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RE: [cdt-dev] CDT does not perform will with "large" projects

Please see my comments below.

> -----Original Message-----
> From: cdt-dev-bounces@xxxxxxxxxxx 
> [mailto:cdt-dev-bounces@xxxxxxxxxxx] On Behalf Of Jesper Eskilson
> Sent: Monday, February 16, 2009 2:24 PM
> To: CDT General developers list.
> Subject: [cdt-dev] CDT does not perform will with "large" projects
> Hi,
> I'm trying to use CDT to do C++-development on a fairly large code
> base (several thousand source files) which has a CMake-based build
> system. I'm using the CDT4 CMake generator to generate a (single,
> large) CDT project which I can import into Eclipse.  Unfortunately,
> after spending several hours trying to get things to work smoothly, I
> think I finally have to give up and resort back to Emacs, at least for
> the time being.
> First, something I've wished for a long time: CDT should have a way of
> guiding users to get their indexing working correctly. If the indexer
> isn't working now, it is not at all obvious what is wrong or how to
> fix it. A tutorial or step-by-step guide readily accessible from
> inside CDT would be a great help. When I hear people whine about
> Visual Studio, it is almost always about IntelliSense not working
> properly. Not having a working autocompleter kills the entire idea of
> using CDT.
> Some of my observations/questions:
> * The CMake generator did not properly set up the set of include
>   paths. None of the GCC system include paths were added. After
>   manually adding them, I had to rebuild the entire index. Just
>   updating the index did not help.

CMake is not part of CDT. Please get in touch with the CMake maintainer.

> * When my CMake-project is open, Eclipse is regularly totally
>   unresponsive for several seconds up to sometimes several minutes,
>   with no visible cue as to what it is doing.

In case of unresponsiveness or CPU hogging, please provide a JVM thread

> * The indexer takes a very long time to run and is very
>   memory-hungry. IMHO, if CDT is to be a competitive alternative to
>   Visual Studio, the indexer performance must improve.

See above.

> * Eclipse consumes > 100% CPU when I have my CMake-project open. No
>   background jobs are being run, the indexer has completed, but still
>   the Eclipse process is hogging all the CPU. I'd love to produce a
>   bugreport, but I simply don't know what to put in it.

See above.

> * I tried importing the CMake-project inside a runtime Eclipse and
>   debug it. This did not work since the runtime Eclipse dies with a
>   OutOfMemory error while doing some decorator work.

You can try to increase the JVM heap size limit:

> * Should I just give up on having a single, large, Eclipse/CDT project
>   with all the files in it? How large projects should CDT be capable
>   of handling?

This depends on the heap size available to the JVM and the CPU power.
Note also that CDT 4 is already outdated. 

> -- 
> /Jesper
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> cdt-dev@xxxxxxxxxxx

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