src/cmd/INIT/mamprobe.sh

   1 ########################################################################
   2 #                                                                      #
   3 #               This software is part of the ast package               #
   4 #          Copyright (c) 1994-2016 AT&T Intellectual Property          #
   5 #                      and is licensed under the                       #
   6 #                 Eclipse Public License, Version 1.0                  #
   7 #                    by AT&T Intellectual Property                     #
   8 #                                                                      #
   9 #                A copy of the License is available at                 #
  10 #          http://www.eclipse.org/org/documents/epl-v10.html           #
  11 #         (with md5 checksum b35adb5213ca9657e911e9befb180842)         #
  12 #                                                                      #
  13 #              Information and Software Systems Research               #
  14 #                            AT&T Research                             #
  15 #                           Florham Park NJ                            #
  16 #                                                                      #
  17 #               Glenn Fowler <glenn.s.fowler@gmail.com>                #
  18 #                                                                      #
  19 ########################################################################
  20 ########################################################################
  21 #                                                                      #
  22 #               This software is part of the ast package               #
  23 #          Copyright (c) 1994-2011 AT&T Intellectual Property          #
  24 #                      and is licensed under the                       #
  25 #                 Eclipse Public License, Version 1.0                  #
  26 #                    by AT&T Intellectual Property                     #
  27 #                                                                      #
  28 #                A copy of the License is available at                 #
  29 #          http://www.eclipse.org/org/documents/epl-v10.html           #
  30 #         (with md5 checksum b35adb5213ca9657e911e9befb180842)         #
  31 #                                                                      #
  32 #              Information and Software Systems Research               #
  33 #                            AT&T Research                             #
  34 #                           Florham Park NJ                            #
  35 #                                                                      #
  36 #               Glenn Fowler <glenn.s.fowler@gmail.com>                #
  37 #                                                                      #
  38 ########################################################################
  39 ### this script contains archaic constructs that work with all sh variants ###
  40 # mamprobe - generate MAM cc probe info
  41 # Glenn Fowler <gsf@research.att.com>
  42
  43 case $-:$BASH_VERSION in
  44 *x*:[0123456789]*)      : bash set -x is broken :; set +ex ;;
  45 esac
  46
  47 command=mamprobe
  48
  49 # check the options
  50
  51 opt=
  52
  53 case `(getopts '[-][123:xyz]' opt --xyz; echo 0$opt) 2>/dev/null` in
  54 0123)   USAGE=$'
  55 [-?
  56 @(#)$Id: mamprobe (AT&T Labs Research) 2011-02-11 $
  57 ]
  58 [+NAME?mamprobe - generate MAM cc probe info]
  59 [+DESCRIPTION?\bmamprobe\b generates MAM (make abstract machine) \bcc\b(1)
  60         probe information for use by \bmamake\b(1). \acc-path\a is the
  61         absolute path of the probed compiler and \ainfo-file\a is where
  62         the information is placed. \ainfo-file\a is usually
  63         \b$INSTALLROOT/lib/probe/C/mam/\b\ahash\a, where \ahash\a is a hash
  64         of \acc-path\a. Any \ainfo-file\a directories are created if needed.
  65         If \ainfo-file\a is \b-\b then the probe information is written to
  66         the standard output.]
  67 [+?\bmamprobe\b and \bmamake\b are used in the bootstrap phase of
  68         \bpackage\b(1) installation before \bnmake\b(1) is built. The
  69         probed variable names are the \bnmake\b(1) names with a \bmam_\b
  70         prefix, \bCC\b converted to \bcc\b,  and \b.\b converted to \b_\b.
  71         Additional variables are:]{
  72                 [+_hosttype_?the \bpackage\b(1) host type]
  73                 [+mam_cc_L?\b-L\b\adir\a supported]
  74                 [+STDCAT?command to execute for \bcat\b(1); prefixed by
  75                         \bexecrate\b(1) on \b.exe\b challenged systems]
  76                 [+STDCHMOD?command to execute for \bchmod\b(1); prefixed by
  77                         \bexecrate\b(1) on \b.exe\b challenged systems]
  78                 [+STDCMP?command to execute for \bcmp\b(1); prefixed by
  79                         \bexecrate\b(1) on \b.exe\b challenged systems]
  80                 [+STDCP?command to execute for \bcp\b(1); prefixed by
  81                         \bexecrate\b(1) on \b.exe\b challenged systems]
  82                 [+STDED?command to execute for \bed\b(1) or \bex\b(1)]
  83                 [+STDEDFLAGS?flags for \bSTDED\b]
  84                 [+STDLN?command to execute for \bln\b(1); prefixed by
  85                         \bexecrate\b(1) on \b.exe\b challenged systems]
  86                 [+STDMV?command to execute for \bmv\b(1); prefixed by
  87                         \bexecrate\b(1) on \b.exe\b challenged systems]
  88                 [+STDRM?command to execute for \brm\b(1); prefixed by
  89                         \bexecrate\b(1) on \b.exe\b challenged systems]
  90 }
  91 [d:debug?Enable probe script debug trace.]
