build/install-build-deps.sh

   1 #!/bin/bash -e
   2
   3 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
   4 # Use of this source code is governed by a BSD-style license that can be
   5 # found in the LICENSE file.
   6
   7 # Script to install everything needed to build chromium (well, ideally, anyway)
   8 # See http://code.google.com/p/chromium/wiki/LinuxBuildInstructions
   9 # and http://code.google.com/p/chromium/wiki/LinuxBuild64Bit
  10
  11 usage() {
  12   echo "Usage: $0 [--options]"
  13   echo "Options:"
  14   echo "--[no-]syms: enable or disable installation of debugging symbols"
  15   echo "--[no-]lib32: enable or disable installation of 32 bit libraries"
  16   echo "--[no-]arm: enable or disable installation of arm cross toolchain"
  17   echo "--[no-]chromeos-fonts: enable or disable installation of Chrome OS"\
  18        "fonts"
  19   echo "--[no-]nacl: enable or disable installation of prerequisites for"\
  20        "building standalone NaCl and all its toolchains"
  21   echo "--no-prompt: silently select standard options/defaults"
  22   echo "--quick-check: quickly try to determine if dependencies are installed"
  23   echo "               (this avoids interactive prompts and sudo commands,"
  24   echo "               so might not be 100% accurate)"
  25   echo "--unsupported: attempt installation even on unsupported systems"
  26   echo "Script will prompt interactively if options not given."
  27   exit 1
  28 }
  29
  30 # Checks whether a particular package is available in the repos.
  31 # USAGE: $ package_exists <package name>
  32 package_exists() {
  33   apt-cache pkgnames | grep -x "$1" > /dev/null 2>&1
  34 }
  35
  36 # These default to on because (some) bots need them and it keeps things
  37 # simple for the bot setup if all bots just run the script in its default
  38 # mode.  Developers who don't want stuff they don't need installed on their
  39 # own workstations can pass --no-arm --no-nacl when running the script.
  40 do_inst_arm=1
  41 do_inst_nacl=1
  42
  43 while test "$1" != ""
  44 do
  45   case "$1" in
  46   --syms)                   do_inst_syms=1;;
  47   --no-syms)                do_inst_syms=0;;
  48   --lib32)                  do_inst_lib32=1;;
  49   --no-lib32)               do_inst_lib32=0;;
  50   --arm)                    do_inst_arm=1;;
  51   --no-arm)                 do_inst_arm=0;;
  52   --chromeos-fonts)         do_inst_chromeos_fonts=1;;
  53   --no-chromeos-fonts)      do_inst_chromeos_fonts=0;;
  54   --nacl)                   do_inst_nacl=1;;
  55   --no-nacl)                do_inst_nacl=0;;
  56   --no-prompt)              do_default=1
  57                             do_quietly="-qq --assume-yes"
  58     ;;
  59   --quick-check)            do_quick_check=1;;
  60   --unsupported)            do_unsupported=1;;
  61   *) usage;;
  62   esac
  63   shift
  64 done
  65
  66 # Check for lsb_release command in $PATH
  67 if ! which lsb_release > /dev/null; then
  68   echo "ERROR: lsb_release not found in \$PATH" >&2
  69   exit 1;
  70 fi
  71
  72 lsb_release=$(lsb_release --codename --short)
  73 ubuntu_codenames="(precise|quantal|raring|saucy|trusty)"
  74 if [ 0 -eq "${do_unsupported-0}" ] && [ 0 -eq "${do_quick_check-0}" ] ; then
  75   if [[ ! $lsb_release =~ $ubuntu_codenames ]]; then
  76     echo "ERROR: Only Ubuntu 12.04 (precise) through 14.04 (trusty) are"\
  77         "currently supported" >&2
  78     exit 1
  79   fi
  80
  81   if ! uname -m | egrep -q "i686|x86_64"; then
  82     echo "Only x86 architectures are currently supported" >&2
  83     exit
  84   fi
  85 fi
  86
  87 if [ "x$(id -u)" != x0 ] && [ 0 -eq "${do_quick_check-0}" ]; then
  88   echo "Running as non-root user."
