#!/bin/sh

# Heavily based on the Slackware 13.1 SlackBuild
# Written by Matteo Rossini
# Last build from Savino Liguori ( jimmy_page_89@hotmail.it )

# Slackware build script for chromium
# Official Site: http://build.chromium.org/

# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AS IS AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

set -e

PKGNAME=chromium
OBUILD=${BUILD:-1sl}
ARCH=${ARCH:-x86_64}
#SOURCEBASE=http://build.chromium.org/buildbot/archives/
SOURCEBASE="http://chromium-browser-source.commondatastorage.googleapis.com"
RELEASE=$(wget -q $SOURCEBASE/chromium_tarball.html -O -|grep "a href"|sed -r 's/^.*"chromium.(r[0-9]+)\.tgz".*$/\1/')
SOURCE=$SOURCEBASE/$PKGNAME.$RELEASE.tgz
CWDSIZE=800
TMPSIZE=3800

if [ ! -e ${PKGNAME}.${RELEASE}.tgz ];then
  if [ $(df -k .|tail -1|awk '{print $4}' ) -lt ${CWDSIZE}000 ];then
    echo "No space left to download source file. You need ${CWDSIZE}Mb of free space"
    exit 1
  fi
  wget $SOURCE
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/buildpkgs/$PKGNAME}
PKG=$TMP/package-$PKGNAME
OUTPUT=${OUTPUT:-$CWD}

#Using last version from svn (Recommended 1)
SVN_UPDATE=${SVN_UPDATE:-0}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O3 -pipe -fPIC" # Change cflags to your needs
  LIBDIRSUFFIX="64"
fi

rm -rf $TMP
mkdir -p $TMP $PKG $OUTPUT

if [ $(df -k .|tail -1|awk '{print $4}' ) -lt ${TMPSIZE}000 ];then
  echo "No space left to build $PKGNAME. You need ${TMPSIZE}Mb of free space"
  exit 1
fi
cd $TMP

tar xvf $CWD/${PKGNAME}*.tgz \
 --exclude src/third_party/pefile \
 --exclude src/third_party/GTM \
 --exclude src/third_party/swig/win \
 --exclude src/third_party/python_24 \
 --exclude src/third_party/nss \
 --exclude src/third_party/WebKit/WebKitLibraries \
 --exclude src/third_party/pdfsqueeze \
 --exclude src/third_party/swig/mac \
 --exclude src/third_party/lighttpd \
 --exclude src/third_party/ffmpeg/binaries/chromium/win/ia32 \
 --exclude src/third_party/mingw-w64/mingw/bin \
 --exclude src/third_party/cygwin \
 --exclude src/third_party/WebKit/WebKit/mac

cd home/chrome-svn/tarball/chromium/

chown -R root:root .
chmod -R u+w,go+r-w,a-s .

cd src

# Fetch depot tools
svn co http://src.chromium.org/svn/trunk/tools/depot_tools
export PATH=$(pwd)/depot_tools:"$PATH"

# Exporting variables
export GYP_GENERATORS='make'
export BUILDTYPE='Release'
GYP_DEFINES="fastbuild=1 linux_sandbox_path=/usr/lib$LIBDIRSUFFIX/$PKGNAME/chromium-sandbox use_system_yasm=1 release_extra_cflags='$SLKCFLAGS'"
[[ $ARCH == "x86_64" ]] && GYP_DEFINES+=" linux_fpic=1 target_arch=x64"
export GYP_DEFINES

# Updating tree and update version number
if [ $SVN_UPDATE == 1 ]; then 
    gclient sync
    REV=$(grep -A 1 dir .svn/entries | grep "^[0-9]" | head -1)
else
    REV=$(echo $VERSION | sed 's/r//')
fi

source chrome/VERSION
VERSION="$MAJOR.$MINOR.$BUILD.$PATCH"

