你想问为什么自己修改了内核配置 config 文件，但编译的时候似乎没有按照你修改的配置 config 文件进行内核编译，但你应该学习下如何提问，不要在问题中掺杂太多无关记录和没有先验知识的描述。

看了遍好累 , 貌似问题是 重新编译内核。在 config 里 打开 ebpf 但是编译不生效是吧, 你把你改前的 改后的 diff 下 发出来看看

改错了吧，rock5b 有自己的 config 文件，不是 rockchip 的

@AFOX 刚看了，好像没错，抱歉

set -x
V=1
strace -e trace=openat

直接修改 build 目录下的.config 内容，然后 make menuconfig 进图形化界面检查你的开关是否正常开启，确认没问题了再编译测试，持久化保存.config 的修改将.config 复制到另外一个地方存起来

你是不是之前编译完了原版以后没把生成的 build 目录删掉？
看脚本里如果 build/linux-image-*.deb 存在就不编译直接拿现成的打包
https://github.com/Joshua-Riek/ubuntu-rockchip/blob/main/build.sh
213 行

感觉根本没用可还行，起码 zcat /proc/config.gz 然后 grep 下看看有没有对应选项吧。

我看懂 op 的意思了。

按照如下步骤：
1. 准备好 .config
2. `make olddefconfig`
olddefconfig - Same as oldconfig but sets new symbols to their
default value without prompting

这步是补充依赖的 config
3. `make CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm64 `

@feather12315 #9
你可以在第 2 步后 grep 下有没有 BPF 选项

rk 那个框架我记得是最外出脚本编译会覆盖你 menuconfig 配置过的.config 的
当时也被这个恶心了很久

@424778940 所以这里需要怎么调整编译配置让他生效呢

@zzxx3322 build 中不能存在.config 存在编译直接就会报错

@freedomforlong 我是自己写了一套脚本来编译, 就干脆不用他自带那一套了

下面是一些节选, env 你要自己准备了

```
#!/bin/bash

# check env
if [[ "$_BSP" != "114514" ]]; then
echo "You must source scripts/envsetup.sh first!"
exit -1
fi

# function
function kernel_build(){

cd $PATH_KERNEL

export KCONFIG_COnFIG=$BSP_KERNEL_USER_CONFIG

if [[ -f "$BSP_KERNEL_USER_CONFIG" ]]; then
# script/kconfig/merge_config.sh .config $BSP_KERNEL_USER_CONFIG
cp $BSP_KERNEL_USER_CONFIG $BSP_KERNEL_USER_CONFIG.bak_$(date +"%Y%m%d_%H%M%S")
else
echo "Warning: Using BSP DECONFIG since $BSP_KERNEL_USER_CONFIG file not found!!!"
make $BSP_KERNEL_DECONFIG $BSP_KERNEL_DEFCONFIG_FRAGMENT
fi

# kernel
make \
-j $HOST_CORE_COUNT

cd $PATH_BSP_ROOT
}

function kernel_extboot_build(){

cd $PATH_KERNEL

EXTBOOT_IMG=$PATH_KERNEL/extboot.img
EXTBOOT_DIR=$PATH_KERNEL/extboot

rm -rf ${EXTBOOT_DIR} && mkdir -p ${EXTBOOT_DIR}/extlinux

KERNEL_VERSION=$(cat include/config/kernel.release)
echo "label rk-kernel.dtb linux-$KERNEL_VERSION" > $EXTBOOT_DIR/extlinux/extlinux.conf

cp $BSP_KERNEL_ORG_KIMAGE_FILE $EXTBOOT_DIR/Image-$KERNEL_VERSION
echo -e "\tkernel /Image-$KERNEL_VERSION" >> $EXTBOOT_DIR/extlinux/extlinux.conf

cp arch/${ARCH}/boot/dts/rockchip/${BSP_KERNEL_DTS}.dtb $EXTBOOT_DIR
ln -sf ${BSP_KERNEL_DTS}.dtb $EXTBOOT_DIR/rk-kernel.dtb

echo -e "\tfdt /rk-kernel.dtb" >> $EXTBOOT_DIR/extlinux/extlinux.conf

if [[ -e/ramdisk.img ]]; then
cp $PATH_KERNEL/ramdisk.img $EXTBOOT_DIR/initrd-$KERNEL_VERSION
echo -e "\tinitrd /initrd-$KERNEL_VERSION" >> $EXTBOOT_DIR/extlinux/extlinux.conf
fi

cp $BSP_KERNEL_USER_CONFIG $EXTBOOT_DIR/config-$KERNEL_VERSION
cp $PATH_KERNEL/System.map $EXTBOOT_DIR/System.map-$KERNEL_VERSION
cp $PATH_KERNEL/logo.bmp $PATH_KERNEL/logo_kernel.bmp $EXTBOOT_DIR/ || true

make INSTALL_MOD_STRIP=1 INSTALL_MOD_PATH=$EXTBOOT_DIR modules_install

rm -rf $EXTBOOT_IMG && truncate -s $BSP_KERNEL_EXTBOOT_SIZE $EXTBOOT_IMG
fakeroot mkfs.ext4 -Fq -L "boot" -d $EXTBOOT_DIR $EXTBOOT_IMG

cd $PATH_BSP_ROOT
}

function kernel_install(){

cd $PATH_KERNEL

# kernel
# ln -sf $PATH_OUTPUT/$BSP_KERNEL_FINAL_OUTPUT_FILE $PATH_OUTPUT/$BSP_KERNEL_INSTALL_NAME
mv $PATH_KERNEL/$BSP_KERNEL_FINAL_OUTPUT_FILE $PATH_OUTPUT/$BSP_KERNEL_INSTALL_NAME

# modules
rm -rf $PATH_OUTPUT/kernel_modules/*
make modules_install \
-j $HOST_CORE_COUNT \
INSTALL_MOD_STRIP=1 \
INSTALL_MOD_PATH=$PATH_OUTPUT/kernel_modules

cd $PATH_BSP_ROOT
}

function kernel_lazy(){
# task order matters!!!
kernel_build
kernel_extboot_build
# kernel_fit
kernel_install
}

