Use macosx target for respring_simulator, which resolves a compatibility issue with macOS 10.12 Sierra. Created an empty dummy control file in respring_simulator's directory to work around a Theos bug.

Makefile

@@ -1,30 +1,19 @@
-THEOS_PACKAGE_DIR_NAME = debs
-TARGET = simulator:clang
-ARCHS = x86_64 i386
-DEBUG = 0
-GO_EASY_ON_ME = 1
-PACKAGE_VERSION = $(THEOS_PACKAGE_BASE_VERSION)
-
-include $(THEOS)/makefiles/common.mk
-
-AGGREGATE_NAME = simjectProject
-SUBPROJECTS = simject simjectUIKit respring_simulator
-
-include $(THEOS_MAKE_PATH)/aggregate.mk
-
-after-all::
-	@echo Copying binaries...
-	@mkdir -p bin
-	@cp -v $(THEOS_OBJ_DIR)/respring_simulator $(THEOS_OBJ_DIR)/simject.dylib $(THEOS_OBJ_DIR)/simjectUIKit.dylib bin
+all::
+	@make -C respring_simulator
+	@make -C simject
+	@make -C simjectUIKit
 
 clean::
 	@rm -rfv bin
+	@make -C respring_simulator clean
+	@make -C simject clean
+	@make -C simjectUIKit clean
 
 setup:: clean all
 	@sudo mkdir -p /opt/simject
 	@sudo chown -R $(USER) /opt/simject
-	@cp -v bin/simject.dylib /opt/simject
-	@cp -v simject/simject.plist /opt/simject
-	@cp -v bin/simjectUIKit.dylib /opt/simject
-	@cp -v simjectUIKit/simjectUIKit.plist /opt/simject
+	@cp bin/simject.dylib /opt/simject
+	@cp simject/simject.plist /opt/simject
+	@cp bin/simjectUIKit.dylib /opt/simject
+	@cp simjectUIKit/simjectUIKit.plist /opt/simject
 	@echo Done. Place your tweak\'s dynamic libraries and accompanying property lists inside /opt/simject to load them in the iOS Simulator.

respring_simulator/Makefile

@@ -1,9 +1,4 @@
-# TODO: This is a rather poor hack-job because respring_simulator ends up being compiled with the simulator target
-# Targeting the simulator for a macOS binary no longer works as of macOS 10.12
-# However, changing this target to macosx:clang results in a Theos error for the time being
-# I'll change this after I fix the corresponding issue in Theos.
-TARGET = simulator:clang
-# TARGET = macosx:clang
+TARGET = macosx:clang
 ARCHS = x86_64 i386
 DEBUG = 0
 GO_EASY_ON_ME = 1
@@ -15,3 +10,8 @@ respring_simulator_FILES = respring_simulator.mm ../simjectCore.mm
 respring_simulator_CFLAGS = -Wno-deprecated-declarations
 
 include $(THEOS_MAKE_PATH)/tool.mk
+
+after-all::
+	@echo Copying binaries...
+	@mkdir -p ../bin
+	@cp $(THEOS_OBJ_DIR)/respring_simulator ../bin/

simject/Makefile

@@ -9,3 +9,8 @@ TWEAK_NAME = simject
 simject_FILES = simject.xm ../simjectCore.mm
 
 include $(THEOS_MAKE_PATH)/tweak.mk
+
+after-all::
+	@echo Copying binaries...
+	@mkdir -p ../bin
+	@cp $(THEOS_OBJ_DIR)/simject.dylib ../bin/

simjectUIKit/Makefile

@@ -9,3 +9,8 @@ TWEAK_NAME = simjectUIKit
 simjectUIKit_FILES = simjectUIKit.xm ../simjectCore.mm
 
 include $(THEOS_MAKE_PATH)/tweak.mk
+
+after-all::
+	@echo Copying binaries...
+	@mkdir -p ../bin
+	@cp $(THEOS_OBJ_DIR)/simjectUIKit.dylib ../bin/