  92
  93 info-file cc-path
  94
  95 [+SEE ALSO?\bexecrate\b(1), \bpackage\b(1), \bmamake\b(1), \bnmake\b(1),
  96         \bprobe\b(1)]
  97 '
  98         while   getopts -a "$command" "$USAGE" OPT
  99         do      case $OPT in
 100                 d)      opt=-d ;;
 101                 esac
 102         done
 103         shift `expr $OPTIND - 1`
 104         ;;
 105 *)      while   :
 106         do      case $# in
 107                 0)      break ;;
 108                 esac
 109                 case $1 in
 110                 --)     shift
 111                         break
 112                         ;;
 113                 -)      break
 114                         ;;
 115                 -d)     opt=-d
 116                         ;;
 117                 -*)     echo $command: $1: unknown option >&2
 118                         ;;
 119                 *)      break
 120                         ;;
 121                 esac
 122                 set ''
 123                 break
 124         done
 125         ;;
 126 esac
 127
 128 # check the args
 129
 130 case $1 in
 131 -)      ;;
 132 /*)     ;;
 133 *)      set '' ;;
 134 esac
 135 case $2 in
 136 /*)     ;;
 137 *)      set '' ;;
 138 esac
 139 case $# in
 140 0|1)    echo "Usage: $command info-file cc-path" >&2; exit 2 ;;
 141 esac
 142 info=$1
 143 shift
 144 cc=$*
 145
 146 # find the make probe script
 147
 148 ifs=${IFS-'
 149          '}
 150 IFS=:
 151 set $PATH
 152 IFS=$ifs
 153 script=lib/probe/C/make/probe
 154 while   :
 155 do      case $# in
 156         0)      echo "$0: ../$script: probe script not found on PATH" >&2
 157                 exit 1
 158                 ;;
 159         esac
 160         case $1 in
 161         '')     continue ;;
 162         esac
 163         makeprobe=`echo $1 | sed 's,[^/]*$,'$script,`
 164         if      test -x $makeprobe
 165         then    break
 166         fi
 167         shift
 168 done
 169
 170 # create the info dir if necessary
 171
 172 case $info in
 173 /*)     i=X$info
 174         ifs=${IFS-'
 175          '}
 176         IFS=/
 177         set $i
 178         IFS=$ifs
 179         while   :
 180         do      i=$1
 181                 shift
 182                 case $i in
 183                 X)      break ;;
 184                 esac
 185         done
 186         case $info in
 187         //*)    path=/ ;;
 188         *)      path= ;;
 189         esac
 190         while   :
 191         do      case $# in
 192                 0|1)    break ;;
 193                 esac
 194                 comp=$1
 195                 shift
 196                 case $comp in
 197                 '')     continue ;;
 198                 esac
 199                 path=$path/$comp
 200                 if      test ! -d $path
 201                 then    mkdir $path || exit
 202                 fi
 203         done
 204         ;;
 205 esac
 206
 207 # generate info in a tmp file and rename when finished
 208
 209 case $info in
 210 -)      ;;
 211 *)      tmp=/tmp/mam$$
 212         trap "exec >/dev/null; rm -f $tmp" 0 1 2 3 15
 213         exec > $tmp
 214         echo "probing C language processor $cc for mam information" >&2
 215         ;;
 216 esac
 217
 218 echo "note generated by $0 for $cc"
 219
 220 (
 221         set '' $opt $cc
 222         shift
 223         . $makeprobe "$@"
 224
 225         case " $CC_DIALECT " in
 226         *" -L "*)       echo "CC.L = 1" ;;
 227         esac
 228
 229 ) | sed \
 230         -e '/^CC\./!d' \
 231         -e 's/^CC./setv mam_cc_/' \
 232         -e 's/^\([^=.]*\)\./\1_/' \
 233         -e 's/^\([^=.]*\)\./\1_/' \
 234         -e 's/ =//' \
 235         -e 's/\$("\([^"]*\)")/\1/g' \
 236         -e 's/\$(\([^)]*\))/${\1}/g' \
 237         -e 's/\${CC\./${mam_cc_}/g'
 238
 239 echo 'setv _hosttype_ ${mam_cc_HOSTTYPE}'
 240
 241 # STD* are standard commands/flags with possible execrate(1)
 242
 243 if      (
 244 ed <<!
 245 q
 246 !
 247 ) < /dev/null > /dev/null 2>&1
 248 then    STDED=ed
 249 else    STDED=ex
 250 fi
 251 STDEDFLAGS=-
 252 set STDCAT cat STDCHMOD chmod STDCMP cmp STDCP cp STDLN ln STDMV mv STDRM rm
 253 while   :
 254 do      case $# in
 255         0|1)    break ;;
 256         esac
 257         p=$2
 258         for d in /bin /usr/bin /usr/sbin
 259         do      if      test -x $d/$p
 260                 then    p=$d/$p
 261                         break
 262                 fi
 263         done
 264         eval $1=\$p
 265         shift
 266         shift
 267 done
 268 if      execrate
 269 then    for n in STDCAT STDCHMOD STDCMP STDCP STDLN STDMV STDRM
 270         do      eval $n=\"execrate \$$n\"
 271         done
 272 fi
 273 for n in STDCAT STDCHMOD STDCMP STDCP STDED STDEDFLAGS STDLN STDMV STDRM
 274 do      eval echo setv \$n \$$n
 275 done
 276
 277 # all done
 278
 279 case $info in
 280 -)      ;;
 281 *)      exec >/dev/null
 282         test -f $info && rm -f $info
 283         cp $tmp $info
 284         chmod -w $info
 285         ;;
 286 esac