1.必须的依赖包

1. PC gt; sudo apt-get update
   
2. PC gt; sudo apt-get install bison flex sed wget curl cvs subversion git-core coreutils unzip texi2html
   
3. texinfo docbook-utils gawk python-pysqlite2 diffstat help2man make gcc build-essential g++ desktop-file-utils chrpath libxml2-utils xmlto docbook
   
4. bsdmainutils iputils-ping cpio python-wand python-pycryptopp python-crypto
   
5. PC gt; sudo apt-get install libsdl1.2-dev xterm corkscrew nfs-common nfs-kernel-server device-tree-compiler mercurial u-boot-tools libarchive-zip-perl
   
6. PC gt; sudo apt-get install ncurses-dev bc linux-headers-generic gcc-multilib libncurses5-dev libncursesw5-dev lrzsz dos2unix lib32ncurses5 repo libssl-dev

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2.repo 获取源码

#repo init -u -b refs/tags/openstlinux-5.4-dunfell-mp1-20-06-24

1. repo init -u  -b refs/tags/openstlinux-20-02-19

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fatal: Cannot get
fatal: error [Errno 101] Network is unreachable
解决方法：先单独克隆repo

1. git clone
   
2. mkdir .repo
   
3. mv git-repo/ repo
   
4. mv repo .repo
   
5. repo sync -c -j8

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单独更新

1. repo sync --force-sync layers/meta-openembedded/
   
2. repo sync --force-sync layers/meta-openembedded/
   
3. repo sync --force-sync layers/meta-st/meta-st-openstlinux/
   
4. repo sync --force-sync layers/openembedded-core/
   
5. repo sync --force-sync layers/openembedded-core/bitbake/
   
6. repo sync

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源码获取完成，编译Distribution Package。

1. PC gt; DISTRO=openstlinux-weston MACHINE=stm32mp1 source layers/meta-st/scripts/envsetup.sh
   
2. PC gt; bitbake st-image-wseton    //编译镜像PC gt; bitbake st-image-weston  -c fetchall  //编译镜像

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4.bitbake常用的一些命令

1. bitbake st-image-wseton -f //忽略某个包的错误，执行下去。可以减少编译等待时间。
   
2. bitbake st-image-wseton -c fetchall  //-C用于执行特定命令，这里fetchall.
   
3. bitbake -e linux-imx | grep ^SRC_URI=  //软件包下载地址
   
4. bitbake -s | grep linux      //查找所有包并显示包含有linux名字的包
   
5. bitbake -e linux-imx  | grep ^S=    //编译目录
   
6. bitbake linux-imx -C compile   //编译内核和dtb,-C的C是大写
   
7. bitbake opencv -c fetch
   
8. bitbake opencv -c clean
   
9. 
   
10. bitbake -k core-image-minimal
    
11. bitbake xx-image -c listtasks
    
12. bitbake -s | grep packagename
    
13. bitbake -e xxx-image | grep ^SRC_URI=
    
14. 查看软件依赖
    
15. bitbake -g  packagename

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1. bitbake -c clean -v u-boot
   
2. bitbake -c cleanall     xx-image            #清除所有编译中间
   
3. bitbake -c cleansstate   xx-image            #清除编译         
   
4. 生成编译中的配置文件和类文件
   
5. bitbake -e > mybuild.log
   
6. 
   
7. bitbake -b 加上.bb文件的路径，即可以直接执行这个.bb文件
   
8. #查找包的原路径
   
9. bitbake -e linux-stm32mp | grep ^SRC_URI=
   
10. #查找包的bblayer
    
11. bitbake -e linux-stm32mp | grep ^S

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5.bitbake 命令续

1. bitbake -e linux-stm32mp | grep ^S=
   
2. S="/home/fdw/32mp1/openstlinux-200219/build-openstlinuxweston-stm32mp1/tmp-glibc/work/stm32mp1-ostl-linux-gnueabi/linux-stm32mp/4.19-r0/linux-4.19.94"
   
3. bitbake -e m4projects-stm32mp1 | grep ^S=
   
4. S="/home/fdw/32mp1/openstlinux-200219/build-openstlinuxweston-stm32mp1/tmp-glibc/work/stm32mp1-ostl-linux-gnueabi/m4projects-stm32mp1/1.2.0-r0/git
   
5. 
   
6. bitbake -s | grep opencv
   
7. PC gt;  find . -type f -iname "opencv*.bb"
   
8. ./layers/meta-openembedded/meta-oe/recipes-support/opencv/opencv_3.4.3.bb

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6.linux 内核实例

1. PC gt; devtool modify virtual/kernel
   
2. PC gt; ls workspace/sources/linux-stm32mp/
   
3. 
   
4. Board gt; dmesg | grep -i cma
   
5. PC gt;grep -i CONFIG_CMA_SIZE_MBYTES ./workspace/sources/linux-stm32mp/ -nr
   
6. 
   
7. PC gt; bitbake virtual/kernel -c menuconfig
   
8. PC gt; bitbake virtual/kernel -C compile
   
9. 
   
10. $ bitbake -c menuconfig virtual/kernel
    
11. $ bitbake -c compile -f -v virtual/kernel 单独编译内核
    
12. $ bitbake -c compile_kernelmodules -f -v virtual/kernel 单独编译模块
    
13. $ bitbake -c deploy -f -v virtual/kernel  然后部署编译输出镜像

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1. #devtool build because the build makes compile,
   
2. #compile_kernemodules and install commands
   
3. Board gt; mount /dev/mmcblk0p4 /boot
   
4. PC gt; scp <build dir>/../../*.dtb root@<board ip address>:/boot
   
5. Board gt; cd /boot; sync; systemctl reboot
   
6. 
   
