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 libav-tools libbz2-dev libcairo2-dev
 101           libcap-dev libcups2-dev libcurl4-gnutls-dev libdrm-dev libelf-dev
 102           libexif-dev libgconf2-dev libgl1-mesa-dev libglib2.0-dev
 103           libglu1-mesa-dev libgnome-keyring-dev libgtk2.0-dev libkrb5-dev
 104           libnspr4-dev libnss3-dev libpam0g-dev libpci-dev libpulse-dev
 105           libsctp-dev libspeechd-dev libsqlite3-dev libssl-dev libudev-dev
 106           libwww-perl libxslt1-dev libxss-dev libxt-dev libxtst-dev
 107           mesa-common-dev openbox patch perl php5-cgi pkg-config python
 108           python-cherrypy3 python-dev python-psutil rpm ruby subversion
 109           ttf-dejavu-core ttf-indic-fonts ttf-kochi-gothic ttf-kochi-mincho
 110           wdiff xfonts-mathml zip $chromeos_dev_list"
 111
 112 # 64-bit systems need a minimum set of 32-bit compat packages for the pre-built
 113 # NaCl binaries. These are always needed, regardless of whether or not we want
 114 # the full 32-bit "cross-compile" support (--lib32).
 115 if file /sbin/init | grep -q 'ELF 64-bit'; then
 116   dev_list="${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 lib32ncurses5-dev
 150            libnss3:i386 libpango1.0-0:i386 xsltproc ant
 151            libssl0.9.8:i386 libtinfo-dev libtinfo-dev:i386 libtool
 152            libxcomposite1:i386 libxcursor1:i386 libxdamage1:i386 libxi6:i386
 153            libxrandr2:i386 libxss1:i386 libxtst6:i386 texinfo xvfb"
 154
 155 # Find the proper version of libgbm-dev. We can't just install libgbm-dev as
 156 # it depends on mesa, and only one version of mesa can exists on the system.
 157 # Hence we must match the same version or this entire script will fail.
 158 mesa_variant=""
 159 for variant in "-lts-quantal" "-lts-raring" "-lts-saucy"; do
 160   if $(dpkg-query -Wf'${Status}' libgl1-mesa-glx${variant} | \
 161        grep -q " ok installed"); then
 162     mesa_variant="${variant}"
 163   fi
 164 done
 165 dev_list="${dev_list} libgbm-dev${mesa_variant}
 166           libgles2-mesa-dev${mesa_variant}"
 167 nacl_list="${nacl_list} libgl1-mesa-glx${mesa_variant}:i386"
 168
 169 # Some package names have changed over time
 170 if package_exists ttf-mscorefonts-installer; then
 171   dev_list="${dev_list} ttf-mscorefonts-installer"
 172 else
 173   dev_list="${dev_list} msttcorefonts"
 174 fi
 175 if package_exists libnspr4-dbg; then
 176   dbg_list="${dbg_list} libnspr4-dbg libnss3-dbg"
 177   lib_list="${lib_list} libnspr4 libnss3"
 178 else
 179   dbg_list="${dbg_list} libnspr4-0d-dbg libnss3-1d-dbg"
 180   lib_list="${lib_list} libnspr4-0d libnss3-1d"
 181 fi
 182 if package_exists libjpeg-dev; then
 183   dev_list="${dev_list} libjpeg-dev"
 184 else
 185   dev_list="${dev_list} libjpeg62-dev"
 186 fi
 187 if package_exists libudev1; then
 188   dev_list="${dev_list} libudev1"
 189   nacl_list="${nacl_list} libudev1:i386"
 190 else
 191   dev_list="${dev_list} libudev0"
 192   nacl_list="${nacl_list} libudev0:i386"
 193 fi
 194 if package_exists libbrlapi0.6; then
 195   dev_list="${dev_list} libbrlapi0.6"
 196 else
 197   dev_list="${dev_list} libbrlapi0.5"
 198 fi
 199
 200
 201 # Some packages are only needed if the distribution actually supports
 202 # installing them.
