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, 2009
  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 3, 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 COPYING3.  If not see
  25 # <http://www.gnu.org/licenses/>.
  26 #
  27 # # # # # # # # # # # # # # # # # # # # #
  28
  29 # Usage: fixinc.sh output-dir input-dir
  30 #
  31 # Directory in which to store the results.
  32 # Fail if no arg to specify a directory for the output.
  33 if [ "x$1" = "x" ]
  34 then
  35   echo fixincludes: no output directory specified
  36   exit 1
  37 fi
  38
  39 LIB=${1}
  40 shift
  41
  42 # Make sure it exists.
  43 if [ ! -d $LIB ]; then
  44   mkdir -p $LIB || {
  45     echo fixincludes:  output dir '`'$LIB"' cannot be created"
  46     exit 1
  47   }
  48 else
  49   ( cd $LIB && touch DONE && rm DONE ) || {
  50     echo fixincludes:  output dir '`'$LIB"' is an invalid directory"
  51     exit 1
  52   }
  53 fi
  54
  55 if test -z "$VERBOSE"
  56 then
  57   VERBOSE=2
  58   export VERBOSE
  59 else
  60   case "$VERBOSE" in
  61   [0-9] ) : ;;
  62   * )  VERBOSE=3 ;;
  63   esac
  64 fi
  65
  66 # Define what target system we're fixing.
  67 #
  68 if test -r ./Makefile; then
  69   target_canonical="`sed -n -e 's,^target[      ]*=[    ]*\(.*\)$,\1,p' < Makefile`"
  70 fi
  71
  72 # If not from the Makefile, then try config.guess
  73 #
  74 if test -z "${target_canonical}" ; then
  75   if test -x ./config.guess ; then
  76     target_canonical="`config.guess`" ; fi
  77   test -z "${target_canonical}" && target_canonical=unknown
  78 fi
  79 export target_canonical
  80
  81 # # # # # # # # # # # # # # # # # # # # #
  82 #
  83 # Define PWDCMD as a command to use to get the working dir
  84 # in the form that we want.
  85 PWDCMD=${PWDCMD-pwd}
  86
  87 case "`$PWDCMD`" in
  88 //*)
  89     # On an Apollo, discard everything before `/usr'.
  90     PWDCMD="eval pwd | sed -e 's,.*/usr/,/usr/,'"
  91     ;;
  92 esac
  93
  94 # Original directory.
  95 ORIGDIR=`${PWDCMD}`
  96 export ORIGDIR
  97 FIXINCL=`${PWDCMD}`/fixincl
  98 if [ ! -x $FIXINCL ] ; then
  99   echo "Cannot find fixincl" >&2
 100   exit 1
 101 fi
 102 export FIXINCL
 103
 104 # Make LIB absolute only if needed to avoid problems with the amd.
 105 case $LIB in
 106 /*)
 107     ;;
 108 *)
 109     cd $LIB; LIB=`${PWDCMD}`
 110     ;;
 111 esac
 112
 113 if test $VERBOSE -gt 0
 114 then echo Fixing headers into ${LIB} for ${target_canonical} target ; fi
 115
 116 # Determine whether this system has symbolic links.
 117 if test -n "$DJDIR"; then
 118   LINKS=false
 119 elif ln -s X $LIB/ShouldNotExist 2>/dev/null; then
 120   rm -f $LIB/ShouldNotExist
 121   LINKS=true
 122 elif ln -s X /tmp/ShouldNotExist 2>/dev/null; then
 123   rm -f /tmp/ShouldNotExist
 124   LINKS=true
 125 else
 126   LINKS=false
 127 fi
 128
 129 # # # # # # # # # # # # # # # # # # # # #
 130 #
 131 #  Check to see if the machine_name fix needs to be disabled.
 132 #
 133 #  On some platforms, machine_name doesn't work properly and
 134 #  breaks some of the header files.  Since everything works
 135 #  properly without it, just wipe the macro list to
 136 #  disable the fix.
 137
 138 case "${target_canonical}" in
 139     *-*-vxworks*)
 140         test -f ${MACRO_LIST} &&  echo > ${MACRO_LIST}
 141         ;;
 142 esac
 143
 144
 145 # # # # # # # # # # # # # # # # # # # # #
 146 #
 147 #  In the file macro_list are listed all the predefined
 148 #  macros that are not in the C89 reserved namespace (the reserved
 149 #  namespace is all identifiers beginnning with two underscores or one
 150 #  underscore followed by a capital letter).  A regular expression to find
 151 #  any of those macros in a header file is written to MN_NAME_PAT.
 152 #
 153 #  Note dependency on ASCII. \012 = newline.
 154 #  tr ' ' '\n' is, alas, not portable.
