#! /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 GNU C will search.# This works properly on a Sun in system version 3.4;# for other versions, you had better check.# Directory in which to store the results.LIB=${LIB-/usr/local/lib/gcc-include}# Make sure it exists.if [ ! -d $LIB ]; then  mkdir $LIB || exit 1fi# Determine whether this system has symbolic links.if ln -s X $LIB/ShouldNotExist 2>/dev/null; then  rm -f $LIB/ShouldNotExist  LINKS=trueelse  LINKS=falsefiecho 'Making directories:'cd /usr/includeif $LINKS; then  files=`ls -LR | sed -n s/:$//p`else  files=`find . -type d -print`fifor file in $files; do  rm -rf $LIB/$file  if [ ! -d $LIB/$file ]  then mkdir $LIB/$file  fidone# treetops gets an alternating list# of old directories to copy# and the new directories to copy to.treetops="/usr/include ${LIB}"if $LINKS; then  echo 'Making internal symbolic directory links'  for file in $files; do    dest=`ls -ld $file | sed -n 's/.*-> //p'`    if [ "$dest" ]; then          cwd=`pwd`      cd $dest      if [ $? = 0 ]; then	dest=`pwd`	cd $cwd      fi      if expr $dest : '[^/.].*' > /dev/null; then	rmdir ${LIB}/$file > /dev/null 2>&1	rm -f ${LIB}/$file > /dev/null 2>&1	ln -s $dest ${LIB}/$file > /dev/null 2>&1      else				# dont make links outside /usr/include	treetops="$treetops $dest ${LIB}/$file"      fi    fi  donefiset - $treetopswhile [ $# != 0 ]; do  # $1 is an old directory to copy, and $2 is the new directory to copy to.  echo "Finding header files in $1:"  cd /usr/include  cd $1  files=`find . -type f -print`  echo 'Checking header files:'  for file in $files; do    if egrep '[ 	]_IO[A-Z]*\(|#define._IO|CTRL' $file > /dev/null; then      echo Fixing $file      if [ -r $file ]; then	cp $file $2/$file >/dev/null 2>&1	\	|| echo "Can't copy $file"	chmod +w $2/$file	sed -e '				   :loop	  /\\$/			N	  /\\$/			b loop	  /[ 	]_IO[A-Z]*(/	s/(\(.\),/('\''\1'\'',/	  /#define._IO/		s/'\''x'\''/x/g	  /[^A-Z]CTRL[ 	]*(/	s/\(.\))/'\''\1'\'')/	  /#define.CTRL/		s/'\''c'\''/c/g	' $2/$file > $2/$file.sed	mv $2/$file.sed $2/$file	if cmp $file $2/$file >/dev/null 2>&1; then	   echo Deleting $2/$file\; no fixes were needed.	   rm $2/$file	fi      fi    fi  done  shift; shiftdonecd /usr/include# Fix one other error in this file: a mismatched quote not inside a C comment.file=sundev/vuid_event.hif [ -r $file ]; then  if [ ! -r ${LIB}/$file ]; then    cp $file ${LIB}/$file >/dev/null 2>&1	\    || echo "Can't copy $file"    chmod +w ${LIB}/$file  fifiif [ -r ${LIB}/sundev/vuid_event.h ]; then  echo Fixing sundev/vuid_event.h comment  ex ${LIB}/sundev/vuid_event.h <<EOF  g/doesn't/s/doesn't/does not/  wqEOFfi# Deal with yet another challenge, this in X11/Xmu.hfile=X11/Xmu.hif [ -r $file ]; then  if [ ! -r ${LIB}/$file ]; then    mkdir ${LIB}/X11 2>&-    cp $file ${LIB}/$file >/dev/null 2>&1	\    || echo "Can't copy $file"    chmod +w ${LIB}/$file  fifiif [ -r ${LIB}/$file ]; then  echo Fixing $file sprintf declaration  ex ${LIB}/$file <<EOF  /^extern char \*	sprintf();$/c#ifndef __STDC__extern char *	sprintf();#endif /* !defined __STDC__ */.  wqEOFfiecho 'Removing unneeded directories:'cd $LIBfiles=`find . -type d -print | sort -r`for file in $files; do  rmdir $LIB/$file > /dev/null 2>&1doneif $LINKS; then  echo 'Making internal symbolic non-directory links'  cd /usr/include  files=`find . -type l -print`  for file in $files; do    dest=`ls -ld $file | sed -n 's/.*-> //p'`    if expr "$dest" : '[^/].*' > /dev/null; then          target=${LIB}/`echo file | sed "s|[^/]*\$|$dest|"`      if [ -f $target ]; then        ln -s $dest ${LIB}/$file >/dev/null 2>&1      fi    fi  donefiexit 0