fixincludes/fixinc.in

   1 #!/bin/sh
   2 #
   3 # Install modified versions of certain ANSI-incompatible system header
   4 # files which are fixed to work correctly with ANSI C and placed in a
   5 # directory that GCC will search.
   6 #
   7 # See README-fixinc for more information.
   8 #
   9 #  fixincludes copyright (c) 1998, 1999, 2000, 2002
  10 #  The Free Software Foundation, Inc.
  11 #
  12 # fixincludes is free software.
  13 #
  14 # You may redistribute it and/or modify it under the terms of the
  15 # GNU General Public License, as published by the Free Software
  16 # Foundation; either version 2, or (at your option) any later version.
  17 #
  18 # fixincludes is distributed in the hope that it will be useful,
  19 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  21 # See the GNU General Public License for more details.
  22 #
  23 # You should have received a copy of the GNU General Public License
  24 # along with fixincludes.  See the file "COPYING".  If not,
  25 # write to:  The Free Software Foundation, Inc.,
  26 #            59 Temple Place - Suite 330,
  27 #            Boston,  MA  02111-1307, USA.
  28 #
  29 # # # # # # # # # # # # # # # # # # # # #
  30
  31 # Usage: fixinc.sh output-dir input-dir
  32 #
  33 # Directory in which to store the results.
  34 # Fail if no arg to specify a directory for the output.
  35 if [ "x$1" = "x" ]
  36 then
  37   echo fixincludes: no output directory specified
  38   exit 1
  39 fi
  40
  41 LIB=${1}
  42 shift
  43
  44 # Make sure it exists.
  45 if [ ! -d $LIB ]; then
  46   mkdir $LIB || {
  47     echo fixincludes:  output dir '`'$LIB"' cannot be created"
  48     exit 1
  49   }
  50 else
  51   ( cd $LIB && touch DONE && rm DONE ) || {
  52     echo fixincludes:  output dir '`'$LIB"' is an invalid directory"
  53     exit 1
  54   }
  55 fi
  56
  57 if test -z "$VERBOSE"
  58 then
  59   VERBOSE=2
  60   export VERBOSE
  61 else
  62   case "$VERBOSE" in
  63   [0-9] ) : ;;
  64   * )  VERBOSE=3 ;;
  65   esac
  66 fi
  67
  68 # Define what target system we're fixing.
  69 #
  70 if test -r ./Makefile; then
  71   target_canonical="`sed -n -e 's,^target[      ]*=[    ]*\(.*\)$,\1,p' < Makefile`"
  72 fi
  73
  74 # If not from the Makefile, then try config.guess
  75 #
  76 if test -z "${target_canonical}" ; then
  77   if test -x ./config.guess ; then
  78     target_canonical="`config.guess`" ; fi
  79   test -z "${target_canonical}" && target_canonical=unknown
  80 fi
  81 export target_canonical
  82
  83 # # # # # # # # # # # # # # # # # # # # #
  84 #
  85 # Define PWDCMD as a command to use to get the working dir
  86 # in the form that we want.
  87 PWDCMD=${PWDCMD-pwd}
  88
  89 case "`$PWDCMD`" in
  90 //*)
  91     # On an Apollo, discard everything before `/usr'.
  92     PWDCMD="eval pwd | sed -e 's,.*/usr/,/usr/,'"
  93     ;;
  94 esac
  95
  96 # Original directory.
  97 ORIGDIR=`${PWDCMD}`
  98 export ORIGDIR
  99 FIXINCL=`${PWDCMD}`/fixincl
 100 if [ ! -x $FIXINCL ] ; then
 101   echo "Cannot find fixincl" >&2
 102   exit 1
 103 fi
 104 export FIXINCL
 105
 106 # Make LIB absolute only if needed to avoid problems with the amd.
