diff --git a/src/java/com/threerings/util/signal/Mac OS X/Makefile b/src/java/com/threerings/util/signal/Mac OS X/Makefile
index 0fe6ecb04..c10f6c16c 100644
--- a/src/java/com/threerings/util/signal/Mac OS X/Makefile	
+++ b/src/java/com/threerings/util/signal/Mac OS X/Makefile	
@@ -1,7 +1,45 @@
 #
-# $Id: Makefile 3331 2005-02-03 01:25:21Z mdb $
-#
-# Placeholder Makefile
+# $Id: Makefile 3332 2005-02-03 01:30:33Z mdb $
 
-install: 
-	@echo Nothing to see here. Move it along.
+#
+# Executable definitions
+
+CC=gcc
+RM=rm
+CP=cp
+MKDIR=mkdir
+
+#
+# Directory definitions
+
+ROOT=../../../../../../..
+LIBRARIES_PATH=
+OSINCDIR!=uname -s | tr 'A-Z' 'a-z'
+INSTALL_PATH=${ROOT}/dist/lib/`uname -m`-Darwin
+
+#
+# Parameter and file definitions
+
+INCLUDES=-I.. -I/System/Library/Frameworks/JavaVM.framework/Headers
+LIBRARIES=
+TARGET=libsignal.dylib
+
+#
+# Target definitions
+
+all: ${TARGET}
+
+install: ${TARGET}
+	@${MKDIR} -p ${INSTALL_PATH}
+	cp ${TARGET} ${INSTALL_PATH}
+
+${TARGET}: com_threerings_util_signal_SignalManager.c
+	@echo "Compiling $<"
+	@${CC} ${INCLUDES} -c com_threerings_util_signal_SignalManager.c \
+	    -o com_threerings_util_signal_SignalManager.o
+	@echo "Creating $@"
+	@${CC} -o ${TARGET} com_threerings_util_signal_SignalManager.o \
+	    ${LIBRARIES} ${LIBRARIES_PATH} -bundle
+
+clean:
+	-${RM} -f *.o ${TARGET}
diff --git a/src/java/com/threerings/util/signal/Mac OS X/com_threerings_util_signal_SignalManager.c b/src/java/com/threerings/util/signal/Mac OS X/com_threerings_util_signal_SignalManager.c
new file mode 120000
index 000000000..8e15e94bd
--- /dev/null
+++ b/src/java/com/threerings/util/signal/Mac OS X/com_threerings_util_signal_SignalManager.c	
@@ -0,0 +1 @@
+../FreeBSD/com_threerings_util_signal_SignalManager.c
\ No newline at end of file
diff --git a/src/java/com/threerings/util/signal/Mac OS X/libsignal.dylib b/src/java/com/threerings/util/signal/Mac OS X/libsignal.dylib
new file mode 100755
index 000000000..77a358262
Binary files /dev/null and b/src/java/com/threerings/util/signal/Mac OS X/libsignal.dylib differ