1、环境准备
安装下面这三东西，是为了下载 Harmony 源码
sudo apt install curl
sudo apt install python3-pip
sudo apt install git-lfs
安装下面这五个东西，是为了解决编译到最后报错(头铁不信的，你可以试试，等最后再安装)
sudo apt install default-jdk
sudo apt install mtd-utils
sudo apt install scons
sudo apt install gcc-arm-none-eabi
sudo apt install gcc-arm-linux-gnueabi
sudo apt-get install libxt-dev
sudo apt-get install libx11-dev
sudo apt install xorg-dev
sudo apt-get install liblz4-tool
sudo apt install dwarves
2、安装 repo
务必按照此步骤安装repo。ubuntu默认提供的repo每次启动都会访问googlge服务器，会被墙。
此外20.04下需要root身份执行--否则提示没权限。
curl https://gitee.com/oschina/repo/raw/fork_flow/repo-py3 > /usr/local/bin/repo
chmod a+x /usr/local/bin/repo
pip3 install -i Simple index requests
3、下载源码
[官网版本更新说明}(docs: OpenHarmony documentation | OpenHarmony开发者文档 - Gitee.com)
目前最新为 4.0 版本，内核基于 5.10，老版本 2.x 1.x 已经停止维护，内核基于 4.19
参考官网下载方式
repo init -u OpenHarmony/manifest -b OpenHarmony-4.0-Release --no-repo-verify
repo sync -c
repo forall -c 'git lfs pull'
注意那个 4.0 之前没有 v，以前的版本是有这个 v 的，不然会初始化失败，还有就是注意检查电脑是否断网了
4、下载编译依赖工具包
源码下载完成后，进入根目录执行 bash build/prebuilts_download.sh
看你网速快慢，我这大概10分钟，下载完成后会多出 openharmony_prebuilts 文件夹
5、编译源码
./build.sh --product-name rk3568 --ccache
第一次编译前面阶段 2W 多个文件，后面阶段 6W 多个文件，整体时间看你电脑性能。
编译中间要是出错看提示就行，少啥就自行安装，比如这种
default-jdk is not installed. please install it.
mtd-utils is not installed. please install it.
scons is not installed. please install it.
gcc-arm-none-eabi is not installed. please install it.
gcc-arm-linux-gnueabi is not installed. please install it.
Missing dependencies, please check!
[OHOS INFO] Set cache size limit to 100.0 GB
[OHOS INFO] generated build prop info to /hom
nce:sync_fence
All rules passed
Do NO-Config-Cmds-In-Init rule checking now:
[WARNING]: local_code_sign is not in start cmd list. path:/system/etc/init/local_code_sign.cfg
[WARNING]: intell_voice_service is not in start cmd list. path:/system/etc/init/intell_voice_service.cfg
Please refer to: https://gitee.com/openharmony/developtools_integration_verification/tree/master/tools/startup_guard/rules/NO-Config-Cmds-In-Init/README.md
Do NO-Config-SystemParameter-In-INIT rule checking now:
Please modify according to README.md
[OHOS INFO] rk3568 build success
[OHOS INFO] Cost time: 1:58:23
=====build successful=====
2023-11-29 11:47:19
++++++++++++++++++++++++++++++++++++++++
6、编译错误
1、fatal error: X11/XXXX.h: No such file or directory
[OHOS ERROR] In file included from ../../third_party/flutter/glfw/src/init.c:28:
[OHOS ERROR] In file included from ../../third_party/flutter/glfw/src/internal.h:169:
[OHOS ERROR] ../../third_party/flutter/glfw/src/x11_platform.h:39:10: fatal error: 'X11/Xcursor/Xcursor.h' file not found
[OHOS ERROR] #include <X11/Xcursor/Xcursor.h>
[OHOS ERROR] ^~~~~~~~~~~~~~~~~~~~~~~
[OHOS ERROR] 1 error generated.
[OHOS ERROR] [7497/20650] CC clang_x64/obj/third_party/flutter/glfw/src/glfw/input.o
[OHOS ERROR] FAILED: clang_x64/obj/third_party/flutter/glfw/src/glfw/input.o
sudo apt-get install libxt-dev
sudo apt-get install libx11-dev
sudo apt install xorg-dev
2、error: use of undeclared identifier 'strlen'
[OHOS ERROR] idxVal = (idxVal >= projectModels.size()) ? 0 : idxVal;
[OHOS ERROR] ~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~
[OHOS ERROR] ../../ide/tools/previewer/util/CommandParser.cpp:785:36: warning: comparison of integers of different signs: 'int' and 'std::vector::size_type' (aka 'unsigned long') [-Wsign-compare]
[OHOS ERROR] if (enumValue < 0 || enumValue >= projectModels.size()) {
[OHOS ERROR] ~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~
[OHOS ERROR] ../../ide/tools/previewer/util/CommandParser.cpp:855:24: error: use of undeclared identifier 'strlen'
[OHOS ERROR] size_t argLength = strlen(str);
[OHOS ERROR] ^
[OHOS ERROR] 2 warnings and 1 error generated.
