1 files changed, 58 insertions, 0 deletions
diff --git a/bs/mkdep.sh b/bs/mkdep.sh
new file mode 100755
index 000000000..019b4bc4c
--- /dev/null
+++ b/bs/mkdep.sh
@@ -0,0 +1,58 @@
+#!/bin/sh
+# $d must have a trailing slash $(dir file) in GNU Make
+f="$1"
+d="$2"
+x="$3"
+if test -z "$O"; then
+	echo '$O= not defined or not a directory' >&2
+	exit 1
+fi
+test -d "$O/$d" || "$SHELL" ./bs/mkdir_p.sh "$O/$d"
+t="$O/t.$$.d"
+depmode=
+out=
+if test -e "$O/depmode"; then
+	. "$O/depmode"
+fi
+
+case "$depmode" in
+mm)
+	$CC -MM $CPPFLAGS $CFLAGS "$f" > "$t" 2>/dev/null
+	;;
+m)
+	$CC -M $CPPFLAGS $CFLAGS "$f" > "$t" 2>/dev/null
+	;;
+none)
+	echo "$O/$f: $f $HDR_DEP_HACK" | sed -e 's#c:#o:#' > "$x"+
+	;;
+*)
+	# detect our depmode
+	# -MM is gcc-specific...
+	$CC -MM $CPPFLAGS $CFLAGS "$f" > "$t" 2>/dev/null
+	if test $? -eq 0; then
+		depmode=mm
+	else
+		# ok, maybe -M is supported...
+		$CC -M $CPPFLAGS $CFLAGS "$f" \
+				> "$t" 2>/dev/null
+		if test $? -eq 0; then
+			depmode=m
+		else
+			depmode=none
+			# don't guess, fudge the dependencies by using
+			# all headers
+			echo "$O/$f: $f $HDR_DEP_HACK" \
+					| sed -e 's#c:#o:#' > "$x"+
+		fi
+	fi
+	echo "depmode=$depmode" > "$O/depmode"
+	;;
+esac
+
+case "$depmode" in
+m|mm)
+	sed -e 's#.c$#.o#' -e "1s#^#$O/$d&#" < "$t" > "$x"+
+	;;
+esac
+rm -f "$t"
+exec mv "$x"+ "$x"