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           libgbm-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 $chromeos_lib_list"
 130
 131 # Debugging symbols for all of the run-time libraries
 132 dbg_list="libatk1.0-dbg libc6-dbg libcairo2-dbg libfontconfig1-dbg
 133           libglib2.0-0-dbg libgtk2.0-0-dbg libpango1.0-0-dbg libpcre3-dbg
 134           libpixman-1-0-dbg libsqlite3-0-dbg libx11-6-dbg libxau6-dbg
 135           libxcb1-dbg libxcomposite1-dbg libxcursor1-dbg libxdamage1-dbg
 136           libxdmcp6-dbg libxext6-dbg libxfixes3-dbg libxi6-dbg libxinerama1-dbg
 137           libxrandr2-dbg libxrender1-dbg libxtst6-dbg zlib1g-dbg
 138           libstdc++6-4.6-dbg"
 139
 140 # arm cross toolchain packages needed to build chrome on armhf
 141 arm_list="libc6-dev-armhf-cross
 142           linux-libc-dev-armhf-cross
 143           g++-arm-linux-gnueabihf"
 144
 145 # Packages to build NaCl, its toolchains, and its ports.
 146 nacl_list="bison cmake xvfb gawk texinfo autoconf libtool
 147            libssl0.9.8:i386 lib32z1-dev
 148            libgpm2:i386 libncurses5:i386
 149            g++-mingw-w64-i686 libtinfo-dev libtinfo-dev:i386
 150            libglib2.0-0:i386 libnss3:i386
 151            libgconf-2-4:i386 libfontconfig:i386
 152            libpango1.0-0:i386 libxi6:i386 libxcursor1:i386 libxcomposite1:i386
 153            libasound2:i386 libxdamage1:i386 libxtst6:i386 libxrandr2:i386
 154            libcap2:i386 libudev0:i386 libgtk2.0-0:i386 libxss1:i386
 155            libexif12:i386 libgl1-mesa-glx:i386"
 156
 157 # Some package names have changed over time
 158 if package_exists ttf-mscorefonts-installer; then
 159   dev_list="${dev_list} ttf-mscorefonts-installer"
 160 else
 161   dev_list="${dev_list} msttcorefonts"
 162 fi
 163 if package_exists libnspr4-dbg; then
 164   dbg_list="${dbg_list} libnspr4-dbg libnss3-dbg"
 165   lib_list="${lib_list} libnspr4 libnss3"
 166 else
 167   dbg_list="${dbg_list} libnspr4-0d-dbg libnss3-1d-dbg"
 168   lib_list="${lib_list} libnspr4-0d libnss3-1d"
 169 fi
 170 if package_exists libjpeg-dev; then
 171   dev_list="${dev_list} libjpeg-dev"
 172 else
 173   dev_list="${dev_list} libjpeg62-dev"
 174 fi
 175 if package_exists libudev1; then
 176   dev_list="${dev_list} libudev1"
 177 else
 178   dev_list="${dev_list} libudev0"
 179 fi
 180 if package_exists libbrlapi0.6; then
 181   dev_list="${dev_list} libbrlapi0.6"
 182 else
 183   dev_list="${dev_list} libbrlapi0.5"
 184 fi
 185
 186
 187 # Some packages are only needed if the distribution actually supports
 188 # installing them.
 189 if package_exists appmenu-gtk; then
 190   lib_list="$lib_list appmenu-gtk"
 191 fi
 192
 193 # Waits for the user to press 'Y' or 'N'. Either uppercase of lowercase is
 194 # accepted. Returns 0 for 'Y' and 1 for 'N'. If an optional parameter has
 195 # been provided to yes_no(), the function also accepts RETURN as a user input.
 196 # The parameter specifies the exit code that should be returned in that case.
 197 # The function will echo the user's selection followed by a newline character.
 198 # Users can abort the function by pressing CTRL-C. This will call "exit 1".