 107 case $LIB in
 108 /*)
 109     ;;
 110 *)
 111     cd $LIB; LIB=`${PWDCMD}`
 112     ;;
 113 esac
 114
 115 if test $VERBOSE -gt 0
 116 then echo Fixing headers into ${LIB} for ${target_canonical} target ; fi
 117
 118 # Determine whether this system has symbolic links.
 119 if test -n "$DJDIR"; then
 120   LINKS=false
 121 elif ln -s X $LIB/ShouldNotExist 2>/dev/null; then
 122   rm -f $LIB/ShouldNotExist
 123   LINKS=true
 124 elif ln -s X /tmp/ShouldNotExist 2>/dev/null; then
 125   rm -f /tmp/ShouldNotExist
 126   LINKS=true
 127 else
 128   LINKS=false
 129 fi
 130
 131 # # # # # # # # # # # # # # # # # # # # #
 132 #
 133 #  In the file macro_list are listed all the predefined
 134 #  macros that are not in the C89 reserved namespace (the reserved
 135 #  namespace is all identifiers beginnning with two underscores or one
 136 #  underscore followed by a capital letter).  A regular expression to find
 137 #  any of those macros in a header file is written to MN_NAME_PAT.
 138 #
 139 #  Note dependency on ASCII. \012 = newline.
 140 #  tr ' ' '\n' is, alas, not portable.
 141
 142 if test -s ${MACRO_LIST}
 143 then
 144   if test $VERBOSE -gt 0; then
 145     echo "Forbidden identifiers: `tr '\012' ' ' < ${MACRO_LIST}`"
 146   fi
 147   MN_NAME_PAT="`sed 's/^/\\\\</; s/$/\\\\>/; $!s/$/|/' \
 148       < ${MACRO_LIST} | tr -d '\012'`"
 149   export MN_NAME_PAT
 150 else
 151   if test $VERBOSE -gt 0
 152   then echo "No forbidden identifiers defined by this target" ; fi
 153 fi
 154
 155 # # # # # # # # # # # # # # # # # # # # #
 156 #
 157 #  Search each input directory for broken header files.
 158 #  This loop ends near the end of the file.
 159 #
 160 if test $# -eq 0
 161 then
 162     INPUTLIST="/usr/include"
 163 else
 164     INPUTLIST="$@"
 165 fi
 166
 167 for INPUT in ${INPUTLIST} ; do
 168
 169 cd ${ORIGDIR}
 170
 171 #  Make sure a directory exists before changing into it,
 172 #  otherwise Solaris2 will fail-exit the script.
 173 #
 174 if [ ! -d ${INPUT} ]; then
 175   continue
 176 fi
 177 cd ${INPUT}
 178
 179 INPUT=`${PWDCMD}`
 180 export INPUT
 181
 182 #
 183 # # # # # # # # # # # # # # # # # # # # #
 184 #
 185 if test $VERBOSE -gt 1
 186 then echo Finding directories and links to directories ; fi
 187
 188 # Find all directories and all symlinks that point to directories.
 189 # Put the list in $all_dirs.
 190 # Each time we find a symlink, add it to newdirs
 191 # so that we do another find within the dir the link points to.
 192 # Note that $all_dirs may have duplicates in it;
 193 # later parts of this file are supposed to ignore them.
 194 dirs="."
 195 levels=2
 196 all_dirs=""
 197 search_dirs=""
 198
 199 while [ -n "$dirs" ] && [ $levels -gt 0 ]
 200 do
 201   levels=`expr $levels - 1`
 202   newdirs=
 203   for d in $dirs
 204   do
 205     if test $VERBOSE -gt 1
 206     then echo " Searching $INPUT/$d" ; fi
 207
 208     # Find all directories under $d, relative to $d, excluding $d itself.
 209     # (The /. is needed after $d in case $d is a symlink.)
 210     all_dirs="$all_dirs `find $d/. -type d -print | \
 211                sed -e '/\/\.$/d' -e 's@/./@/@g'`"
 212     # Find all links to directories.
