# SPDX-License-Identifier: GPL-2.0

  # ==========================================================================
  # Installing modules
  # ==========================================================================

  PHONY := __modinst

  __modinst:

  include include/config/auto.conf

  include $(srctree)/scripts/Kbuild.include

  modules := $(sort $(shell cat $(MODORDER)))
  
  ifeq ($(KBUILD_EXTMOD),)
  dst := $(MODLIB)/kernel
  else
  INSTALL_MOD_DIR ?= extra
  dst := $(MODLIB)/$(INSTALL_MOD_DIR)
  endif

  suffix-y				:=
  suffix-$(CONFIG_MODULE_COMPRESS_GZIP)	:= .gz
  suffix-$(CONFIG_MODULE_COMPRESS_XZ)	:= .xz

  suffix-$(CONFIG_MODULE_COMPRESS_ZSTD)	:= .zst

  
  modules := $(patsubst $(extmod_prefix)%, $(dst)/%$(suffix-y), $(modules))

  __modinst: $(modules)
  	@:

  quiet_cmd_none =
        cmd_none = :
  
  #
  # Installation
  #

  quiet_cmd_install = INSTALL $@

        cmd_install = mkdir -p $(dir $@); cp $< $@
  
  # Strip
  #
  # INSTALL_MOD_STRIP, if defined, will cause modules to be stripped after they
  # are installed. If INSTALL_MOD_STRIP is '1', then the default option
  # --strip-debug will be used. Otherwise, INSTALL_MOD_STRIP value will be used
  # as the options to the strip command.
  ifdef INSTALL_MOD_STRIP
  
  ifeq ($(INSTALL_MOD_STRIP),1)
  strip-option := --strip-debug
  else
  strip-option := $(INSTALL_MOD_STRIP)
  endif
  
  quiet_cmd_strip = STRIP   $@
        cmd_strip = $(STRIP) $(strip-option) $@
  
  else

  quiet_cmd_strip =
        cmd_strip = :
  
  endif
  
  #
  # Signing
  # Don't stop modules_install even if we can't sign external modules.
  #
  ifeq ($(CONFIG_MODULE_SIG_ALL),y)
  quiet_cmd_sign = SIGN    $@
  $(eval $(call config_filename,MODULE_SIG_KEY))
        cmd_sign = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY) certs/signing_key.x509 $@ \
                   $(if $(KBUILD_EXTMOD),|| true)
  else
  quiet_cmd_sign :=
        cmd_sign := :
  endif

  ifeq ($(modules_sign_only),)

  $(dst)/%.ko: $(extmod_prefix)%.ko FORCE

  	$(call cmd,install)

  	$(call cmd,strip)
  	$(call cmd,sign)

  else
  
  $(dst)/%.ko: FORCE
  	$(call cmd,sign)
  
  endif

  #
  # Compression
  #
  quiet_cmd_gzip = GZIP    $@
        cmd_gzip = $(KGZIP) -n -f $<
  quiet_cmd_xz = XZ      $@
        cmd_xz = $(XZ) --lzma2=dict=2MiB -f $<

  quiet_cmd_zstd = ZSTD    $@
        cmd_zstd = $(ZSTD) -T0 --rm -f -q $<

  
  $(dst)/%.ko.gz: $(dst)/%.ko FORCE
  	$(call cmd,gzip)
  
  $(dst)/%.ko.xz: $(dst)/%.ko FORCE
  	$(call cmd,xz)

  $(dst)/%.ko.zst: $(dst)/%.ko FORCE
  	$(call cmd,zstd)

  PHONY += FORCE
  FORCE:

  .PHONY: $(PHONY)