#!/usr/bin/env bash

#  dvdisaster: Additional error correction for optical media.
#  Copyright (C) 2004-2018 Carsten Gnoerlich.
#
#  Email: support@dvdisaster.org
#
#  This file is part of dvdisaster.
#
#  dvdisaster 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, either version 3 of the License, or
#  (at your option) any later version.
#
#  dvdisaster 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 dvdisaster. If not, see <http://www.gnu.org/licenses/>.

# Load the shell functions needed for the rest of this script.

BASH_BASED_CONFIGURE=./scripts/bash-based-configure
BASH_BASED_CONFIGURE_OPTS="--buildtmp=$(pwd)/build $@"
REQUIRED_CFLAGS="-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -I. -pipe"
RECOMMENDED_CFLAGS="-O2 -fomit-frame-pointer -Wall -Wno-unknown-warning-option -Wno-deprecated-declarations -Wno-stringop-truncation -Wno-format-zero-length"
DEBUG_CFLAGS="-ggdb -Wall"

if test -e $BASH_BASED_CONFIGURE; then
   source $BASH_BASED_CONFIGURE $BASH_BASED_CONFIGURE_OPTS
else
   echo "Could not find $BASH_BASED_CONFIGURE"
   echo "You're probably not in the right directory."
   exit 1
fi

# Set the package name and version

PACKAGE dvdisaster 0.79.8
DEFINE_INT PATCHLEVEL 9
DEFINE_STRING HAVE_UNSTABLE_RELEASE 1
DEFINE_STRING HOMEPAGE "https://dvdisaster.jcea.es"

# Check for some essential tools.

REQUIRE_GMAKE
REQUIRE_GCC

# Find out and verify the basedir of the source installation,
# and where to install the binary.

GET_SRCDIR GNUmakefile.template
GET_PKGNAME
GET_PREFIX /usr/local
GET_BINDIR
GET_MANDIR
GET_DOCDIR
GET_DIR "$PKGNAME" docsub "Documentation sub"\
        "       put documentation into this subdirectory\n                        under \$DOCDIR "
GET_LOCALEDIR
GET_BUILDROOT
GET_BUILDTMP

PRINT_MESSAGE "\nDetermining build flavor:"

# old way of specifying --with-cli-only
if [ "$CLI_ONLY" = 1 ]; then
  cfg_with_cli_only=yes
  unset CLI_ONLY
fi

WITH_OPTION cli-only no "[yes | no]"

# Remove the useless CLI console under windows
if [[ $(uname) =~ MINGW ]] && [ "$cfg_with_cli_only" != "yes" ]; then
  CFG_LDFLAGS="$CFG_LDFLAGS -mwindows"
fi

# Look for required libraries

PRINT_MESSAGE "\nLooking for includes and libraries:"

REQUIRE_GLIB2 2 32 0
if test "$cfg_with_cli_only" != "yes"; then
  REQUIRE_GTK2 2 6 0 WITH_THREADS
fi
echo

if ! CHECK_INCLUDE locale.h locale || ! CHECK_INCLUDE libintl.h intl ; then
  echo " [previous test forces -with-nls=no]"
  cfg_force_with_nls=no
fi

if CHECK_INCLUDE cpuid.h cpuid; then
  CFG_HAVE_OPTIONS="$CFG_HAVE_OPTIONS -DHAVE_CPUID"
fi
CHECK_LIBRARY intl gettext intl
CHECK_LIBRARY cam cam_open_device cam

# Look for required functions

PRINT_MESSAGE "\nChecking for functions and symbols..."

CHECK_FUNCTION mmap

if ! CHECK_FUNCTION getopt_long ; then
  if ! test -e src/getopt.h || ! test -e src/getopt.c ; then
    echo " * getopt_long is missing. You can provide one by simply"
    echo " * copying getopt.c, getopt1.c and getopt.h from the GNU"
    echo " * C library into the src/ directory."
    exit 1
  fi
fi

if ! CHECK_FUNCTION gettext ; then
  echo " [previous test forces -with-nls=no]"
  cfg_force_with_nls=no
fi

CHECK_FUNCTION round

SAVE_CFLAGS=$CFG_CFLAGS
CFG_CFLAGS="$CFG_CFLAGS -D_LARGEFILE64_SOURCE"
CHECK_SYMBOL fcntl.h O_LARGEFILE
CFG_CFLAGS=$SAVE_CFLAGS

# Machine specific

echo
CHECK_ENDIAN
CHECK_BITNESS
CHECK_SSE2
CHECK_ALTIVEC

# Look for required tools

PRINT_MESSAGE "\nChecking for additional tools..."

if ! EXECUTE_PROGRAM "xgettext --help" xgettext \
 ||! EXECUTE_PROGRAM "msgmerge --help" msgmerge \
 ||! EXECUTE_PROGRAM "msgfmt --help" msgfmt ; then
  echo "* You need to install the GNU gettext tools"
  echo "* for localization support."
  echo " [previous test forces -with-nls=no]"
  cfg_force_with_nls=no
fi

if test "$cfg_with_cli_only" != "yes"; then
  if ! EXECUTE_PROGRAM "gdk-pixbuf-csource --help" gdk_pixbuf_csource ; then
    echo "* gdk-pixbuf not installed"
    echo "* or path to gdk-pixbuf-csource is missing."
    exit 1
  fi
fi

