yocto populate_sdk有很多警告：软件包无法安装

Question

我正在使用yocto 2.6（thud）来自定义我的linux映像，现在我可以使用bitbake用自己的应用程序生成映像，该映像在板上可以很好地运行。

现在我正在尝试填充sdk，我这样做：

a =
    1.0000    4.2000
    2.0000    3.9000
    3.0000    3.7000
    4.0000    3.9000
    5.0000    4.1000
    6.0000    4.3000
    7.0000    4.2000
    8.0000    4.1000
    9.0000    4.4000
   10.0000    4.5000
   11.0000    5.1000
   12.0000    5.2000
   13.0000    5.8000

result =
  -0.30000
   0.00000
   0.00000
   0.30000
   0.00000
   0.00000
   0.30000
   0.00000
   0.00000
   1.30000

result =
  -0.30000
   0.30000
   0.30000
   1.30000

然后我有很多警告，例如

bitbake dey-image -c populate_sdk

看来The following packages have unmet dependencies: apt-dev : Depends: apt (= 1.2.24-r0.1) but it is not going to be installed Recommends: bash-dev Recommends: libcurl-dev but it is not installable hwmoniter-dev : Depends: hwmoniter (= git-r0.7) but it is not going to be installed Recommends: libmosquitto1-dev but it is not installable E: Unable to correct problems, you have held broken packages. Summary: There was 1 WARNING message shown. 终于成功发出警告，生成了sdk（* .sh），可以安装它，但是我找不到我认为在那里的许多头文件。

那么警告是什么意思？ “ 将不会安装”和“ 无法安装”有什么区别？我该如何解决这些警告？

谢谢