add ngc driver

1 files changed, 62 insertions, 0 deletions

diff --git a/ngc b/ngc
new file mode 100755
index 0000000..36ef94a
--- /dev/null
+++ b/ngc
@@ -0,0 +1,62 @@
+#!/bin/sh
+if [ -n "${NGC_DEBUG+x}" ]; then
+	set -x
+fi
+
+if [ -z "${NGC_CC+x}"]; then
+	NGC_CC=cc
+fi
+
+ARGS=
+SOURCES=
+OUTPUT=
+# we don't want our temporary files to end up in makefile rules so pick all
+# depflags out as well
+DEPFLAGS=
+
+# pick out some important options
+while true; do
+	case "$1" in
+		"") break;;
+		-M)   DEPFLAGS="$DEPFLAGS $1"   ; shift  ;;
+		-MM)  DEPFLAGS="$DEPFLAGS $1"   ; shift  ;;
+		-MF)  DEPFLAGS="$DEPFLAGS $1 $2"; shift 2;;
+		-MG)  DEPFLAGS="$DEPFLAGS $1"   ; shift  ;;
+		-MP)  DEPFLAGS="$DEPFLAGS $1"   ; shift  ;;
+		-MT)  DEPFLAGS="$DEPFLAGS $1 $2"; shift 2;;
+		-MQ)  DEPFLAGS="$DEPFLAGS $1 $2"; shift 2;;
+		-MD)  DEPFLAGS="$DEPFLAGS $1"   ; shift  ;;
+		-MMD) DEPFLAGS="$DEPFLAGS $1"   ; shift  ;;
+		*.c) SOURCES="$SOURCES $1"; shift;;
+		-o)  OUTPUT="$2"; shift 2;;
+		*)   ARGS="$ARGS $1"; shift;;
+	esac
+done
+
+if [ -z "${SOURCES}" ]; then
+	# there must be an output, although I guess an assertion would be nice?
+	$NGC_CC $DEPFLAGS $ARGS -o "$OUTPUT"
+	exit 0
+fi
+
+TMPFILE1=$(mktemp --suffix=.i)
+TMPFILE2=$(mktemp --suffix=.c)
+
+cleanup() {
+	if [ -z "${NGC_LEAVE_DIRTY+x}" ]; then
+		rm "$TMPFILE1" "$TMPFILE2"
+	fi
+
+	exit $1
+}
+
+$NGC_CC -E $DEPFLAGS $ARGS $SOURCES -o "$TMPFILE1" || cleanup 1
+ngc1 "$TMPFILE1" > "$TMPFILE2" || cleanup 2
+
+if [ -z "$OUTPUT" ]; then
+	$NGC_CC $ARGS "$TMPFILE2" || cleanup 3
+else
+	$NGC_CC $ARGS "$TMPFILE2" -o "$OUTPUT" || cleanup 4
+fi
+
+cleanup 0