81 lines
2.2 KiB
Makefile
81 lines
2.2 KiB
Makefile
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LINUX_VERSION = 6.1.8
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KERNEL_VERSION = linux-$(LINUX_VERSION)
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KERNEL_DOWNLOAD = https://cdn.kernel.org/pub/linux/kernel/v6.x/$(KERNEL_VERSION)
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PWD = $(shell pwd)
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NPROC = $(shell nproc)
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PATCH_FILES := $(shell find patches/ -name "00*.patch" | sort)
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KERNEL_DL_PATH = downloads/$(KERNEL_VERSION).tar
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KERNEL_BUILD_PATH = $(KERNEL_VERSION)
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KERNEL_BUILD_OUTPUT = $(KERNEL_BUILD_PATH)/vmlinux
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PH_LINUX = ph_linux
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PH_LINUX_VER = $(PH_LINUX)-$(LINUX_VERSION)
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SHA256_FILE = v$(KERNEL_VERSION).sha256
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$(shell mkdir -p downloads)
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$(shell mkdir -p .work)
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SHA256_SENTINEL = .work/.sha256-verififed
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.PHONY: all gen-sha256
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all: $(KERNEL_BUILD_OUTPUT) $(PH_LINUX_VER)
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$(KERNEL_DL_PATH):
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@echo "Downloading $(KERNEL_DOWNLOAD).tar.xz"
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@cd downloads; rm -f $(KERNEL_VERSION).tar.xz
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@cd downloads; wget --quiet $(KERNEL_DOWNLOAD).tar.xz
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@cd downloads; unxz $(KERNEL_VERSION).tar.xz
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@cd downloads; wget --quiet $(KERNEL_DOWNLOAD).tar.sign
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$(KERNEL_BUILD_PATH): $(KERNEL_DL_PATH) $(SHA256_SENTINEL)
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rm -rf .work/$(KERNEL_VERSION)
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tar -C .work -xf downloads/$(KERNEL_VERSION).tar
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for p in $(PATCH_FILES); do patch -p1 -d .work/$(KERNEL_VERSION) < "$$p"; done
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cp config .work/$(KERNEL_VERSION)/.config
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rm -rf ./$(KERNEL_VERSION)
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mv .work/$(KERNEL_VERSION) .
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$(PH_LINUX_VER): $(KERNEL_BUILD_OUTPUT)
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rm -f $(PH_LINUX)
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cp $(KERNEL_BUILD_OUTPUT) $(PH_LINUX_VER)
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strip $(PH_LINUX_VER)
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ln -s $(PWD)/$(PH_LINUX_VER) $(PH_LINUX)
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$(KERNEL_BUILD_OUTPUT): $(KERNEL_BUILD_PATH)
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cd $(KERNEL_VERSION); make -j$(NPROC) vmlinux
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clean:
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rm -rf $(KERNEL_BUILD_PATH) $(SHA256_SENTINEL) $(PH_LINUX_VER) $(PH_LINUX) .work
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$(SHA256_SENTINEL): $(KERNEL_DL_PATH)
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sha256sum -c v$(LINUX_VERSION).sha256
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touch $@
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gen-sha256: $(SHA256_FILE)
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GPGTMP = verify-tmp/
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GPGOPTS = --homedir $(GPGTMP) --trust-model direct --no-autostart
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GPG_IMPORT = gpg $(GPGOPTS) --import
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GPG_VERIFY = gpg $(GPGOPTS) --verify
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$(KERNEL_DL_PATH).verify: $(KERNEL_DL_PATH)
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rm -rf $(GPGTMP)
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mkdir -m 0700 $(GPGTMP)
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$(GPG_IMPORT) < keys/torvalds.key
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$(GPG_IMPORT) < keys/gregkh.key
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$(GPG_VERIFY) downloads/$(KERNEL_VERSION).tar.sign $(KERNEL_DL_PATH) 2> .out
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mv .out $(KERNEL_DL_PATH).verify
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rm -rf $(GPGTMP)
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$(SHA256_FILE): $(KERNEL_DL_PATH).verify
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sha256sum $(KERNEL_DL_PATH) > v$(LINUX_VERSION).sha256
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