  89   echo "You might have to enter your password one or more times for 'sudo'."
  90   echo
  91 fi
  92
  93 # Packages needed for chromeos only
  94 chromeos_dev_list="libbluetooth-dev"
  95
  96 # Packages needed for development
  97 dev_list="apache2.2-bin bison curl dpkg-dev elfutils devscripts fakeroot flex
  98           fonts-thai-tlwg g++ git-core gperf language-pack-da language-pack-fr
  99           language-pack-he language-pack-zh-hant libapache2-mod-php5
 100           libasound2-dev libbrlapi-dev libbz2-dev libcairo2-dev libcap-dev
 101           libcups2-dev libcurl4-gnutls-dev libdrm-dev libelf-dev libexif-dev
 102           libgconf2-dev libgl1-mesa-dev libglib2.0-dev libglu1-mesa-dev
 103           libgnome-keyring-dev libgtk2.0-dev libkrb5-dev libnspr4-dev
 104           libnss3-dev libpam0g-dev libpci-dev libpulse-dev libsctp-dev
 105           libspeechd-dev libsqlite3-dev libssl-dev libudev-dev libwww-perl
 106           libxslt1-dev libxss-dev libxt-dev libxtst-dev mesa-common-dev openbox
 107           patch perl php5-cgi pkg-config python python-cherrypy3 python-dev
 108           python-psutil rpm ruby subversion ttf-dejavu-core ttf-indic-fonts
 109           ttf-kochi-gothic ttf-kochi-mincho wdiff xfonts-mathml zip
 110           $chromeos_dev_list"
 111
 112 # 64-bit systems need a minimum set of 32-bit compat packages for the pre-built
 113 # NaCl binaries. These are always needed, regardless of whether or not we want
 114 # the full 32-bit "cross-compile" support (--lib32).
 115 if file /sbin/init | grep -q 'ELF 64-bit'; then
 116   dev_list="${dev_list} libc6-i386 lib32gcc1 lib32stdc++6"
 117 fi
 118
 119 # Run-time libraries required by chromeos only
 120 chromeos_lib_list="libpulse0 libbz2-1.0"
 121
 122 # Full list of required run-time libraries
 123 lib_list="libatk1.0-0 libc6 libasound2 libcairo2 libcap2 libcups2 libexpat1
 124           libexif12 libfontconfig1 libfreetype6 libglib2.0-0 libgnome-keyring0
 125           libgtk2.0-0 libpam0g libpango1.0-0 libpci3 libpcre3 libpixman-1-0
 126           libpng12-0 libspeechd2 libstdc++6 libsqlite3-0 libx11-6
 127           libxau6 libxcb1 libxcomposite1 libxcursor1 libxdamage1 libxdmcp6
 128           libxext6 libxfixes3 libxi6 libxinerama1 libxrandr2 libxrender1
 129           libxtst6 zlib1g $chromeos_lib_list"
 130
 131 # Debugging symbols for all of the run-time libraries
 132 dbg_list="libatk1.0-dbg libc6-dbg libcairo2-dbg libfontconfig1-dbg
 133           libglib2.0-0-dbg libgtk2.0-0-dbg libpango1.0-0-dbg libpcre3-dbg
 134           libpixman-1-0-dbg libsqlite3-0-dbg libx11-6-dbg libxau6-dbg
 135           libxcb1-dbg libxcomposite1-dbg libxcursor1-dbg libxdamage1-dbg
 136           libxdmcp6-dbg libxext6-dbg libxfixes3-dbg libxi6-dbg libxinerama1-dbg
 137           libxrandr2-dbg libxrender1-dbg libxtst6-dbg zlib1g-dbg
 138           libstdc++6-4.6-dbg"
 139
 140 # arm cross toolchain packages needed to build chrome on armhf
 141 arm_list="libc6-dev-armhf-cross
 142           linux-libc-dev-armhf-cross
 143           g++-arm-linux-gnueabihf"
 144
 145 # Packages to build NaCl, its toolchains, and its ports.
