Home | History | Annotate | Line # | Download | only in contrib 
      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) 2010-2021 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-6.2.1.tar.bz2'
     31 mpfr='mpfr-4.1.0.tar.bz2'
     32 mpc='mpc-1.2.1.tar.gz'
     33 isl='isl-0.24.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) 2016-2021 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."
    280