update 2026-05-10 09:48:30

2026-09-11 02:44:23 +08:00 · 2026-05-10 09:48:30 +08:00
parent 95ac96413e
commit 0b362674f1
6244 changed files with 2992248 additions and 0 deletions
@@ -0,0 +1,121 @@
+#
+# Copyright (C) 2015-2024 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v3.
+#
+
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/kernel.mk
+
+PKG_NAME:=vmlinux-btf
+PKG_VERSION:=$(LINUX_VERSION)
+PKG_RELEASE:=6
+
+include $(INCLUDE_DIR)/package.mk
+
+PKG_BUILD_PARALLEL:=1
+
+define Package/vmlinux-btf
+  SECTION:=kernel
+  CATEGORY:=Kernel
+  TITLE:=Kernel vmlinux.btf for CO-RE compatibility
+endef
+
+define Package/vmlinux-btf/description
+  Supplies kernel BTF information to ensure CO-RE eBPF compatibility.
+  This package builds a shadow kernel tree using the OpenWrt kernel source,
+  applies the same patches/files, and generates detached BTF information
+  without modifying the main kernel build directory.
+endef
+
+define Package/vmlinux-btf/postinst
+#!/bin/sh
+if [ -z "$${IPKG_INSTROOT}" ]; then
+	ln -sf /usr/lib/debug/boot/vmlinux /usr/lib/debug/boot/vmlinux-$$(uname -r)
+fi
+endef
+
+define Package/vmlinux-btf/prerm
+#!/bin/sh
+if [ -z "$${IPKG_INSTROOT}" ]; then
+	rm -f /usr/lib/debug/boot/vmlinux-$$(uname -r)
+fi
+endef
+
+PAHOLE_JOBS := $(if $(filter -j%,$(PKG_JOBS)),$(patsubst -j%,%,$(filter -j%,$(PKG_JOBS))),1)
+
+define Build/Prepare
+	mkdir -p $(PKG_BUILD_DIR)
+
+	$(TAR) -C $(PKG_BUILD_DIR) -xf $(DL_DIR)/$(LINUX_SOURCE)
+	mv $(PKG_BUILD_DIR)/linux-$(LINUX_VERSION) $(PKG_BUILD_DIR)/shadow-kernel
+
+	cp $(LINUX_DIR)/.config $(PKG_BUILD_DIR)/shadow-kernel/.config
+endef
+
+define Build/Compile
+	$(PKG_BUILD_DIR)/shadow-kernel/scripts/config \
+		--file $(PKG_BUILD_DIR)/shadow-kernel/.config \
+		--disable WERROR \
+		--enable CGROUPS \
+		--enable CGROUP_BPF \
+		--enable SOCK_CGROUP_DATA \
+		--enable KALLSYMS \
+		--enable PERF_EVENTS \
+		--enable TRACEPOINTS \
+		--enable KPROBES \
+		--enable UPROBES \
+		--enable BPF \
+		--enable BPF_SYSCALL \
+		--enable BPF_JIT \
+		--enable BPF_JIT_DEFAULT_ON \
+		--enable INET \
+		--enable NET_INGRESS \
+		--enable NET_EGRESS \
+		--enable BPF_STREAM_PARSER \
+		--enable XDP_SOCKETS \
+		--enable NET_SCHED \
+		--enable NET_SCH_INGRESS \
+		--enable NET_CLS \
+		--enable NET_CLS_ACT \
+		--enable KPROBE_EVENTS \
+		--enable UPROBE_EVENTS \
+		--enable BPF_EVENTS \
+		--enable DEBUG_KERNEL \
+		--enable DEBUG_INFO \
+		--disable DEBUG_INFO_NONE \
+		--enable DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT \
+		--disable DEBUG_INFO_REDUCED \
+		--disable DEBUG_INFO_SPLIT \
+		--enable DEBUG_INFO_BTF \
+		--set-str EXTRA_FIRMWARE "" \
+		--set-str INITRAMFS_SOURCE ""
+
+	$(MAKE) -C $(PKG_BUILD_DIR)/shadow-kernel \
+		$(KERNEL_MAKE_FLAGS) \
+		KBUILD_HOSTLDFLAGS="$(KBUILD_HOSTLDFLAGS) -lz" \
+		olddefconfig
+
+	$(MAKE) -C $(PKG_BUILD_DIR)/shadow-kernel \
+		$(KERNEL_MAKE_FLAGS) \
+		$(PKG_JOBS) \
+		KBUILD_HOSTLDFLAGS="-L$(STAGING_DIR_HOST)/lib -lz" \
+		vmlinux
+
+	pahole \
+		--jobs=$(PAHOLE_JOBS) \
+		--btf_encode_detached=$(PKG_BUILD_DIR)/vmlinux-btf \
+		$(PKG_BUILD_DIR)/shadow-kernel/vmlinux
+endef
+
+define Build/Clean
+	rm -rf $(PKG_BUILD_DIR)
+endef
+
+define Package/vmlinux-btf/install
+	$(INSTALL_DIR) $(1)/usr/lib/debug/boot
+	$(INSTALL_DATA) $(PKG_BUILD_DIR)/vmlinux-btf $(1)/usr/lib/debug/boot/vmlinux
+	$(LN) vmlinux $(1)/usr/lib/debug/boot/vmlinux-$(LINUX_VERSION)
+endef
+
+$(eval $(call BuildPackage,vmlinux-btf))