 203 if package_exists appmenu-gtk; then
 204   lib_list="$lib_list appmenu-gtk"
 205 fi
 206
 207 # Waits for the user to press 'Y' or 'N'. Either uppercase of lowercase is
 208 # accepted. Returns 0 for 'Y' and 1 for 'N'. If an optional parameter has
 209 # been provided to yes_no(), the function also accepts RETURN as a user input.
 210 # The parameter specifies the exit code that should be returned in that case.
 211 # The function will echo the user's selection followed by a newline character.
 212 # Users can abort the function by pressing CTRL-C. This will call "exit 1".
 213 yes_no() {
 214   if [ 0 -ne "${do_default-0}" ] ; then
 215     [ $1 -eq 0 ] && echo "Y" || echo "N"
 216     return $1
 217   fi
 218   local c
 219   while :; do
 220     c="$(trap 'stty echo -iuclc icanon 2>/dev/null' EXIT INT TERM QUIT
 221          stty -echo iuclc -icanon 2>/dev/null
 222          dd count=1 bs=1 2>/dev/null | od -An -tx1)"
 223     case "$c" in
 224       " 0a") if [ -n "$1" ]; then
 225                [ $1 -eq 0 ] && echo "Y" || echo "N"
 226                return $1
 227              fi
 228              ;;
 229       " 79") echo "Y"
 230              return 0
 231              ;;
 232       " 6e") echo "N"
 233              return 1
 234              ;;
 235       "")    echo "Aborted" >&2
 236              exit 1
 237              ;;
 238       *)     # The user pressed an unrecognized key. As we are not echoing
 239              # any incorrect user input, alert the user by ringing the bell.
 240              (tput bel) 2>/dev/null
 241              ;;
 242     esac
 243   done
 244 }
 245
 246 if test "$do_inst_syms" = "" && test 0 -eq ${do_quick_check-0}
 247 then
 248   echo "This script installs all tools and libraries needed to build Chromium."
 249   echo ""
 250   echo "For most of the libraries, it can also install debugging symbols, which"
 251   echo "will allow you to debug code in the system libraries. Most developers"
 252   echo "won't need these symbols."
 253   echo -n "Do you want me to install them for you (y/N) "
 254   if yes_no 1; then
 255     do_inst_syms=1
 256   fi
 257 fi
 258 if test "$do_inst_syms" = "1"; then
 259   echo "Including debugging symbols."
 260 else
 261   echo "Skipping debugging symbols."
 262   dbg_list=
 263 fi
 264
 265 # When cross building for arm on 64-bit systems the host binaries
 266 # that are part of v8 need to be compiled with -m32 which means
 267 # that basic multilib support is needed.
 268 if file /sbin/init | grep -q 'ELF 64-bit'; then
 269   if [ "$lsb_release" = "trusty" ]; then
 270     # gcc-multilib conflicts with the arm cross compiler in trusty but
 271     # g++-4.8-multilib gives us the 32-bit support that we need.
 272     arm_list="$arm_list g++-4.8-multilib"
 273   else
 274     arm_list="$arm_list g++-multilib"
 275   fi
 276 fi
 277
 278 if test "$do_inst_arm" = "1" ; then
 279   echo "Including ARM cross toolchain."
 280 else
 281   echo "Skipping ARM cross toolchain."
 282   arm_list=
 283 fi
 284
 285 if test "$do_inst_nacl" = "1"; then
 286   echo "Including NaCl, NaCl toolchain, NaCl ports dependencies."
 287 else
 288   echo "Skipping NaCl, NaCl toolchain, NaCl ports dependencies."
