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 #!/bin/bash -e

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.

 # Use of this source code is governed by a BSD-style license that can be

 # found in the LICENSE file.

 # Script to install everything needed to build chromium (well, ideally, anyway)

 # See http://code.google.com/p/chromium/wiki/LinuxBuildInstructions

 # and http://code.google.com/p/chromium/wiki/LinuxBuild64Bit

 usage() {

   echo "Usage: $0 [--options]"

   echo "Options:"

   echo "--[no-]syms: enable or disable installation of debugging symbols"

   echo "--[no-]lib32: enable or disable installation of 32 bit libraries"

   echo "--no-prompt: silently select standard options/defaults"

   echo "Script will prompt interactively if options not given."

   exit 1

 }

 while test "$1" != ""

 do

   case "$1" in

   --syms)                   do_inst_syms=1;;

   --no-syms)                do_inst_syms=0;;

   --lib32)                  do_inst_lib32=1;;

   --no-lib32)               do_inst_lib32=0;;

   --no-prompt)              do_default=1

                             do_quietly="-qq --assume-yes"

     ;;

   *) usage;;

   esac

   shift

 done

 if ! egrep -q \

     'Ubuntu (10\.04|10\.10|11\.04|11\.10|12\.04|lucid|maverick|natty|oneiric|precise)' \

     /etc/issue; then

   echo "Only Ubuntu 10.04 (lucid) through 12.04 (precise) are currently" \

       "supported" >&2

   exit 1

 fi

 if ! uname -m | egrep -q "i686|x86_64"; then

   echo "Only x86 architectures are currently supported" >&2

   exit

 fi

 if [ "x$(id -u)" != x0 ]; then

   echo "Running as non-root user."

   echo "You might have to enter your password one or more times for 'sudo'."

   echo

 fi

 # Packages needed for chromeos only

 chromeos_dev_list="libbluetooth-dev libpulse-dev"

 # Packages need for development

 dev_list="apache2.2-bin bison curl elfutils fakeroot flex g++ gperf

           language-pack-fr libapache2-mod-php5 libasound2-dev libbz2-dev

           libcairo2-dev libcups2-dev libcurl4-gnutls-dev libdbus-glib-1-dev

           libelf-dev libgconf2-dev libgl1-mesa-dev libglib2.0-dev

           libglu1-mesa-dev libgnome-keyring-dev libgtk2.0-dev

           libkrb5-dev libnspr4-dev libnss3-dev libpam0g-dev libsctp-dev

           libsqlite3-dev libssl-dev libudev-dev libwww-perl libxslt1-dev

           libxss-dev libxt-dev libxtst-dev mesa-common-dev patch

           perl php5-cgi pkg-config python python-cherrypy3 python-dev

           python-psutil rpm ruby subversion ttf-dejavu-core ttf-indic-fonts

           ttf-kochi-gothic ttf-kochi-mincho ttf-thai-tlwg wdiff git-core

           $chromeos_dev_list"

 # 64-bit systems need a minimum set of 32-bit compat packages for the pre-built

 # NaCl binaries. These are always needed, regardless of whether or not we want

 # the full 32-bit "cross-compile" support (--lib32).

 if [ "$(uname -m)" = "x86_64" ]; then

   dev_list="${dev_list} libc6-i386 lib32gcc1 lib32stdc++6"

 fi

 # Run-time libraries required by chromeos only

 chromeos_lib_list="libpulse0 libbz2-1.0 libcurl4-gnutls-dev"

 # Full list of required run-time libraries

 lib_list="libatk1.0-0 libc6 libasound2 libcairo2 libcups2 libdbus-glib-1-2

           libexpat1 libfontconfig1 libfreetype6 libglib2.0-0 libgnome-keyring0

           libgtk2.0-0 libpam0g libpango1.0-0 libpcre3 libpixman-1-0

           libpng12-0 libstdc++6 libsqlite3-0 libudev0 libx11-6 libxau6 libxcb1

           libxcomposite1 libxcursor1 libxdamage1 libxdmcp6 libxext6 libxfixes3

           libxi6 libxinerama1 libxrandr2 libxrender1 libxtst6 zlib1g

           $chromeos_lib_list"

 # Debugging symbols for all of the run-time libraries

 dbg_list="libatk1.0-dbg libc6-dbg libcairo2-dbg libdbus-glib-1-2-dbg

           libfontconfig1-dbg libglib2.0-0-dbg libgtk2.0-0-dbg

           libpango1.0-0-dbg libpcre3-dbg libpixman-1-0-dbg

           libsqlite3-0-dbg

           libx11-6-dbg libxau6-dbg libxcb1-dbg libxcomposite1-dbg

           libxcursor1-dbg libxdamage1-dbg libxdmcp6-dbg libxext6-dbg

           libxfixes3-dbg libxi6-dbg libxinerama1-dbg libxrandr2-dbg

           libxrender1-dbg libxtst6-dbg zlib1g-dbg"