```

处理了一下 env

```shell
#!/bin/bash

# path setup
export PATH_SCRIPTS=$(dirname -- "$( readlink -f -- "$0"; )";)
export PATH_xxx_BSP_ROOT=$(readlink -f -- "$PATH_SCRIPTS/..";)
export PATH_RK_SDK=$PATH_xxx_BSP_ROOT/rk_sdk
export PATH_BOOTLOADER=$PATH_RK_SDK/u-boot
export PATH_KERNEL=$PATH_RK_SDK/kernel
export PATH_BUILDROOT=$PATH_xxx_BSP_ROOT/buildroot-2022.11
export PATH_ROOTFS_OVERLAY=$PATH_xxx_BSP_ROOT/rootfs_overlay
export PATH_SCRIPTS=$PATH_xxx_BSP_ROOT/scripts
export PATH_OUTPUT=$PATH_xxx_BSP_ROOT/output

# magic string for check if this file is sourced
export xxx_BSP="114514"

# build env setup
export HOST_CORE_COUNT=$(nproc)
export ARCH=arm64
# kernel 4.19 is too old to be built with latest GCC, use prebuilt old ones
export CROSS_COMPILE=$PATH_RK_SDK/prebuilts/gcc/linux-x86/aarch64/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-
# BSP env setup
export BSP_TARGET_PRODUCT=rk356x

## bootloader

export BSP_BOOTLOADER_USER_COnFIG=/home/localuser/Downloads/ROC-RK3566-PC/rk3566_xxx_bsp/___xxxconfig/rk/bootloader/.config
export BSP_BOOTLOADER_DECOnFIG=firefly-rk3568_defconfig
export BSP_BOOTLOADER_DEFCONFIG_FRAGMENT=firefly-rk3566.config
# export BSP_BOOTLOADER_LOADER_FINAL_OUTPUT_FILE=*_loader_*.bin
export BSP_BOOTLOADER_LOADER_INSTALL_NAME=MiniLoaderAll.bin
export BSP_BOOTLOADER_UBOOT_FINAL_OUTPUT_FILE=uboot.img
export BSP_BOOTLOADER_UBOOT_INSTALL_NAME=uboot.img

## kernel
export BSP_KERNEL_USER_COnFIG=/home/localuser/Downloads/ROC-RK3566-PC/rk3566_xxx_bsp/___xxxconfig/rk/kernel/.config
export BSP_KERNEL_DECOnFIG=firefly_linux_defconfig
export BSP_KERNEL_DEFCONFIG_FRAGMENT=rk356x_linux.config
export BSP_KERNEL_DTS=rk3566-firefly-roc-pc-mipi101_M101014_BE45_A1
export BSP_KERNEL_ORG_KIMAGE_FILE=arch/$ARCH/boot/Image
# export BSP_KERNEL_BOOT_IMG=extboot.img
export BSP_KERNEL_FIT_ITS=bootramdisk.its
# export BSP_KERNEL_FINAL_OUTPUT_FILE=boot.img.fit
export BSP_KERNEL_FINAL_OUTPUT_FILE=extboot.img
export BSP_KERNEL_INSTALL_NAME=boot.img
### extboot
export BSP_KERNEL_EXTBOOT_SIZE=64M