 199 yes_no() {
 200   if [ 0 -ne "${do_default-0}" ] ; then
 201     [ $1 -eq 0 ] && echo "Y" || echo "N"
 202     return $1
 203   fi
 204   local c
 205   while :; do
 206     c="$(trap 'stty echo -iuclc icanon 2>/dev/null' EXIT INT TERM QUIT
 207          stty -echo iuclc -icanon 2>/dev/null
 208          dd count=1 bs=1 2>/dev/null | od -An -tx1)"
 209     case "$c" in
 210       " 0a") if [ -n "$1" ]; then
 211                [ $1 -eq 0 ] && echo "Y" || echo "N"
 212                return $1
 213              fi
 214              ;;
 215       " 79") echo "Y"
 216              return 0
 217              ;;
 218       " 6e") echo "N"
 219              return 1
 220              ;;
 221       "")    echo "Aborted" >&2
 222              exit 1
 223              ;;
 224       *)     # The user pressed an unrecognized key. As we are not echoing
 225              # any incorrect user input, alert the user by ringing the bell.
 226              (tput bel) 2>/dev/null
 227              ;;
 228     esac
 229   done
 230 }
 231
 232 if test "$do_inst_syms" = "" && test 0 -eq ${do_quick_check-0}
 233 then
 234   echo "This script installs all tools and libraries needed to build Chromium."
 235   echo ""
 236   echo "For most of the libraries, it can also install debugging symbols, which"
 237   echo "will allow you to debug code in the system libraries. Most developers"
 238   echo "won't need these symbols."
 239   echo -n "Do you want me to install them for you (y/N) "
 240   if yes_no 1; then
 241     do_inst_syms=1
 242   fi
 243 fi
 244 if test "$do_inst_syms" = "1"; then
 245   echo "Including debugging symbols."
 246 else
 247   echo "Skipping debugging symbols."
 248   dbg_list=
 249 fi
 250
 251 # When cross building for arm on 64-bit systems the host binaries
 252 # that are part of v8 need to be compiled with -m32 which means
 253 # that basic multilib support is needed.
 254 if file /sbin/init | grep -q 'ELF 64-bit'; then
 255   if [ "$lsb_release" = "trusty" ]; then
 256     # gcc-multilib conflicts with the arm cross compiler in trusty but
 257     # g++-4.8-multilib gives us the 32-bit support that we need.
 258     arm_list="$arm_list g++-4.8-multilib"
 259   else
 260     arm_list="$arm_list g++-multilib"
 261   fi
 262 fi
 263
 264 if test "$do_inst_arm" = "1" ; then
 265   echo "Including ARM cross toolchain."
 266 else
 267   echo "Skipping ARM cross toolchain."
 268   arm_list=
 269 fi
 270
 271 if test "$do_inst_nacl" = "1"; then
 272   echo "Including NaCl, NaCl toolchain, NaCl ports dependencies."
 273 else
 274   echo "Skipping NaCl, NaCl toolchain, NaCl ports dependencies."
 275   nacl_list=
 276 fi
 277
 278 packages="$(
 279   echo "${dev_list} ${lib_list} ${dbg_list} ${arm_list} ${nacl_list}" |
 280   tr " " "\n" | sort -u | tr "\n" " "
 281 )"
 282
 283 if [ 1 -eq "${do_quick_check-0}" ] ; then
 284   failed_check="$(dpkg-query -W -f '${PackageSpec}:${Status}\n' \
 285     ${packages} 2>&1 | grep -v "ok installed" || :)"
 286   if [ -n "${failed_check}" ]; then
 287     echo
 288     nomatch="$(echo "${failed_check}" | \
 289       sed -e "s/^No packages found matching \(.*\).$/\1/;t;d")"
 290     missing="$(echo "${failed_check}" | \
 291       sed -e "/^No packages found matching/d;s/^\(.*\):.*$/\1/")"
 292     if [ "$nomatch" ]; then
 293       # Distinguish between packages that actually aren't available to the
 294       # system (i.e. not in any repo) and packages that just aren't known to
 295       # dpkg (i.e. managed by apt).
