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#!/bin/sh

#

# Install modified versions of certain ANSI-incompatible system header

# files which are fixed to work correctly with ANSI C and placed in a

# directory that GCC will search.

#

# See README-fixinc for more information.

#

#  fixincludes copyright (c) 1998, 1999, 2000, 2002

#  The Free Software Foundation, Inc.

#

# fixincludes is free software.

#

# You may redistribute it and/or modify it under the terms of the

# GNU General Public License, as published by the Free Software

# Foundation; either version 2, or (at your option) any later version.

#

# fixincludes is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

# See the GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with fixincludes.  See the file "COPYING".  If not,

# write to:  The Free Software Foundation, Inc.,

#            51 Franklin Street, Fifth Floor,

#            Boston,  MA  02110-1301, USA.

#

# # # # # # # # # # # # # # # # # # # # #

# Usage: fixinc.sh output-dir input-dir

#

# Directory in which to store the results.

# Fail if no arg to specify a directory for the output.

if [ "x$1" = "x" ]

then

  echo fixincludes: no output directory specified

  exit 1

fi

LIB=${1}

shift

# Make sure it exists.

if [ ! -d $LIB ]; then

  mkdir $LIB || {

    echo fixincludes:  output dir '`'$LIB"' cannot be created"

    exit 1

  }

else

  ( cd $LIB && touch DONE && rm DONE ) || {

    echo fixincludes:  output dir '`'$LIB"' is an invalid directory"

    exit 1

  }

fi

if test -z "$VERBOSE"

then

  VERBOSE=2

  export VERBOSE

else

  case "$VERBOSE" in

  [0-9] ) : ;;

  * )  VERBOSE=3 ;;

  esac

fi

# Define what target system we're fixing.

#

if test -r ./Makefile; then

  target_canonical="`sed -n -e 's,^target[      ]*=[    ]*\(.*\)$,\1,p' < Makefile`"

fi

# If not from the Makefile, then try config.guess

#

if test -z "${target_canonical}" ; then

  if test -x ./config.guess ; then

    target_canonical="`config.guess`" ; fi

  test -z "${target_canonical}" && target_canonical=unknown

fi

export target_canonical

# # # # # # # # # # # # # # # # # # # # #

#

# Define PWDCMD as a command to use to get the working dir

# in the form that we want.

PWDCMD=${PWDCMD-pwd}

case "`$PWDCMD`" in

//*)

    # On an Apollo, discard everything before `/usr'.

    PWDCMD="eval pwd | sed -e 's,.*/usr/,/usr/,'"

    ;;

esac

# Original directory.

ORIGDIR=`${PWDCMD}`

export ORIGDIR

FIXINCL=`${PWDCMD}`/fixincl

if [ ! -x $FIXINCL ] ; then

  echo "Cannot find fixincl" >&2

  exit 1

fi

export FIXINCL

# Make LIB absolute only if needed to avoid problems with the amd.

case $LIB in

/*)

    ;;

*)

    cd $LIB; LIB=`${PWDCMD}`

    ;;

esac

if test $VERBOSE -gt 0

then echo Fixing headers into ${LIB} for ${target_canonical} target ; fi

# Determine whether this system has symbolic links.

if test -n "$DJDIR"; then

  LINKS=false

elif ln -s X $LIB/ShouldNotExist 2>/dev/null; then

  rm -f $LIB/ShouldNotExist

  LINKS=true

elif ln -s X /tmp/ShouldNotExist 2>/dev/null; then

  rm -f /tmp/ShouldNotExist

  LINKS=true

else

  LINKS=false

fi

# # # # # # # # # # # # # # # # # # # # #

#

#  In the file macro_list are listed all the predefined

#  macros that are not in the C89 reserved namespace (the reserved

#  namespace is all identifiers beginnning with two underscores or one

#  underscore followed by a capital letter).  A regular expression to find

#  any of those macros in a header file is written to MN_NAME_PAT.

#

#  Note dependency on ASCII. \012 = newline.

#  tr ' ' '\n' is, alas, not portable.

if test -s ${MACRO_LIST}

then

  if test $VERBOSE -gt 0; then

    echo "Forbidden identifiers: `tr '\012' ' ' < ${MACRO_LIST}`"