### BSP_KERNEL_USER_CONFIG must be a vaild path, not just file name

## buildroot
export BSP_BUILDROOT_USER_COnFIG=/home/localuser/Downloads/ROC-RK3566-PC/rk3566_xxx_bsp/___xxxconfig/buildroot/.config
export BSP_BUILDROOT_FINAL_OUTPUT_FILE=rootfs.ext2
export BSP_BUILDROOT_INSTALL_NAME=rootfs.img

## pack image
export BSP_PACKIMG_TOOL_PATH=$PATH_RK_SDK/tools/linux/Linux_Pack_Firmware/rockdev
export BSP_PACKIMG_SCRIPT_FILE=$BSP_PACKIMG_TOOL_PATH/rk356x-mkupdate.sh
export BSP_PACKIMG_AFPTOOL_FILE=$BSP_PACKIMG_TOOL_PATH/afptool
export BSP_PACKIMG_RKIMAGEMAKER_FILE=$BSP_PACKIMG_TOOL_PATH/rkImageMaker
# export BSP_PACKIMG_PACKAGE_FILE=$BSP_PACKIMG_TOOL_PATH/rk356x-package-file
# export BSP_PACKIMG_PARAMETER_FILE=/home/localuser/Downloads/ROC-RK3566-PC/rk3566_xxx_bsp/rk_sdk/device/rockchip/rk356x/parameter-buildroot-fit.txt
export BSP_PACKIMG_PACKAGE_FILE=/home/localuser/Downloads/ROC-RK3566-PC/rk3566_xxx_bsp/___xxxconfig/packimg/rk356x/rk356x-package-file
export BSP_PACKIMG_PARAMETER_FILE=/home/localuser/Downloads/ROC-RK3566-PC/rk3566_xxx_bsp/___xxxconfig/packimg/rk356x/parameter-buildroot-fit.txt
export BSP_PACKIMG_FINAL_OUTPUT_FILE=update.img
export BSP_PACKIMG_INSTALL_NAME=update.img

## flash
export BSP_FLASH_TOOL_PATH=$PATH_RK_SDK/tools/linux/Linux_Upgrade_Tool/Linux_Upgrade_Tool
export BSP_FLASH_TOOL_FILE=$BSP_FLASH_TOOL_PATH/upgrade_tool
```

@NessajCN 好问题 我还真没注意到 我只是感觉它每次都要差不多一个小时包才能出来 我试试看这里

raxda 有自己的编译脚本

https://github.com/radxa-repo/bsp

不知道你的这个项目拉的内核源码中的 device tree 是否匹配

就算基于现在的编译仓库成功编译了 如果匹配不上 dtb 还是没办法让板子跑起来

我下载内核仓库来编译，https://github.com/Joshua-Riek/linux-rockchip ，发现编译完 deb 包安装到系统重启后启动不了了。然后又去编译整个系统，一直从 ppa.launchpad.net 下载东西，一个下午都没下完

@freedomforlong 如果只是构建内核的话，都不会走到 213 行，在 177 行执行完./scripts/build-kernel.sh 就停止了，所以应该不是这个原因。

@kanadeblisst00 我也发现了 你现在直接替换 deb 无法启动吗

@freedomforlong 现在可以了，之前弄错了。我自己看了编译的脚本，rockchip_linux_defconfig 这个文件确实是没用到，真正生成内核配置文件的是 linux-rockchip/debian/rules.d/2-binary-arch.mk 里的第 30 行，也就是用下面三个文件组合的

linux-rockchip/debian.rockchip/config/config.common.ubuntu
linux-rockchip/debian.rockchip/config/arm64/config.common.arm64
linux-rockchip/debian.rockchip/config/arm64/config.flavour.rockchip

所以你修改这三个文件里的任何一个都可以

@kanadeblisst00 非常感谢 这段时间一直没上论坛 有空我试试看