Yocto：从bbfile到sdk

创建bb file：

poky/meta/recipes-devtools/nativesdk-custom-ps1-setting/nativesdk-custom-ps1-setting.bb

$ vi ../../poky/meta/recipes-devtools/nativesdk-custom-ps1-setting/nativesdk-custom-ps1-setting.bb 

LICENSE = "CLOSED"

inherit nativesdk

do_generate(){
    echo "export PS1=\"(yocto-sdk) \${PS1}\"" > ${B}/custom-ps1-setting.sh
}

do_install(){
    install -d ${D}/environment-setup.d/
    cp ${B}/custom-ps1-setting.sh ${D}/environment-setup.d/
}

addtask generate

PACKAGES = "${PN}"
FILES_${PN} = "/"

do_generate() 创建文件：build/tmp/work/x86_64-nativesdk-pokysdk-linux/nativesdk-custom-ps1-setting/1.0-r0/custom-ps1-setting-1.0/custom-ps1-setting.sh

${D}: tmp/deploy/

生成的rpm在：build/tmp/deploy/rpm/x86_64_nativesdk/nativesdk-custom-ps1-setting-1.0-r0.x86_64_nativesdk.rpm

生成SDK：

将nativesdk-custom-ps1-setting添加到build/conf/local.conf的TOOLCHAIN_HOST_TASK中：

TOOLCHAIN_HOST_TASK += "nativesdk-custom-ps1-setting"

编译修改后的SDK：

$ bitbake meta-toolchain
WARNING: Host distribution "RedHatEnterpriseLinuxServer-7.5" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
Parsing recipes: 100% |##########################################################################################################################################################################| Time: 00:00:02
Parsing of 873 .bb files complete (0 cached, 873 parsed). 1303 targets, 49 skipped, 0 masked, 0 errors.
NOTE: Resolving any missing task queue dependencies

Build Configuration:
BB_VERSION        = "1.30.0"
BUILD_SYS         = "x86_64-linux"
NATIVELSBSTRING   = "universal"
TARGET_SYS        = "i586-poky-linux"
MACHINE           = "qemux86"
DISTRO            = "poky"
DISTRO_VERSION    = "2.1.3"
TUNE_FEATURES     = "m32 i586"
TARGET_FPU        = ""
meta              
meta-poky         
meta-yocto-bsp    = "krogoth:73cc31c11a9d75a2f4204a9a8c6832c6e505a86a"

NOTE: Preparing RunQueue
NOTE: Executing SetScene Tasks
NOTE: Executing RunQueue Tasks
NOTE: Tasks Summary: Attempted 733 tasks of which 731 didn't need to be rerun and all succeeded.

Summary: There was 1 WARNING message shown.
$ ls tmp/deploy/sdk/poky-glibc-x86_64-meta-toolchain-i586-toolchain-2.1.3.* -al
-rw-r--r-- 1 ca root       49 May 23 14:39 tmp/deploy/sdk/poky-glibc-x86_64-meta-toolchain-i586-toolchain-2.1.3.host.manifest
-rwxr-xr-x 1 ca root 14879818 May 23 14:39 tmp/deploy/sdk/poky-glibc-x86_64-meta-toolchain-i586-toolchain-2.1.3.sh
-rw-r--r-- 1 ca root     1220 May 23 14:39 tmp/deploy/sdk/poky-glibc-x86_64-meta-toolchain-i586-toolchain-2.1.3.target.manifest

安装SDK：

$ ./tmp/deploy/sdk/poky-glibc-x86_64-meta-toolchain-i586-toolchain-2.1.3.sh 
Poky (Yocto Project Reference Distro) SDK installer version 2.1.3
=================================================================
Enter target directory for SDK (default: /opt/poky/2.1.3): /var/fpwork/alice/poky/build/poky_install
You are about to install the SDK to "/var/fpwork/alice/poky/build/poky_install". Proceed[Y/n]? y
Extracting SDK.................done
Setting it up...done
SDK has been successfully set up and is ready to be used.
Each time you wish to use the SDK in a new shell session, you need to source the environment setup script e.g.
 $ . /var/fpwork/alice/poky/build/poky_install/environment-setup-i586-poky-linux

指定安装目录 -d：

$ ./tmp/deploy/sdk/poky-glibc-x86_64-meta-toolchain-i586-toolchain-2.1.3.sh -d /var/fpwork/alice/poky/build/poky_install -y

执行SDK环境变量设置脚本：

$ echo $CC

[@hz-build-cloud-cbts02-okqvd build]$ source /var/fpwork/alice/poky/build/poky_install/environment-setup-i586-poky-linux
[@hz-build-cloud-cbts02-okqvd build]$ echo $CC
i586-poky-linux-gcc -m32 -march=i586 --sysroot=/var/fpwork/alice/poky/build/poky_install/sysroots/i586-poky-linux

 

All results are located in tmp/ directory:

• tmp/deploy/sdk/*.sh – toolchain installer
• tmp/deploy/ipk/ – package feeds  (for run-time dependencies)
• tmp/sysroots/* – sysroots for build-time dependencies
• tmp/environment-setup* – environment setup script for Quasi-BitBake mode