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      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 gettext='gettext-0.22.tar.gz'
     35 
     36 base_url='http://gcc.gnu.org/pub/gcc/infrastructure/'
     37 
     38 echo_archives() {
     39     echo "${gettext}"
     40     if "${only_gettext}"; then return; fi
     41     echo "${gmp}"
     42     echo "${mpfr}"
     43     echo "${mpc}"
     44     if [ ${graphite} -gt 0 ]; then echo "${isl}"; fi
     45 }
     46 
     47 graphite=1
     48 verify=1
     49 force=0
     50 only_gettext=false
     51 OS=$(uname)
     52 
     53 if type wget > /dev/null ; then
     54   fetch='wget'
     55 else
     56   fetch='curl -LO'
     57 fi
     58 chksum_extension='sha512'
     59 directory='.'
     60 
     61 helptext="usage: ${program} [OPTION...]
     62 
     63 Downloads some prerequisites needed by GCC.  Run this from the top level of the
     64 GCC source tree and the GCC build will do the right thing.
     65 
     66 The following options are available:
     67 
     68  --directory=DIR  download and unpack packages into DIR instead of '.'
     69  --force          download again overwriting existing packages
     70  --no-force       do not download existing packages again (default)
     71  --isl            download ISL, needed for Graphite loop optimizations (default)
     72  --graphite       same as --isl
     73  --no-isl         don't download ISL
     74  --no-graphite    same as --no-isl
     75  --verify         verify package integrity after download (default)
     76  --no-verify      don't verify package integrity
     77  --sha512         use SHA512 checksum to verify package integrity (default)
     78  --md5            use MD5 checksum to verify package integrity
     79  --only-gettext   inhibit downloading any package but gettext
     80  --help           show this text and exit
     81  --version        show version information and exit
     82 "
     83 
     84 versiontext="${program} ${version}
     85 Copyright (C) 2016-2024 Free Software Foundation, Inc.
     86 This is free software; see the source for copying conditions.  There is NO
     87 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
     88 
     89 die() {
     90     echo "error: $@" >&2
     91     exit 1
     92 }
     93 
     94 for arg in "$@"
     95 do
     96     case "${arg}" in
     97         --help)
     98             echo "${helptext}"
     99             exit
    100             ;;
    101         --version)
    102             echo "${versiontext}"
    103             exit
    104             ;;
    105     esac
    106 done
    107 unset arg
    108 
    109 # Emulate Linux's 'md5sum --check' on macOS
    110 md5_check() {
    111   # Store the standard input: a line from contrib/prerequisites.md5:
    112   md5_checksum_line=$(cat -)
    113   # Grab the text before the first space
    114   md5_checksum_expected="${md5_checksum_line%% *}"
    115   # Grab the text after the first space
    116   file_to_check="${md5_checksum_line##* }"
    117   # Calculate the md5 checksum for the downloaded file
    118   md5_checksum_output=$(md5 -r "${file_to_check}")
    119   # Grab the text before the first space
    120   md5_checksum_detected="${md5_checksum_output%% *}"
    121   [ "${md5_checksum_expected}" = "${md5_checksum_detected}" ] \
    122     || die "Cannot verify integrity of possibly corrupted file ${file_to_check}"
    123   echo "${file_to_check}: OK"
    124 }
    125 
    126 
    127 argnext=
    128 for arg in "$@"
    129 do
    130     if [ "x${argnext}" = x ]
    131     then
    132         case "${arg}" in
    133             --directory)
    134                 argnext='directory'
    135                 ;;
    136             --directory=*)
    137                 directory="${arg#--directory=}"
    138                 ;;
    139             --force)
    140                 force=1
    141                 ;;
    142             --no-force)
    143                 force=0
    144                 ;;
    145             --isl|--graphite)
    146                 graphite=1
    147                 ;;
    148             --no-isl|--no-graphite)
    149                 graphite=0
    150                 ;;
    151             --verify)
    152                 verify=1
    153                 ;;
    154             --no-verify)
    155                 verify=0
    156                 ;;