 155
 156 if test -s ${MACRO_LIST}
 157 then
 158   if test $VERBOSE -gt 0; then
 159     echo "Forbidden identifiers: `tr '\012' ' ' < ${MACRO_LIST}`"
 160   fi
 161   MN_NAME_PAT="`sed 's/^/\\\\</; s/$/\\\\>/; $!s/$/|/' \
 162       < ${MACRO_LIST} | tr -d '\012'`"
 163   export MN_NAME_PAT
 164 else
 165   if test $VERBOSE -gt 0
 166   then echo "No forbidden identifiers defined by this target" ; fi
 167 fi
 168
 169 # # # # # # # # # # # # # # # # # # # # #
 170 #
 171 #  Search each input directory for broken header files.
 172 #  This loop ends near the end of the file.
 173 #
 174 if test $# -eq 0
 175 then
 176     INPUTLIST="/usr/include"
 177 else
 178     INPUTLIST="$@"
 179 fi
 180
 181 for INPUT in ${INPUTLIST} ; do
 182
 183 cd ${ORIGDIR}
 184
 185 #  Make sure a directory exists before changing into it,
 186 #  otherwise Solaris2 will fail-exit the script.
 187 #
 188 if [ ! -d ${INPUT} ]; then
 189   continue
 190 fi
 191 cd ${INPUT}
 192
 193 INPUT=`${PWDCMD}`
 194 export INPUT
 195
 196 #
 197 # # # # # # # # # # # # # # # # # # # # #
 198 #
 199 if test $VERBOSE -gt 1
 200 then echo Finding directories and links to directories ; fi
 201
 202 # Find all directories and all symlinks that point to directories.
 203 # Put the list in $all_dirs.
 204 # Each time we find a symlink, add it to newdirs
 205 # so that we do another find within the dir the link points to.
 206 # Note that $all_dirs may have duplicates in it;
 207 # later parts of this file are supposed to ignore them.
 208 dirs="."
 209 levels=2
 210 all_dirs=""
 211 search_dirs=""
 212
 213 while [ -n "$dirs" ] && [ $levels -gt 0 ]
 214 do
 215   levels=`expr $levels - 1`
 216   newdirs=
 217   for d in $dirs
 218   do
 219     if test $VERBOSE -gt 1
 220     then echo " Searching $INPUT/$d" ; fi
 221
 222     # Find all directories under $d, relative to $d, excluding $d itself.
 223     # (The /. is needed after $d in case $d is a symlink.)
 224     all_dirs="$all_dirs `find $d/. -type d -print | \
 225                sed -e '/\/\.$/d' -e 's@/./@/@g'`"
 226     # Find all links to directories.
 227     # Using `-exec test -d' in find fails on some systems,
 228     # and trying to run test via sh fails on others,
 229     # so this is the simplest alternative left.
 230     # First find all the links, then test each one.
 231     theselinks=
 232     $LINKS && \
 233       theselinks=`find $d/. -type l -print | sed -e 's@/./@/@g'`
 234     for d1 in $theselinks --dummy--
 235     do
 236       # If the link points to a directory,
 237       # add that dir to $newdirs
 238       if [ -d $d1 ]
 239       then
 240         all_dirs="$all_dirs $d1"
 241         if [ "`ls -ld $d1 | sed -n 's/.*-> //p'`" != "." ]
 242         then
 243           newdirs="$newdirs $d1"
 244           search_dirs="$search_dirs $d1"
 245         fi
 246       fi
 247     done
 248   done
 249
 250   dirs="$newdirs"
 251 done
 252
 253 # # # # # # # # # # # # # # # # # # # # #
 254 #
 255 dirs=
 256 if test $VERBOSE -gt 2
 257 then echo "All directories (including links to directories):"
 258      echo $all_dirs
 259 fi
 260
 261 for file in $all_dirs; do
 262   rm -rf $LIB/$file
 263   if [ ! -d $LIB/$file ]
 264   then mkdir $LIB/$file
 265   fi
 266 done
 267 mkdir $LIB/root
 268
 269 # # # # # # # # # # # # # # # # # # # # #
 270 #
 271 # treetops gets an alternating list
 272 # of old directories to copy
 273 # and the new directories to copy to.
 274 treetops=". ${LIB}"
 275
 276 if $LINKS; then
 277   if test $VERBOSE -gt 1
 278   then echo 'Making symbolic directory links' ; fi
 279   cwd=`${PWDCMD}`
 280
 281   for sym_link in $search_dirs; do
 282     cd ${INPUT}
 283     dest=`ls -ld ${sym_link} | sed -n 's/.*-> //p'`
 284
 285     # In case $dest is relative, get to ${sym_link}'s dir first.