 296       unknown=""
 297       for p in ${nomatch}; do
 298         if apt-cache show ${p} > /dev/null 2>&1; then
 299           missing="${p}\n${missing}"
 300         else
 301           unknown="${p}\n${unknown}"
 302         fi
 303       done
 304       if [ -n "${unknown}" ]; then
 305         echo "WARNING: The following packages are unknown to your system"
 306         echo "(maybe missing a repo or need to 'sudo apt-get update'):"
 307         echo -e "${unknown}" | sed -e "s/^/  /"
 308       fi
 309     fi
 310     if [ -n "${missing}" ]; then
 311       echo "WARNING: The following packages are not installed:"
 312       echo -e "${missing}" | sed -e "s/^/  /"
 313     fi
 314     exit 1
 315   fi
 316   exit 0
 317 fi
 318
 319 sudo apt-get update
 320
 321 # We initially run "apt-get" with the --reinstall option and parse its output.
 322 # This way, we can find all the packages that need to be newly installed
 323 # without accidentally promoting any packages from "auto" to "manual".
 324 # We then re-run "apt-get" with just the list of missing packages.
 325 echo "Finding missing packages..."
 326 # Intentionally leaving $packages unquoted so it's more readable.
 327 echo "Packages required: " $packages
 328 echo
 329 new_list_cmd="sudo apt-get install --reinstall $(echo $packages)"
 330 if new_list="$(yes n | LANGUAGE=en LANG=C $new_list_cmd)"; then
 331   # We probably never hit this following line.
 332   echo "No missing packages, and the packages are up-to-date."
 333 elif [ $? -eq 1 ]; then
 334   # We expect apt-get to have exit status of 1.
 335   # This indicates that we cancelled the install with "yes n|".
 336   new_list=$(echo "$new_list" |
 337     sed -e '1,/The following NEW packages will be installed:/d;s/^  //;t;d')
 338   new_list=$(echo "$new_list" | sed 's/ *$//')
 339   if [ -z "$new_list" ] ; then
 340     echo "No missing packages, and the packages are up-to-date."
 341   else
 342     echo "Installing missing packages: $new_list."
 343     sudo apt-get install ${do_quietly-} ${new_list}
 344   fi
 345   echo
 346 else
 347   # An apt-get exit status of 100 indicates that a real error has occurred.
 348
 349   # I am intentionally leaving out the '"'s around new_list_cmd,
 350   # as this makes it easier to cut and paste the output
 351   echo "The following command failed: " ${new_list_cmd}
 352   echo
 353   echo "It produces the following output:"
 354   yes n | $new_list_cmd || true
 355   echo
 356   echo "You will have to install the above packages yourself."
 357   echo
 358   exit 100
 359 fi
 360
 361 # Install the Chrome OS default fonts. This must go after running
 362 # apt-get, since install-chromeos-fonts depends on curl.
 363 if test "$do_inst_chromeos_fonts" != "0"; then
 364   echo
 365   echo "Installing Chrome OS fonts."
 366   dir=`echo $0 | sed -r -e 's/\/[^/]+$//'`
 367   if ! sudo $dir/linux/install-chromeos-fonts.py; then
 368     echo "ERROR: The installation of the Chrome OS default fonts failed."
 369     if [ `stat -f -c %T $dir` == "nfs" ]; then
 370       echo "The reason is that your repo is installed on a remote file system."
 371     else
 372       echo "This is expected if your repo is installed on a remote file system."
 373     fi
 374     echo "It is recommended to install your repo on a local file system."
 375     echo "You can skip the installation of the Chrome OS default founts with"
 376     echo "the command line option: --no-chromeos-fonts."
 377     exit 1
 378   fi
 379 else
 380   echo "Skipping installation of Chrome OS fonts."