 146 nacl_list="autoconf bison cmake g++-mingw-w64-i686 gawk lib32z1-dev
 147            libasound2:i386 libcap2:i386 libelf-dev:i386 libexif12:i386
 148            libfontconfig1:i386 libgconf-2-4:i386 libglib2.0-0:i386 libgpm2:i386
 149            libgtk2.0-0:i386 libncurses5:i386 libnss3:i386 libpango1.0-0:i386
 150            libssl0.9.8:i386 libtinfo-dev libtinfo-dev:i386 libtool
 151            libxcomposite1:i386 libxcursor1:i386 libxdamage1:i386 libxi6:i386
 152            libxrandr2:i386 libxss1:i386 libxtst6:i386 texinfo xvfb"
 153
 154 # Find the proper version of libgbm-dev. We can't just install libgbm-dev as
 155 # it depends on mesa, and only one version of mesa can exists on the system.
 156 # Hence we must match the same version or this entire script will fail.
 157 mesa_variant=""
 158 for variant in "-lts-quantal" "-lts-raring" "-lts-saucy"; do
 159   if $(dpkg-query -Wf'${Status}' libgl1-mesa-glx${variant} | \
 160        grep -q " ok installed"); then
 161     mesa_variant="${variant}"
 162   fi
 163 done
 164 dev_list="${dev_list} libgbm-dev${mesa_variant}"
 165 nacl_list="${nacl_list} libgl1-mesa-glx${mesa_variant}:i386"
 166
 167 # Some package names have changed over time
 168 if package_exists ttf-mscorefonts-installer; then
 169   dev_list="${dev_list} ttf-mscorefonts-installer"
 170 else
 171   dev_list="${dev_list} msttcorefonts"
 172 fi
 173 if package_exists libnspr4-dbg; then
 174   dbg_list="${dbg_list} libnspr4-dbg libnss3-dbg"
 175   lib_list="${lib_list} libnspr4 libnss3"
 176 else
 177   dbg_list="${dbg_list} libnspr4-0d-dbg libnss3-1d-dbg"
 178   lib_list="${lib_list} libnspr4-0d libnss3-1d"
 179 fi
 180 if package_exists libjpeg-dev; then
 181   dev_list="${dev_list} libjpeg-dev"
 182 else
 183   dev_list="${dev_list} libjpeg62-dev"
 184 fi
 185 if package_exists libudev1; then
 186   dev_list="${dev_list} libudev1"
 187   nacl_list="${nacl_list} libudev1:i386"
 188 else
 189   dev_list="${dev_list} libudev0"
 190   nacl_list="${nacl_list} libudev0:i386"
 191 fi
 192 if package_exists libbrlapi0.6; then
 193   dev_list="${dev_list} libbrlapi0.6"
 194 else
 195   dev_list="${dev_list} libbrlapi0.5"
 196 fi
 197
 198
 199 # Some packages are only needed if the distribution actually supports
 200 # installing them.
 201 if package_exists appmenu-gtk; then
 202   lib_list="$lib_list appmenu-gtk"
 203 fi
 204
 205 # Waits for the user to press 'Y' or 'N'. Either uppercase of lowercase is
 206 # accepted. Returns 0 for 'Y' and 1 for 'N'. If an optional parameter has
 207 # been provided to yes_no(), the function also accepts RETURN as a user input.
 208 # The parameter specifies the exit code that should be returned in that case.
 209 # The function will echo the user's selection followed by a newline character.
 210 # Users can abort the function by pressing CTRL-C. This will call "exit 1".
