#! /bin/sh

# configure
# Copyright 1984-2016 Cisco Systems, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

machs=""; last=""; sep0=""; sep1=""; sep2=""; sep3=""; sep4=" and ";
for fn in boot/*/scheme.boot ; do
  machs=$machs$sep0$last
  last=`echo $fn | sed -e 's/boot\/\(.*\)\/scheme.boot/\1/'`
  sep0=$sep1; sep1=", "; sep2=$sep3; sep3=$sep4; sep4=", and "
done
machs=$machs$sep2$last

m=""
w=""
threads=no
temproot=""
help=no
gzipmanpages=yes
installowner=""
installgroup=""
installbin=""
installlib=""
installman=""
installschemename="scheme"
installpetitename="petite"
installscriptname="scheme-script"
CPPFLAGS=""
CFLAGS=""
LDFLAGS=""

case `uname` in
  Linux)
    if uname -a | egrep 'i386|i686|amd64|athlon|x86_64' > /dev/null 2>&1 ; then
      m32=i3le
      m64=a6le
      tm32=ti3le
      tm64=ta6le
    elif uname -a | grep -i power > /dev/null 2>&1 ; then
      m32=ppc32le
      m64=""
      tm32=tppc32le
      tm64=""
    fi
    installprefix=/usr
    installmansuffix=share/man
    ;;
  QNX)
    if uname -a | egrep 'x86' > /dev/null 2>&1 ; then
      m32=i3qnx
      tm32=ti3qnx
    fi
    installprefix=/usr/local
    installmansuffix=man
    ;;
  FreeBSD)
    if uname -a | egrep 'i386|i686|amd64|athlon|x86_64' > /dev/null 2>&1 ; then
      m32=i3fb
      m64=a6fb
      tm32=ti3fb
      tm64=ta6fb
    fi
    installprefix=/usr/local
    installmansuffix=man
    ;;
  OpenBSD)
    if uname -a | egrep 'i386|i686|amd64|athlon|x86_64' > /dev/null 2>&1 ; then
      m32=i3ob
      m64=a6ob
      tm32=ti3ob
      tm64=ta6ob
    fi
    installprefix=/usr/local
    installmansuffix=man
    ;;
  NetBSD)
    if uname -a | egrep 'i386|i686|amd64|athlon|x86_64' > /dev/null 2>&1 ; then
      m32=i3nb
      m64=a6nb
      tm32=ti3nb
      tm64=ta6nb
    fi
    installprefix=/usr
    installmansuffix=share/man
    gzipmanpages=no
    ;;
  Darwin)
    if uname -a | egrep 'i386|i686|amd64|athlon|x86_64' > /dev/null 2>&1 ; then
      m32=i3osx
      m64=a6osx
      tm32=ti3osx
      tm64=ta6osx
    fi
    installprefix=/usr/local
    installmansuffix=share/man
    ;;
  SunOS)
    if uname -a | egrep 'i386|i686|amd64|athlon|x86_64' > /dev/null 2>&1 ; then
      m32=i3s2
      m64=a6s2
      tm32=ti3s2
      tm64=ta6s2
      installprefix=/usr
      installmansuffix=share/man
      gzipmanpages=no
    fi
    ;;
esac

threads=""
bits=""