 381 fi
 382
 383 if test "$do_inst_nacl" = "1"; then
 384   echo "Installing symbolic links for NaCl."
 385   if [ ! -r /usr/lib/i386-linux-gnu/libcrypto.so ]; then
 386     sudo ln -fs libcrypto.so.0.9.8 /usr/lib/i386-linux-gnu/libcrypto.so
 387   fi
 388   if [ ! -r /usr/lib/i386-linux-gnu/libssl.so ]; then
 389     sudo ln -fs libssl.so.0.9.8 /usr/lib/i386-linux-gnu/libssl.so
 390   fi
 391 else
 392   echo "Skipping symbolic links for NaCl."
 393 fi
 394
 395 # Install 32bit backwards compatibility support for 64bit systems
 396 if file /sbin/init | grep -q 'ELF 64-bit'; then
 397   if test "$do_inst_lib32" != "1"
 398   then
 399     echo "NOTE: If you were expecting the option to install 32bit libs,"
 400     echo "please run with the --lib32 flag."
 401     echo
 402     echo "Installation complete."
 403     exit 0
 404   else
 405     # This conditional statement has been added to deprecate and eventually
 406     # remove support for 32bit libraries on 64bit systems. But for the time
 407     # being, we still have to support a few legacy systems (e.g. bots), where
 408     # this feature is needed.
 409     # We only even give the user the option to install these libraries, if
 410     # they explicitly requested doing so by setting the --lib32 command line
 411     # flag.
 412     # And even then, we interactively ask them one more time whether they are
 413     # absolutely sure.
 414     # In order for that to work, we must reset the ${do_inst_lib32} variable.
 415     # There are other ways to achieve the same goal. But resetting the
 416     # variable is the best way to document the intended behavior -- and to
 417     # allow us to gradually deprecate and then remove the obsolete code.
 418     if test "${do_default-0}" -ne 1; then
 419       do_inst_lib32=
 420     fi
 421   fi
 422
 423   echo "WARNING"
 424   echo
 425   echo "We no longer recommend that you use this script to install"
 426   echo "32bit libraries on a 64bit system. Instead, consider using the"
 427   echo "install-chroot.sh script to help you set up a 32bit environment"
 428   echo "for building and testing 32bit versions of Chrome."
 429   echo
 430   echo "The code for installing 32bit libraries on a 64bit system is"
 431   echo "unmaintained and might not work with modern versions of Ubuntu"
 432   echo "or Debian."
 433   if test "$do_inst_lib32" != "" ; then
 434     echo
 435     echo -n "Are you sure you want to proceed (y/N) "
 436     if yes_no 1; then
 437       do_inst_lib32=1
 438     fi
 439   fi
 440   if test "$do_inst_lib32" != "1"
 441   then
 442     exit 0
 443   fi
 444
 445   # Standard 32bit compatibility libraries
 446   echo "First, installing the limited existing 32-bit support..."
 447   cmp_list="ia32-libs lib32asound2-dev lib32stdc++6 lib32z1
 448             lib32z1-dev libc6-dev-i386 libc6-i386 g++-multilib"
 449   if [ -n "`apt-cache search lib32readline-gplv2-dev 2>/dev/null`" ]; then
 450     cmp_list="${cmp_list} lib32readline-gplv2-dev"
 451   else
 452     cmp_list="${cmp_list} lib32readline5-dev"
 453   fi
 454   sudo apt-get install ${do_quietly-} $cmp_list
 455
 456   tmp=/tmp/install-32bit.$$
 457   trap 'rm -rf "${tmp}"' EXIT INT TERM QUIT
 458   mkdir -p "${tmp}/apt/lists/partial" "${tmp}/cache" "${tmp}/partial"
 459   touch "${tmp}/status"
 460
 461   [ -r /etc/apt/apt.conf ] && cp /etc/apt/apt.conf "${tmp}/apt/"
 462   cat >>"${tmp}/apt/apt.conf" <<EOF
 463         Apt::Architecture "i386";
 464         Dir::Cache "${tmp}/cache";
 465         Dir::Cache::Archives "${tmp}/";
 466         Dir::State::Lists "${tmp}/apt/lists/";
 467         Dir::State::status "${tmp}/status";
 468 EOF
 469
 470   # Download 32bit packages
 471   echo "Computing list of available 32bit packages..."
