Import orig/unproto

1 files changed, 35 insertions, 0 deletions

diff --git a/cpp.sh b/cpp.sh
new file mode 100644
index 0000000..a039146
--- /dev/null
+++ b/cpp.sh
@@ -0,0 +1,35 @@
+#!/bin/sh
+
+# @(#) cpp.sh 1.3 92/01/15 21:53:22
+
+# Unprototypeing preprocessor for pre-ANSI C compilers.  On some systems,
+# this script can be as simple as:
+#
+#	/lib/cpp "$@" | unproto
+#
+# However, some cc(1) drivers specify output file names on the
+# preprocessor command line, so this shell script must be prepared to
+# intercept them.  Depending on the driver program, the cpp options may
+# even go before or after the file name argument(s). The script below
+# tries to tackle all these cases.
+#
+# You may want to add -Ipath_to_stdarg.h_file, -Dvoid=, -Dvolatile=, 
+# and even -D__STDC__.
+
+cpp_args=""
+
+while :
+do
+	case $1 in
+	"")	break;;
+	-*)	cpp_args="$cpp_args $1";;
+	 *)	cpp_args="$cpp_args $1"
+		case $2 in
+		""|-*)	;;
+		    *)	exec 1> $2 || exit 1; shift;;
+		esac;;
+	esac
+	shift
+done
+
+/lib/cpp $cpp_args | unproto