 289   nacl_list=
 290 fi
 291
 292 packages="$(
 293   echo "${dev_list} ${lib_list} ${dbg_list} ${arm_list} ${nacl_list}" |
 294   tr " " "\n" | sort -u | tr "\n" " "
 295 )"
 296
 297 if [ 1 -eq "${do_quick_check-0}" ] ; then
 298   failed_check="$(dpkg-query -W -f '${PackageSpec}:${Status}\n' \
 299     ${packages} 2>&1 | grep -v "ok installed" || :)"
 300   if [ -n "${failed_check}" ]; then
 301     echo
 302     nomatch="$(echo "${failed_check}" | \
 303       sed -e "s/^No packages found matching \(.*\).$/\1/;t;d")"
 304     missing="$(echo "${failed_check}" | \
 305       sed -e "/^No packages found matching/d;s/^\(.*\):.*$/\1/")"
 306     if [ "$nomatch" ]; then
 307       # Distinguish between packages that actually aren't available to the
 308       # system (i.e. not in any repo) and packages that just aren't known to
 309       # dpkg (i.e. managed by apt).
 310       unknown=""
 311       for p in ${nomatch}; do
 312         if apt-cache show ${p} > /dev/null 2>&1; then
 313           missing="${p}\n${missing}"
 314         else
 315           unknown="${p}\n${unknown}"
 316         fi
 317       done
 318       if [ -n "${unknown}" ]; then
 319         echo "WARNING: The following packages are unknown to your system"
 320         echo "(maybe missing a repo or need to 'sudo apt-get update'):"
 321         echo -e "${unknown}" | sed -e "s/^/  /"
 322       fi
 323     fi
 324     if [ -n "${missing}" ]; then
 325       echo "WARNING: The following packages are not installed:"
 326       echo -e "${missing}" | sed -e "s/^/  /"
 327     fi
 328     exit 1
 329   fi
 330   exit 0
 331 fi
 332
 333 sudo apt-get update
 334
 335 # We initially run "apt-get" with the --reinstall option and parse its output.
 336 # This way, we can find all the packages that need to be newly installed
 337 # without accidentally promoting any packages from "auto" to "manual".
 338 # We then re-run "apt-get" with just the list of missing packages.
 339 echo "Finding missing packages..."
 340 # Intentionally leaving $packages unquoted so it's more readable.
 341 echo "Packages required: " $packages
 342 echo
 343 new_list_cmd="sudo apt-get install --reinstall $(echo $packages)"
 344 if new_list="$(yes n | LANGUAGE=en LANG=C $new_list_cmd)"; then
 345   # We probably never hit this following line.
 346   echo "No missing packages, and the packages are up-to-date."
 347 elif [ $? -eq 1 ]; then
 348   # We expect apt-get to have exit status of 1.
 349   # This indicates that we cancelled the install with "yes n|".
 350   new_list=$(echo "$new_list" |
 351     sed -e '1,/The following NEW packages will be installed:/d;s/^  //;t;d')
 352   new_list=$(echo "$new_list" | sed 's/ *$//')
 353   if [ -z "$new_list" ] ; then
 354     echo "No missing packages, and the packages are up-to-date."
 355   else
 356     echo "Installing missing packages: $new_list."
 357     sudo apt-get install ${do_quietly-} ${new_list}
 358   fi
 359   echo
 360 else
 361   # An apt-get exit status of 100 indicates that a real error has occurred.
 362
 363   # I am intentionally leaving out the '"'s around new_list_cmd,
 364   # as this makes it easier to cut and paste the output
 365   echo "The following command failed: " ${new_list_cmd}
 366   echo
 367   echo "It produces the following output:"
 368   yes n | $new_list_cmd || true
 369   echo
 370   echo "You will have to install the above packages yourself."
 371   echo
 372   exit 100
 373 fi
 374
 375 # Install the Chrome OS default fonts. This must go after running
 376 # apt-get, since install-chromeos-fonts depends on curl.
 377 if test "$do_inst_chromeos_fonts" != "0"; then
 378   echo
 379   echo "Installing Chrome OS fonts."
 380   dir=`echo $0 | sed -r -e 's/\/[^/]+$//'`
 381   if ! sudo $dir/linux/install-chromeos-fonts.py; then
 382     echo "ERROR: The installation of the Chrome OS default fonts failed."
 383     if [ `stat -f -c %T $dir` == "nfs" ]; then
 384       echo "The reason is that your repo is installed on a remote file system."