 # Plugin lists needed for tests.

 plugin_list="flashplugin-installer"

 # Some package names have changed over time

 if apt-cache show ttf-mscorefonts-installer >/dev/null 2>&1; then

   dev_list="${dev_list} ttf-mscorefonts-installer"

 else

   dev_list="${dev_list} msttcorefonts"

 fi

 if apt-cache show libnspr4-dbg >/dev/null 2>&1; then

   dbg_list="${dbg_list} libnspr4-dbg libnss3-dbg"

   lib_list="${lib_list} libnspr4 libnss3"

 else

   dbg_list="${dbg_list} libnspr4-0d-dbg libnss3-1d-dbg"

   lib_list="${lib_list} libnspr4-0d libnss3-1d"

 fi

 if apt-cache show libjpeg-dev >/dev/null 2>&1; then

  dev_list="${dev_list} libjpeg-dev"

 else

  dev_list="${dev_list} libjpeg62-dev"

 fi

 # Some packages are only needed, if the distribution actually supports

 # installing them.

 if apt-cache show appmenu-gtk >/dev/null 2>&1; then

   lib_list="$lib_list appmenu-gtk"

 fi

 # Waits for the user to press 'Y' or 'N'. Either uppercase of lowercase is

 # accepted. Returns 0 for 'Y' and 1 for 'N'. If an optional parameter has

 # been provided to yes_no(), the function also accepts RETURN as a user input.

 # The parameter specifies the exit code that should be returned in that case.

 # The function will echo the user's selection followed by a newline character.

 # Users can abort the function by pressing CTRL-C. This will call "exit 1".

 yes_no() {

   if [ 0 -ne "${do_default-0}" ] ; then

     return $1

   fi

   local c

   while :; do

     c="$(trap 'stty echo -iuclc icanon 2>/dev/null' EXIT INT TERM QUIT

          stty -echo iuclc -icanon 2>/dev/null

          dd count=1 bs=1 2>/dev/null | od -An -tx1)"

     case "$c" in

       " 0a") if [ -n "$1" ]; then

                [ $1 -eq 0 ] && echo "Y" || echo "N"

                return $1

              fi

              ;;

       " 79") echo "Y"

              return 0

              ;;

       " 6e") echo "N"

              return 1

              ;;

       "")    echo "Aborted" >&2

              exit 1

              ;;

       *)     # The user pressed an unrecognized key. As we are not echoing

              # any incorrect user input, alert the user by ringing the bell.

              (tput bel) 2>/dev/null

              ;;

     esac

   done

 }

 if test "$do_inst_syms" = ""

 then

   echo "This script installs all tools and libraries needed to build Chromium."

   echo ""

   echo "For most of the libraries, it can also install debugging symbols, which"

   echo "will allow you to debug code in the system libraries. Most developers"

   echo "won't need these symbols."

   echo -n "Do you want me to install them for you (y/N) "

   if yes_no 1; then

     do_inst_syms=1

   fi

 fi

 if test "$do_inst_syms" = "1"; then

   echo "Installing debugging symbols."

 else

   echo "Skipping installation of debugging symbols."

   dbg_list=

 fi

 sudo apt-get update

 # We initially run "apt-get" with the --reinstall option and parse its output.

 # This way, we can find all the packages that need to be newly installed

 # without accidentally promoting any packages from "auto" to "manual".

 # We then re-run "apt-get" with just the list of missing packages.

 echo "Finding missing packages..."

 packages="${dev_list} ${lib_list} ${dbg_list} ${plugin_list}"

 # Intentionally leaving $packages unquoted so it's more readable.

 echo "Packages required: " $packages

 echo

 new_list_cmd="sudo apt-get install --reinstall $(echo $packages)"

 if new_list="$(yes n | LANG=C $new_list_cmd)"; then

   # We probably never hit this following line.

   echo "No missing packages, and the packages are up-to-date."

 elif [ $? -eq 1 ]; then

   # We expect apt-get to have exit status of 1.

   # This indicates that we cancelled the install with "yes n|".

   new_list=$(echo "$new_list" |

     sed -e '1,/The following NEW packages will be installed:/d;s/^  //;t;d')

   new_list=$(echo "$new_list" | sed 's/ *$//')

   if [ -z "$new_list" ] ; then

     echo "No missing packages, and the packages are up-to-date."

   else

     echo "Installing missing packages: $new_list."

