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
  24 program='download_prerequisites'
  25 version='(unversioned)'
  26
  27 # MAINTAINERS: If you update the package versions below, please
  28 # remember to also update the files `contrib/prerequisites.sha512` and
  29 # `contrib/prerequisites.md5` with the new checksums.
  30
  31 gmp='gmp-6.1.0.tar.bz2'
  32 mpfr='mpfr-3.1.4.tar.bz2'
  33 mpc='mpc-1.0.3.tar.gz'
  34 isl='isl-0.16.1.tar.bz2'
  35
  36 base_url='ftp://gcc.gnu.org/pub/gcc/infrastructure/'
  37
  38 echo_archives() {
  39     echo "${gmp}"
  40     echo "${mpfr}"
  41     echo "${mpc}"
  42     if [ ${graphite} -gt 0 ]; then echo "${isl}"; fi
  43 }
  44
  45 graphite=1
  46 verify=1
  47 force=0
  48 chksum='sha512'
  49 directory='.'
  50
  51 helptext="usage: ${program} [OPTION...]
  52
  53 Downloads some prerequisites needed by GCC.  Run this from the top level of the
  54 GCC source tree and the GCC build will do the right thing.
  55
  56 The following options are available:
  57
  58  --directory=DIR  download and unpack packages into DIR instead of '.'
  59  --force          download again overwriting existing packages
  60  --no-force       do not download existing packages again (default)
  61  --isl            download ISL, needed for Graphite loop optimizations (default)
  62  --graphite       same as --isl
  63  --no-isl         don't download ISL
  64  --no-graphite    same as --no-isl
  65  --verify         verify package integrity after download (default)
  66  --no-verify      don't verify package integrity
  67  --sha512         use SHA512 checksum to verify package integrity (default)
  68  --md5            use MD5 checksum to verify package integrity
  69  --help           show this text and exit
  70  --version        show version information and exit
  71 "
  72
  73 versiontext="${program} ${version}
  74 Copyright (C) 2016 Free Software Foundation, Inc.
  75 This is free software; see the source for copying conditions.  There is NO
  76 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
  77
  78 die() {
  79     echo "error: $@" >&2
  80     exit 1
  81 }
  82
  83 for arg in "$@"
  84 do
  85     case "${arg}" in
  86         --help)
  87             echo "${helptext}"
  88             exit
  89             ;;
  90         --version)
  91             echo "${versiontext}"
  92             exit
  93             ;;
  94     esac
  95 done
  96 unset arg
  97
  98 argnext=
  99 for arg in "$@"
 100 do
 101     if [ "x${argnext}" = x ]
 102     then
 103         case "${arg}" in
 104             --directory)
 105                 argnext='directory'
 106                 ;;
 107             --directory=*)
 108                 directory="${arg#--directory=}"
 109                 ;;
 110             --force)
 111                 force=1
 112                 ;;
 113             --no-force)
 114                 force=0
 115                 ;;
 116             --isl|--graphite)
 117                 graphite=1
 118                 ;;
 119             --no-isl|--no-graphite)
 120                 graphite=0
 121                 ;;
 122             --verify)
 123                 verify=1
 124                 ;;
 125             --no-verify)
 126                 verify=0
 127                 ;;
 128             --sha512)
 129                 chksum='sha512'
 130                 verify=1
 131                 ;;
 132             --md5)
 133                 chksum='md5'
 134                 verify=1
 135                 ;;
 136             -*)
 137                 die "unknown option: ${arg}"
 138                 ;;
 139             *)
 140                 die "too many arguments"
 141                 ;;
 142         esac
 143     else
 144         case "${arg}" in
 145             -*)
 146                 die "Missing argument for option --${argnext}"
 147                 ;;
 148         esac
 149         case "${argnext}" in
 150             directory)
 151                 directory="${arg}"
 152                 ;;
 153             *)
 154                 die "The impossible has happened"
 155                 ;;
 156         esac
 157         argnext=
 158     fi
 159 done
 160 [ "x${argnext}" = x ] || die "Missing argument for option --${argnext}"
 161 unset arg argnext
 162
 163 [ -e ./gcc/BASE-VER ]                                                         \
 164     || die "You must run this script in the top-level GCC source directory"
 165
 166 [ -d "${directory}" ]                                                         \
 167     || die "No such directory: ${directory}"
 168
 169 for ar in $(echo_archives)
 170 do
 171     if [ ${force} -gt 0 ]; then rm -f "${directory}/${ar}"; fi
 172     [ -e "${directory}/${ar}" ]                                               \
 173         || wget --no-verbose -O "${directory}/${ar}" "${base_url}${ar}"       \
 174         || die "Cannot download ${ar} from ${base_url}"
 175 done
 176 unset ar
 177
 178 if [ ${verify} -gt 0 ]
 179 then
 180     chksumfile="contrib/prerequisites.${chksum}"
 181     [ -r "${chksumfile}" ] || die "No checksums available"
 182     for ar in $(echo_archives)
 183     do
 184         grep "${ar}" "${chksumfile}"                                          \
 185             | ( cd "${directory}" && "${chksum}sum" --check )                 \
 186             || die "Cannot verify integrity of possibly corrupted file ${ar}"
 187     done
 188     unset chksumfile
 189 fi
 190 unset ar
 191
 192 for ar in $(echo_archives)
 193 do
 194     package="${ar%.tar*}"
 195     if [ ${force} -gt 0 ]; then rm -rf "${directory}/${package}"; fi
 196     [ -e "${directory}/${package}" ]                                          \
 197         || ( cd "${directory}" && tar -xf "${ar}" )                           \
 198         || die "Cannot extract package from ${ar}"
 199     unset package
 200 done
 201 unset ar
 202
 203 for ar in $(echo_archives)
 204 do
 205     target="${directory}/${ar%.tar*}/"
 206     linkname="${ar%-*}"
 207     if [ ${force} -gt 0 ]; then rm -f "${linkname}"; fi
 208     [ -e "${linkname}" ]                                                      \
 209         || ln -s "${target}" "${linkname}"                                    \
 210         || die "Cannot create symbolic link ${linkname} --> ${target}"
 211     unset target linkname
 212 done
 213 unset ar
 214
 215 echo "All prerequisites downloaded successfully."