 385     else
 386       echo "This is expected if your repo is installed on a remote file system."
 387     fi
 388     echo "It is recommended to install your repo on a local file system."
 389     echo "You can skip the installation of the Chrome OS default founts with"
 390     echo "the command line option: --no-chromeos-fonts."
 391     exit 1
 392   fi
 393 else
 394   echo "Skipping installation of Chrome OS fonts."
 395 fi
 396
 397 if test "$do_inst_nacl" = "1"; then
 398   echo "Installing symbolic links for NaCl."
 399   if [ ! -r /usr/lib/i386-linux-gnu/libcrypto.so ]; then
 400     sudo ln -fs libcrypto.so.0.9.8 /usr/lib/i386-linux-gnu/libcrypto.so
 401   fi
 402   if [ ! -r /usr/lib/i386-linux-gnu/libssl.so ]; then
 403     sudo ln -fs libssl.so.0.9.8 /usr/lib/i386-linux-gnu/libssl.so
 404   fi
 405 else
 406   echo "Skipping symbolic links for NaCl."
 407 fi
 408
 409 # Install 32bit backwards compatibility support for 64bit systems
 410 if file /sbin/init | grep -q 'ELF 64-bit'; then
 411   if test "$do_inst_lib32" != "1"
 412   then
 413     echo "NOTE: If you were expecting the option to install 32bit libs,"
 414     echo "please run with the --lib32 flag."
 415     echo
 416     echo "Installation complete."
 417     exit 0
 418   else
 419     # This conditional statement has been added to deprecate and eventually
 420     # remove support for 32bit libraries on 64bit systems. But for the time
 421     # being, we still have to support a few legacy systems (e.g. bots), where
 422     # this feature is needed.
 423     # We only even give the user the option to install these libraries, if
 424     # they explicitly requested doing so by setting the --lib32 command line
 425     # flag.
 426     # And even then, we interactively ask them one more time whether they are
 427     # absolutely sure.
 428     # In order for that to work, we must reset the ${do_inst_lib32} variable.
 429     # There are other ways to achieve the same goal. But resetting the
 430     # variable is the best way to document the intended behavior -- and to
 431     # allow us to gradually deprecate and then remove the obsolete code.
 432     if test "${do_default-0}" -ne 1; then
 433       do_inst_lib32=
 434     fi
 435   fi
 436
 437   echo "WARNING"
 438   echo
 439   echo "We no longer recommend that you use this script to install"
 440   echo "32bit libraries on a 64bit system. Instead, consider using the"
 441   echo "install-chroot.sh script to help you set up a 32bit environment"
 442   echo "for building and testing 32bit versions of Chrome."
 443   echo
 444   echo "The code for installing 32bit libraries on a 64bit system is"
 445   echo "unmaintained and might not work with modern versions of Ubuntu"
 446   echo "or Debian."
 447   if test "$do_inst_lib32" != "" ; then
 448     echo
 449     echo -n "Are you sure you want to proceed (y/N) "
 450     if yes_no 1; then
 451       do_inst_lib32=1
 452     fi
 453   fi
 454   if test "$do_inst_lib32" != "1"
 455   then
 456     exit 0
 457   fi
 458
 459   # Standard 32bit compatibility libraries
 460   echo "First, installing the limited existing 32-bit support..."
