File fix_build_system.patch of Package rtl8821cu

--- a/Makefile	2022-12-17 09:27:33.754981118 +0100
+++ b/Makefile	2022-12-17 09:55:33.372936450 +0100
@@ -1366,7 +1366,7 @@
 CROSS_COMPILE ?=
 KVER ?= $(shell uname -r)
 KSRC := /lib/modules/$(KVER)/build
-MODDESTDIR := /lib/modules/$(KVER)/kernel/drivers/net/wireless/
+MODDESTDIR := $(INSTALL_MOD_PATH)/lib/modules/$(KVER)/$(INSTALL_MOD_DIR)/
 INSTALL_PREFIX :=
 STAGINGMODDIR := /lib/modules/$(KVER)/kernel/drivers/staging
 
@@ -1385,7 +1385,7 @@
 CROSS_COMPILE ?=
 KVER := $(shell uname -r)
 KSRC := /lib/modules/$(KVER)/build
-MODDESTDIR := /lib/modules/$(KVER)/kernel/drivers/net/wireless/
+MODDESTDIR := $(INSTALL_MOD_PATH)/lib/modules/$(KVER)/$(INSTALL_MOD_DIR)/
 INSTALL_PREFIX :=
 STAGINGMODDIR := /lib/modules/$(KVER)/kernel/drivers/staging
 endif
@@ -1418,7 +1418,7 @@
 CROSS_COMPILE ?=
 KVER := $(shell uname -r)
 KSRC := /lib/modules/$(KVER)/build
-MODDESTDIR := /lib/modules/$(KVER)/kernel/drivers/net/wireless/
+MODDESTDIR := $(INSTALL_MOD_PATH)/lib/modules/$(KVER)/$(INSTALL_MOD_DIR)/
 INSTALL_PREFIX :=
 endif
 
@@ -2499,6 +2499,8 @@
 	$(CROSS_COMPILE)strip $(MODULE_NAME).ko --strip-unneeded
 
 install:
+	mkdir -p $(MODDESTDIR)
+	install -d $(MODDESTDIR)
 	install -p -m 644 $(MODULE_NAME).ko  $(MODDESTDIR)
 	/sbin/depmod -a ${KVER}