Dimitri John Ledkov
14463ba6a4
During build and install of kernel tree modules are read and copied multiple times around. Similarly, many external dkms packages are built signed and passed around. Those external tools do not support handling compressed module, or cannot process them directly for example for signing. BugLink: https://bugs.launchpad.net/bugs/2028568 Signed-off-by: Dimitri John Ledkov <dimitri.ledkov@canonical.com> Signed-off-by: Andrea Righi <andrea.righi@canonical.com>
169 lines
4.0 KiB
Makefile
169 lines
4.0 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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# ==========================================================================
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# Installing modules
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# ==========================================================================
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PHONY := __modinst
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__modinst:
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include include/config/auto.conf
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include $(srctree)/scripts/Kbuild.include
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install-y :=
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ifeq ($(KBUILD_EXTMOD)$(sign-only),)
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# remove the old directory and symlink
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$(shell rm -fr $(MODLIB)/kernel $(MODLIB)/build)
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install-$(CONFIG_MODULES) += $(addprefix $(MODLIB)/, build modules.order)
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$(MODLIB)/build: FORCE
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$(call cmd,symlink)
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quiet_cmd_symlink = SYMLINK $@
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cmd_symlink = ln -s $(CURDIR) $@
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$(MODLIB)/modules.order: modules.order FORCE
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$(call cmd,install_modorder)
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quiet_cmd_install_modorder = INSTALL $@
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cmd_install_modorder = sed 's:^\(.*\)\.o$$:kernel/\1.ko:' $< > $@
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# Install modules.builtin(.modinfo) even when CONFIG_MODULES is disabled.
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install-y += $(addprefix $(MODLIB)/, modules.builtin modules.builtin.modinfo)
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$(addprefix $(MODLIB)/, modules.builtin modules.builtin.modinfo): $(MODLIB)/%: % FORCE
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$(call cmd,install)
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endif
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modules := $(call read-file, $(MODORDER))
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ifeq ($(KBUILD_EXTMOD),)
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dst := $(MODLIB)/kernel
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else
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INSTALL_MOD_DIR ?= updates
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dst := $(MODLIB)/$(INSTALL_MOD_DIR)
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endif
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$(foreach x, % :, $(if $(findstring $x, $(dst)), \
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$(error module installation path cannot contain '$x')))
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suffix-y :=
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suffix-$(CONFIG_MODULE_COMPRESS_GZIP) := .gz
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suffix-$(CONFIG_MODULE_COMPRESS_XZ) := .xz
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## UBUNTU: Support, but do not require zstd compressed modules
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# Many external dkms and signing rely on uncompressed modules
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# suffix-$(CONFIG_MODULE_COMPRESS_ZSTD) := .zst
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modules := $(patsubst $(extmod_prefix)%.o, $(dst)/%.ko$(suffix-y), $(modules))
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install-$(CONFIG_MODULES) += $(modules)
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__modinst: $(install-y)
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@:
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#
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# Installation
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#
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quiet_cmd_install = INSTALL $@
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cmd_install = cp $< $@
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# Strip
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#
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# INSTALL_MOD_STRIP, if defined, will cause modules to be stripped after they
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# are installed. If INSTALL_MOD_STRIP is '1', then the default option
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# --strip-debug will be used. Otherwise, INSTALL_MOD_STRIP value will be used
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# as the options to the strip command.
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ifdef INSTALL_MOD_STRIP
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ifeq ($(INSTALL_MOD_STRIP),1)
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strip-option := --strip-debug
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else
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strip-option := $(INSTALL_MOD_STRIP)
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endif
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quiet_cmd_strip = STRIP $@
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cmd_strip = $(STRIP) $(strip-option) $@
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else
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quiet_cmd_strip =
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cmd_strip = :
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endif
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#
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# Signing
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# Don't stop modules_install even if we can't sign external modules.
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#
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ifeq ($(filter pkcs11:%, $(CONFIG_MODULE_SIG_KEY)),)
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sig-key := $(if $(wildcard $(CONFIG_MODULE_SIG_KEY)),,$(srctree)/)$(CONFIG_MODULE_SIG_KEY)
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else
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sig-key := $(CONFIG_MODULE_SIG_KEY)
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endif
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quiet_cmd_sign = SIGN $@
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cmd_sign = if test -e $(srctree)/debian/scripts/sign-module && \
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$(srctree)/debian/scripts/sign-module $@ ; \
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then scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(sig-key) certs/signing_key.x509 $@ \
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$(if $(KBUILD_EXTMOD),|| true) ; \
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fi
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ifeq ($(sign-only),)
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# During modules_install, modules are signed only when CONFIG_MODULE_SIG_ALL=y.
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ifndef CONFIG_MODULE_SIG_ALL
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quiet_cmd_sign :=
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cmd_sign := :
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endif
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# Create necessary directories
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$(foreach dir, $(sort $(dir $(install-y))), $(shell mkdir -p $(dir)))
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$(dst)/%.ko: $(extmod_prefix)%.ko FORCE
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$(call cmd,install)
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$(call cmd,strip)
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$(call cmd,sign)
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ifdef CONFIG_MODULES
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__modinst: depmod
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PHONY += depmod
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depmod: $(install-y)
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$(call cmd,depmod)
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quiet_cmd_depmod = DEPMOD $(MODLIB)
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cmd_depmod = $(srctree)/scripts/depmod.sh $(KERNELRELEASE)
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endif
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else
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$(dst)/%.ko: FORCE
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$(call cmd,sign)
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endif
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#
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# Compression
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#
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quiet_cmd_gzip = GZIP $@
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cmd_gzip = $(KGZIP) -n -f $<
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quiet_cmd_xz = XZ $@
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cmd_xz = $(XZ) --check=crc32 --lzma2=dict=1MiB -f $<
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quiet_cmd_zstd = ZSTD $@
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cmd_zstd = $(ZSTD) -T0 --rm -f -q $<
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$(dst)/%.ko.gz: $(dst)/%.ko FORCE
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$(call cmd,gzip)
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$(dst)/%.ko.xz: $(dst)/%.ko FORCE
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$(call cmd,xz)
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$(dst)/%.ko.zst: $(dst)/%.ko FORCE
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$(call cmd,zstd)
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PHONY += FORCE
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FORCE:
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.PHONY: $(PHONY)
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