#!/bin/sh

# Configure script for GRX
#
# NOTE: This script is completely OPTIONAL. If you don't know what
#       to do with it, just ignore it and follow the normal install
#       instructions.
#
# Copyright (C) 2001-2002,2004 Frank Heckenbach <frank@pascal.gnu.de>
#                              Peter Gerwinski <peter@gerwinski.de>
#
# Parts copied from some version of GCC's configure script,
# Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation, version 2.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.

silent=n

default_prefix=/usr/local
prefix=$default_prefix
exec_prefix='${prefix}'
bindir='${exec_prefix}/bin'
datadir='${prefix}/share'
libdir='${exec_prefix}/lib'
includedir='${prefix}/include'
infodir='${prefix}/info'

# "Detect" default target (wrong for cross-compiling)
if [ x"$COMSPEC" != x ]; then
  default_target=DJGPP
else
  default_target=x11
fi
target=$default_target

default_fontpath='${datadir}/grx/fonts'
fontpath=""

default_x11base=/usr/X11R6
x11base="$default_x11base"

default_x11lib='$(X11BASE)/lib'
x11lib="$default_x11lib"

default_unitspath='${exec_prefix}/units'
unitspath="$default_unitspath"

HAVE_LIBJPEG=n
HAVE_LIBPNG=n
NEED_ZLIB=n
HAVE_LIBTIFF=n
# if you are able to run this script you have (ba)sh
# we suppose you have other needed unix tools as well
HAVE_UNIX_TOOLS=y
INCLUDE_BMP_CODE=y
INCLUDE_PRINTING_CODE=y
INCLUDE_GPC_SUPPORT=n
INCLUDE_SHARED_SUPPORT=y
INCLUDE_BGI_SUPPORT=y
USE_DIRECT_MOUSE_DRIVER=n
USE_SVGALIB_DRIVER=y
USE_FRAMEBUFFER_DRIVER=y
SET_SUIDROOT=y
USE_INOUTP_FRAMEDRIVERS=y
BUILD_X86_64=n
lsocket=""
subst_EP=""

ac_prev=
for ac_option do

  # If the previous option needs an argument, assign it.
  if test -n "$ac_prev"; then
    eval "$ac_prev=\$ac_option"
    ac_prev=
    continue
  fi

  case "$ac_option" in
  -*=*) ac_optarg=`echo "$ac_option" | sed 's/[-_a-zA-Z0-9]*=//'`;;
  *) ac_optarg=;;
  esac

  case "$ac_option" in

  -s | --silent | --silen | --sile | --sil | --si | --s)
    silent=y;;

  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
    ac_prev=prefix;;
  -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
    prefix="$ac_optarg";;

  -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
  | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
  | --exec | --exe | --ex)
    ac_prev=exec_prefix ;;
  -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
  | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
  | --exec=* | --exe=* | --ex=*)
    exec_prefix=$ac_optarg ;;

  -bindir | --bindir | --bindi | --bind | --bin | --bi)
    ac_prev=bindir ;;
  -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
    bindir=$ac_optarg ;;

  -libdir | --libdir | --libdi | --libd)
    ac_prev=libdir ;;
  -libdir=* | --libdir=* | --libdi=* | --libd=*)
    libdir=$ac_optarg ;;

  -datadir | --datadir | --datadi | --datad | --data | --dat | --da)
    ac_prev=datadir ;;
  -datadir=* | --datadir=* | --datadi=* | --datad=* | --data=* | --dat=* \
  | --da=*)
    datadir=$ac_optarg ;;

  -includedir | --includedir | --includedi | --included | --include \
  | --includ | --inclu | --incl | --inc)
    ac_prev=includedir ;;
  -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
  | --includ=* | --inclu=* | --incl=* | --inc=*)
    includedir=$ac_optarg ;;

  -infodir | --infodir | --infodi | --infod | --info | --inf)
    ac_prev=infodir ;;
  -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
    infodir=$ac_optarg ;;

  -target | --target | --targe | --targ | --tar | --ta | --t)
    ac_prev=target;;
  -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
    target="$ac_optarg";;