  fi

  MN_NAME_PAT="`sed 's/^/\\\\/; $!s/$/|/' \

      < ${MACRO_LIST} | tr -d '\012'`"

  export MN_NAME_PAT

else

  if test $VERBOSE -gt 0

  then echo "No forbidden identifiers defined by this target" ; fi

fi

# # # # # # # # # # # # # # # # # # # # #

#

#  Search each input directory for broken header files.

#  This loop ends near the end of the file.

#

if test $# -eq 0

then

    INPUTLIST="/usr/include"

else

    INPUTLIST="$@"

fi

for INPUT in ${INPUTLIST} ; do

cd ${ORIGDIR}

#  Make sure a directory exists before changing into it,

#  otherwise Solaris2 will fail-exit the script.

#

if [ ! -d ${INPUT} ]; then

  continue

fi

cd ${INPUT}

INPUT=`${PWDCMD}`

export INPUT

#

# # # # # # # # # # # # # # # # # # # # #

#

if test $VERBOSE -gt 1

then echo Finding directories and links to directories ; fi

# Find all directories and all symlinks that point to directories.

# Put the list in $all_dirs.

# Each time we find a symlink, add it to newdirs

# so that we do another find within the dir the link points to.

# Note that $all_dirs may have duplicates in it;

# later parts of this file are supposed to ignore them.

dirs="."

levels=2

all_dirs=""

search_dirs=""

while [ -n "$dirs" ] && [ $levels -gt 0 ]

do

  levels=`expr $levels - 1`

  newdirs=

  for d in $dirs

  do

    if test $VERBOSE -gt 1

    then echo " Searching $INPUT/$d" ; fi

    # Find all directories under $d, relative to $d, excluding $d itself.

    # (The /. is needed after $d in case $d is a symlink.)

    all_dirs="$all_dirs `find $d/. -type d -print | \

               sed -e '/\/\.$/d' -e 's@/./@/@g'`"

    # Find all links to directories.

    # Using `-exec test -d' in find fails on some systems,

    # and trying to run test via sh fails on others,

    # so this is the simplest alternative left.

    # First find all the links, then test each one.

    theselinks=

    $LINKS && \

      theselinks=`find $d/. -type l -print | sed -e 's@/./@/@g'`

    for d1 in $theselinks --dummy--

    do

      # If the link points to a directory,

      # add that dir to $newdirs

      if [ -d $d1 ]

      then

        all_dirs="$all_dirs $d1"

        if [ "`ls -ld $d1 | sed -n 's/.*-> //p'`" != "." ]

        then

          newdirs="$newdirs $d1"

          search_dirs="$search_dirs $d1"

        fi

      fi

    done

  done

  dirs="$newdirs"

done

# # # # # # # # # # # # # # # # # # # # #

#

dirs=

if test $VERBOSE -gt 2

then echo "All directories (including links to directories):"

     echo $all_dirs

fi

for file in $all_dirs; do

  rm -rf $LIB/$file

  if [ ! -d $LIB/$file ]

  then mkdir $LIB/$file

  fi

done

mkdir $LIB/root

# # # # # # # # # # # # # # # # # # # # #

#

# treetops gets an alternating list

# of old directories to copy

# and the new directories to copy to.

treetops=". ${LIB}"