while [ $# != 0 ] ; do
  case $1 in
    -m=*)
      m=`echo $1 | sed -e 's/^-m=//'`
      ;;
    --machine=*)
      m=`echo $1 | sed -e 's/^--machine=//'`
      ;;
    --threads)
      threads=yes
      ;;
    --64)
      bits=64
      ;;
    --32)
      bits=32
      ;;
    --installprefix=*)
      installprefix=`echo $1 | sed -e 's/^--installprefix=//'`
      ;;
    --installlib=*)
      installlib=`echo $1 | sed -e 's/^--installlib=//'`
      ;;
    --installbin=*)
      installbin=`echo $1 | sed -e 's/^--installbin=//'`
      ;;
    --installman=*)
      installman=`echo $1 | sed -e 's/^--installman=//'`
      ;;
    --installowner=*)
      installowner=`echo $1 | sed -e 's/^--installowner=//'`
      ;;
    --installgroup=*)
      installgroup=`echo $1 | sed -e 's/^--installgroup=//'`
      ;;
    --installschemename=*)
      installschemename=`echo $1 | sed -e 's/^--installschemename=//'`
      ;;
    --installpetitename=*)
      installpetitename=`echo $1 | sed -e 's/^--installpetitename=//'`
      ;;
    --installscriptname=*)
      installscriptname=`echo $1 | sed -e 's/^--installscriptname=//'`
      ;;
    --gzip-man-pages)
      gzipmanpages=yes
      ;;
    --nogzip-man-pages)
      gzipmanpages=no
      ;;
    --temproot=*)
      temproot=`echo $1 | sed -e 's/^--temproot=//'`
      ;;
    --workarea=*)
      w=`echo $1 | sed -e 's/^--workarea=//'`
      ;;
    --help)
      help=yes
      ;;
    CPPFLAGS=*)
      CPPFLAGS=`echo $1 | sed -e 's/^CPPFLAGS=//'`
      ;;
    CFLAGS=*)
      CFLAGS=`echo $1 | sed -e 's/^CFLAGS=//'`
      ;;
    LDFLAGS=*)
      LDFLAGS=`echo $1 | sed -e 's/^LDFLAGS=//'`
      ;;
    *)
      echo "option '$1' unrecognized or missing an argument; try $0 --help"
      exit 1
      ;;
  esac
  shift
done

if [ "$bits" = "" ] ; then
  if uname -a | egrep 'amd64|x86_64' > /dev/null 2>&1 ; then
    bits=64
  else
    bits=32
  fi
fi

if [ "$threads" = "" ] ; then
  threads=no
fi

if [ "$m" = "" ] ; then
  if [ $bits = 64 ] ; then
    if [ $threads = yes ] ; then m=$tm64 ; else m=$m64 ; fi
  else
    if [ $threads = yes ] ; then m=$tm32 ; else m=$m32 ; fi
  fi
fi

if [ "$w" = "" ] ; then
  w=$m
fi

if [ "$installbin" = "" ] ; then
  installbin=$installprefix/bin
fi

if [ "$installlib" = "" ] ; then
  installlib=$installprefix/lib
fi

if [ "$installman" = "" ] ; then
  installman=$installprefix/$installmansuffix
fi

if [ "$help" = "yes" ]; then
  echo "Purpose:"
  echo "  $0 determines the machine type and constructs a custom Makefile"
  echo "  and Mf-install, taking into account the options below."
  echo ""
  echo "Options (defaults shown in parens):"
  echo "  --machine=<machine type>          explicitly specify machine type ($m)"
  echo "  -m=<machine type>                 same as --machine <machine type> ($m)"
  echo "  --threads                         specify threaded version ($threads)"
  echo "  --32|--64                         specify 32/64-bit version ($bits)"
  echo "  --installprefix=<pathname>        final installation root ($installprefix)"
  echo "  --installbin=<pathname>           bin directory ($installbin)"
  echo "  --installlib=<pathname>           lib directory ($installlib)"
  echo "  --installman=<pathname>           manpage directory ($installman)"
  echo "  --temproot=<pathname>             staging root ($temproot)"
  echo "  --installowner=<ownername>        install with owner ($installowner)"
  echo "  --installgroup=<groupname>        install with group ($installgroup)"
  echo "  --installschemename=<schemename>  install with group ($installschemename)"
  echo "  --installpetitename=<petitename>  install with group ($installpetitename)"
  echo "  --installscriptname=<scriptname>  install with group ($installscriptname)"
  echo "  --[no]gzip-man-pages              compress manual pages ($gzipmanpages)"
  echo "  --workarea=<pathname>             build directory ($w)"
  echo "  CPPFLAGS=<C preprocessor flags>   additional C preprocessor flags ($CPPFLAGS)"
  echo "  CFLAGS=<C compiler flags>         additional C compiler flags ($CFLAGS)"
  echo "  LDFLAGS=<linker flags>            additional linker flags ($LDFLAGS)"
  echo ""
  echo "Available machine types: $machs"
  echo ""
  echo "Examples:"
  echo "  $0 --machine=i3le"
  echo ""
  echo "  set machine-type to i3le rather than to determined type"
  echo ""
  echo "  $0 --threads --installprefix=/usr/local"
  echo ""
  echo "  specify threaded version and set installation directory to /usr/local."
  echo ""
  echo "  $0 --installprefix=/usr/local --temproot=/tmp"
  echo ""
  echo "  declare the final destination to be /usr/local but staging area"
  echo "  to be /tmp/usr/local.  Make will record the final destination in the"
  echo "  installed manual pages but actually install the system and manual"
  echo "  pages in the staging area."
  echo ""
  exit 0
fi