 286     #
 287     cd ./`echo ${sym_link} | sed 's;/[^/]*$;;'`
 288
 289     # Check that the target directory exists.
 290     # Redirections changed to avoid bug in sh on Ultrix.
 291     #
 292     (cd $dest) > /dev/null 2>&1
 293     if [ $? = 0 ]; then
 294       cd $dest
 295
 296       # full_dest_dir gets the dir that the link actually leads to.
 297       #
 298       full_dest_dir=`${PWDCMD}`
 299
 300       # Canonicalize ${INPUT} now to minimize the time an
 301       # automounter has to change the result of ${PWDCMD}.
 302       #
 303       cinput=`cd ${INPUT}; ${PWDCMD}`
 304
 305       # If a link points to ., make a similar link to .
 306       #
 307       if [ ${full_dest_dir} = ${cinput} ]; then
 308         if test $VERBOSE -gt 2
 309         then echo ${sym_link} '->' . ': Making self link' ; fi
 310         rm -fr ${LIB}/${sym_link} > /dev/null 2>&1
 311         ln -s . ${LIB}/${sym_link} > /dev/null 2>&1
 312
 313       # If link leads back into ${INPUT},
 314       # make a similar link here.
 315       #
 316       elif expr ${full_dest_dir} : "${cinput}/.*" > /dev/null; then
 317         # Y gets the actual target dir name, relative to ${INPUT}.
 318         y=`echo ${full_dest_dir} | sed -n "s&${cinput}/&&p"`
 319         # DOTS is the relative path from ${LIB}/${sym_link} back to ${LIB}.
 320         dots=`echo "${sym_link}" |
 321           sed -e 's@^./@@' -e 's@/./@/@g' -e 's@[^/][^/]*@..@g' -e 's@..$@@'`
 322         if test $VERBOSE -gt 2
 323         then echo ${sym_link} '->' $dots$y ': Making local link' ; fi
 324         rm -fr ${LIB}/${sym_link} > /dev/null 2>&1
 325         ln -s $dots$y ${LIB}/${sym_link} > /dev/null 2>&1
 326
 327       else
 328         # If the link is to a dir $target outside ${INPUT},
 329         # repoint the link at ${INPUT}/root$target
 330         # and process $target into ${INPUT}/root$target
 331         # treat this directory as if it actually contained the files.
 332         #
 333         if test $VERBOSE -gt 2
 334         then echo ${sym_link} '->' root${full_dest_dir} ': Making rooted link'
 335         fi
 336         if [ -d $LIB/root${full_dest_dir} ]
 337         then true
 338         else
 339           dirname=root${full_dest_dir}/
 340           dirmade=.
 341           cd $LIB
 342           while [ x$dirname != x ]; do
 343             component=`echo $dirname | sed -e 's|/.*$||'`
 344             mkdir $component >/dev/null 2>&1
 345             cd $component
 346             dirmade=$dirmade/$component
 347             dirname=`echo $dirname | sed -e 's|[^/]*//*||'`
 348           done
 349         fi
 350
 351         # Duplicate directory structure created in ${LIB}/${sym_link} in new
 352         # root area.
 353         #
 354         for file2 in $all_dirs; do
 355           case $file2 in
 356             ${sym_link}/*)
 357               dupdir=${LIB}/root${full_dest_dir}/`echo $file2 |
 358                       sed -n "s|^${sym_link}/||p"`
 359               if test $VERBOSE -gt 2
 360               then echo "Duplicating ${sym_link}'s ${dupdir}" ; fi
 361               if [ -d ${dupdir} ]
 362               then true
 363               else
 364                 mkdir ${dupdir}
 365               fi
 366               ;;
 367             *)
 368               ;;
 369           esac
 370         done
 371
 372         # Get the path from ${LIB} to ${sym_link}, accounting for symlinks.
 373         #
 374         parent=`echo "${sym_link}" | sed -e 's@/[^/]*$@@'`
 375         libabs=`cd ${LIB}; ${PWDCMD}`
 376         file2=`cd ${LIB}; cd $parent; ${PWDCMD} | sed -e "s@^${libabs}@@"`
 377
 378         # DOTS is the relative path from ${LIB}/${sym_link} back to ${LIB}.
 379         #
 380         dots=`echo "$file2" | sed -e 's@/[^/]*@../@g'`
 381         rm -fr ${LIB}/${sym_link} > /dev/null 2>&1
 382         ln -s ${dots}root${full_dest_dir} ${LIB}/${sym_link} > /dev/null 2>&1
 383         treetops="$treetops ${sym_link} ${LIB}/root${full_dest_dir}"
 384       fi
 385     fi
 386   done
 387 fi
 388
 389 # # # # # # # # # # # # # # # # # # # # #
 390 #
 391 required=
 392 set x $treetops
 393 shift
 394 while [ $# != 0 ]; do
 395   # $1 is an old directory to copy, and $2 is the new directory to copy to.
