fixincludes

早期freebsd实现

#! /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.

# See README-fixinc for more information.

# Directory where gcc sources (and sometimes special include files) live.
# fixincludes doesn't use this, but fixinc.svr4 does, and I want to make
# sure somebody doesn't try to use arg3 for something incompatible. -- gumby
SRCDIR=${3-${SRCDIR-.}}

# Directory containing the original header files.
# (This was named INCLUDES, but that conflicts with a name in Makefile.in.)
INPUT=${2-${INPUT-/usr/include}}

# This prevents /bin/ex from failing if the current terminal type is
# unrecognizable.
TERM=unknown
export TERM
# This prevents two problems:
# Either ex might find a .exrc file and get confused,
# or ex might complain if the EXINIT variable is invalid. 
# We know there is no .exrc in the GCC source.
# `set' is a no-op ex command.
EXINIT=set
export EXINIT

# Define PWDCMD as a command to use to get the working dir
# in the form that we want.
PWDCMD=pwd
case "`pwd`" in
//*)
	# On an Apollo, discard everything before `/usr'.
	PWDCMD="eval pwd | sed -e 's,.*/usr/,/usr/,'"
	;;
esac

# Directory in which to store the results.
LIB=${1?"fixincludes: output directory not specified"}

# Make sure it exists.
if [ ! -d $LIB ]; then
  mkdir $LIB || exit 1
fi

# Make LIB absolute.
cd $LIB; LIB=`${PWDCMD}`

# 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

echo Building fixed headers in ${LIB}

# Determine whether this system has symbolic links.
if ln -s X $LIB/ShouldNotExist 2>/dev/null; then
  rm -f $LIB/ShouldNotExist
  LINKS=true
else
  LINKS=false
fi

echo Finding directories and links to directories
cd ${INPUT}
# Find all directories and all symlinks that point to directories.
# Put the list in $files.
# 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 $files may have duplicates in it;
# later parts of this file are supposed to ignore them.
dirs="."
levels=2
while [ -n "$dirs" ] && [ $levels -gt 0 ]
do
    levels=`expr $levels - 1`
    newdirs=
    for d in $dirs
    do
	echo " Searching $INPUT/$d"
	if [ "$d" != . ]
	then
	    d=$d/.
	fi

	# Find all directories under $d, relative to $d, excluding $d itself.
        files="$files `find $d -type d -print | \
		       sed -e '/\/\.$/d' -e '/^\.$/d'`"
	# 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`
	for d1 in $theselinks --dummy--
	do
	    # If the link points to a directory,
	    # add that dir to $newdirs
	    if [ -d $d1 ]
	    then
		newdirs="$newdirs $d1"
	    fi
	done
    done

    files="$files $newdirs"
    dirs="$newdirs"
done

dirs=
echo "All directories (including links to directories):"
echo $files

for file in $files; 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="${INPUT} ${LIB}"

if $LINKS; then
  echo 'Making symbolic directory links'
  for file in $files; do
    dest=`ls -ld $file | sed -n 's/.*-> //p'`
    if [ "$dest" ]; then    
      cwd=`${PWDCMD}`
      # In case $dest is relative, get to $file's dir first.
      cd ${INPUT}
      cd `echo ./$file | sed -n 's&[^/]*$&&p'`
      # 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 $dest
	# X gets the dir that the link actually leads to.
	x=`${PWDCMD}`
	# If a link points to ., make a similar link to .
	if [ $x = $INPUT ]; then
	  echo $file '->' . ': Making link'
	  rm -fr ${LIB}/$file > /dev/null 2>&1
	  ln -s . ${LIB}/$file > /dev/null 2>&1
	# If link leads back into ${INPUT},
	# make a similar link here.
	elif expr $x : "${INPUT}/.*" > /dev/null; then
	  # Y gets the actual target dir name, relative to ${INPUT}.
	  y=`echo $x | sed -n "s&${INPUT}/&&p"`
	  echo $file '->' $y ': Making link'
	  rm -fr ${LIB}/$file > /dev/null 2>&1
	  ln -s ${LIB}/$y ${LIB}/$file > /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.
	  echo $file '->' root$x ': Making link'
	  if [ -d $LIB/root$x ]
	  then true
	  else
	    dirname=root$x/
	    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
	  rm -fr ${LIB}/$file > /dev/null 2>&1
	  ln -s ${LIB}/root$x ${LIB}/$file > /dev/null 2>&1
	  treetops="$treetops $x ${LIB}/root$x"
	fi
      fi
      cd $cwd
    fi
  done
fi