 472   sudo apt-get -c="${tmp}/apt/apt.conf" update
 473
 474   echo "Downloading available 32bit packages..."
 475   sudo apt-get -c="${tmp}/apt/apt.conf" \
 476           --yes --download-only --force-yes --reinstall install \
 477           ${lib_list} ${dbg_list}
 478
 479   # Open packages, remove everything that is not a library, move the
 480   # library to a lib32 directory and package everything as a *.deb file.
 481   echo "Repackaging and installing 32bit packages for use on 64bit systems..."
 482   for i in ${lib_list} ${dbg_list}; do
 483     orig="$(echo "${tmp}/${i}"_*_i386.deb)"
 484     compat="$(echo "${orig}" |
 485               sed -e 's,\(_[^_/]*_\)i386\(.deb\),-ia32\1amd64\2,')"
 486     rm -rf "${tmp}/staging"
 487     msg="$(fakeroot -u sh -exc '
 488       # Unpack 32bit Debian archive
 489       umask 022
 490       mkdir -p "'"${tmp}"'/staging/dpkg/DEBIAN"
 491       cd "'"${tmp}"'/staging"
 492       ar x "'${orig}'"
 493       tar Cfx dpkg data.tar*
 494       tar zCfx dpkg/DEBIAN control.tar.gz
 495
 496       # Create a posix extended regular expression fragment that will
 497       # recognize the includes which have changed. Should be rare,
 498       # will almost always be empty.
 499       includes=`sed -n -e "s/^[0-9a-z]*  //g" \
 500                        -e "\,usr/include/,p" dpkg/DEBIAN/md5sums |
 501                   xargs -n 1 -I FILE /bin/sh -c \
 502                     "cmp -s dpkg/FILE /FILE || echo FILE" |
 503                   tr "\n" "|" |
 504                   sed -e "s,|$,,"`
 505
 506       # If empty, set it to not match anything.
 507       test -z "$includes" && includes="^//"
 508
 509       # Turn the conflicts into an extended RE for removal from the
 510       # Provides line.
 511       conflicts=`sed -n -e "/Conflicts/s/Conflicts: *//;T;s/, */|/g;p" \
 512                    dpkg/DEBIAN/control`
 513
 514       # Rename package, change architecture, remove conflicts and dependencies
 515       sed -r -i                              \
 516           -e "/Package/s/$/-ia32/"           \
 517           -e "/Architecture/s/:.*$/: amd64/" \
 518           -e "/Depends/s/:.*/: ia32-libs/"   \
 519           -e "/Provides/s/($conflicts)(, *)?//g;T1;s/, *$//;:1"   \
 520           -e "/Recommends/d"                 \
 521           -e "/Conflicts/d"                  \
 522         dpkg/DEBIAN/control
 523
 524       # Only keep files that live in "lib" directories or the includes
 525       # that have changed.