if [ "$m" = "" -o ! -f boot/$m/scheme.boot ] ; then
  echo "no suitable machine type found"
  echo "try rerunning as $0 -m=<machine type>"
  echo "available machine types: $machs"
  exit 1
fi

if [ -d '.git' ] ; then
  git submodule init && git submodule update || exit 1
else
  if [ ! -f 'nanopass/nanopass.ss' ] ; then
    rmdir nanopass && (curl  -L -o v1.9.tar.gz https://github.com/nanopass/nanopass-framework-scheme/archive/v1.9.tar.gz && tar -zxf v1.9.tar.gz && mv nanopass-framework-scheme-1.9 nanopass && rm v1.9.tar.gz) || exit 1
  fi

  if [ ! -f 'zlib/configure' ] ; then
    rmdir zlib && (curl -L -o v1.2.8.tar.gz https://github.com/madler/zlib/archive/v1.2.8.tar.gz && tar -xzf v1.2.8.tar.gz && mv zlib-1.2.8 zlib && rm v1.2.8.tar.gz) || exit 1
  fi

  if [ ! -f 'stex/Mf-stex' ] ; then
    rmdir stex && (curl -L -o v1.2.1.tar.gz https://github.com/dybvig/stex/archive/v1.2.1.tar.gz && tar -zxf v1.2.1.tar.gz && mv stex-1.2.1 stex && rm v1.2.1.tar.gz) || exit 1
  fi
fi

./workarea $m $w

sed -e 's/$(m)/'$m'/g'\
    -e 's/$(workarea)/'$w'/g'\
  makefiles/Makefile.in > Makefile

cat makefiles/Makefile-workarea.in > $w/Makefile

sed -e 's/$(m)/'$m'/g'\
    -e 's/$(workarea)/'$w'/g'\
    makefiles/Mf-boot.in > $w/Mf-boot

sed -e "s;^m=none\$;m=$m;"\
    -e "s;^InstallPrefix=.*\$;InstallPrefix=$installprefix;"\
    -e "s;^InstallBin=.*\$;InstallBin=$installbin;"\
    -e "s;^InstallLib=.*\$;InstallLib=$installlib;"\
    -e "s;^InstallMan=.*\$;InstallMan=$installman/man1;"\
    -e "s;^InstallOwner=.*\$;InstallOwner=$installowner;"\
    -e "s;^InstallGroup=.*\$;InstallGroup=$installgroup;"\
    -e "s;^TempRoot=.*;TempRoot=$temproot;"\
    -e "s;^GzipManPages=.*$;GzipManPages=$gzipmanpages;"\
    -e "s;^InstallSchemeName=.*$;InstallSchemeName=$installschemename;"\
    -e "s;^InstallPetiteName=.*$;InstallPetiteName=$installpetitename;"\
    -e "s;^InstallScriptName=.*$;InstallScriptName=$installscriptname;"\
    makefiles/Mf-install.in > $w/Mf-install

cat > $w/c/config.h << END
#define SCHEME_SCRIPT "$installscriptname"
#define DEFAULT_HEAP_PATH "$installlib/csv%v/%m"
END

cat > $w/c/Mf-config << END
CPPFLAGS=$CPPFLAGS
CFLAGS=$CFLAGS
LDFLAGS=$LDFLAGS
END