     sudo apt-get install ${do_quietly-} ${new_list}

   fi

   echo

 else

   # An apt-get exit status of 100 indicates that a real error has occurred.

   # I am intentionally leaving out the '"'s around new_list_cmd,

   # as this makes it easier to cut and paste the output

   echo "The following command failed: " ${new_list_cmd}

   echo

   echo "It produces the following output:"

   yes n | $new_list_cmd || true

   echo

   echo "You will have to install the above packages yourself."

   echo

   exit 100

 fi

 # Install 32bit backwards compatibility support for 64bit systems

 if [ "$(uname -m)" = "x86_64" ]; then

   if test "$do_inst_lib32" = ""

   then

     echo "We no longer recommend that you use this script to install"

     echo "32bit libraries on a 64bit system. Instead, consider using"

     echo "the install-chroot.sh script to help you set up a 32bit"

     echo "environment for building and testing 32bit versions of Chrome."

     echo

     echo "If you nonetheless want to try installing 32bit libraries"

     echo "directly, you can do so by explicitly passing the --lib32"

     echo "option to install-build-deps.sh."

   fi

   if test "$do_inst_lib32" != "1"

   then

     echo "Exiting without installing any 32bit libraries."

     exit 0

   fi

   echo "N.B. the code for installing 32bit libraries on a 64bit"

   echo "     system is no longer actively maintained and might"

   echo "     not work with modern versions of Ubuntu or Debian."

   echo

   # Standard 32bit compatibility libraries

   echo "First, installing the limited existing 32-bit support..."

   cmp_list="ia32-libs lib32asound2-dev lib32stdc++6 lib32z1

             lib32z1-dev libc6-dev-i386 libc6-i386 g++-multilib"

   if [ -n "`apt-cache search lib32readline-gplv2-dev 2>/dev/null`" ]; then

     cmp_list="${cmp_list} lib32readline-gplv2-dev"

   else

     cmp_list="${cmp_list} lib32readline5-dev"

   fi

   sudo apt-get install ${do_quietly-} $cmp_list

   tmp=/tmp/install-32bit.$$

   trap 'rm -rf "${tmp}"' EXIT INT TERM QUIT

   mkdir -p "${tmp}/apt/lists/partial" "${tmp}/cache" "${tmp}/partial"

   touch "${tmp}/status"

   [ -r /etc/apt/apt.conf ] && cp /etc/apt/apt.conf "${tmp}/apt/"

   cat >>"${tmp}/apt/apt.conf" <<EOF

         Apt::Architecture "i386";

         Dir::Cache "${tmp}/cache";

         Dir::Cache::Archives "${tmp}/";

         Dir::State::Lists "${tmp}/apt/lists/";

         Dir::State::status "${tmp}/status";

 EOF

   # Download 32bit packages

   echo "Computing list of available 32bit packages..."

   sudo apt-get -c="${tmp}/apt/apt.conf" update

   echo "Downloading available 32bit packages..."

   sudo apt-get -c="${tmp}/apt/apt.conf" \

           --yes --download-only --force-yes --reinstall install \

           ${lib_list} ${dbg_list}

   # Open packages, remove everything that is not a library, move the

   # library to a lib32 directory and package everything as a *.deb file.

   echo "Repackaging and installing 32bit packages for use on 64bit systems..."

   for i in ${lib_list} ${dbg_list}; do

     orig="$(echo "${tmp}/${i}"_*_i386.deb)"

     compat="$(echo "${orig}" |

               sed -e 's,\(_[^_/]*_\)i386\(.deb\),-ia32\1amd64\2,')"

     rm -rf "${tmp}/staging"

     msg="$(fakeroot -u sh -exc '

       # Unpack 32bit Debian archive

       umask 022

       mkdir -p "'"${tmp}"'/staging/dpkg/DEBIAN"

       cd "'"${tmp}"'/staging"

       ar x "'${orig}'"

       tar zCfx dpkg data.tar.gz

       tar zCfx dpkg/DEBIAN control.tar.gz

       # Create a posix extended regular expression fragment that will

       # recognize the includes which have changed. Should be rare,

       # will almost always be empty.

       includes=`sed -n -e "s/^[0-9a-z]*  //g" \

                        -e "\,usr/include/,p" dpkg/DEBIAN/md5sums |

                   xargs -n 1 -I FILE /bin/sh -c \

                     "cmp -s dpkg/FILE /FILE || echo FILE" |

                   tr "\n" "|" |

                   sed -e "s,|$,,"`

       # If empty, set it to not match anything.

       test -z "$includes" && includes="^//"