  # Don't complain about unknown enable, disable, with and without options
  -enable-* | --enable-* | -en-* | --en-*)
    case "`echo "$ac_option" | sed -e 's/^-*enable-//;s/^-*en-//'`" in
      x86_64)          BUILD_X86_64=y;;
      jpeg)            HAVE_LIBJPEG=y;;
      png)             HAVE_LIBPNG=y;;
      z | zlib)        NEED_ZLIB=y;;
      png-z)           HAVE_LIBPNG=y; NEED_ZLIB=y;;
      tiff)            HAVE_LIBTIFF=y;;
      bmp)             INCLUDE_BMP_CODE=y;;
      print)           INCLUDE_PRINTING_CODE=y;;
      pascal | gpc)    INCLUDE_GPC_SUPPORT=y;;
      shared)          INCLUDE_SHARED_SUPPORT=y;;
      bgi)             INCLUDE_BGI_SUPPORT=y;;
      direct-mouse)    USE_DIRECT_MOUSE_DRIVER=y;;
      svgalib)         USE_SVGALIB_DRIVER=y;;
      framebuffer)     USE_FRAMEBUFFER_DRIVER=y;;
      suidroot)        SET_SUIDROOT=y;;
      io-framedrivers) USE_INOUTP_FRAMEDRIVERS=y;;
      lsocket)         lsocket=" -lsocket";;
    esac;;
  -disable-* | --disable-* | -di-* | --di-*)
    case "`echo "$ac_option" | sed -e 's/^-*disable-//;s/^-*di-//'`" in
      x86_64)          BUILD_X86_64=n;;
      jpeg)            HAVE_LIBJPEG=n;;
      png)             HAVE_LIBPNG=n;;
      z | zlib)        NEED_ZLIB=n;;
      png-z)           HAVE_LIBPNG=n; NEED_ZLIB=n;;
      tiff)            HAVE_LIBTIFF=n;;
      bmp)             INCLUDE_BMP_CODE=n;;
      print)           INCLUDE_PRINTING_CODE=n;;
      pascal | gpc)    INCLUDE_GPC_SUPPORT=n;;
      shared)          INCLUDE_SHARED_SUPPORT=n;;
      bgi)             INCLUDE_BGI_SUPPORT=n;;
      direct-mouse)    USE_DIRECT_MOUSE_DRIVER=n;;
      svgalib)         USE_SVGALIB_DRIVER=n;;
      framebuffer)     USE_FRAMEBUFFER_DRIVER=n;;
      suidroot)        SET_SUIDROOT=n;;
      io-framedrivers) USE_INOUTP_FRAMEDRIVERS=n;;
      lsocket)         lsocket="";;
    esac;;
  -with-* | --with-*)
    case "`echo "$ac_option" | sed -e 's/^-*with-//'`" in
      fontpath=*)  fontpath="$ac_optarg";;
      fontpath)    fontpath="$default_fontpath";;
      x11-base=*)  x11base="$ac_optarg";;
      x11-base)    echo "$0: \`--with-x11-base' requires an argument" >&2; exit 1;;
      x11-lib=*)   x11lib="$ac_optarg";;
      x11-base)    echo "$0: \`--with-x11-lib' requires an argument" >&2; exit 1;;
      unitspath=*)  unitspath="$ac_optarg";;
      unitspath)    echo "$0: \`--with-unitspath' requires an argument" >&2; exit 1;;
    esac;;
  -without-* | --without-*)
    case "`echo "$ac_option" | sed -e 's/^-*without-//'`" in
      fontpath)    fontpath="";;
    esac;;
  -h | -help | --help | --hel | --he)
    cat << EOF
Usage: $0 [options]
Options: [defaults in brackets after descriptions]
  --help                    print this message and exit
  --version                 print version information and exit
  --silent                  silent operation
  --prefix=PREFIX           install architecture-independent files in PREFIX
                            [$default_prefix]
  --exec-prefix=EPREFIX     install architecture-dependent files in EPREFIX
                            [PREFIX]
  --bindir=DIR              user executables [EPREFIX/bin]
  --datadir=DIR             read-only architecture-independent data
                            [PREFIX/share]
  --libdir=DIR              object code libraries [EPREFIX/lib]
  --includedir=DIR          C header files [PREFIX/include]
  --infodir=DIR             info documentation [PREFIX/info]
  --target=TARGET           configure for TARGET [$default_target]
                            possible values: djgpp,x11,console,w32,sdlx,sdlw
                            or GCC-style ("i386-mingw32") for cross-compiling
  --enable-x86_64           build for x86_64 architecture [no]
  --enable-jpeg             include JPEG support [no]
  --enable-png              include PNG support [no]
  --enable-zlib             use zlib [no]
  --enable-png-z            include PNG support and use zlib [no]
  --enable-tiff             include TIFF support [no]
  --enable-bmp              include BMP support [yes]
  --enable-print            include printing code [yes]
  --enable-pascal or        include Pascal support [no]
    --enable-gpc
  --enable-shared           build shared libraries [yes]
  --enable-bgi              include BGI support [yes]
  --enable-lsocket          link lsocket [no]
  --disable-FOO             opposite of --enable-FOO
  --with-fontpath=PATH      set GRX font path to PATH
  --with-fontpath           set GRX font path to $default_fontpath
  --without-fontpath        use no GRX font path [default]
  --with-x11-base=DIR       use DIR as X11 base directory [$default_x11base]
  --with-x11-lib=DIR        use DIR as X11 lib directory [$default_x11lib]
  --with-unitspath=PATH     set GPC units path to PATH [$default_unitspath]
The following options apply to the Linux console (not X11) target only:
  --enable-direct-mouse     use PS/2 instead of svgalib mouse driver [no]
  --enable-svgalib          use svgalib driver [yes]
  --enable-framebuffer      use framebuffer driver [yes]
  --enable-suidroot         create suid root executables (required with svgalib
                            1.4.x) [yes]
  --enable-io-framedrivers  use frame drivers that require suid root
                            executables under newer versions of svgalib [yes]
Some options can be abbreviated, e.g. \`--p' for \`--prefix',
\`--en-FOO' for \`--enable-FOO' and \`--di-FOO' for \`--disable-FOO'.
NOTE: This script is completely OPTIONAL. If you don't know what to do with it,
      just ignore it and follow the normal install instructions.
EOF
    exit 0;;
  -v | -version | --version | --versio | --versi | --vers)
    echo "Optional GRX configure script"
    exit 0;;
  *) { echo "$0: error: $ac_option: invalid option; use --help to show usage" 1>&2; exit 1; }
    ;;
  esac
done

