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