--- zzzz-none-000/linux-4.19.183/scripts/Makefile.headersinst	2021-03-24 10:07:39.000000000 +0000
+++ bcm63-7530ax-756/linux-4.19.183/scripts/Makefile.headersinst	2023-06-28 08:54:21.000000000 +0000
@@ -31,18 +31,23 @@
 $(subdirs):
 	$(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(dst)/$@
 
+ifeq ($(no-skip),)
 # Skip header install/check for include/uapi and arch/$(SRCARCH)/include/uapi.
 # We have only sub-directories there.
 skip-inst := $(if $(filter %/uapi,$(obj)),1)
+endif
 
 ifeq ($(skip-inst),)
 
+# generated header directory
+gen := $(if $(gen),$(gen),$(subst include/,include/generated/,$(obj)))
+
 # Kbuild file is optional
 kbuild-file := $(srctree)/$(obj)/Kbuild
 -include $(kbuild-file)
 
 installdir    := $(INSTALL_HDR_PATH)/$(dst)
-gendir        := $(objtree)/$(subst include/,include/generated/,$(obj))
+gendir        := $(objtree)/$(gen)
 header-files  := $(notdir $(wildcard $(srcdir)/*.h))
 header-files  += $(notdir $(wildcard $(srcdir)/*.agh))
 header-files  := $(filter-out $(no-export-headers), $(header-files))
@@ -64,9 +69,11 @@
 endif
 endif
 
+ifeq ($(no-skip),)
 # Work out what needs to be removed
 oldheaders    := $(patsubst $(installdir)/%,%,$(wildcard $(installdir)/*.h))
 unwanted      := $(filter-out $(all-files),$(oldheaders))
+endif
 
 # Prefix unwanted with full paths to $(INSTALL_HDR_PATH)
 unwanted-file := $(addprefix $(installdir)/, $(unwanted))
@@ -101,7 +108,7 @@
 $(install-file): scripts/headers_install.sh \
 		 $(addprefix $(srcdir)/,$(header-files)) \
 		 $(addprefix $(gendir)/,$(genhdr-files)) FORCE
-	$(if $(unwanted),$(call cmd,remove),)
+	$(if $(subst include/uapi,,$(dst)),$(if $(unwanted),$(call cmd,remove),))
 	$(if $(wildcard $(dir $@)),,$(shell mkdir -p $(dir $@)))
 	$(call if_changed,install)