# Evaluate the --with* customization options

PRINT_MESSAGE "\nAdditional configuration options:"

WITH_OPTION nls yes "[yes | no]"
WITH_OPTION embedded-src-path yes "[yes | no]"

PRINT_MESSAGE "\nDebugging options (do not use in production system):"

WITH_OPTION memdebug no "[no | yes]"
WITH_OPTION debug-printf-format no "[no | yes]"
WITH_OPTION werror no "[no | yes]"

if test "$cfg_with_debug_printf_format" == "yes"; then
  # don't use the binary compiled with this,
  # it's only useful to properly get all the build-time
  # warnings around printf-errors, that are otherwise
  # not catched by the compiler because of the _() macro
  DEFINE_STRING DEBUG_PRINTF_FORMAT 1
else
  # warnings given by -Wformat-security are bogus because of _(),
  # see above comment if you actually want to check for format errors
  CFG_CFLAGS="$CFG_CFLAGS -Wno-format-security"
fi

if test "$cfg_with_werror" == "yes"; then
  CFG_CFLAGS="$CFG_CFLAGS -Werror"
fi

if test "$cfg_with_efence" == "yes"; then
  if ! CHECK_LIBRARY efence malloc efence; then
    exit 1;
  fi
fi

# -------------- end of manual configuration --------------------

# Do not proceed further if in --help mode

if test -n "$cfg_help_mode"; then
     FINALIZE_HELP
     exit 0
fi

# Fetch the source files and build the CFILES/OFILES list

PRINT_MESSAGE "\nCollecting source files:"

rm -f src/conftest.c src/method-link.c
cfiles="src/method-link.c"
ofiles="$BUILDTMP/method-link.o"

for cfile in src/*.c; do
  if test "$cfg_with_cli_only" == "yes"; then
    grep -q 'DVDISASTER_GUI_FILE' "$cfile" && continue
  fi
  cfile_prefix=`echo $cfile | sed -e 's/\.c//'`
  cfiles="$cfiles $cfile"
  ofiles="$ofiles $BUILDTMP/$(basename $cfile_prefix.o)"
  echo -n " $cfile_prefix"
done

echo
echo -e "\nCFG_CFILES = $cfiles" >> Makefile.config
echo "CFG_OFILES = $ofiles" >> Makefile.config
if test "$cfg_with_cli_only" != "yes"; then
  echo "ICONS = src/inlined-icons.h" >> Makefile.config
fi

# Create the method wrapper

PRINT_MESSAGE "\nCollecting methods:"

cat >> src/method-link.c <<EOF
/* Automatically generated wrapper for registering the methods */
 
void BindMethods(void)
{
EOF

for method in src/ecc-*.c; do
  method_name=`echo $(basename $method) | sed -e 's/\.c//' -e 's/ecc-//'`
  method_prefix="$method_prefix $method_name"
  echo -n " $method_name"
done

for method in $method_prefix; do
  echo "   void register_${method}(void);" >> src/method-link.c
done

echo >> src/method-link.c

for method in $method_prefix; do
  echo "   register_${method}();" >> src/method-link.c
done

echo "}" >> src/method-link.c
echo 

# Okay, hopefully we've got everything together now.

(cd locale; bash create-makefile)
CREATE_MAKEFILES GNUmakefile 

# Okay, tell the user we're done and how to proceed.

echo
echo "Configuration is complete."
echo "Type 'make show' to verify the settings,"
echo "or enter 'make' to start the build immediately."
echo 

if test -n "$CFLAGS"; then
  echo "* Note that your \$CFLAGS=$CFLAGS"
  echo "* have been included into the configuration."
  echo "* It is recommended not to specify additional \$CFLAGS,"
  echo "* but feel free to continue at your own risk."
  echo
fi

if test -n "$LDFLAGS"; then
  echo "* Note that your \$LDFLAGS=$LDFLAGS"
  echo "* have been included into the configuration."
  echo "* It is recommended not to specify additional \$LDFLAGS,"
  echo "* but feel free to continue at your own risk."
  echo
fi

if test -n "$BUILDROOT"; then
  echo "* Note that installation will be done relative to"
  echo "* \$BUILDROOT=$BUILDROOT."
  echo "* This is okay if you want to create packages like rpm or"
  echo "* debian archives."
  echo "* Normal installs will be broken by setting --buildroot." 
  echo
fi

id_binary="id"
if test `$id_binary -u` -eq 0; then
  echo "* WARNING: Compiling the project as ROOT USER is not recommended"
  echo "*          and may cause unexpected problems. If compilation fails"
  echo "*          please delete the source archive, unpack it anew and"
  echo "*          try again as ordinary user."
  echo "*          Installing the package as root is okay, of course."
fi