 526       sed -r -i                                                               \
 527           -e "/\/lib64\//d" -e "/\/.?bin\//d"                                 \
 528           -e "\,$includes,s,[ /]include/,&32/,g;s,include/32/,include32/,g"   \
 529           -e "s, lib/, lib32/,g"                                              \
 530           -e "s,/lib/,/lib32/,g"                                              \
 531           -e "t;d"                                                            \
 532           -e "\,^/usr/lib32/debug\(.*/lib32\),s,^/usr/lib32/debug,/usr/lib/debug," \
 533         dpkg/DEBIAN/md5sums
 534
 535       # Re-run ldconfig after installation/removal
 536       { echo "#!/bin/sh"; echo "[ \"x\$1\" = xconfigure ]&&ldconfig||:"; } \
 537         >dpkg/DEBIAN/postinst
 538       { echo "#!/bin/sh"; echo "[ \"x\$1\" = xremove ]&&ldconfig||:"; } \
 539         >dpkg/DEBIAN/postrm
 540       chmod 755 dpkg/DEBIAN/postinst dpkg/DEBIAN/postrm
 541
 542       # Remove any other control files
 543       find dpkg/DEBIAN -mindepth 1 "(" -name control -o -name md5sums -o \
 544                        -name postinst -o -name postrm ")" -o -print |
 545         xargs -r rm -rf
 546
 547       # Remove any files/dirs that live outside of "lib" directories,
 548       # or are not in our list of changed includes.
 549       find dpkg -mindepth 1 -regextype posix-extended \
 550           "(" -name DEBIAN -o -name lib -o -regex "dpkg/($includes)" ")" \
 551           -prune -o -print | tac |
 552         xargs -r -n 1 sh -c "rm \$0 2>/dev/null || rmdir \$0 2>/dev/null || : "
 553       find dpkg -name lib64 -o -name bin -o -name "?bin" |
 554         tac | xargs -r rm -rf
 555
 556       # Remove any symbolic links that were broken by the above steps.
 557       find -L dpkg -type l -print | tac | xargs -r rm -rf
 558
 559       # Rename lib to lib32, but keep debug symbols in /usr/lib/debug/usr/lib32
 560       # That is where gdb looks for them.
 561       find dpkg -type d -o -path "*/lib/*" -print |
 562         xargs -r -n 1 sh -c "
 563           i=\$(echo \"\${0}\" |
 564                sed -e s,/lib/,/lib32/,g \
 565                -e s,/usr/lib32/debug\\\\\(.*/lib32\\\\\),/usr/lib/debug\\\\1,);
 566           mkdir -p \"\${i%/*}\";
 567           mv \"\${0}\" \"\${i}\""
 568
 569       # Rename include to include32.
 570       [ -d "dpkg/usr/include" ] && mv "dpkg/usr/include" "dpkg/usr/include32"
 571
 572       # Prune any empty directories
 573       find dpkg -type d | tac | xargs -r -n 1 rmdir 2>/dev/null || :
 574
 575       # Create our own Debian package
 576       cd ..
 577       dpkg --build staging/dpkg .' 2>&1)"
 578     compat="$(eval echo $(echo "${compat}" |
 579                           sed -e 's,_[^_/]*_amd64.deb,_*_amd64.deb,'))"
 580     [ -r "${compat}" ] || {
 581       echo "${msg}" >&2
 582       echo "Failed to build new Debian archive!" >&2
 583       exit 1
 584     }
 585
 586     msg="$(sudo dpkg -i "${compat}" 2>&1)" && {
 587         echo "Installed ${compat##*/}"
 588       } || {
 589         # echo "${msg}" >&2
 590         echo "Skipped ${compat##*/}"
 591       }
 592   done
 593
 594   # Add symbolic links for developing 32bit code
 595   echo "Adding missing symbolic links, enabling 32bit code development..."
 596   for i in $(find /lib32 /usr/lib32 -maxdepth 1 -name \*.so.\* |
 597              sed -e 's/[.]so[.][0-9].*/.so/' |
 598              sort -u); do
 599     [ "x${i##*/}" = "xld-linux.so" ] && continue
 600     [ -r "$i" ] && continue
 601     j="$(ls "$i."* | sed -e 's/.*[.]so[.]\([^.]*\)$/\1/;t;d' |
 602          sort -n | tail -n 1)"
 603     [ -r "$i.$j" ] || continue
 604     sudo ln -s "${i##*/}.$j" "$i"
 605   done
 606 fi