opts.sh: Work around a mysterious feature in cygwin's gawk where specifying the input...

	* opts.sh: Work around a mysterious feature in cygwin's gawk
	where specifying the input files explicitly has a different
	behavior to piping them via stdin.

From-SVN: r67946

gcc/ChangeLog

+2003-06-14  Roger Sayle  <roger@eyesopen.com>
+
+	* opts.sh: Work around a mysterious feature in cygwin's gawk
+	where specifying the input files explicitly has a different
+	behavior to piping them via stdin.
+
 2003-06-14  Neil Booth  <neil@daikokuya.co.uk>
 
 	* doc/sourcebuild.texi: Update.

gcc/opts.sh

@@ -33,12 +33,12 @@ SORT=sort		# Could be /bin/sort or /usr/bin/sort
 C_FILE=$1; shift
 H_FILE=$1; shift
 
-cat "$@" | ${AWK} '
+${AWK} '
 	BEGIN{ RS=""; FS="\n" }
 	# Ignore comments and blank lines
 	/^[ \t]*(;|$)/	{ next }
 	/^[^ \t]/ 	{ gsub ("\n", "\034", $0); print }
-' | ${SORT} | ${AWK} '
+' "$@" | ${SORT} | ${AWK} '
     function switch_flags (langs,   flags)
     {
 	langs = ":" langs ":"