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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link="#0563C1" vlink="#954F72" style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoPlainText><span lang=EN-US>Hi Paul, <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US> So, bitbake will parse base.bbclass first and then execute the code line by line until parse "inherit some_guys", does it? And if I modify the content of the .bb recipe like this:<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>## start <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>require xxxxx.inc<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>DESCRIPTION = "xxx"<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>PACKAGES = "xxx"<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>inherit others-1 others-2<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>PACKAGES += "yyy"<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>inherit others-3 others-4<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>## end<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>So, I think the flow is <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal align=left style='text-align:left'><span lang=EN-US style='font-size:12.0pt;font-family:宋体'><img width=684 height=490 style='width:7.125in;height:5.1041in' id="图片_x0020_1" src="cid:image002.jpg@01D41A8E.423A4420"></span><span lang=EN-US style='font-size:12.0pt;font-family:宋体'><o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>And, am I right?<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>Thanks.<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>-----</span><span style='font-family:等线'>邮件原件</span><span lang=EN-US>-----<br></span><span style='font-family:等线'>发件人</span><span lang=EN-US>: Paul Eggleton <paul.eggleton@linux.intel.com> <br></span><span style='font-family:等线'>发送时间</span><span lang=EN-US>: 2018</span><span style='font-family:等线'>年</span><span lang=EN-US>7</span><span style='font-family:等线'>月</span><span lang=EN-US>12</span><span style='font-family:等线'>日</span><span lang=EN-US> 18:51<br></span><span style='font-family:等线'>收件人</span><span lang=EN-US>: developer_agl@xtev.cn<br></span><span style='font-family:等线'>抄送</span><span lang=EN-US>: bitbake-devel@lists.openembedded.org<br></span><span style='font-family:等线'>主题</span><span lang=EN-US>: Re: [bitbake-devel] </span><span style='font-family:等线'>转发</span><span lang=EN-US>: About bitbake tasks</span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>On Thursday, 12 July 2018 12:15:07 PM CEST <a href="mailto:developer_agl@xtev.cn"><span style='color:windowtext;text-decoration:none'>developer_agl@xtev.cn</span></a> wrote:<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>> I</span><span lang=EN-US style='font-family:"Courier New"'>’</span><span lang=EN-US>m new to bitbake. And I have some questions about bitbake tasks <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>> mechanism and inherit mechanism. If a xxx.bb recipe content like this :<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>> <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>> ##start<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>> <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>> DESCRIPTION = </span><span lang=EN-US style='font-family:"Courier New"'>”</span><span lang=EN-US>xxxxxxxxx</span><span lang=EN-US style='font-family:"Courier New"'>”</span><span lang=EN-US><o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>> <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>> XXX_XXXX = </span><span lang=EN-US style='font-family:"Courier New"'>“</span><span lang=EN-US>${XXXXXXXX}</span><span lang=EN-US style='font-family:"Courier New"'>”</span><span lang=EN-US><o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>> <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>> inherit some_guys<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>> <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>> ##end<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>> <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>> And Bitbake User Manual said that </span><span lang=EN-US style='font-family:"Courier New"'>‘</span><span lang=EN-US>The minimally required class for <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>> BitBake is the classes/base.bbclass file. The base class is implicitly <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>> inherited by every recipe.</span><span lang=EN-US style='font-family:"Courier New"'>’</span><span lang=EN-US> So which .bbclass should be parsed first, <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>> some_guys.bbclass or base.bbclass? I</span><span lang=EN-US style='font-family:"Courier New"'>’</span><span lang=EN-US>m really confused about that.<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>Effectively, base.bbclass will be parsed first, then the lines in the recipe up to inherit some_guys, then some_guys.bbclass, and then the lines in the recipe that follow (in this case just a comment).<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>Cheers,<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Paul<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>-- <o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US>Paul Eggleton<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US>Intel Open Source Technology Centre<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-US><o:p> </o:p></span></p></div></body></html>