 461   cmp_list="ia32-libs lib32asound2-dev lib32stdc++6 lib32z1
 462             lib32z1-dev libc6-dev-i386 libc6-i386 g++-multilib"
 463   if [ -n "`apt-cache search lib32readline-gplv2-dev 2>/dev/null`" ]; then
 464     cmp_list="${cmp_list} lib32readline-gplv2-dev"
 465   else
 466     cmp_list="${cmp_list} lib32readline5-dev"
 467   fi
 468   sudo apt-get install ${do_quietly-} $cmp_list
 469
 470   tmp=/tmp/install-32bit.$$
 471   trap 'rm -rf "${tmp}"' EXIT INT TERM QUIT
 472   mkdir -p "${tmp}/apt/lists/partial" "${tmp}/cache" "${tmp}/partial"
 473   touch "${tmp}/status"
 474
 475   [ -r /etc/apt/apt.conf ] && cp /etc/apt/apt.conf "${tmp}/apt/"
 476   cat >>"${tmp}/apt/apt.conf" <<EOF
 477         Apt::Architecture "i386";
 478         Dir::Cache "${tmp}/cache";
 479         Dir::Cache::Archives "${tmp}/";
 480         Dir::State::Lists "${tmp}/apt/lists/";
 481         Dir::State::status "${tmp}/status";
 482 EOF
 483
 484   # Download 32bit packages
 485   echo "Computing list of available 32bit packages..."
 486   sudo apt-get -c="${tmp}/apt/apt.conf" update
 487
 488   echo "Downloading available 32bit packages..."
 489   sudo apt-get -c="${tmp}/apt/apt.conf" \
 490           --yes --download-only --force-yes --reinstall install \
 491           ${lib_list} ${dbg_list}
 492
 493   # Open packages, remove everything that is not a library, move the
 494   # library to a lib32 directory and package everything as a *.deb file.
 495   echo "Repackaging and installing 32bit packages for use on 64bit systems..."
 496   for i in ${lib_list} ${dbg_list}; do
 497     orig="$(echo "${tmp}/${i}"_*_i386.deb)"
 498     compat="$(echo "${orig}" |
 499               sed -e 's,\(_[^_/]*_\)i386\(.deb\),-ia32\1amd64\2,')"
 500     rm -rf "${tmp}/staging"
 501     msg="$(fakeroot -u sh -exc '
 502       # Unpack 32bit Debian archive
 503       umask 022
 504       mkdir -p "'"${tmp}"'/staging/dpkg/DEBIAN"
 505       cd "'"${tmp}"'/staging"
 506       ar x "'${orig}'"
 507       tar Cfx dpkg data.tar*
 508       tar zCfx dpkg/DEBIAN control.tar.gz
 509
 510       # Create a posix extended regular expression fragment that will
 511       # recognize the includes which have changed. Should be rare,
 512       # will almost always be empty.
 513       includes=`sed -n -e "s/^[0-9a-z]*  //g" \
 514                        -e "\,usr/include/,p" dpkg/DEBIAN/md5sums |
 515                   xargs -n 1 -I FILE /bin/sh -c \
 516                     "cmp -s dpkg/FILE /FILE || echo FILE" |
 517                   tr "\n" "|" |
 518                   sed -e "s,|$,,"`
 519
 520       # If empty, set it to not match anything.
 521       test -z "$includes" && includes="^//"
 522
 523       # Turn the conflicts into an extended RE for removal from the
 524       # Provides line.
 525       conflicts=`sed -n -e "/Conflicts/s/Conflicts: *//;T;s/, */|/g;p" \
 526                    dpkg/DEBIAN/control`
 527
 528       # Rename package, change architecture, remove conflicts and dependencies
 529       sed -r -i                              \
 530           -e "/Package/s/$/-ia32/"           \
 531           -e "/Architecture/s/:.*$/: amd64/" \
 532           -e "/Depends/s/:.*/: ia32-libs/"   \
 533           -e "/Provides/s/($conflicts)(, *)?//g;T1;s/, *$//;:1"   \
 534           -e "/Recommends/d"                 \
 535           -e "/Conflicts/d"                  \
 536         dpkg/DEBIAN/control
 537
 538       # Only keep files that live in "lib" directories or the includes
 539       # that have changed.