 213     # Using `-exec test -d' in find fails on some systems,
 214     # and trying to run test via sh fails on others,
 215     # so this is the simplest alternative left.
 216     # First find all the links, then test each one.
 217     theselinks=
 218     $LINKS && \
 219       theselinks=`find $d/. -type l -print | sed -e 's@/./@/@g'`
 220     for d1 in $theselinks --dummy--
 221     do
 222       # If the link points to a directory,
 223       # add that dir to $newdirs
 224       if [ -d $d1 ]
 225       then
 226         all_dirs="$all_dirs $d1"
 227         if [ "`ls -ld $d1 | sed -n 's/.*-> //p'`" != "." ]
 228         then
 229           newdirs="$newdirs $d1"
 230           search_dirs="$search_dirs $d1"
 231         fi
 232       fi
 233     done
 234   done
 235
 236   dirs="$newdirs"
 237 done
 238
 239 # # # # # # # # # # # # # # # # # # # # #
 240 #
 241 dirs=
 242 if test $VERBOSE -gt 2
 243 then echo "All directories (including links to directories):"
 244      echo $all_dirs
 245 fi
 246
 247 for file in $all_dirs; do
 248   rm -rf $LIB/$file
 249   if [ ! -d $LIB/$file ]
 250   then mkdir $LIB/$file
 251   fi
 252 done
 253 mkdir $LIB/root
 254
 255 # # # # # # # # # # # # # # # # # # # # #
 256 #
 257 # treetops gets an alternating list
 258 # of old directories to copy
 259 # and the new directories to copy to.
 260 treetops=". ${LIB}"
 261
 262 if $LINKS; then
 263   if test $VERBOSE -gt 1
 264   then echo 'Making symbolic directory links' ; fi
 265   cwd=`${PWDCMD}`
 266
 267   for sym_link in $search_dirs; do
 268     cd ${INPUT}
 269     dest=`ls -ld ${sym_link} | sed -n 's/.*-> //p'`
 270
 271     # In case $dest is relative, get to ${sym_link}'s dir first.
 272     #
 273     cd ./`echo ${sym_link} | sed 's;/[^/]*$;;'`
 274
 275     # Check that the target directory exists.
 276     # Redirections changed to avoid bug in sh on Ultrix.
 277     #
 278     (cd $dest) > /dev/null 2>&1
 279     if [ $? = 0 ]; then
 280       cd $dest
 281
 282       # full_dest_dir gets the dir that the link actually leads to.
 283       #
 284       full_dest_dir=`${PWDCMD}`
 285
 286       # Canonicalize ${INPUT} now to minimize the time an
 287       # automounter has to change the result of ${PWDCMD}.
 288       #
 289       cinput=`cd ${INPUT}; ${PWDCMD}`
 290
 291       # If a link points to ., make a similar link to .
 292       #
 293       if [ ${full_dest_dir} = ${cinput} ]; then
 294         if test $VERBOSE -gt 2
 295         then echo ${sym_link} '->' . ': Making self link' ; fi
 296         rm -fr ${LIB}/${sym_link} > /dev/null 2>&1
 297         ln -s . ${LIB}/${sym_link} > /dev/null 2>&1
 298
 299       # If link leads back into ${INPUT},
 300       # make a similar link here.
 301       #
 302       elif expr ${full_dest_dir} : "${cinput}/.*" > /dev/null; then
 303         # Y gets the actual target dir name, relative to ${INPUT}.
 304         y=`echo ${full_dest_dir} | sed -n "s&${cinput}/&&p"`
 305         # DOTS is the relative path from ${LIB}/${sym_link} back to ${LIB}.