case "`echo "$target" | tr A-Z a-z`" in
  *djgpp*)        cfgsection=GRXVDJ2; target_makefile=makefile.dj2;;
  x | x11)        cfgsection=GRXVX11; target_makefile=makefile.x11;;
  console)        cfgsection=GRXVLNX; target_makefile=makefile.lnx;;
  *w32 | *mingw*) cfgsection=GRXVW32; target_makefile=makefile.w32;;
  sdlx)           cfgsection=GRXVX11; target_makefile=makefile.sdl; subst_EP="/^EP=/s/=.*/=x/";;
  sdlw)           cfgsection=GRXVW32; target_makefile=makefile.sdl; subst_EP="/^EP=/s/=.*/=/";;
  *)              echo "$0: invalid target" >&2; exit 1;;
esac

case "$target" in
  *[A-Za-z0-9]-[A-Za-z0-9]*|mingw32)
     CROSS_PLATFORM="`echo "$target" | tr A-Z a-z`-"
     exec_prefix="$prefix/$target";;
  *)
     CROSS_PLATFORM=""
     exec_prefix='${prefix}';;
esac

if [ $USE_SVGALIB_DRIVER != y ] && [ $USE_FRAMEBUFFER_DRIVER != y ]; then
  echo "$0: either \`--enable-svgalib' or \`--enable-framebuffer' must be set" >&2
  exit 1
fi

if [ $USE_SVGALIB_DRIVER != y ] && [ $USE_DIRECT_MOUSE_DRIVER != y ]; then
  echo "$0: if \`--disable-svgalib' is unset then \`--enable-direct-mouse' must be set" >&2
  exit 1
fi

if [ -r Makefile ]; then
  if cmp Makefile makefile.lnx > /dev/null 2>&1 ||
     cmp Makefile makefile.dj2 > /dev/null 2>&1 ||
     cmp Makefile makefile.w32 > /dev/null 2>&1 ||
     cmp Makefile makefile.x11 > /dev/null 2>&1 ||
     cmp Makefile makefile.sdl > /dev/null 2>&1; then
    rm -f Makefile
  else
    echo "$0: Makefile exists already. Not overwriting!" >&2
    exit 1
  fi
fi

if [ ! -r "$target_makefile" ]; then
  echo "$0: $target_makefile not found (please run in source directory)" >&2
  exit 1
fi

# On DJGPP, `ln -s' creates `makefile.exe', so copy in this case
{ ln -s "$target_makefile" Makefile && [ -r Makefile ]; } ||
  { rm -f makefile.exe; cp "$target_makefile" Makefile; }
[ $silent = y ] || echo "Created Makefile"

cfgfile="makedefs.grx"
cfgorigfile="makedefs.orig"
if [ ! -r "$cfgfile" ]; then
  echo "$0: $cfgfile not found" >&2
  exit 1											    
fi

if [ ! -r "$cfgorigfile" ]; then
  cp "$cfgfile" "$cfgorigfile"
fi

if [ x"$fontpath" = x ]; then
  subst_fontpath="/^#*GRX_DEFAULT_FONT_PATH=/s/^#*/#/"
else
  subst_fontpath="/^#*GRX_DEFAULT_FONT_PATH=/{s/^#*//;s|=.*|=$fontpath|;}"
fi

if [ "$cfgsection" = GRXVLNX ] || [ "$cfgsection" = GRXVX11 ]; then
  extra_unix="/^ifdef GRXVUNX\$/,/^endif\$/{/^prefix=/s|=.*|=$prefix|;$subst_fontpath;}"
else
  extra_unix=
fi

