--- gcc/fixincludes	2018/04/24 16:44:56	1.1.1.4
+++ gcc/fixincludes	2018/04/24 16:51:58	1.1.1.10
@@ -8,45 +8,102 @@
 # Directory in which to store the results.
 LIB=/usr/local/lib/gcc-include
 
-mkdir ${LIB}
-for dir in sys sun sundev sunwindow; do
-  if [ -d /usr/include/$dir ]; then
-    mkdir ${LIB}/$dir
-  fi
+# 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 'Making directories:'
+cd /usr/include
+mkdir $LIB > /dev/null 2>&1
+if $LINKS; then
+  files=`ls -LR | sed -n s/:$//p`
+else
+  files=`find . -type d -print`
+fi
+for file in $files; do
+  mkdir $LIB/$file > /dev/null 2>&1
 done
 
-cp /usr/include/sys/ioctl.h ${LIB}/sys/ioctl.h
-chmod +w ${LIB}/sys/ioctl.h
-ex ${LIB}/sys/ioctl.h <<EOF
-g/_IO/s/(\(.\),/('\1',/
-g/#define._IO/s/'x'/x/g
-wq
-EOF
+# treetops gets an alternating list
+# of old directories to copy
+# and the new directories to copy to.
+treetops="/usr/include ${LIB}"
 
-for file in sys/mtio.h sys/vcmd.h sys/des.h  \
-	    vaxuba/qvioctl.h \
-	    sun/dkio.h sun/fbio.h sun/gpio.h sun/ndio.h  \
-            sundev/kbio.h sundev/msio.h sundev/fpareg.h sundev/mcpcmd.h  \
-	    sundev/msreg.h sundev/vuid_event.h sunwindow/win_ioctl.h; do
-  if [ -r /usr/include/$file ]; then
-    cp /usr/include/$file ${LIB}/$file
-    chmod +w ${LIB}/$file
-    ex ${LIB}/$file <<EOF
-    g/_IO/s/(\(.\),/('\1',/
-    wq
+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    
+      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
+  done
+fi
+
+set - $treetops
+while [ $# != 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 $1
+  files=`find . -type f -print`
+  echo 'Checking header files:'
+  for file in $files; do
+    if egrep -s '[ 	]_IO[A-Z]*\(|#define._IO|CTRL' $file; 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
+	ex $2/$file <<EOF
+	g/[ 	]_IO[A-Z]*(/s/(\(.\),/('\1',/
+        g/[ 	]_IO[A-Z]*(.*\\$/.,+1s/(\(.\),/('\1',/
+	g/#define._IO/s/'x'/x/g
+        g/#define._IO.*\\$/.,+1s/'x'/x/g
+	g/[^A-Z]CTRL[ 	]*(/s/\(.\))/'\1')/
+	g/#define.CTRL/s/'c'/c/g
+	wq
 EOF
-  fi
+	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
 
 # Fix one other error in this file: a mismatched quote not inside a C comment.
-ex ${LIB}/sundev/vuid_event.h <<EOF
-g/doesn't/s/doesn't/doesn''t/
-wq
-
-cp /usr/include/sys/ttychars.h ${LIB}/sys/ttychars.h
-chmod +w ${LIB}/sys/ttychars.h
-ex ${LIB}/sys/ttychars.h << EOF
-g/CTRL/s/(\(.\))/('\1')/
-g/#define.CTRL/s/'c'/c/g
-wq
+file=sundev/vuid_event.h
+if [ -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
+  fi
+fi
+
+if [ -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/doesn''t/
+  wq
 EOF
+fi
+
+echo 'Removing unneeded directories:'
+cd $LIB
+files=`find . -type d -print | sort -r`
+for file in $files; do
+  rmdir $LIB/$file > /dev/null 2>&1
+done
+