    157             --sha512)
    158                 chksum_extension='sha512'
    159                 verify=1
    160                 ;;
    161             --md5)
    162                 chksum_extension='md5'
    163                 verify=1
    164                 ;;
    165             --only-gettext)
    166                 only_gettext=true
    167                 ;;
    168             -*)
    169                 die "unknown option: ${arg}"
    170                 ;;
    171             *)
    172                 die "too many arguments"
    173                 ;;
    174         esac
    175     else
    176         case "${arg}" in
    177             -*)
    178                 die "Missing argument for option --${argnext}"
    179                 ;;
    180         esac
    181         case "${argnext}" in
    182             directory)
    183                 directory="${arg}"
    184                 ;;
    185             *)
    186                 die "The impossible has happened"
    187                 ;;
    188         esac
    189         argnext=
    190     fi
    191 done
    192 [ "x${argnext}" = x ] || die "Missing argument for option --${argnext}"
    193 unset arg argnext
    194 
    195 case $chksum_extension in
    196   sha512)
    197     case $OS in
    198       "Darwin"|"FreeBSD"|"DragonFly"|"AIX")
    199         chksum='shasum -a 512 --check'
    200       ;;
    201       "OpenBSD")
    202         chksum='sha512 -c'
    203       ;;
    204       *)
    205         chksum='sha512sum -c'
    206       ;;
    207     esac
    208   ;;
    209   md5)
    210     case $OS in
    211       "Darwin")
    212         chksum='md5_check'
    213       ;;
    214       *)
    215         chksum='md5sum -c'
    216       ;;
    217     esac
    218     ;;
    219   *)
    220     die "Unkown checksum $chksum_extension"
    221   ;;
    222 esac
    223 
    224 [ -e ./gcc/BASE-VER ]                                                         \
    225     || die "You must run this script in the top-level GCC source directory"
    226 
    227 [ -d "${directory}" ]                                                         \
    228     || die "No such directory: ${directory}"
    229 
    230 for ar in $(echo_archives)
    231 do
    232     if [ ${force} -gt 0 ]; then rm -f "${directory}/${ar}"; fi
    233     [ -e "${directory}/${ar}" ]                                               \
    234         || ( cd "${directory}" && ${fetch} --no-verbose "${base_url}${ar}" )  \
    235         || die "Cannot download ${ar} from ${base_url}"
    236 done
    237 unset ar
    238 
    239 if [ ${verify} -gt 0 ]
    240 then
    241     chksumfile="contrib/prerequisites.${chksum_extension}"
    242     [ -r "${chksumfile}" ] || die "No checksums available"
    243     for ar in $(echo_archives)
    244     do
    245         grep "${ar}" "${chksumfile}"                                          \
    246             | ( cd "${directory}" && ${chksum} )                              \
    247             || die "Cannot verify integrity of possibly corrupted file ${ar}"
    248     done
    249     unset chksumfile
    250 fi
    251 unset ar
    252 
    253 for ar in $(echo_archives)
    254 do
    255     package="${ar%.tar*}"
    256     if [ ${force} -gt 0 ]; then rm -rf "${directory}/${package}"; fi
    257     case $ar in
    258     *.gz)
    259 	uncompress='gzip -d'
    260 	;;
    261     *.bz2)
    262 	uncompress='bzip2 -d'
    263 	;;
    264     *)
    265 	uncompress='cat'
    266 	;;
    267     esac
    268     [ -e "${directory}/${package}" ]                                          \
    269         || ( cd "${directory}" && $uncompress <"${ar}" | tar -xf - )          \
    270         || die "Cannot extract package from ${ar}"
    271     unset package
    272 done
    273 unset ar
    274 
    275 for ar in $(echo_archives)
    276 do
    277     target="${directory}/${ar%.tar*}/"
    278     linkname="${ar%-*}"
    279     if [ ${force} -gt 0 ]; then rm -f "${linkname}"; fi
    280     [ -e "${linkname}" ]                                                      \
    281         || ln -s "${target}" "${linkname}"                                    \
    282         || die "Cannot create symbolic link ${linkname} --> ${target}"
    283     unset target linkname
    284 done
    285 unset ar
    286 
    287 echo "All prerequisites downloaded successfully."
    288