On 2012?04?20? 01:54, Andy Gikling wrote:
Jack,
I've been burned by this same type of issue several times during different
trial runs of the Yocto quick start and when running through the ADT Manual.
Here are a few things to try / things I've done wrong in the past / common
pitfalls:
1. Be very sure your tool chain is correct for your target. You need to know if you are
"cross compiling" or not! Look up what that means if you are unfamiliar. For example,
if you have 32Bit host and a 64bit target the pre-built toolchain you should download is
"poky-eglibc-i686-x86_64-toolchain-gmae-1.1.1.tar.bz2" - these premade toolchains can be
found at http://downloads.yoctoproject.org/releases/yocto/yocto-1.1.1/toolchain/
As another example, if you are trying to run the quick start with qemux86 as the target
emulator you should get "poky-eglibc-i686-i586-toolchain-gmae-1.1.1.tar.bz2"
from the above site. Or see the ADT Manual for details on other ways to get and
configure your build tools.
2. Once you get a toolchain, make sure it's contents end up in
/opt/poky/version/ folder where version is the Yocto version your using.
v1.1.1 is the latest and 1.2 is coming soon. It is important to know what
version of Yocto you are trying to use! (Obviously... but note in the steps
below that it's easy to get the wrong version of the Eclipse plugin for Yocto.)
3. When downloading the Eclipse Yocto plugin I have found it's easiest to simply
download the ...archive.zip version of the Yocto v1.1.1 plugin from this address:
http://downloads.yoctoproject.org/releases/yocto/yocto-1.1.1/eclipse-plugin/indigo/ -
then in Eclipse, when adding that plugin, don't enter a software site address, simply
click the "Archive" button (the dialog will look for a .zip file) then point at
the plugin's .zip file you download.
4. It's easy to miss the step in the ADT manual about how to configure the Yocto plugin once you've installed it. (Also
make sure you've correctly installed all the other add-on software described in the Eclipse setup procedure at the end of
the ADT manual. Note the WinCE software on that list doesn't seem to ever install correctly. I haven't needed it though
- should be able to skip it.) The ADT Manual tell you to go to Window->Preferences and you'll see the Yocto ADT
settings on the bottom of the column on the left. You should chose Standalone pre-built tollchain if you downloaded it
like I described above. "Toolchain Root Location" should be "/opt/poky/1.1.1" and "Sysroot
Location" should be "/opt/poky/1.1.1/targetSysrootFolder" where targetSysrootFolder will change depending
on what toolchain you've downloaded. This is supposed to be a folder that mimic's what's going to be available on the
target when the software you're developing is running there. It includes headers, libraries etc... Pointing at the right
sysroot location is very important. It will own you if you don't!
5. There's a nice 1 liner in the quick start manual after you've opened a new
hello world template that's easily missed! One you've open your Yocto hello world
template you need to run the autotools, but this is not supposed to be done from
the command line. If your Yocto ADT plugin is setup correctly, and you've
selected the new hello world project in Eclipse's Project Explorer, you will be
able to get to the menu option Project->Reconfigure Project. This runs the
autotools for you. In the console you should see that this completed
successfully. Once it's completed successfully, you should see a Makefile in
hello world's /src/ folder. It was not there before and was generated by calling
Reconfigure Project. Now you should be able to right click your project and build
it.
Hope this helps! Let us know.
~Andy Gikling
LasX Industries Inc.
Hi, Andy! Thank you very very much for your help. I have found where the
error is. Just as you describe in your 4th tip. My "Sysroot Location"
was uncorrect. After correcting the sysroot location and creating a new
"hello world" template project, it works. Besides, your 3rd tip is also
useful. When installing eclipse-plugin, I installing the Plug-in as New
Software and it took me much time to solve the problem:"
|http://downloads.yoctoproject.org/releases/eclipse-plugin/1.1.1|" not
exist. But your method is very easy, thx!
jack
_______________________________________________
yocto mailing list
[email protected]
https://lists.yoctoproject.org/listinfo/yocto