 306         dots=`echo "${sym_link}" |
 307           sed -e 's@^./@@' -e 's@/./@/@g' -e 's@[^/][^/]*@..@g' -e 's@..$@@'`
 308         if test $VERBOSE -gt 2
 309         then echo ${sym_link} '->' $dots$y ': Making local link' ; fi
 310         rm -fr ${LIB}/${sym_link} > /dev/null 2>&1
 311         ln -s $dots$y ${LIB}/${sym_link} > /dev/null 2>&1
 312
 313       else
 314         # If the link is to a dir $target outside ${INPUT},
 315         # repoint the link at ${INPUT}/root$target
 316         # and process $target into ${INPUT}/root$target
 317         # treat this directory as if it actually contained the files.
 318         #
 319         if test $VERBOSE -gt 2
 320         then echo ${sym_link} '->' root${full_dest_dir} ': Making rooted link'
 321         fi
 322         if [ -d $LIB/root${full_dest_dir} ]
 323         then true
 324         else
 325           dirname=root${full_dest_dir}/
 326           dirmade=.
 327           cd $LIB
 328           while [ x$dirname != x ]; do
 329             component=`echo $dirname | sed -e 's|/.*$||'`
 330             mkdir $component >/dev/null 2>&1
 331             cd $component
 332             dirmade=$dirmade/$component
 333             dirname=`echo $dirname | sed -e 's|[^/]*/||'`
 334           done
 335         fi
 336
 337         # Duplicate directory structure created in ${LIB}/${sym_link} in new
 338         # root area.
 339         #
 340         for file2 in $all_dirs; do
 341           case $file2 in
 342             ${sym_link}/*)
 343               dupdir=${LIB}/root${full_dest_dir}/`echo $file2 |
 344                       sed -n "s|^${sym_link}/||p"`
 345               if test $VERBOSE -gt 2
 346               then echo "Duplicating ${sym_link}'s ${dupdir}" ; fi
 347               if [ -d ${dupdir} ]
 348               then true
 349               else
 350                 mkdir ${dupdir}
 351               fi
 352               ;;
 353             *)
 354               ;;
 355           esac
 356         done
 357
 358         # Get the path from ${LIB} to ${sym_link}, accounting for symlinks.
 359         #
 360         parent=`echo "${sym_link}" | sed -e 's@/[^/]*$@@'`
 361         libabs=`cd ${LIB}; ${PWDCMD}`
 362         file2=`cd ${LIB}; cd $parent; ${PWDCMD} | sed -e "s@^${libabs}@@"`
 363
 364         # DOTS is the relative path from ${LIB}/${sym_link} back to ${LIB}.
 365         #
 366         dots=`echo "$file2" | sed -e 's@/[^/]*@../@g'`
 367         rm -fr ${LIB}/${sym_link} > /dev/null 2>&1
 368         ln -s ${dots}root${full_dest_dir} ${LIB}/${sym_link} > /dev/null 2>&1
 369         treetops="$treetops ${sym_link} ${LIB}/root${full_dest_dir}"
 370       fi
 371     fi
 372   done
 373 fi
 374
 375 # # # # # # # # # # # # # # # # # # # # #
 376 #
 377 required=
 378 set x $treetops
 379 shift
 380 while [ $# != 0 ]; do
 381   # $1 is an old directory to copy, and $2 is the new directory to copy to.
 382   #
 383   SRCDIR=`cd ${INPUT} ; cd $1 ; ${PWDCMD}`
 384   export SRCDIR
 385
 386   FIND_BASE=$1
 387   export FIND_BASE
 388   shift
 389
 390   DESTDIR=`cd $1;${PWDCMD}`
 391   export DESTDIR
 392   shift
 393
 394   # The same dir can appear more than once in treetops.
 395   # There's no need to scan it more than once.
 396   #
 397   if [ -f ${DESTDIR}/DONE ]
 398   then continue ; fi
 399
 400   touch ${DESTDIR}/DONE
 401   if test $VERBOSE -gt 1
 402   then echo Fixing directory ${SRCDIR} into ${DESTDIR} ; fi
 403
 404   # Check files which are symlinks as well as those which are files.