 540       sed -r -i                                                               \
 541           -e "/\/lib64\//d" -e "/\/.?bin\//d"                                 \
 542           -e "\,$includes,s,[ /]include/,&32/,g;s,include/32/,include32/,g"   \
 543           -e "s, lib/, lib32/,g"                                              \
 544           -e "s,/lib/,/lib32/,g"                                              \
 545           -e "t;d"                                                            \
 546           -e "\,^/usr/lib32/debug\(.*/lib32\),s,^/usr/lib32/debug,/usr/lib/debug," \
 547         dpkg/DEBIAN/md5sums
 548
 549       # Re-run ldconfig after installation/removal
 550       { echo "#!/bin/sh"; echo "[ \"x\$1\" = xconfigure ]&&ldconfig||:"; } \
 551         >dpkg/DEBIAN/postinst
 552       { echo "#!/bin/sh"; echo "[ \"x\$1\" = xremove ]&&ldconfig||:"; } \
 553         >dpkg/DEBIAN/postrm
 554       chmod 755 dpkg/DEBIAN/postinst dpkg/DEBIAN/postrm
 555
 556       # Remove any other control files
 557       find dpkg/DEBIAN -mindepth 1 "(" -name control -o -name md5sums -o \
 558                        -name postinst -o -name postrm ")" -o -print |
 559         xargs -r rm -rf
 560
 561       # Remove any files/dirs that live outside of "lib" directories,
 562       # or are not in our list of changed includes.
 563       find dpkg -mindepth 1 -regextype posix-extended \
 564           "(" -name DEBIAN -o -name lib -o -regex "dpkg/($includes)" ")" \
 565           -prune -o -print | tac |
 566         xargs -r -n 1 sh -c "rm \$0 2>/dev/null || rmdir \$0 2>/dev/null || : "
 567       find dpkg -name lib64 -o -name bin -o -name "?bin" |
 568         tac | xargs -r rm -rf
 569
 570       # Remove any symbolic links that were broken by the above steps.
 571       find -L dpkg -type l -print | tac | xargs -r rm -rf
 572
 573       # Rename lib to lib32, but keep debug symbols in /usr/lib/debug/usr/lib32
 574       # That is where gdb looks for them.
 575       find dpkg -type d -o -path "*/lib/*" -print |
 576         xargs -r -n 1 sh -c "
 577           i=\$(echo \"\${0}\" |
 578                sed -e s,/lib/,/lib32/,g \
 579                -e s,/usr/lib32/debug\\\\\(.*/lib32\\\\\),/usr/lib/debug\\\\1,);
 580           mkdir -p \"\${i%/*}\";
 581           mv \"\${0}\" \"\${i}\""
 582
 583       # Rename include to include32.
 584       [ -d "dpkg/usr/include" ] && mv "dpkg/usr/include" "dpkg/usr/include32"
 585
 586       # Prune any empty directories
 587       find dpkg -type d | tac | xargs -r -n 1 rmdir 2>/dev/null || :
 588
 589       # Create our own Debian package
 590       cd ..
 591       dpkg --build staging/dpkg .' 2>&1)"
 592     compat="$(eval echo $(echo "${compat}" |
 593                           sed -e 's,_[^_/]*_amd64.deb,_*_amd64.deb,'))"
 594     [ -r "${compat}" ] || {
 595       echo "${msg}" >&2
 596       echo "Failed to build new Debian archive!" >&2
 597       exit 1
 598     }
 599
 600     msg="$(sudo dpkg -i "${compat}" 2>&1)" && {
 601         echo "Installed ${compat##*/}"
 602       } || {
 603         # echo "${msg}" >&2
 604         echo "Skipped ${compat##*/}"
 605       }
 606   done
 607
 608   # Add symbolic links for developing 32bit code
 609   echo "Adding missing symbolic links, enabling 32bit code development..."
 610   for i in $(find /lib32 /usr/lib32 -maxdepth 1 -name \*.so.\* |
 611              sed -e 's/[.]so[.][0-9].*/.so/' |
 612              sort -u); do
 613     [ "x${i##*/}" = "xld-linux.so" ] && continue
 614     [ -r "$i" ] && continue
 615     j="$(ls "$i."* | sed -e 's/.*[.]so[.]\([^.]*\)$/\1/;t;d' |
 616          sort -n | tail -n 1)"
 617     [ -r "$i.$j" ] || continue
 618     sudo ln -s "${i##*/}.$j" "$i"
 619   done
 620 fi