if $LINKS; then

  if test $VERBOSE -gt 1

  then echo 'Making symbolic directory links' ; fi

  cwd=`${PWDCMD}`

  for sym_link in $search_dirs; do

    cd ${INPUT}

    dest=`ls -ld ${sym_link} | sed -n 's/.*-> //p'`

    # In case $dest is relative, get to ${sym_link}'s dir first.

    #

    cd ./`echo ${sym_link} | sed 's;/[^/]*$;;'`

    # Check that the target directory exists.

    # Redirections changed to avoid bug in sh on Ultrix.

    #

    (cd $dest) > /dev/null 2>&1

    if [ $? = 0 ]; then

      cd $dest

      # full_dest_dir gets the dir that the link actually leads to.

      #

      full_dest_dir=`${PWDCMD}`

      # Canonicalize ${INPUT} now to minimize the time an

      # automounter has to change the result of ${PWDCMD}.

      #

      cinput=`cd ${INPUT}; ${PWDCMD}`

      # If a link points to ., make a similar link to .

      #

      if [ ${full_dest_dir} = ${cinput} ]; then

        if test $VERBOSE -gt 2

        then echo ${sym_link} '->' . ': Making self link' ; fi

        rm -fr ${LIB}/${sym_link} > /dev/null 2>&1

        ln -s . ${LIB}/${sym_link} > /dev/null 2>&1

      # If link leads back into ${INPUT},

      # make a similar link here.

      #

      elif expr ${full_dest_dir} : "${cinput}/.*" > /dev/null; then

        # Y gets the actual target dir name, relative to ${INPUT}.

        y=`echo ${full_dest_dir} | sed -n "s&${cinput}/&&p"`

        # DOTS is the relative path from ${LIB}/${sym_link} back to ${LIB}.

        dots=`echo "${sym_link}" |

          sed -e 's@^./@@' -e 's@/./@/@g' -e 's@[^/][^/]*@..@g' -e 's@..$@@'`

        if test $VERBOSE -gt 2

        then echo ${sym_link} '->' $dots$y ': Making local link' ; fi

        rm -fr ${LIB}/${sym_link} > /dev/null 2>&1

        ln -s $dots$y ${LIB}/${sym_link} > /dev/null 2>&1

      else

        # If the link is to a dir $target outside ${INPUT},

        # repoint the link at ${INPUT}/root$target

        # and process $target into ${INPUT}/root$target

        # treat this directory as if it actually contained the files.

        #

        if test $VERBOSE -gt 2

        then echo ${sym_link} '->' root${full_dest_dir} ': Making rooted link'

        fi

        if [ -d $LIB/root${full_dest_dir} ]

        then true

        else

          dirname=root${full_dest_dir}/

          dirmade=.

          cd $LIB

          while [ x$dirname != x ]; do

            component=`echo $dirname | sed -e 's|/.*$||'`

            mkdir $component >/dev/null 2>&1

            cd $component

            dirmade=$dirmade/$component

            dirname=`echo $dirname | sed -e 's|[^/]*/||'`

          done

        fi

        # Duplicate directory structure created in ${LIB}/${sym_link} in new

        # root area.

        #

        for file2 in $all_dirs; do

          case $file2 in

            ${sym_link}/*)

              dupdir=${LIB}/root${full_dest_dir}/`echo $file2 |

                      sed -n "s|^${sym_link}/||p"`

              if test $VERBOSE -gt 2

              then echo "Duplicating ${sym_link}'s ${dupdir}" ; fi

              if [ -d ${dupdir} ]

              then true

              else

                mkdir ${dupdir}

              fi

              ;;

            *)

              ;;

          esac

        done

        # Get the path from ${LIB} to ${sym_link}, accounting for symlinks.

        #

        parent=`echo "${sym_link}" | sed -e 's@/[^/]*$@@'`

        libabs=`cd ${LIB}; ${PWDCMD}`

        file2=`cd ${LIB}; cd $parent; ${PWDCMD} | sed -e "s@^${libabs}@@"`

        # DOTS is the relative path from ${LIB}/${sym_link} back to ${LIB}.

        #

        dots=`echo "$file2" | sed -e 's@/[^/]*@../@g'`

        rm -fr ${LIB}/${sym_link} > /dev/null 2>&1

        ln -s ${dots}root${full_dest_dir} ${LIB}/${sym_link} > /dev/null 2>&1

        treetops="$treetops ${sym_link} ${LIB}/root${full_dest_dir}"

