] ; then
      echo "ERROR: Can't change back to benchmark directory."
      exit 1
   fi
done