set - $treetops
while [ $# != 0 ]; do
  # $1 is an old directory to copy, and $2 is the new directory to copy to.
  cd ${INPUT}
  cd $1
# The same dir can appear more than once in treetops.
# There's no need to scan it more than once.
  if [ -f $2/DONE ]
  then
    files=
  else
    touch $2/DONE
    echo Fixing directory $1 into $2
# Check .h files which are symlinks as well as those which are files.
# A link to a header file will not be processed by anything but this.
    if $LINKS; then
      files=`find . -name '*.h' \( -type f -o -type l \) -print`
    else
      files=`find . -name '*.h' -type f -print`
    fi
    echo Checking header files
  fi
# Note that BSD43_* are used on recent MIPS systems.
  for file in $files; do
# This call to egrep is essential, since checking a file with egrep
# is much faster than actually trying to fix it.
# It is also essential that most files *not* match!
# Thus, matching every #endif is unacceptable.
# But the argument to egrep must be kept small, or many versions of egrep
# won't be able to handle it.
# rms: I removed `|#[el].*if.*[^/ 	]' because it made egrep fail.
    if egrep '//|[ 	_]_IO|CTRL|#define.NULL|#[el]*if.*([0-9]|sparc|vax|sun|pyr)' $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
# Following two lines removed.
#	  s%^\([ 	]*#[ 	]*endif[ 	]*\)\([^/ 	].*\)$%\1/* \2 */%
#	  s%^\([ 	]*#[ 	]*else[ 	]*\)\([^/ 	].*\)$%\1/* \2 */%

	sed -e '
				   :loop
	  /\\$/			N
	  /\\$/			b loop
	  /\/\//			s|//\(.*\)$|/*\1*/|
	  /[ 	]_IO[A-Z]*[ 	]*(/	s/(\(.\),/('\''\1'\'',/
	  /[ 	]BSD43__IO[A-Z]*[ 	]*(/	s/(\(.\),/('\''\1'\'',/
	  /#define._IO/			s/'\''x'\''/x/g
	  /#define.BSD43__IO/		s/'\''x'\''/x/g
	  /[^A-Z]CTRL[ 	]*(/		s/\([^'\'']\))/'\''\1'\'')/
	  /#define.CTRL/		s/'\''c'\''/c/g
	  /#define._CTRL/		s/'\''c'\''/c/g
	  /#define.BSD43_CTRL/		s/'\''c'\''/c/g
	  /#[a-z]*if.*[	 (]m68k/	s/\([^_]\)m68k/\1__m68k__/g
	  /#[a-z]*if.*[	 (]__i386/	s/__i386/__i386__/g
	  /#[a-z]*if.*[	 (]i386/	s/\([^_]\)i386/\1__i386__/g
	  /#[a-z]*if.*[	 (]sparc/	s/\([^_]\)sparc/\1__sparc__/g
	  /#[a-z]*if.*[	 (]mc68000/	s/\([^_]\)mc68000/\1__mc68000__/g
	  /#[a-z]*if.*[	 (]vax/		s/\([^_]\)vax/\1__vax__/g
	  /#[a-z]*if.*[	 (]sun/		s/\([^_]\)\(sun[a-z0-9]*\)\([^a-z0-9_]\)/\1__\2__\3/g
	  /#[a-z]*if.*[	 (]sun/		s/\([^_]\)\(sun[a-z0-9]*\)$/\1__\2__/g
	  /#[a-z]*if.*[	 (]ns32000/	s/\([^_]\)ns32000/\1__ns32000__/g
	  /#[a-z]*if.*[	 (]pyr/		s/\([^_]\)pyr/\1__pyr__/g
	  /#[a-z]*if.*[	 (]is68k/	s/\([^_]\)is68k/\1__is68k__/g
	  /^#define.NULL[ 	]/	i\
		#undef NULL
	' $2/$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; shift
done

cd ${INPUT}

# Fix one other error in this file: a mismatched quote not inside a C comment.
file=sundev/vuid_event.h
if [ -r $file ] && [ ! -r ${LIB}/$file ]; then
  mkdir ${LIB}/sundev 2>/dev/null
  cp $file ${LIB}/$file >/dev/null 2>&1 || echo "Can't copy $file"
  chmod +w ${LIB}/$file 2>/dev/null
fi

if [ -r ${LIB}/$file ]; then
  echo Fixing $file comment
  ex ${LIB}/$file <<EOF
  g/doesn't/s/doesn't/does not/
  wq
EOF
  if cmp $file ${LIB}/$file >/dev/null 2>&1; then
    echo Deleting ${LIB}/$file\; no fixes were needed.
    rm ${LIB}/$file
  fi
fi

# Fix this Sun file to avoid interfering with stddef.h.
file=sys/stdtypes.h
if [ -r $file ] && [ ! -r ${LIB}/$file ]; then
  cp $file ${LIB}/$file >/dev/null 2>&1 || echo "Can't copy $file"
  chmod +w ${LIB}/$file 2>/dev/null
fi

if [ -r ${LIB}/$file ]; then
  echo Fixing $file
  ex ${LIB}/$file <<EOF
  /size_t.*;/
  i
#ifndef _GCC_SIZE_T
#define _GCC_SIZE_T
.
  /size_t/+1
  i
#endif
.
  /ptrdiff_t.*;/
  i
#ifndef _GCC_PTRDIFF_T
#define _GCC_PTRDIFF_T
.
  /ptrdiff_t/+1
  i
#endif
.
  /wchar_t.*;/
  i
#ifndef _GCC_WCHAR_T
#define _GCC_WCHAR_T
.
  /wchar_t/+1
  i
#endif
.
  wq
EOF
  if cmp $file ${LIB}/$file >/dev/null 2>&1; then
    echo Deleting ${LIB}/$file\; no fixes were needed.
    rm ${LIB}/$file
  fi
fi

