fix makefile

Author: johnzhou721

Makefile

@@ -492,10 +492,10 @@ ifeq ($(os), visionOS)
 	echo "Skipping arch-specific header copying for visionOS"
 else
 	# Add the individual headers from each target in an arch-specific name
-	$(foreach target,$(SDK_TARGETS-$(sdk)),cp $(PYTHON_INCLUDE-$(target))/pyconfig.h $(PYTHON_INCLUDE-$(sdk))/pyconfig-$(ARCH-$(target)).h;)
+	$$(foreach target,$$(SDK_TARGETS-$(sdk)),cp $$(PYTHON_INCLUDE-$$(target))/pyconfig.h $$(PYTHON_INCLUDE-$(sdk))/pyconfig-$$(ARCH-$$(target)).h; )
 
 	# Copy the cross-target header from the source folder of the first target in the $(sdk) SDK
-	cp $(PYTHON_SRCDIR-$(firstword $(SDK_TARGETS-$(sdk))))/$(os)/Resources/pyconfig.h $(PYTHON_INCLUDE-$(sdk))/pyconfig.h
+	cp $$(PYTHON_SRCDIR-$$(firstword $$(SDK_TARGETS-$(sdk))))/$(os)/Resources/pyconfig.h $$(PYTHON_INCLUDE-$(sdk))/pyconfig.h
 endif