if sed -e "/^BUILD_X86_64=/s/=.*/=$BUILD_X86_64/;
           $subst_EP;
           /^HAVE_LIBTIFF=/s/=.*/=$HAVE_LIBTIFF/;
           /^HAVE_LIBJPEG=/s/=.*/=$HAVE_LIBJPEG/;
           /^HAVE_LIBPNG=/s/=.*/=$HAVE_LIBPNG/;
           /^HAVE_UNIX_TOOLS=/s/=.*/=$HAVE_UNIX_TOOLS/;
           /^NEED_ZLIB=/s/=.*/=$NEED_ZLIB/;
           /^INCLUDE_PRINTING_CODE=/s/=.*/=$INCLUDE_PRINTING_CODE/;
           /^INCLUDE_BMP_CODE=/s/=.*/=$INCLUDE_BMP_CODE/;
           /^INCLUDE_GPC_SUPPORT=/s/=.*/=$INCLUDE_GPC_SUPPORT/;
           /^INCLUDE_SHARED_SUPPORT=/s/=.*/=$INCLUDE_SHARED_SUPPORT/;
           /^INCLUDE_BGI_SUPPORT=/s/=.*/=$INCLUDE_BGI_SUPPORT/;
           /^CROSS_PLATFORM=/s/=.*/=$CROSS_PLATFORM/;
           /^USE_DIRECT_MOUSE_DRIVER=/s/=.*/=$USE_DIRECT_MOUSE_DRIVER/;
           /^USE_SVGALIB_DRIVER=/s/=.*/=$USE_SVGALIB_DRIVER/;
           /^USE_FRAMEBUFFER_DRIVER=/s/=.*/=$USE_FRAMEBUFFER_DRIVER/;
           /^SET_SUIDROOT=/s/=.*/=$SET_SUIDROOT/;
           /^USE_INOUTP_FRAMEDRIVERS=/s/=.*/=$USE_INOUTP_FRAMEDRIVERS/;
           /^exec_prefix=/s|=.*|=$exec_prefix|;
           /^bindir=/s|=.*|=$bindir|;
           /^libdir=/s|=.*|=$libdir|;
           /^datadir=/s|=.*|=$datadir|;
           /^includedir=/s|=.*|=$includedir|;
           /^unitsdir=/s|=.*|=$unitspath|;
           /^infodir=/s|=.*|=$infodir|;
           $extra_unix;
           /^ifdef $cfgsection\$/,/^endif\$/{
             /^prefix=/s|=.*|=$prefix|;
             $subst_fontpath;
             /^X11BASE=/s|=.*|=$x11base|;
             /^X11LIB=/s|=.*|=$x11lib|;
             /^X11LIBS=/s/\$/$lsocket/;
           }" "$cfgorigfile" > "$cfgfile"; then
  [ $silent = y ] || echo "Modified $cfgfile"
else
  cp -f "$cfgorigfile" "$cfgfile"
  exit 1
fi

if [ x"$INCLUDE_GPC_SUPPORT" = x"y" ]; then
  for file in pascal/grx.pas pascal/bgi/graph.pas; do
    if [ ! -r "$file" ]; then
      echo "$0: $file not found" >&2
      exit 1
    fi
    if sed -e "s/{.*\\\$define LINUX_CONSOLE}/{`if [ x"$target" != x"console" ]; then echo .; fi`\$define LINUX_CONSOLE}/;
               s/{.*\\\$define SVGALIB}/{`if [ x"$target" != x"console" -o $USE_SVGALIB_DRIVER != y ]; then echo .; fi`\$define SVGALIB}/;
               s/{.*\\\$define __SDL__}/{`if [ x"$target" != x"sdlx" -a x"$target" != x"sdlw" ]; then echo .; fi`\$define __SDL__}/;
               s/{.*\\\$L socket}/{`if [ x"$lsocket" = x ]; then echo .; fi`\$L socket}/
              " "$file" > "$file.new" &&
       sed -e "s/{.*\\\$L tiff}/{`if [ $HAVE_LIBTIFF != y ]; then echo .; fi`\$L tiff}/;
               s/{.*\\\$L jpeg}/{`if [ $HAVE_LIBJPEG != y ]; then echo .; fi`\$L jpeg}/;
               s/{.*\\\$L png}/{`if [ $HAVE_LIBPNG != y ]; then echo .; fi`\$L png}/;
               s/{.*\\\$L z}/{`if [ $NEED_ZLIB != y ]; then echo .; fi`\$L z}/;
              " "$file.new" > "$file" &&
       rm -f "$file.new" ; then
      [ $silent = y ] || echo "Modified $file"
    else
      rm -f "$file.new"
      exit 1
    fi
  done
fi