      fi

    fi

  done

fi

# # # # # # # # # # # # # # # # # # # # #

#

required=

set x $treetops

shift

while [ $# != 0 ]; do

  # $1 is an old directory to copy, and $2 is the new directory to copy to.

  #

  SRCDIR=`cd ${INPUT} ; cd $1 ; ${PWDCMD}`

  export SRCDIR

  FIND_BASE=$1

  export FIND_BASE

  shift

  DESTDIR=`cd $1;${PWDCMD}`

  export DESTDIR

  shift

  # The same dir can appear more than once in treetops.

  # There's no need to scan it more than once.

  #

  if [ -f ${DESTDIR}/DONE ]

  then continue ; fi

  touch ${DESTDIR}/DONE

  if test $VERBOSE -gt 1

  then echo Fixing directory ${SRCDIR} into ${DESTDIR} ; fi

  # Check files which are symlinks as well as those which are files.

  #

  cd ${INPUT}

  required="$required `if $LINKS; then

    find ${FIND_BASE}/. -name '*.h' \( -type f -o -type l \) -print

  else

    find ${FIND_BASE}/. -name '*.h' -type f -print

  fi | \

    sed -e 's;/\./;/;g' -e 's;//*;/;g' | \

    ${FIXINCL}`"

done

## Make sure that any include files referenced using double quotes

## exist in the fixed directory.  This comes last since otherwise

## we might end up deleting some of these files "because they don't

## need any change."

set x `echo $required`

shift

while [ $# != 0 ]; do

  newreq=

  while [ $# != 0 ]; do

    # $1 is the directory to copy from,

    # $2 is the unfixed file,

    # $3 is the fixed file name.

    #

    cd ${INPUT}

    cd $1

    if [ -f $2 ] ; then

      if [ -r $2 ] && [ ! -r $3 ]; then

        cp $2 $3 >/dev/null 2>&1 || echo "Can't copy $2" >&2

        chmod +w $3 2>/dev/null

        chmod a+r $3 2>/dev/null

        if test $VERBOSE -gt 2

        then echo Copied $2 ; fi

        for include in `egrep '^[       ]*#[    ]*include[      ]*"[^/]' $3 |

             sed -e 's/^[       ]*#[    ]*include[      ]*"\([^"]*\)".*$/\1/'`

        do

          dir=`echo $2 | sed -e s'|/[^/]*$||'`

          dir2=`echo $3 | sed -e s'|/[^/]*$||'`

          newreq="$newreq $1 $dir/$include $dir2/$include"

        done

      fi

    fi

    shift; shift; shift

  done

  set x $newreq

  shift

done

if test $VERBOSE -gt 2

then echo 'Cleaning up DONE files.' ; fi

cd $LIB

# Look for files case-insensitively, for the benefit of

# DOS/Windows filesystems.

find . -name '[Dd][Oo][Nn][Ee]' -exec rm -f '{}' ';'

if test $VERBOSE -gt 1

then echo 'Cleaning up unneeded directories:' ; fi

cd $LIB

all_dirs=`find . -type d \! -name '.' -print | sort -r`

for file in $all_dirs; do

  if rmdir $LIB/$file > /dev/null

  then

    test $VERBOSE -gt 3 && echo "  removed $file"

  fi

done 2> /dev/null

# On systems which don't support symlinks, `find' may barf

# if called with "-type l" predicate.  So only use that if

# we know we should look for symlinks.

if $LINKS; then

  test $VERBOSE -gt 2 && echo "Removing unused symlinks"

  all_dirs=`find . -type l -print`

  for file in $all_dirs

  do

    if test ! -d $file

    then

      rm -f $file

      test $VERBOSE -gt 3 && echo "  removed $file"

      rmdir `dirname $file` > /dev/null && \

           test $VERBOSE -gt 3 && \

           echo "  removed `dirname $file`"

    fi

  done 2> /dev/null

fi

if test $VERBOSE -gt 0

then echo fixincludes is done ; fi

# # # # # # # # # # # # # # # # # # # # #

#

# End of for INPUT directories

#

done

#

# # # # # # # # # # # # # # # # # # # # #