CommandParser.cpp 添加
#include <string.h>
3、kernel编译报错|/bin/sh: 1: lz4c: not found
SORTTAB vmlinux
SYSMAP System.map
OBJCOPY arch/arm64/boot/Image
LZ4 arch/arm64/boot/Image.lz4
/bin/sh: 1: lz4c: not found
make[3]: *** [/home/kevin/disk/code/OpenHarmony4.0/out/kernel/src_tmp/linux-5.10/arch/arm64/boot/Makefile:31: arch/arm64/boot/Image.lz4] Error 127
make[3]: *** Deleting file 'arch/arm64/boot/Image.lz4'
make[2]: *** [arch/arm64/Makefile:162: Image.lz4] Error 2
make[1]: *** [arch/arm64/Makefile:208: rk3568-toybrick-x0-linux.img] Error 2
make[1]: Leaving directory '/home/kevin/disk/code/OpenHarmony4.0/out/kernel/OBJ/linux-5.10'
make: *** [Makefile:185: __sub-make] Error 2
sudo apt-get install liblz4-tool
4、 error: Cannot resolve BTF IDs for CONFIG_DEBUG_INFO_BTF, please install libelf-dev, libelf-devel or elfutils-libelf-devel
[OHOS ERROR] WRAP arch/arm64/include/generated/asm/dma.h
[OHOS ERROR] WRAP arch/arm64/include/generated/asm/emergency-restart.h
[OHOS ERROR] error: Cannot resolve BTF IDs for CONFIG_DEBUG_INFO_BTF, please install libelf-dev, libelf-devel or elfutils-libelf-devel
[OHOS ERROR] WRAP arch/arm64/include/generated/asm/hw_irq.h
[OHOS ERROR] WRAP arch/arm64/include/generated/asm/irq_regs.h
[OHOS ERROR] WRAP arch/arm64/include/generated/asm/kdebug.h
[OHOS ERROR] WRAP arch/arm64/include/generated/asm/kmap_types.h
[OHOS ERROR] WRAP arch/arm64/include/generated/asm/local.h
[OHOS ERROR] WRAP arch/arm64/include/generated/asm/local64.h
[OHOS ERROR] WRAP arch/arm64/include/generated/asm/mm-arch-hooks.h
[OHOS ERROR] WRAP arch/arm64/include/generated/asm/mmiowb.h
[OHOS ERROR] WRAP arch/arm64/include/generated/asm/msi.h
[OHOS ERROR] make[2]: *** [/home/kevin/disk/code/OpenHarmony4.0/out/kernel/src_tmp/linux-5.10/Makefile:1295: prepare-resolve_btfids] Error 1
[OHOS ERROR] make[2]: *** Waiting for unfinished jobs....
[OHOS ERROR] WRAP arch/arm64/include/generated/asm/serial.h
[OHOS ERROR] WRAP arch/arm64/include/generated/asm/switch_to.h
[OHOS ERROR] WRAP arch/arm64/include/generated/asm/trace_clock.h
[OHOS ERROR] WRAP arch/arm64/include/generated/asm/unaligned.h
[OHOS ERROR] WRAP arch/arm64/include/generated/asm/vga.h
[OHOS ERROR] make[1]: *** [arch/arm64/Makefile:208: rk3568-toybrick-x0-linux.img] Error 2
[OHOS ERROR] make[1]: Leaving directory '/home/kevin/disk/code/OpenHarmony4.0/out/kernel/OBJ/linux-5.10'
[OHOS ERROR] make: *** [Makefile:185: __sub-make] Error 2
[OHOS ERROR] Traceback (most recent call last):
sudo apt install dwarves
修改文件路径：
/OpenHarmony4.0/kernel/linux/config/linux-5.10/arch/arm64/configs/
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| k3568_standard_defconfig | 6608 CONFIG_DEBUG_INFO_BTF=y |
修改为 ：
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| rk3568_standard_defconfig | 6608 CONFIG_DEBUG_INFO_BTF is not set |
5、 genext2fs: command not found
[OHOS ERROR] E/write_index_tbl(1498): try to write index entry(./arch/arm64/boot/dts/rockchip/rk3568-toybrick-x0-linux.dtb)...
[OHOS ERROR] E/write_index_tbl(1515): mod fdt path:./arch/arm64/boot/dts/rockchip/rk3568-toybrick-x0-linux.dtb -> rk-kernel.dtb...
[OHOS ERROR] E/write_index_tbl(1498): try to write index entry(logo.bmp)...
[OHOS ERROR] E/write_index_tbl(1498): try to write index entry(logo_kernel.bmp)...
[OHOS ERROR] Image: resource.img (with rk3568-toybrick-x0-linux.dtb logo.bmp logo_kernel.bmp) is ready
[OHOS ERROR] make[1]: Leaving directory '/home/kevin/disk/code/OpenHarmony4.0/out/kernel/OBJ/linux-5.10'
[OHOS ERROR] ~/disk/code/OpenHarmony4.0/out/rk3568
[OHOS ERROR] blocks = 4096 block_size 16384
[OHOS ERROR] ../kernel/src_tmp/linux-5.10/make-boot.sh: line 22: genext2fs: command not found
[OHOS ERROR] Traceback (most recent call last):
sudo apt install genext2fs