 396   #
 397   SRCDIR=`cd ${INPUT} ; cd $1 ; ${PWDCMD}`
 398   export SRCDIR
 399
 400   FIND_BASE=$1
 401   export FIND_BASE
 402   shift
 403
 404   DESTDIR=`cd $1;${PWDCMD}`
 405   export DESTDIR
 406   shift
 407
 408   # The same dir can appear more than once in treetops.
 409   # There's no need to scan it more than once.
 410   #
 411   if [ -f ${DESTDIR}/DONE ]
 412   then continue ; fi
 413
 414   touch ${DESTDIR}/DONE
 415   if test $VERBOSE -gt 1
 416   then echo Fixing directory ${SRCDIR} into ${DESTDIR} ; fi
 417
 418   # Check files which are symlinks as well as those which are files.
 419   #
 420   cd ${INPUT}
 421   required="$required `if $LINKS; then
 422     find ${FIND_BASE}/. -name '*.h' \( -type f -o -type l \) -print
 423   else
 424     find ${FIND_BASE}/. -name '*.h' -type f -print
 425   fi | \
 426     sed -e 's;/\./;/;g' -e 's;//*;/;g' | \
 427     ${FIXINCL}`"
 428 done
 429
 430 ## Make sure that any include files referenced using double quotes
 431 ## exist in the fixed directory.  This comes last since otherwise
 432 ## we might end up deleting some of these files "because they don't
 433 ## need any change."
 434 set x `echo $required`
 435 shift
 436 while [ $# != 0 ]; do
 437   newreq=
 438   while [ $# != 0 ]; do
 439     # $1 is the directory to copy from,
 440     # $2 is the unfixed file,
 441     # $3 is the fixed file name.
 442     #
 443     cd ${INPUT}
 444     cd $1
 445     if [ -f $2 ] ; then
 446       if [ -r $2 ] && [ ! -r $3 ]; then
 447         cp $2 $3 >/dev/null 2>&1 || echo "Can't copy $2" >&2
 448         chmod +w $3 2>/dev/null
 449         chmod a+r $3 2>/dev/null
 450         if test $VERBOSE -gt 2
 451         then echo Copied $2 ; fi
 452         for include in `egrep '^[       ]*#[    ]*include[      ]*"[^/]' $3 |
 453              sed -e 's/^[       ]*#[    ]*include[      ]*"\([^"]*\)".*$/\1/'`
 454         do
 455           dir=`echo $2 | sed -e s'|/[^/]*$||'`
 456           dir2=`echo $3 | sed -e s'|/[^/]*$||'`
 457           newreq="$newreq $1 $dir/$include $dir2/$include"
 458         done
 459       fi
 460     fi
 461     shift; shift; shift
 462   done
 463   set x $newreq
 464   shift
 465 done
 466
 467 if test $VERBOSE -gt 2
 468 then echo 'Cleaning up DONE files.' ; fi
 469 cd $LIB
 470 # Look for files case-insensitively, for the benefit of
 471 # DOS/Windows filesystems.
 472 find . -name '[Dd][Oo][Nn][Ee]' -exec rm -f '{}' ';'
 473
 474 if test $VERBOSE -gt 1
 475 then echo 'Cleaning up unneeded directories:' ; fi
 476 cd $LIB
 477 all_dirs=`find . -type d \! -name '.' -print | sort -r`
 478 for file in $all_dirs; do
 479   if rmdir $LIB/$file > /dev/null
 480   then
 481     test $VERBOSE -gt 3 && echo "  removed $file"
 482   fi
 483 done 2> /dev/null
 484
 485 # On systems which don't support symlinks, `find' may barf
 486 # if called with "-type l" predicate.  So only use that if
 487 # we know we should look for symlinks.
 488 if $LINKS; then
 489   test $VERBOSE -gt 2 && echo "Removing unused symlinks"
 490
 491   all_dirs=`find . -type l -print`
 492   for file in $all_dirs
 493   do
 494     if test ! -d $file
 495     then
 496       rm -f $file
 497       test $VERBOSE -gt 3 && echo "  removed $file"
 498       rmdir `dirname $file` > /dev/null && \
 499            test $VERBOSE -gt 3 && \
 500            echo "  removed `dirname $file`"
 501     fi
 502   done 2> /dev/null
 503 fi
 504
 505 if test $VERBOSE -gt 0
 506 then echo fixincludes is done ; fi
 507
 508 # # # # # # # # # # # # # # # # # # # # #
 509 #
 510 # End of for INPUT directories
 511 #
 512 done
 513 #
 514 # # # # # # # # # # # # # # # # # # # # #