 211 yes_no() {
 212   if [ 0 -ne "${do_default-0}" ] ; then
 213     [ $1 -eq 0 ] && echo "Y" || echo "N"
 214     return $1
 215   fi
 216   local c
 217   while :; do
 218     c="$(trap 'stty echo -iuclc icanon 2>/dev/null' EXIT INT TERM QUIT
 219          stty -echo iuclc -icanon 2>/dev/null
 220          dd count=1 bs=1 2>/dev/null | od -An -tx1)"
 221     case "$c" in
 222       " 0a") if [ -n "$1" ]; then
 223                [ $1 -eq 0 ] && echo "Y" || echo "N"
 224                return $1
 225              fi
 226              ;;
 227       " 79") echo "Y"
 228              return 0
 229              ;;
 230       " 6e") echo "N"
 231              return 1
 232              ;;
 233       "")    echo "Aborted" >&2
 234              exit 1
 235              ;;
 236       *)     # The user pressed an unrecognized key. As we are not echoing
 237              # any incorrect user input, alert the user by ringing the bell.
 238              (tput bel) 2>/dev/null
 239              ;;
 240     esac
 241   done
 242 }
 243
 244 if test "$do_inst_syms" = "" && test 0 -eq ${do_quick_check-0}
 245 then
 246   echo "This script installs all tools and libraries needed to build Chromium."
 247   echo ""
 248   echo "For most of the libraries, it can also install debugging symbols, which"
 249   echo "will allow you to debug code in the system libraries. Most developers"
 250   echo "won't need these symbols."
 251   echo -n "Do you want me to install them for you (y/N) "
 252   if yes_no 1; then
 253     do_inst_syms=1
 254   fi
 255 fi
 256 if test "$do_inst_syms" = "1"; then
 257   echo "Including debugging symbols."
 258 else
 259   echo "Skipping debugging symbols."
 260   dbg_list=
 261 fi
 262
 263 # When cross building for arm on 64-bit systems the host binaries
 264 # that are part of v8 need to be compiled with -m32 which means
 265 # that basic multilib support is needed.
 266 if file /sbin/init | grep -q 'ELF 64-bit'; then
 267   if [ "$lsb_release" = "trusty" ]; then
 268     # gcc-multilib conflicts with the arm cross compiler in trusty but
 269     # g++-4.8-multilib gives us the 32-bit support that we need.
 270     arm_list="$arm_list g++-4.8-multilib"
 271   else
 272     arm_list="$arm_list g++-multilib"
 273   fi
 274 fi
 275
 276 if test "$do_inst_arm" = "1" ; then
 277   echo "Including ARM cross toolchain."
 278 else
 279   echo "Skipping ARM cross toolchain."
 280   arm_list=
 281 fi
 282
 283 if test "$do_inst_nacl" = "1"; then
 284   echo "Including NaCl, NaCl toolchain, NaCl ports dependencies."
 285 else
 286   echo "Skipping NaCl, NaCl toolchain, NaCl ports dependencies."
 287   nacl_list=
 288 fi
 289
 290 packages="$(
 291   echo "${dev_list} ${lib_list} ${dbg_list} ${arm_list} ${nacl_list}" |
 292   tr " " "\n" | sort -u | tr "\n" " "
 293 )"
 294
 295 if [ 1 -eq "${do_quick_check-0}" ] ; then
 296   failed_check="$(dpkg-query -W -f '${PackageSpec}:${Status}\n' \
 297     ${packages} 2>&1 | grep -v "ok installed" || :)"
 298   if [ -n "${failed_check}" ]; then
 299     echo
 300     nomatch="$(echo "${failed_check}" | \
 301       sed -e "s/^No packages found matching \(.*\).$/\1/;t;d")"
 302     missing="$(echo "${failed_check}" | \
 303       sed -e "/^No packages found matching/d;s/^\(.*\):.*$/\1/")"
 304     if [ "$nomatch" ]; then
 305       # Distinguish between packages that actually aren't available to the
 306       # system (i.e. not in any repo) and packages that just aren't known to
 307       # dpkg (i.e. managed by apt).