 405   #
 406   cd ${INPUT}
 407   required="$required `if $LINKS; then
 408     find ${FIND_BASE}/. -name '*.h' \( -type f -o -type l \) -print
 409   else
 410     find ${FIND_BASE}/. -name '*.h' -type f -print
 411   fi | \
 412     sed -e 's;/\./;/;g' -e 's;//*;/;g' | \
 413     ${FIXINCL}`"
 414 done
 415
 416 ## Make sure that any include files referenced using double quotes
 417 ## exist in the fixed directory.  This comes last since otherwise
 418 ## we might end up deleting some of these files "because they don't
 419 ## need any change."
 420 set x `echo $required`
 421 shift
 422 while [ $# != 0 ]; do
 423   newreq=
 424   while [ $# != 0 ]; do
 425     # $1 is the directory to copy from,
 426     # $2 is the unfixed file,
 427     # $3 is the fixed file name.
 428     #
 429     cd ${INPUT}
 430     cd $1
 431     if [ -f $2 ] ; then
 432       if [ -r $2 ] && [ ! -r $3 ]; then
 433         cp $2 $3 >/dev/null 2>&1 || echo "Can't copy $2" >&2
 434         chmod +w $3 2>/dev/null
 435         chmod a+r $3 2>/dev/null
 436         if test $VERBOSE -gt 2
 437         then echo Copied $2 ; fi
 438         for include in `egrep '^[       ]*#[    ]*include[      ]*"[^/]' $3 |
 439              sed -e 's/^[       ]*#[    ]*include[      ]*"\([^"]*\)".*$/\1/'`
 440         do
 441           dir=`echo $2 | sed -e s'|/[^/]*$||'`
 442           dir2=`echo $3 | sed -e s'|/[^/]*$||'`
 443           newreq="$newreq $1 $dir/$include $dir2/$include"
 444         done
 445       fi
 446     fi
 447     shift; shift; shift
 448   done
 449   set x $newreq
 450   shift
 451 done
 452
 453 if test $VERBOSE -gt 2
 454 then echo 'Cleaning up DONE files.' ; fi
 455 cd $LIB
 456 # Look for files case-insensitively, for the benefit of
 457 # DOS/Windows filesystems.
 458 find . -name '[Dd][Oo][Nn][Ee]' -exec rm -f '{}' ';'
 459
 460 if test $VERBOSE -gt 1
 461 then echo 'Cleaning up unneeded directories:' ; fi
 462 cd $LIB
 463 all_dirs=`find . -type d \! -name '.' -print | sort -r`
 464 for file in $all_dirs; do
 465   if rmdir $LIB/$file > /dev/null
 466   then
 467     test $VERBOSE -gt 3 && echo "  removed $file"
 468   fi
 469 done 2> /dev/null
 470
 471 # On systems which don't support symlinks, `find' may barf
 472 # if called with "-type l" predicate.  So only use that if
 473 # we know we should look for symlinks.
 474 if $LINKS; then
 475   test $VERBOSE -gt 2 && echo "Removing unused symlinks"
 476
 477   all_dirs=`find . -type l -print`
 478   for file in $all_dirs
 479   do
 480     if test ! -d $file
 481     then
 482       rm -f $file
 483       test $VERBOSE -gt 3 && echo "  removed $file"
 484       rmdir `dirname $file` > /dev/null && \
 485            test $VERBOSE -gt 3 && \
 486            echo "  removed `dirname $file`"
 487     fi
 488   done 2> /dev/null
 489 fi
 490
 491 if test $VERBOSE -gt 0
 492 then echo fixincludes is done ; fi
 493
 494 # # # # # # # # # # # # # # # # # # # # #
 495 #
 496 # End of for INPUT directories
 497 #
 498 done
 499 #
 500 # # # # # # # # # # # # # # # # # # # # #