contrib/download_prerequisites

   1 #! /bin/sh
   2 #! -*- coding:utf-8; mode:shell-script; -*-
   3
   4 # Download some prerequisites needed by GCC.
   5 # Run this from the top level of the GCC source tree and the GCC build will do
   6 # the right thing.  Run it with the `--help` option for more information.
   7 #
   8 # (C) 2010-2016 Free Software Foundation
   9 #
  10 # This program is free software: you can redistribute it and/or modify
  11 # it under the terms of the GNU General Public License as published by
  12 # the Free Software Foundation, either version 3 of the License, or
  13 # (at your option) any later version.
  14 #
  15 # This program is distributed in the hope that it will be useful, but
  16 # WITHOUT ANY WARRANTY; without even the implied warranty of
  17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18 # General Public License for more details.
  19 #
  20 # You should have received a copy of the GNU General Public License
  21 # along with this program. If not, see http://www.gnu.org/licenses/.
  22
  23 program='download_prerequisites'
  24 version='(unversioned)'
  25
  26 # MAINTAINERS: If you update the package versions below, please
  27 # remember to also update the files `contrib/prerequisites.sha512` and
  28 # `contrib/prerequisites.md5` with the new checksums.
  29
  30 gmp='gmp-6.1.0.tar.bz2'
  31 mpfr='mpfr-3.1.6.tar.bz2'
  32 mpc='mpc-1.0.3.tar.gz'
  33 isl='isl-0.18.tar.bz2'
  34
  35 base_url='http://gcc.gnu.org/pub/gcc/infrastructure/'
  36
  37 echo_archives() {
  38     echo "${gmp}"
  39     echo "${mpfr}"
  40     echo "${mpc}"
  41     if [ ${graphite} -gt 0 ]; then echo "${isl}"; fi
  42 }
  43
  44 graphite=1
  45 verify=1
  46 force=0
  47 OS=$(uname)
  48
  49 if type wget > /dev/null ; then
  50   fetch='wget'
  51 else
  52   fetch='curl -LO'
  53 fi
  54 chksum_extension='sha512'
  55 directory='.'
  56
  57 helptext="usage: ${program} [OPTION...]
  58
  59 Downloads some prerequisites needed by GCC.  Run this from the top level of the
  60 GCC source tree and the GCC build will do the right thing.
  61
  62 The following options are available:
  63
  64  --directory=DIR  download and unpack packages into DIR instead of '.'
  65  --force          download again overwriting existing packages
  66  --no-force       do not download existing packages again (default)
  67  --isl            download ISL, needed for Graphite loop optimizations (default)
  68  --graphite       same as --isl
  69  --no-isl         don't download ISL
  70  --no-graphite    same as --no-isl
  71  --verify         verify package integrity after download (default)
  72  --no-verify      don't verify package integrity
  73  --sha512         use SHA512 checksum to verify package integrity (default)
  74  --md5            use MD5 checksum to verify package integrity
  75  --help           show this text and exit
  76  --version        show version information and exit
  77 "
  78
  79 versiontext="${program} ${version}
  80 Copyright (C) 2016 Free Software Foundation, Inc.
  81 This is free software; see the source for copying conditions.  There is NO
  82 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
  83
  84 die() {
  85     echo "error: $@" >&2
  86     exit 1
  87 }
  88
  89 for arg in "$@"
  90 do
  91     case "${arg}" in
  92         --help)
  93             echo "${helptext}"
  94             exit
  95             ;;
  96         --version)
  97             echo "${versiontext}"
  98             exit
  99             ;;
 100     esac
 101 done
 102 unset arg
 103
 104 # Emulate Linux's 'md5sum --check' on macOS
 105 md5_check() {
 106   # Store the standard input: a line from contrib/prerequisites.md5:
 107   md5_checksum_line=$(cat -)
 108   # Grab the text before the first space
 109   md5_checksum_expected="${md5_checksum_line%% *}"
 110   # Grab the text after the first space
 111   file_to_check="${md5_checksum_line##* }"
 112   # Calculate the md5 checksum for the downloaded file
 113   md5_checksum_output=$(md5 -r "${file_to_check}")
 114   # Grab the text before the first space
 115   md5_checksum_detected="${md5_checksum_output%% *}"
 116   [ "${md5_checksum_expected}" = "${md5_checksum_detected}" ] \
 117     || die "Cannot verify integrity of possibly corrupted file ${file_to_check}"
 118   echo "${file_to_check}: OK"
 119 }
 120
 121
 122 argnext=
 123 for arg in "$@"
 124 do
 125     if [ "x${argnext}" = x ]
 126     then
 127         case "${arg}" in
 128             --directory)
 129                 argnext='directory'
 130                 ;;
 131             --directory=*)