7. vim workspace/sources/linux-stm32mp/arch/arm/boot/dts/stm32mp157a-dk1.dts
   
8. bitbake virtual/kernel -C compile

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1. PC gt; vim workspace/sources/linux-stm32mp/drivers/media/platform/vivid/vivid-core.c
   
2. PC gt; bitbake virtual/kernel -C compile
   
3. #Update the vivid kernel module on the board
   
4. PC gt; devtool deploy-target -Ss linux-stm32mp  :/
   
5. Board gt; /sbin/depmod -a
   
6. Board gt; sync
   
7. Board gt; modprobe vivid     

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1. scp tmp-glibc/deploy/images/stm32mp1/stm32mp157*.dtb :/boot
   
2. scp tmp-glibc/deploy/images/stm32mp1/uImage*:/boot
   
3. rm -rf /home/fdw/.ssh/known_hosts

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6.uboot实例

1. PC gt; devtool search u-boot*
   
2. PC gt; devtool modify u-boot-stm32mp
   
3. #cd <build dir>/workspace/sources/u-boot-stm32mp
   
4. PC gt; devtool build u-boot-stm32mp
   
5. PC gt; bitbake u-boot-stm32mp -c deploy
   
6. #ums 0 mmc 0
   
7. PC gt; dd if=u-boot-<board name>-trusted.stm32 of=/dev/sdc3 bs=1M conv=fdatasync

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7.tf-A实例

1. PC gt; devtool search tf-a*
   
2. PC gt; devtool modify tf-a-stm32mp
   
3. #PC gt; cd <build dir>/workspace/sources/tf-a-stm32mp
   
4. PC gt; vim ./plat/st/stm32mp1/bl2_io_storage.c
   
5. PC gt; devtool build tf-a-stm32mp
   
6. #bitbake tf-a-stm32mp
   
7. PC gt; bitbake tf-a-stm32mp -c deploy
   
8. PC gt; dd if=tf-a-<board name>-trusted.stm32 of=/dev/sdc1 bs=1M conv=fdatasync

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8.应用程序 “hello world”

1. PC gt; mkdir hello_world_example
   
2. PC gt; cd hello_world_example
   
3. PC gt; vim hello_world_example.c
   
4. PC gt; cd <build dir>
   
5. #Add a new recipe to the workspace
   
6. PC gt; devtool add myhelloworld hello_world_example/
   
7. #Adapt recipe
   
8. PC gt; devtool edit-recipe myhelloworld
   
9. PC gt; devtool build myhelloworld
   
10. PC gt; devtool deploy-target -s myhelloworld

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9.m4projects-stm32

1. Board gt; cd <path_to_your_workspace>/build-<name_of_distro>
   
2. 
   
3. Clean the m4projects build folder
   
4. Board gt; bitbake m4projects-stm32mp1 -f -c cleanall
   
5. 
   
6. Rebuild the recipe m4projects
   
7. Board gt; bitbake m4projects-stm32mp1
   
8. 
   
9. Rebuild the image
   
10. Board gt; bitbake st-image-weston

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二.devtool的总结

1. devtool modify tf-a-stm32mp
   
2. bitbake tf-a-stm32mp
   
3. 
   
4. devtool search u-boot*
   
5. devtool modify u-boot-stm32mp
   
6. bitbake u-boot-stm32mp
   
7. 
   
8. devtool modify linux-stm32mp
   
9. bitbake linux-stm32mp

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1. NOTE: Starting bitbake server...
   
2. usage: devtool [--basepath BASEPATH] [--bbpath BBPATH] [-d] [-q]
   
3.                [--color COLOR] [-h]
   
4.                <subcommand> ...
   
5. 
   
6. OpenEmbedded development tool
   
7. 
   
8. options:
   
9.   --basepath BASEPATH  Base directory of SDK / build directory
   
10.   --bbpath BBPATH      Explicitly specify the BBPATH, rather than getting it
    
11.                        from the metadata
    
12.   -d, --debug          Enable debug output
    
13.   -q, --quiet          Print only errors
    
14.   --color COLOR        Colorize output (where COLOR is auto, always, never)
    
15.   -h, --help           show this help message and exit
    
16. 
    
17. subcommands:
    
18.   Beginning work on a recipe:
    
19.     add                  Add a new recipe
    
20.     modify               Modify the source for an existing recipe
    
21.     upgrade              Upgrade an existing recipe
    
22.   Getting information:
    
23.     status               Show workspace status
    
24.     search               Search available recipes
    
25.   Working on a recipe in the workspace:
    
26.     build                Build a recipe
    
27.     rename               Rename a recipe file in the workspace
    
28.     edit-recipe          Edit a recipe file in your workspace
    
29.     find-recipe          Find a recipe file in your workspace
    
30.     configure-help       Get help on configure script options
    
31.     update-recipe        Apply changes from external source tree to recipe
    
32.     reset                Remove a recipe from your workspace
    
33.     finish               Finish working on a recipe in your workspace
    
34.   Testing changes on target:
    
35.     deploy-target        Deploy recipe output files to live target machine
    
36.     undeploy-target      Undeploy recipe output files in live target machine
    
37.     build-image          Build image including workspace recipe packages
    
38.   Advanced:
    
39.     create-workspace     Set up workspace in an alternative location
    
40.     import               Import exported tar archive into workspace
    
41.     extract              Extract the source for an existing recipe
    
42.     sync                 Synchronize the source tree for an existing recipe
    
43.     export               Export workspace into a tar archive
    
44. Use devtool <subcommand> --help to get help on a specific command

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