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Avoid to re-build projects which are referenced [message #1718822]

Wed, 30 December 2015 13:10

Eclipse User

Hi,

I am building a plugin for an external project, and to be able to inspect the source code of this third party I've added it as a project reference. That works fine, though when building the plugin it invokes `make' for the referenced project as well. While this causes no harm, as there is nothing to update, is there a way to disable this behaviour and having it to compile only the current project?

Thanks

Re: Avoid to re-build projects which are referenced [message #1718828 is a reply to message #1718822]

Wed, 30 December 2015 15:16

Eclipse User

The simple answer is don't link them. Are they linked for a reason?
If you were to build a makefile yourself, you would have to run make in all the referenced project yourself (read about recursive makes) just as Eclipse does. Eclipse depends on the way make is supposed to work. How should Eclipse determine if a build is needed until it runs make? Are you suggesting that Eclipse should duplicate what make does in whole or in part (and incur all the problems associated with adding bells and whistles) merely to avoid unnecessarily running it?

As you've said, it does no harm. The first rule in engineering (and programming is a type of engineering) is: if it ain't broke; don't fix it.

[Updated on: Wed, 30 December 2015 15:22] by Moderator

Re: Avoid to re-build projects which are referenced [message #1718868 is a reply to message #1718828]

Thu, 31 December 2015 07:29

Eclipse User

Hi David, thanks for your answer. I linked the projects because I noticed that with this trick intellisense is able to jump in the definition of a utilised function of the referenced project, otherwise it will only show the declaration in the header. Leaving apart any (good) debate that the header/interface is not documented as it should, reading the definition is the only way to understand the behaviour of the function itself. Whereas running make in the referenced projects without necessity may be just time consuming, even if it does not have to re-build anything, because of the size of the projects (in my case they are LLVM/Clang).

My point is, I assume that the external/referenced projects are libraries and are already built, and there is no necessity to execute `make' on them. I am going to try creating a new build configuration for the external projects, where the build command is a nop. Nevertheless I was looking for a cleaner solution.

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