 308       unknown=""
 309       for p in ${nomatch}; do
 310         if apt-cache show ${p} > /dev/null 2>&1; then
 311           missing="${p}\n${missing}"
 312         else
 313           unknown="${p}\n${unknown}"
 314         fi
 315       done
 316       if [ -n "${unknown}" ]; then
 317         echo "WARNING: The following packages are unknown to your system"
 318         echo "(maybe missing a repo or need to 'sudo apt-get update'):"
 319         echo -e "${unknown}" | sed -e "s/^/  /"
 320       fi
 321     fi
 322     if [ -n "${missing}" ]; then
 323       echo "WARNING: The following packages are not installed:"
 324       echo -e "${missing}" | sed -e "s/^/  /"
 325     fi
 326     exit 1
 327   fi
 328   exit 0
 329 fi
 330
 331 sudo apt-get update
 332
 333 # We initially run "apt-get" with the --reinstall option and parse its output.
 334 # This way, we can find all the packages that need to be newly installed
 335 # without accidentally promoting any packages from "auto" to "manual".
 336 # We then re-run "apt-get" with just the list of missing packages.
 337 echo "Finding missing packages..."
 338 # Intentionally leaving $packages unquoted so it's more readable.
 339 echo "Packages required: " $packages
 340 echo
 341 new_list_cmd="sudo apt-get install --reinstall $(echo $packages)"
 342 if new_list="$(yes n | LANGUAGE=en LANG=C $new_list_cmd)"; then
 343   # We probably never hit this following line.
 344   echo "No missing packages, and the packages are up-to-date."
 345 elif [ $? -eq 1 ]; then
 346   # We expect apt-get to have exit status of 1.
 347   # This indicates that we cancelled the install with "yes n|".
 348   new_list=$(echo "$new_list" |
 349     sed -e '1,/The following NEW packages will be installed:/d;s/^  //;t;d')
 350   new_list=$(echo "$new_list" | sed 's/ *$//')
 351   if [ -z "$new_list" ] ; then
 352     echo "No missing packages, and the packages are up-to-date."
 353   else
 354     echo "Installing missing packages: $new_list."
 355     sudo apt-get install ${do_quietly-} ${new_list}
 356   fi
 357   echo
 358 else
 359   # An apt-get exit status of 100 indicates that a real error has occurred.
 360
 361   # I am intentionally leaving out the '"'s around new_list_cmd,
 362   # as this makes it easier to cut and paste the output
 363   echo "The following command failed: " ${new_list_cmd}
 364   echo
 365   echo "It produces the following output:"
 366   yes n | $new_list_cmd || true
 367   echo
 368   echo "You will have to install the above packages yourself."
 369   echo
 370   exit 100
 371 fi
 372
 373 # Install the Chrome OS default fonts. This must go after running
 374 # apt-get, since install-chromeos-fonts depends on curl.
 375 if test "$do_inst_chromeos_fonts" != "0"; then
 376   echo
 377   echo "Installing Chrome OS fonts."
 378   dir=`echo $0 | sed -r -e 's/\/[^/]+$//'`
 379   if ! sudo $dir/linux/install-chromeos-fonts.py; then
 380     echo "ERROR: The installation of the Chrome OS default fonts failed."
 381     if [ `stat -f -c %T $dir` == "nfs" ]; then
 382       echo "The reason is that your repo is installed on a remote file system."
 383     else
 384       echo "This is expected if your repo is installed on a remote file system."
 385     fi
 386     echo "It is recommended to install your repo on a local file system."
 387     echo "You can skip the installation of the Chrome OS default founts with"
 388     echo "the command line option: --no-chromeos-fonts."
 389     exit 1
 390   fi
 391 else
 392   echo "Skipping installation of Chrome OS fonts."
 393 fi
 394
 395 if test "$do_inst_nacl" = "1"; then
 396   echo "Installing symbolic links for NaCl."
 397   if [ ! -r /usr/lib/i386-linux-gnu/libcrypto.so ]; then
 398     sudo ln -fs libcrypto.so.0.9.8 /usr/lib/i386-linux-gnu/libcrypto.so
 399   fi
 400   if [ ! -r /usr/lib/i386-linux-gnu/libssl.so ]; then
 401     sudo ln -fs libssl.so.0.9.8 /usr/lib/i386-linux-gnu/libssl.so
 402   fi
 403 else
 404   echo "Skipping symbolic links for NaCl."
 405 fi
 406
 407 # Install 32bit backwards compatibility support for 64bit systems
 408 if file /sbin/init | grep -q 'ELF 64-bit'; then
 409   if test "$do_inst_lib32" != "1"
 410   then
 411     echo "NOTE: If you were expecting the option to install 32bit libs,"
 412     echo "please run with the --lib32 flag."
 413     echo
 414     echo "Installation complete."
 415     exit 0
 416   else
 417     # This conditional statement has been added to deprecate and eventually
 418     # remove support for 32bit libraries on 64bit systems. But for the time
 419     # being, we still have to support a few legacy systems (e.g. bots), where
 420     # this feature is needed.
 421     # We only even give the user the option to install these libraries, if
 422     # they explicitly requested doing so by setting the --lib32 command line
 423     # flag.
 424     # And even then, we interactively ask them one more time whether they are
 425     # absolutely sure.
 426     # In order for that to work, we must reset the ${do_inst_lib32} variable.
 427     # There are other ways to achieve the same goal. But resetting the
 428     # variable is the best way to document the intended behavior -- and to
 429     # allow us to gradually deprecate and then remove the obsolete code.
 430     if test "${do_default-0}" -ne 1; then
 431       do_inst_lib32=
 432     fi
 433   fi
 434
 435   echo "WARNING"
 436   echo
 437   echo "We no longer recommend that you use this script to install"
 438   echo "32bit libraries on a 64bit system. Instead, consider using the"
 439   echo "install-chroot.sh script to help you set up a 32bit environment"
 440   echo "for building and testing 32bit versions of Chrome."
 441   echo
 442   echo "The code for installing 32bit libraries on a 64bit system is"
 443   echo "unmaintained and might not work with modern versions of Ubuntu"
 444   echo "or Debian."
 445   if test "$do_inst_lib32" != "" ; then
 446     echo
 447     echo -n "Are you sure you want to proceed (y/N) "
 448     if yes_no 1; then
 449       do_inst_lib32=1
 450     fi
 451   fi
 452   if test "$do_inst_lib32" != "1"
 453   then
 454     exit 0
 455   fi
 456
 457   # Standard 32bit compatibility libraries
 458   echo "First, installing the limited existing 32-bit support..."
 459   cmp_list="ia32-libs lib32asound2-dev lib32stdc++6 lib32z1
 460             lib32z1-dev libc6-dev-i386 libc6-i386 g++-multilib"
 461   if [ -n "`apt-cache search lib32readline-gplv2-dev 2>/dev/null`" ]; then
 462     cmp_list="${cmp_list} lib32readline-gplv2-dev"
 463   else
 464     cmp_list="${cmp_list} lib32readline5-dev"
 465   fi
 466   sudo apt-get install ${do_quietly-} $cmp_list
 467
 468   tmp=/tmp/install-32bit.$$
 469   trap 'rm -rf "${tmp}"' EXIT INT TERM QUIT
 470   mkdir -p "${tmp}/apt/lists/partial" "${tmp}/cache" "${tmp}/partial"
 471   touch "${tmp}/status"
 472
 473   [ -r /etc/apt/apt.conf ] && cp /etc/apt/apt.conf "${tmp}/apt/"
 474   cat >>"${tmp}/apt/apt.conf" <<EOF
 475         Apt::Architecture "i386";
 476         Dir::Cache "${tmp}/cache";
 477         Dir::Cache::Archives "${tmp}/";
 478         Dir::State::Lists "${tmp}/apt/lists/";
 479         Dir::State::status "${tmp}/status";
 480 EOF
 481
 482   # Download 32bit packages
 483   echo "Computing list of available 32bit packages..."