# Ensure correct makefiles generation
gclient runhooks --force

# Compile the application
make chrome chrome_sandbox


# Install binaries
SRC="out/Release"

install -d -g root -o root -m 755 $PKG/usr/lib$LIBDIRSUFFIX/$PKGNAME/
install -d -g root -o root -m 755 $PKG/usr/man/man1
install -d -g root -o root -m 755 $PKG/usr/bin/

cp -r  $SRC/{locales,resources} $PKG/usr/lib$LIBDIRSUFFIX/$PKGNAME/
install -d -g root -o root -m 755 $PKG/usr/lib$LIBDIRSUFFIX/$PKGNAME/{locales,resources}
find $PKG/usr/lib$LIBDIRSUFFIX/$PKGNAME/{locales,resources} -type f -exec chmod 644 {} \;

install -g root -o root -m 755 $SRC/chrome $PKG/usr/lib$LIBDIRSUFFIX/$PKGNAME/chromium
install -g root -o root -m 4755 $SRC/chrome_sandbox $PKG/usr/lib$LIBDIRSUFFIX/$PKGNAME/chromium-sandbox
install -g root -o root -m 755 $SRC/xdg-settings $PKG/usr/lib$LIBDIRSUFFIX/$PKGNAME/xdg-settings
install -g root -o root -m 644 $SRC/chrome.pak $PKG/usr/lib$LIBDIRSUFFIX/$PKGNAME/chrome.pak
install -g root -o root -m 644 $SRC/chrome.1 $PKG/usr/man/man1/chromium.1

### In this section you may remove some not needed files or move that file in other path

# Create a symlink in /usr/bin
( cd $PKG/usr/bin
  ln -s ../lib$LIBDIRSUFFIX/$PKGNAME/chromium chromium
)

# fixing install error
( cd $PKG/usr/lib$LIBDIRSUFFIX/$PKGNAME
  cp chrome.pak resources.pak
)

mkdir -p $PKG/usr/share/applications
cat $CWD/chromium.desktop > $PKG/usr/share/applications/chromium.desktop

mkdir -p $PKG/usr/share/pixmaps
cp $CWD/chromium_logo.png $PKG/usr/share/pixmaps/chromium.png

### copy some documentation files
mkdir -p $PKG/usr/doc/$PKGNAME-$VERSION
cp -a \
  AUTHORS LICENSE \
  $PKG/usr/doc/$PKGNAME-$VERSION
cat $CWD/$PKGNAME.SlackBuild > $PKG/usr/doc/$PKGNAME-$VERSION/$PKGNAME.SlackBuild
cat $CWD/slack-desc > $PKG/usr/doc/$PKGNAME-$VERSION/slack-desc

#Stripping
( cd $PKG
  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs -r strip --strip-unneeded 2> /dev/null || true
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs -r strip --strip-unneeded 2> /dev/null || true
  find . | xargs file | grep "current ar archive" | cut -f 1 -d : | xargs -r strip --strip-unneeded 2> /dev/null || true
)

### compress man pages
if [ -d $PKG/usr/man ]; then
    ( cd $PKG/usr/man
      find . -type f -exec gzip -9 {} \;
      for i in $( find . -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
    )
fi

### popolate the install/ directory
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

### reset owner and create slack-required file.
cd $PKG
chown -R root:root $PKG
chmod 4755 $PKG/usr/lib$LIBDIRSUFFIX/$PKGNAME/chromium-sandbox

if [ -x "$(which requiredbuilder 2>/dev/null)" ];then
 ADD="seamonkey-solibs >= 2.0.4-$ARCH-1" \
  requiredbuilder -y -v -s $CWD $PKG
fi

### finally make the package. 
/sbin/makepkg -l y -c n $OUTPUT/$PKGNAME-$VERSION-$ARCH-$OBUILD.${PKGTYPE:-txz}

if [ "$1" = "--cleanup" ]; then
  rm -rf $TMP
fi