Fix #endif foo; don't alter sh options; clean up all DONE files

From-SVN: r3832

gcc/fixincludes

@@ -211,7 +211,8 @@ if $LINKS; then
   done
 fi
 
-set - $treetops
+set x $treetops
+shift
 while [ $# != 0 ]; do
   # $1 is an old directory to copy, and $2 is the new directory to copy to.
   cd ${INPUT}
@@ -241,41 +242,62 @@ while [ $# != 0 ]; do
 # 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
+#
+# We use the pattern [!-.0-~] instead of [^/ 	] to match a noncomment
+# following #else or #endif because some buggy egreps think [^/] matches
+# newline, and they thus think `#else ' matches `#e[ndiflse]*[ 	]+[^/ 	]'.
+#
+# We use the pattern [^a-zA-Z0-9_][_a-ce-km-z][a-z0-9] to match an identifier
+# following #if or #elif that is not surrounded by __.  The `a-ce-km-z'
+# in this pattern lacks `d' and `l'; this means we don't worry about
+# identifiers starting with `d' or `l'.  This is OK, since none of the
+# identifiers below start with `d' or `l'.  It also greatly improves
+# performance, since many files contain lines of the form `#if ... defined ...'
+# or `#if lint'.
+    if egrep '//|[ 	_]_IO|CTRL|^#define.NULL|^#e[nl][ds][ief]*[ 	]+[!-.0-~]|^#[el]*if.*[^a-zA-Z0-9_][_a-ce-km-z][a-z0-9]' $file >/dev/null; then
       if [ -r $file ]; then
 	cp $file $2/$file >/dev/null 2>&1	\
 	|| echo "Can't copy $file"
 	chmod +w $2/$file
 	chmod a+r $2/$file
-# Following two lines removed.
-#	  s%^\([ 	]*#[ 	]*endif[ 	]*\)\([^/ 	].*\)$%\1/* \2 */%
-#	  s%^\([ 	]*#[ 	]*else[ 	]*\)\([^/ 	].*\)$%\1/* \2 */%
-
 	sed -e '
 				   :loop
 	  /\\$/			N
 	  /\\$/			b loop
+	  s%^\([ 	]*#[ 	]*endif[ 	]*\)\([^/ 	].*\)$%\1/* \2 */%
+	  s%^\([ 	]*#[ 	]*else[ 	]*\)\([^/ 	].*\)$%\1/* \2 */%
 	  /\/\/[^*]/			s|//\(.*\)$|/*\1*/|
 	  /[ 	]_IO[A-Z]*[ 	]*(/	s/(\(.\),/('\''\1'\'',/
 	  /[ 	]BSD43__IO[A-Z]*[ 	]*(/	s/(\(.\),/('\''\1'\'',/
 	  /#define._IO/			s/'\''\([cgx]\)'\''/\1/g
-	  /#define.BSD43__IO/		s/'\''\(]cgx]\)'\''/\1/g
+	  /#define.BSD43__IO/		s/'\''\([cgx]\)'\''/\1/g
 	  /[^A-Z]CTRL[ 	]*(/		s/\([^'\'']\))/'\''\1'\'')/
 	  /#define.CTRL/		s/'\''\([cgx]\)'\''/\1/g
 	  /#define._CTRL/		s/'\''\([cgx]\)'\''/\1/g
 	  /#define.BSD43_CTRL/		s/'\''\([cgx]\)'\''/\1/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
+	  /#[el]*if/{
+		# Surround each word with spaces, to simplify matching below.
+		s/[a-zA-Z0-9_][a-zA-Z0-9_]*/ & /g
+
+		# ANSIfy each pre-ANSI machine-dependent symbol
+		# by surrounding it with __ __.
+		s/ bsd4\([0-9]\) / __bsd4\1__ /g
+		s/ _*i386 / __i386__ /g
+		s/ is68k / __is68k__ /g
+		s/ m68k / __m68k__ /g
+		s/ mc680\([0-9]\)0 / __mc680\10__ /g
+		s/ news\([0-9]*\) / __news\1__ /g
+		s/ ns32000 / __ns32000__ /g
+		s/ pyr / __pyr__ /g
+		s/ sony_news / __sony_news__ /g
+		s/ sparc / __sparc__ /g
+		s/ sun\([a-z0-9]*\) / __sun\1__ /g
+		s/ unix / __unix__ /g
+		s/ vax / __vax__ /g
+
+		# Remove the spaces that we inserted around each word.
+		s/ \([a-zA-Z0-9_][a-zA-Z0-9_]*\) /\1/g
+	  }
 	  /^#define.NULL[ 	]/	i\
 		#undef NULL
 	' $2/$file > $2/$file.sed
@@ -497,21 +519,21 @@ 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
-#  chmod a+r ${LIB}/$file 2>/dev/null
-#fi
-#
-#if [ -r ${LIB}/$file ]; then
-#  echo Fixing $file, nested comments
-#  sed -e 's/#endif.*/#endif/' ${LIB}/$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 -f ${LIB}/$file
-#  fi
-#fi
+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
+  chmod a+r ${LIB}/$file 2>/dev/null
+fi
+
+if [ -r ${LIB}/$file ]; then
+  echo Fixing $file, nested comments
+  sed -e 's/#endif.*/#endif/' ${LIB}/$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 -f ${LIB}/$file
+  fi
+fi
 
 # Check for superfluous `static' (in Ultrix 4.2)
 file=machine/cpu.h
@@ -1010,7 +1032,8 @@ if $LINKS; then
   done
 fi
 
-# Prevent premature exit when subsequently processing OTHER_FIXINCLUDES_DIRS.
-rm ${LIB}/DONE
+echo 'Cleaning up DONE files.'
+cd $LIB
+find . -name DONE -exec rm -f {} ';'
 
 exit 0