CEDET

On 03/06/2012 11:11 PM, shuyu_1982@... wrote:
> Hi all. Iam new to cedet.
>
> I am using emacs 23.4 under Windows XP SP3.
>
> I checkouted the devel-version CEDET from
> bzr://cedet.bzr.sourceforge.net/bzrroot/cedet/code/trunk.
>
> Compiled it.
>
> When I opened a C++ or C source file, I try to enable Semantic mode
> using “Tools->Source Code Parsers (Semantic)”,
>
> I get this message “Autoloading failed to define function semantic-mode”
> from emacs, and semantic doesn’t work.
>
> I tried to google the problem, cannot find any solution.
>
> Can anyone help me?
>
> Thanks a lot.

Hi,

The semantic in CEDET/trunk uses a different install method than the one 
in Emacs.  The Emacs menu item from "tools" should be avoided if you use 
trunk.  Instead see the INSTALL file for code to add to your .emacs file 
get Semantic started.

We will eventually switch to using the same function name and file name 
format as Emacs which will make using those menus work, but this has not 
yet happened.

Eric

I've got two pretty much identical installations. One runs on a laptop 
and the other with Virtualbox on a Windows XP machine. Both systems are 
Ubuntu 11.1 and both have Emacs 23.3.1 installed.

CEDET appears to have installed and runs on the VirtualBox machine and I 
can select the very useful Semantic mode. I've not got to grips with 
compiling Arduino code with the EDE yet.

On the laptop, I can't get Semantic mode and get the error “Autoloading 
failed to define function semantic-mode”. Also the tick boxes for 
Semantic and EDE don't 'take' a tick.

Is there a 'fix' for this please?

Jim

On 04/18/2012 03:48 PM, Jim Ford wrote:
> I've got two pretty much identical installations. One runs on a laptop
> and the other with Virtualbox on a Windows XP machine. Both systems are
> Ubuntu 11.1 and both have Emacs 23.3.1 installed.
>
> CEDET appears to have installed and runs on the VirtualBox machine and I
> can select the very useful Semantic mode. I've not got to grips with
> compiling Arduino code with the EDE yet.
>
> On the laptop, I can't get Semantic mode and get the error “Autoloading
> failed to define function semantic-mode”. Also the tick boxes for
> Semantic and EDE don't 'take' a tick.
>
> Is there a 'fix' for this please?

This may be a config problem.  When you used CEDET from sourceforge, 
it's configuration must be the first thing in your .emacs.  If any other 
code starts loading in CEDET from Emacs core, you will get a missmatch 
like this.

This error is from an autoload claiming to provide semantic-mode in some 
file, but it doesn't exist in CEDET from sourceforge, as that is a new 
Emacs only feature at the moment.  If you get CEDET setup first, then 
you can avoid other code trying to use semantic-mode.

Sometimes, this might be because of a default.el or other system wide 
config file.

Eric

On 04/20/2012 08:53 AM, Jim Ford wrote:
> On 19/04/2012 12:40, Eric M. Ludlam wrote:
>> On 04/18/2012 03:48 PM, Jim Ford wrote:
>>> I've got two pretty much identical installations. One runs on a laptop
>>> and the other with Virtualbox on a Windows XP machine. Both systems are
>>> Ubuntu 11.1 and both have Emacs 23.3.1 installed.
>>>
>>> CEDET appears to have installed and runs on the VirtualBox machine 
>>> and I
>>> can select the very useful Semantic mode. I've not got to grips with
>>> compiling Arduino code with the EDE yet.
>>>
>>> On the laptop, I can't get Semantic mode and get the error “Autoloading
>>> failed to define function semantic-mode”. Also the tick boxes for
>>> Semantic and EDE don't 'take' a tick.
>>>
>>> Is there a 'fix' for this please?
>>
>> This may be a config problem.  When you used CEDET from sourceforge, 
>> it's configuration must be the first thing in your .emacs.  If any 
>> other code starts loading in CEDET from Emacs core, you will get a 
>> missmatch like this.
>>
>> This error is from an autoload claiming to provide semantic-mode in 
>> some file, but it doesn't exist in CEDET from sourceforge, as that is 
>> a new Emacs only feature at the moment.  If you get CEDET setup 
>> first, then you can avoid other code trying to use semantic-mode.
>>
>> Sometimes, this might be because of a default.el or other system wide 
>> config file.
>>
>> Eric
>
> Thanks for the reply, Eric.
>
> I 'Cut the Gordian Knot' and installed a v24 snapshot, rather than try 
> to get 23.3.1 working on the laptop.
>
> It's a massive improvement for writing code and initially I was able 
> to compile and upload to an Arduino OK.
>
> Initially it worked fine, but although I now can still compile, I 
> can't get the Arduino stuff to work - I've lost the menu items for 
> uploading and showing a serial terminal. This appears to have happened 
> after an abortive attempt to get ecb-2.40 to work.

Hi Jim,

I had similar problems and was puzzled, but discovered that the 
arduino-mode had a bug in it that hung when examining include files that 
used ""... sometimes.  That prevented EDE from loading, and thus the 
project menu would get scuttled.

Just do a revert-buffer, or M-x c++-mode and it will fix it for the 
short term.  Not sure if this bug was fixed in arduino-mode yet though.

Eric