 484   sudo apt-get -c="${tmp}/apt/apt.conf" update
 485
 486   echo "Downloading available 32bit packages..."
 487   sudo apt-get -c="${tmp}/apt/apt.conf" \
 488           --yes --download-only --force-yes --reinstall install \
 489           ${lib_list} ${dbg_list}
 490
 491   # Open packages, remove everything that is not a library, move the
 492   # library to a lib32 directory and package everything as a *.deb file.
 493   echo "Repackaging and installing 32bit packages for use on 64bit systems..."
 494   for i in ${lib_list} ${dbg_list}; do
 495     orig="$(echo "${tmp}/${i}"_*_i386.deb)"
 496     compat="$(echo "${orig}" |
 497               sed -e 's,\(_[^_/]*_\)i386\(.deb\),-ia32\1amd64\2,')"
 498     rm -rf "${tmp}/staging"
 499     msg="$(fakeroot -u sh -exc '
 500       # Unpack 32bit Debian archive
 501       umask 022
 502       mkdir -p "'"${tmp}"'/staging/dpkg/DEBIAN"
 503       cd "'"${tmp}"'/staging"
 504       ar x "'${orig}'"
 505       tar Cfx dpkg data.tar*
 506       tar zCfx dpkg/DEBIAN control.tar.gz
 507
 508       # Create a posix extended regular expression fragment that will
 509       # recognize the includes which have changed. Should be rare,
 510       # will almost always be empty.
 511       includes=`sed -n -e "s/^[0-9a-z]*  //g" \
 512                        -e "\,usr/include/,p" dpkg/DEBIAN/md5sums |
 513                   xargs -n 1 -I FILE /bin/sh -c \
 514                     "cmp -s dpkg/FILE /FILE || echo FILE" |
 515                   tr "\n" "|" |
 516                   sed -e "s,|$,,"`
 517
 518       # If empty, set it to not match anything.
 519       test -z "$includes" && includes="^//"
 520
 521       # Turn the conflicts into an extended RE for removal from the
 522       # Provides line.
 523       conflicts=`sed -n -e "/Conflicts/s/Conflicts: *//;T;s/, */|/g;p" \
 524                    dpkg/DEBIAN/control`
 525
 526       # Rename package, change architecture, remove conflicts and dependencies
 527       sed -r -i                              \
 528           -e "/Package/s/$/-ia32/"           \
 529           -e "/Architecture/s/:.*$/: amd64/" \
 530           -e "/Depends/s/:.*/: ia32-libs/"   \
 531           -e "/Provides/s/($conflicts)(, *)?//g;T1;s/, *$//;:1"   \
 532           -e "/Recommends/d"                 \
 533           -e "/Conflicts/d"                  \
 534         dpkg/DEBIAN/control
 535
 536       # Only keep files that live in "lib" directories or the includes
 537       # that have changed.