       # Turn the conflicts into an extended RE for removal from the

       # Provides line.

       conflicts=`sed -n -e "/Conflicts/s/Conflicts: *//;T;s/, */|/g;p" \

                    dpkg/DEBIAN/control`

       # Rename package, change architecture, remove conflicts and dependencies

       sed -r -i                              \

           -e "/Package/s/$/-ia32/"           \

           -e "/Architecture/s/:.*$/: amd64/" \

           -e "/Depends/s/:.*/: ia32-libs/"   \

           -e "/Provides/s/($conflicts)(, *)?//g;T1;s/, *$//;:1"   \

           -e "/Recommends/d"                 \

           -e "/Conflicts/d"                  \

         dpkg/DEBIAN/control

       # Only keep files that live in "lib" directories or the includes

       # that have changed.

       sed -r -i                                                               \

           -e "/\/lib64\//d" -e "/\/.?bin\//d"                                 \

           -e "\,$includes,s,[ /]include/,&32/,g;s,include/32/,include32/,g"   \

           -e "s, lib/, lib32/,g"                                              \

           -e "s,/lib/,/lib32/,g"                                              \

           -e "t;d"                                                            \

           -e "\,^/usr/lib32/debug\(.*/lib32\),s,^/usr/lib32/debug,/usr/lib/debug," \

         dpkg/DEBIAN/md5sums

       # Re-run ldconfig after installation/removal

       { echo "#!/bin/sh"; echo "[ \"x\$1\" = xconfigure ]&&ldconfig||:"; } \

         >dpkg/DEBIAN/postinst

       { echo "#!/bin/sh"; echo "[ \"x\$1\" = xremove ]&&ldconfig||:"; } \

         >dpkg/DEBIAN/postrm

       chmod 755 dpkg/DEBIAN/postinst dpkg/DEBIAN/postrm

       # Remove any other control files

       find dpkg/DEBIAN -mindepth 1 "(" -name control -o -name md5sums -o \

                        -name postinst -o -name postrm ")" -o -print |

         xargs -r rm -rf

       # Remove any files/dirs that live outside of "lib" directories,

       # or are not in our list of changed includes.

       find dpkg -mindepth 1 -regextype posix-extended \

           "(" -name DEBIAN -o -name lib -o -regex "dpkg/($includes)" ")" \

           -prune -o -print | tac |

         xargs -r -n 1 sh -c "rm \$0 2>/dev/null || rmdir \$0 2>/dev/null || : "

       find dpkg -name lib64 -o -name bin -o -name "?bin" |

         tac | xargs -r rm -rf

       # Remove any symbolic links that were broken by the above steps.

       find -L dpkg -type l -print | tac | xargs -r rm -rf

       # Rename lib to lib32, but keep debug symbols in /usr/lib/debug/usr/lib32

       # That is where gdb looks for them.

       find dpkg -type d -o -path "*/lib/*" -print |

         xargs -r -n 1 sh -c "

           i=\$(echo \"\${0}\" |

                sed -e s,/lib/,/lib32/,g \

                -e s,/usr/lib32/debug\\\\\(.*/lib32\\\\\),/usr/lib/debug\\\\1,);

           mkdir -p \"\${i%/*}\";

           mv \"\${0}\" \"\${i}\""

       # Rename include to include32.

       [ -d "dpkg/usr/include" ] && mv "dpkg/usr/include" "dpkg/usr/include32"

       # Prune any empty directories

       find dpkg -type d | tac | xargs -r -n 1 rmdir 2>/dev/null || :

       # Create our own Debian package

       cd ..

       dpkg --build staging/dpkg .' 2>&1)"

     compat="$(eval echo $(echo "${compat}" |

                           sed -e 's,_[^_/]*_amd64.deb,_*_amd64.deb,'))"

     [ -r "${compat}" ] || {

       echo "${msg}" >&2

       echo "Failed to build new Debian archive!" >&2

       exit 1

     }

     msg="$(sudo dpkg -i "${compat}" 2>&1)" && {

         echo "Installed ${compat##*/}"

       } || {

         # echo "${msg}" >&2

         echo "Skipped ${compat##*/}"

       }

   done

   # Add symbolic links for developing 32bit code

   echo "Adding missing symbolic links, enabling 32bit code development..."

   for i in $(find /lib32 /usr/lib32 -maxdepth 1 -name \*.so.\* |

              sed -e 's/[.]so[.][0-9].*/.so/' |

              sort -u); do

     [ "x${i##*/}" = "xld-linux.so" ] && continue

     [ -r "$i" ] && continue

     j="$(ls "$i."* | sed -e 's/.*[.]so[.]\([^.]*\)$/\1/;t;d' |

          sort -n | tail -n 1)"

     [ -r "$i.$j" ] || continue

     sudo ln -s "${i##*/}.$j" "$i"

   done

 fi