 132                 directory="${arg#--directory=}"
 133                 ;;
 134             --force)
 135                 force=1
 136                 ;;
 137             --no-force)
 138                 force=0
 139                 ;;
 140             --isl|--graphite)
 141                 graphite=1
 142                 ;;
 143             --no-isl|--no-graphite)
 144                 graphite=0
 145                 ;;
 146             --verify)
 147                 verify=1
 148                 ;;
 149             --no-verify)
 150                 verify=0
 151                 ;;
 152             --sha512)
 153                 chksum_extension='sha512'
 154                 verify=1
 155                 ;;
 156             --md5)
 157                 chksum_extension='md5'
 158                 verify=1
 159                 ;;
 160             -*)
 161                 die "unknown option: ${arg}"
 162                 ;;
 163             *)
 164                 die "too many arguments"
 165                 ;;
 166         esac
 167     else
 168         case "${arg}" in
 169             -*)
 170                 die "Missing argument for option --${argnext}"
 171                 ;;
 172         esac
 173         case "${argnext}" in
 174             directory)
 175                 directory="${arg}"
 176                 ;;
 177             *)
 178                 die "The impossible has happened"
 179                 ;;
 180         esac
 181         argnext=
 182     fi
 183 done
 184 [ "x${argnext}" = x ] || die "Missing argument for option --${argnext}"
 185 unset arg argnext
 186
 187 case $chksum_extension in
 188   sha512)
 189     case $OS in
 190       "Darwin"|"FreeBSD"|"DragonFly"|"AIX")
 191         chksum='shasum -a 512 --check'
 192       ;;
 193       "OpenBSD")
 194         chksum='sha512 -c'
 195       ;;
 196       *)
 197         chksum='sha512sum -c'
 198       ;;
 199     esac
 200   ;;
 201   md5)
 202     case $OS in
 203       "Darwin")
 204         chksum='md5_check'
 205       ;;
 206       *)
 207         chksum='md5sum -c'
 208       ;;
 209     esac
 210     ;;
 211   *)
 212     die "Unkown checksum $chksum_extension"
 213   ;;
 214 esac
 215
 216 [ -e ./gcc/BASE-VER ]                                                         \
 217     || die "You must run this script in the top-level GCC source directory"
 218
 219 [ -d "${directory}" ]                                                         \
 220     || die "No such directory: ${directory}"
 221
 222 for ar in $(echo_archives)
 223 do
 224     if [ ${force} -gt 0 ]; then rm -f "${directory}/${ar}"; fi
 225     [ -e "${directory}/${ar}" ]                                               \
 226         || ( cd "${directory}" && ${fetch} --no-verbose "${base_url}${ar}" )  \
 227         || die "Cannot download ${ar} from ${base_url}"
 228 done
 229 unset ar
 230
 231 if [ ${verify} -gt 0 ]
 232 then
 233     chksumfile="contrib/prerequisites.${chksum_extension}"
 234     [ -r "${chksumfile}" ] || die "No checksums available"
 235     for ar in $(echo_archives)
 236     do
 237         grep "${ar}" "${chksumfile}"                                          \
 238             | ( cd "${directory}" && ${chksum} )                              \
 239             || die "Cannot verify integrity of possibly corrupted file ${ar}"
 240     done
 241     unset chksumfile
 242 fi
 243 unset ar
 244
 245 for ar in $(echo_archives)
 246 do
 247     package="${ar%.tar*}"
 248     if [ ${force} -gt 0 ]; then rm -rf "${directory}/${package}"; fi
 249     case $ar in
 250     *.gz)
 251         uncompress='gzip -d'
 252         ;;
 253     *.bz2)
 254         uncompress='bzip2 -d'
 255         ;;
 256     *)
 257         uncompress='cat'
 258         ;;
 259     esac
 260     [ -e "${directory}/${package}" ]                                          \
 261         || ( cd "${directory}" && $uncompress <"${ar}" | tar -xf - )          \
 262         || die "Cannot extract package from ${ar}"
 263     unset package
 264 done
 265 unset ar
 266
 267 for ar in $(echo_archives)
 268 do
 269     target="${directory}/${ar%.tar*}/"
 270     linkname="${ar%-*}"
 271     if [ ${force} -gt 0 ]; then rm -f "${linkname}"; fi
 272     [ -e "${linkname}" ]                                                      \
 273         || ln -s "${target}" "${linkname}"                                    \
 274         || die "Cannot create symbolic link ${linkname} --> ${target}"
 275     unset target linkname
 276 done
 277 unset ar
 278
 279 echo "All prerequisites downloaded successfully."