 538       sed -r -i                                                               \
 539           -e "/\/lib64\//d" -e "/\/.?bin\//d"                                 \
 540           -e "\,$includes,s,[ /]include/,&32/,g;s,include/32/,include32/,g"   \
 541           -e "s, lib/, lib32/,g"                                              \
 542           -e "s,/lib/,/lib32/,g"                                              \
 543           -e "t;d"                                                            \
 544           -e "\,^/usr/lib32/debug\(.*/lib32\),s,^/usr/lib32/debug,/usr/lib/debug," \
 545         dpkg/DEBIAN/md5sums
 546
 547       # Re-run ldconfig after installation/removal
 548       { echo "#!/bin/sh"; echo "[ \"x\$1\" = xconfigure ]&&ldconfig||:"; } \
 549         >dpkg/DEBIAN/postinst
 550       { echo "#!/bin/sh"; echo "[ \"x\$1\" = xremove ]&&ldconfig||:"; } \
 551         >dpkg/DEBIAN/postrm
 552       chmod 755 dpkg/DEBIAN/postinst dpkg/DEBIAN/postrm
 553
 554       # Remove any other control files
 555       find dpkg/DEBIAN -mindepth 1 "(" -name control -o -name md5sums -o \
 556                        -name postinst -o -name postrm ")" -o -print |
 557         xargs -r rm -rf
 558
 559       # Remove any files/dirs that live outside of "lib" directories,
 560       # or are not in our list of changed includes.
 561       find dpkg -mindepth 1 -regextype posix-extended \
 562           "(" -name DEBIAN -o -name lib -o -regex "dpkg/($includes)" ")" \
 563           -prune -o -print | tac |
 564         xargs -r -n 1 sh -c "rm \$0 2>/dev/null || rmdir \$0 2>/dev/null || : "
 565       find dpkg -name lib64 -o -name bin -o -name "?bin" |
 566         tac | xargs -r rm -rf
 567
 568       # Remove any symbolic links that were broken by the above steps.
 569       find -L dpkg -type l -print | tac | xargs -r rm -rf
 570
 571       # Rename lib to lib32, but keep debug symbols in /usr/lib/debug/usr/lib32
 572       # That is where gdb looks for them.
 573       find dpkg -type d -o -path "*/lib/*" -print |
 574         xargs -r -n 1 sh -c "
 575           i=\$(echo \"\${0}\" |
 576                sed -e s,/lib/,/lib32/,g \
 577                -e s,/usr/lib32/debug\\\\\(.*/lib32\\\\\),/usr/lib/debug\\\\1,);
 578           mkdir -p \"\${i%/*}\";
 579           mv \"\${0}\" \"\${i}\""
 580
 581       # Rename include to include32.
 582       [ -d "dpkg/usr/include" ] && mv "dpkg/usr/include" "dpkg/usr/include32"
 583
 584       # Prune any empty directories
 585       find dpkg -type d | tac | xargs -r -n 1 rmdir 2>/dev/null || :
 586
 587       # Create our own Debian package
 588       cd ..
 589       dpkg --build staging/dpkg .' 2>&1)"
 590     compat="$(eval echo $(echo "${compat}" |
 591                           sed -e 's,_[^_/]*_amd64.deb,_*_amd64.deb,'))"
 592     [ -r "${compat}" ] || {
 593       echo "${msg}" >&2
 594       echo "Failed to build new Debian archive!" >&2
 595       exit 1
 596     }
 597
 598     msg="$(sudo dpkg -i "${compat}" 2>&1)" && {
 599         echo "Installed ${compat##*/}"
 600       } || {
 601         # echo "${msg}" >&2
 602         echo "Skipped ${compat##*/}"
 603       }
 604   done
 605
 606   # Add symbolic links for developing 32bit code
 607   echo "Adding missing symbolic links, enabling 32bit code development..."
 608   for i in $(find /lib32 /usr/lib32 -maxdepth 1 -name \*.so.\* |
 609              sed -e 's/[.]so[.][0-9].*/.so/' |
 610              sort -u); do
 611     [ "x${i##*/}" = "xld-linux.so" ] && continue
 612     [ -r "$i" ] && continue
 613     j="$(ls "$i."* | sed -e 's/.*[.]so[.]\([^.]*\)$/\1/;t;d' |
 614          sort -n | tail -n 1)"
 615     [ -r "$i.$j" ] || continue
 616     sudo ln -s "${i##*/}.$j" "$i"
 617   done
 618 fi