# Fix this file to avoid interfering with stddef.h, but don't mistakenly
# match e.g. ssize_t present in AIX for the ps/2.
file=sys/types.h
if [ -r $file ] && [ ! -r ${LIB}/$file ]; then
  cp $file ${LIB}/$file >/dev/null 2>&1 || echo "Can't copy $file"
  chmod +w ${LIB}/$file 2>/dev/null
fi

if [ -r ${LIB}/$file ]; then
  echo Fixing $file
  ex ${LIB}/$file <<EOF
  /typedef.*[ 	]size_t.*;/
  i
#ifndef _GCC_SIZE_T
#define _GCC_SIZE_T
.
  /size_t/+1
  i
#endif
.
  wq
EOF
  if cmp $file ${LIB}/$file >/dev/null 2>&1; then
    echo Deleting ${LIB}/$file\; no fixes were needed.
    rm ${LIB}/$file
  fi
fi

# Fix an error in this file: the #if says _cplusplus, not the double
# underscore __cplusplus that it should be
file=tinfo.h
if [ -r $file ] && [ ! -r ${LIB}/$file ]; then
  mkdir ${LIB}/rpcsvc 2>/dev/null
  cp $file ${LIB}/$file >/dev/null 2>&1 || echo "Can't copy $file"
  chmod +w ${LIB}/$file 2>/dev/null
fi

if [ -r ${LIB}/$file ]; then
  echo Fixing $file, __cplusplus macro
  sed -e 's/[ 	]_cplusplus/ __cplusplus/' ${LIB}/$file > ${LIB}/${file}.sed
  rm -f ${LIB}/$file; mv ${LIB}/${file}.sed ${LIB}/$file
  if cmp $file ${LIB}/$file >/dev/null 2>&1; then
    rm ${LIB}/$file
  fi
fi

# Fix an error in this file: a missing semi-colon at the end of the statsswtch
# structure definition.
file=rpcsvc/rstat.h
if [ -r $file ] && [ ! -r ${LIB}/$file ]; then
  mkdir ${LIB}/rpcsvc 2>/dev/null
  cp $file ${LIB}/$file >/dev/null 2>&1 || echo "Can't copy $file"
  chmod +w ${LIB}/$file 2>/dev/null
fi

if [ -r ${LIB}/$file ]; then
  echo Fixing $file, definition of statsswtch
  ex ${LIB}/$file <<EOF
  g/boottime$/s//&;/
  wq
EOF
  if cmp $file ${LIB}/$file >/dev/null 2>&1; then
    echo Deleting ${LIB}/$file\; no fixes were needed.
    rm ${LIB}/$file
  fi
fi

# Fix an error in this file: a missing semi-colon at the end of the nodeent
# structure definition.
file=netdnet/dnetdb.h
if [ -r $file ] && [ ! -r ${LIB}/$file ]; then
  mkdir ${LIB}/netdnet 2>/dev/null
  cp $file ${LIB}/$file >/dev/null 2>&1 || echo "Can't copy $file"
  chmod +w ${LIB}/$file 2>/dev/null
fi

if [ -r ${LIB}/$file ]; then
  echo Fixing $file, definition of nodeent
  ex ${LIB}/$file <<EOF
  g/char.*na_addr *$/s//&;/
  wq
EOF
  if cmp $file ${LIB}/$file >/dev/null 2>&1; then
    echo Deleting ${LIB}/$file\; no fixes were needed.
    rm ${LIB}/$file
  fi
fi

# Check for bad #ifdef line (in Ultrix 4.1)
file=sys/file.h
if [ -r $file ] && [ ! -r ${LIB}/$file ]; then
  cp $file ${LIB}/$file >/dev/null 2>&1 || echo "Can't copy $file"
  chmod +w ${LIB}/$file 2>/dev/null
fi

if [ -r ${LIB}/$file ]; then
  echo Fixing $file, bad \#ifdef line
  ex ${LIB}/$file <<EOF
  g/^#ifdef KERNEL && !defined/
  s/#ifdef KERNEL && !defined/#if defined(KERNEL) \&\& !defined/
  wq
EOF
  if cmp $file ${LIB}/$file >/dev/null 2>&1; then
    echo Deleting ${LIB}/$file\; no fixes were needed.
    rm ${LIB}/$file
  fi
fi

# Remove nested comments created by #endifs in a comment (Ultrix 4.1)
# Only needed if commenting out junk after #endif.
#file=signal.h
#if [ -r $file ] && [ ! -r ${LIB}/$file ]; then
#  cp $file ${LIB}/$file >/dev/null 2>&1 || echo "Can't copy $file"
#  chmod +w ${LIB}/$file 2>/dev/null
#fi
#
#if [ -r ${LIB}/$file ]; then
#  echo Fixing $file, nested comments