Question

嗨，这是我的图层树

├── conf
│   └── layer.conf
├── COPYING.MIT
├── README
└── recipes-hello
    ├── helloworld
    │   ├── helloworld-0.1
    │   │   ├── helloworld.c
    │   │   ├── helloworld.patch
    │   │   └── newhelloworld.c
    │   └── helloworld_0.1.bb
    ├── message
    │   ├── message-0.1
    │   │   └── message.txt
    │   └── message_0.1.bb
    └── service
        ├── service-0.1
        │   ├── test_systemd.service
        │   └── test_systemd.sh
        └── service_0.1.bb

这里test_systemd.service是必须调用test_systemd.sh的服务文件，我试图用service_0.1.bb来实现

    # This recipe performs the following tasks
    # 1) Install .sh file in /home/root/ and .sh script creates a random text file
    # 2) Install the .service file in systemd directory
    # 3) Invoke the .sh script via .service file
    inherit systemd

SUMMARY = "Install and start a systemd service"
SECTION = "examples"
LICENSE = "MIT"
LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"

#here we specify the source we want to build
SRC_URI = "file://test_systemd.sh"
SRC_URI += "file://test_systemd.service"
#here we specify the source directory, where we can do all the building and expect sources to be placed
S = "${WORKDIR}"

SYSTEMD_SERVICE_${PN} = "test_systemd.service"


#bitbake task
#created a directory /home/root for target install the script
do_install() {
             install -d ${D}/home/root
             install -m 0755 ${WORKDIR}/test_systemd.sh ${D}/home/root

             install -d ${D}{systemd_system_unitdir}
             install -m 0644 ${WORKDIR}/test_systemd.service ${D}{systemd_system_unitdir}
}

#Pack the path
FILES_${PN} += "/home/root"
FILES_${PN} += "/lib/systemd/system"

REQUIRED_DISTRO_FEATURES= "systemd"

问题是当我尝试bitbake系统配方时，bitbake抛出一个错误，说找不到test_systemd.service。我设法在之前的尝试中安装了RFS中的两个文件，但是当我包含systemd概念时。我得到没有这样的文件错误。可能是什么原因？错误消息

 NOTE: Executing SetScene Tasks
NOTE: Executing RunQueue Tasks
ERROR: service-0.1-r0 do_package: SYSTEMD_SERVICE_service value test_systemd.service does not exist
ERROR: service-0.1-r0 do_package: Function failed: systemd_populate_packages
ERROR: Logfile of failure stored in: /home/guest/yocto_practice/poky/build-beaglebone/tmp/work/cortexa8hf-neon-poky-linux-gnueabi/service/0.1-r0/temp/log.do_package.2860
ERROR: Task (/home/guest/yocto_practice/meta-testlayer/recipes-hello/service/service_0.1.bb:do_package) failed with exit code '1'
NOTE: Tasks Summary: Attempted 514 tasks of which 506 didn't need to be rerun and 1 failed.

Summary: 1 task failed:
  /home/guest/yocto_practice/meta-testlayer/recipes-hello/service/service_0.1.bb:do_package
Summary: There were 2 ERROR messages shown, returning a non-zero exit code.

这也是为systemd编写bb配方的正确方法，写这个

的意义是什么

#Pack the path
    FILES_${PN} += "/home/root"
    FILES_${PN} += "/lib/systemd/system"

没有这个bitbake引发错误。

Answer 1

<h1>Angualr + Material</h1>
<button md-raised-button (click)="addEvent()">Add row for all ... to array</button>
<br><br>
<table-cart [tableData]="tableData"></table-cart>
<br><br>
<span>The same page but other place for example in other tab</span>
<br><br>
<table-cart [tableData]="tableData"></table-cart>

这应该是：

SYSTEMD_SERVICE_${PN} += "file://test_systemd.service"

其他注释（与错误无关）：

将内容安装到/ home可能不是一个好主意（您可以将SYSTEMD_SERVICE_${PN} = "test_systemd.service"用于其他脚本所需的脚本。
没有理由在bb文件中添加${libexecdir}：您可以将所有内容放入do_install_append()
如果你的Yocto是最近的，那么使用do_install()代替${systemd_system_unitdir}是一个好主意（在旧版/lib/systemd/system中有效）

Answer 2

为了解决此包装错误，我使用了以下安装步骤

do_install() {
   install -d ${D}${bindir}
   install -m 0755 ${WORKDIR}/test_systemd.sh ${D}${bindir}
   install -d ${D}${systemd_unitdir}/system
   install -m 0644 ${WORKDIR}/test_systemd.service ${D}${systemd_unitdir}/system
}

使用yocto启用systemd服务

2 个答案: