gcc/config/print-sysroot-suffix.sh

   1 #! /bin/sh
   2 # Script to generate SYSROOT_SUFFIX_SPEC equivalent to MULTILIB_OSDIRNAMES
   3 # Arguments are MULTILIB_OSDIRNAMES, MULTILIB_OPTIONS, MULTILIB_MATCHES,
   4 # and MULTILIB_REUSE.
   5
   6 # Copyright (C) 2009-2017 Free Software Foundation, Inc.
   7
   8 # This file is part of GCC.
   9
  10 # GCC is free software; you can redistribute it and/or modify it under
  11 # the terms of the GNU General Public License as published by the Free
  12 # Software Foundation; either version 3, or (at your option) any later
  13 # version.
  14
  15 # GCC is distributed in the hope that it will be useful, but WITHOUT
  16 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  18 # for more details.
  19
  20 # You should have received a copy of the GNU General Public License
  21 # along with GCC; see the file COPYING3.  If not see
  22 # <http://www.gnu.org/licenses/>.
  23
  24 # This shell script produces a header file fragment that defines
  25 # SYSROOT_SUFFIX_SPEC.  It assumes that the sysroots will have the same
  26 # structure and names used by the multilibs.
  27
  28 # Invocation:
  29 #   print-sysroot-suffix.sh \
  30 #          MULTILIB_OSDIRNAMES \
  31 #          MULTILIB_OPTIONS \
  32 #          MULTILIB_MATCHES \
  33 #          MULTILIB_REUSE
  34 #      > t-sysroot-suffix.h
  35
  36 # The four options exactly correspond to the variables of the same
  37 # names defined in the t-sysroot-suffix tmake_file fragment.
  38
  39 # Example:
  40 #   sh ./gcc/config/print-sysroot-suffix.sh "a=A" "a b/c/d" ""
  41 # =>
  42 #   #undef SYSROOT_SUFFIX_SPEC
  43 #   #define SYSROOT_SUFFIX_SPEC "" \
  44 #   "%{a:" \
  45 #     "%{b:A/b/;" \
  46 #     "c:A/c/;" \
  47 #     "d:A/d/;" \
  48 #     ":A/};" \
  49 #   ":}"
  50
  51 # The script uses temporary subscripts in order to permit a recursive
  52 # algorithm without the use of functions.
  53
  54 set -e
  55
  56 dirnames="$1"
  57 options="$2"
  58 matches="$3"
  59 reuse="$4"
  60
  61 cat > print-sysroot-suffix3.sh <<\EOF
  62 #! /bin/sh
  63 # Print all the multilib matches for this option
  64 result="$1"
  65 EOF
  66 for x in $matches; do
  67   l=`echo $x | sed -e 's/=.*$//' -e 's/?/=/g'`
  68   r=`echo $x | sed -e 's/^.*=//' -e 's/?/=/g'`
  69   echo "[ \"\$1\" = \"$l\" ] && result=\"\$result|$r\"" >> print-sysroot-suffix3.sh
  70 done
  71 echo 'echo $result' >> print-sysroot-suffix3.sh
  72 chmod +x print-sysroot-suffix3.sh
  73
  74 cat > print-sysroot-suffix2.sh <<\EOF
  75 #! /bin/sh
  76 # Recursive script to enumerate all multilib combinations, match against
  77 # multilib directories and output a spec string of the result.
  78 # Will fold identical trees.
  79
  80 padding="$1"
  81 optstring="$2"
  82 shift 2
  83 n="\" \\
  84 $padding\""
  85 if [ $# = 0 ]; then
  86   case $optstring in
  87 EOF
  88 for x in $reuse; do
  89   l=`echo $x | sed -e 's/=.*$//' -e 's/\./=/g'`
  90   r=`echo $x | sed -e 's/^.*=//' -e 's/\./=/g'`
  91   echo "/$r/) optstring=\"/$l/\" ;;" >> print-sysroot-suffix2.sh
  92 done
  93 echo "  esac" >> print-sysroot-suffix2.sh
  94
  95 pat=
  96 for x in $dirnames; do
  97   p=`echo $x | sed -e 's,=!,/$=/,'`
  98   pat="$pat -e 's=^//$p='"
  99 done
 100 echo '  optstring=`echo "/$optstring" | sed '"$pat\`" >> print-sysroot-suffix2.sh
 101 cat >> print-sysroot-suffix2.sh <<\EOF
 102   case $optstring in
 103   //*)
 104     ;;
 105   *)
 106     echo "$optstring"
 107     ;;
 108   esac
 109 else
 110   thisopt="$1"
 111   shift
 112   bit=
 113   lastcond=
 114   result=
 115   for x in `echo "$thisopt" | sed -e 's,/, ,g'`; do
 116     case $x in
 117 EOF
 118 for x in `echo "$options" | sed -e 's,/, ,g'`; do
 119   match=`./print-sysroot-suffix3.sh "$x"`
 120   echo "$x) optmatch=\"$match\" ;;" >> print-sysroot-suffix2.sh
 121 done
 122 cat >> print-sysroot-suffix2.sh <<\EOF
 123     esac
 124     bit=`"$0" "$padding  " "$optstring$x/" "$@"`
 125     if [ -z "$lastopt" ]; then
 126       lastopt="$optmatch"
 127     else
 128       if [ "$lastbit" = "$bit" ]; then
 129         lastopt="$lastopt|$optmatch"
 130       else
 131         result="$result$lastopt:$lastbit;$n"
 132         lastopt="$optmatch"
 133       fi
 134     fi
 135     lastbit="$bit"
 136   done
 137   bit=`"$0" "$padding  " "$optstring" "$@"`
 138   if [ "$bit" = "$lastbit" ]; then
 139     if [ -z "$result" ]; then
 140       echo "$bit"
 141     else
 142       echo "$n%{$result:$bit}"
 143     fi
 144   else
 145     echo "$n%{$result$lastopt:$lastbit;$n:$bit}"
 146   fi
 147 fi
 148 EOF
 149
 150 chmod +x ./print-sysroot-suffix2.sh
 151 result=`./print-sysroot-suffix2.sh "" "/" $options`
 152 echo "#undef SYSROOT_SUFFIX_SPEC"
 153 echo "#define SYSROOT_SUFFIX_SPEC \"$result\""
 154 rm print-sysroot-suffix2.sh
 155 rm print-sysroot-suffix3.sh