[CMake] Add configuration support to include_directories()

[Robert Dailey]

On Tue, Dec 23, 2008 at 11:10 AM, Michael Jackson <
mike.jackson at bluequartz.net> wrote:

> n Dec 23, 2008, at 11:56 AM, Bill Hoffman wrote:
>
>  Robert Dailey wrote:
>>
>>  For debug: C:\foo\bar-d
>>> For release: C:\foo\bar
>>> Note that the text "Debug" or "Release" is not used in the include path,
>>> so simply using CFG_INTDIR would not work I don't think (Unless I'm missing
>>> something again). This is why in CMake I need to do something like this:
>>> if( debug )
>>>   include_directories( C:\foo\bar-d )
>>> else()
>>>   include_directories( C:\foo\bar )
>>> endif()
>>> Thanks again to everyone for their continued help.
>>>
>>
>> OK, well, since VS supports multiple configurations at VS time, and not
>> CMake time, it is impossible to have the above if statement.   There is just
>> no way to know what configuration the user will pick.   The user gets to
>> pick a long time after that if statement was executed by CMake.  So, I think
>> you are sort of out of luck right now...   What CMake needs is per
>> configuration include_directories for this to work.   One thing that might
>> work as a work around, is that you could copy the header file via a custom
>> command into your build tree, and then use the CFG_INTDIR approach.
>>
>
> I am just thinking out loud here so if I am totally off the mark just
> ignore.
>
> So the problem is including /foo/bar-d or /foo/bar for debug and release.
>
> For a release build there is the -NDEBUG definition and for Debug there is
> the -DEBUG compiler definitions defined (or something that at effect)
>
> In your own project have a header file (MySetup.h) with something like:
>
> #ifdef NDEBUG
>  #include "bar/setup.h"
> #else
>  #include "bar-d/setup.h"
> #endif
>
> Then you need to just have C:\foo on the include path.
>
> I _think_ something like that might work. Not sure how scalable or
> maintainable that might be since I have never used wxWidgets.


This is a great idea but I can't do this, since I would have to edit
wxWidgets source files to make this work. For my own specific case I do not
want to edit third party libraries. However, again, this is a very valid
work around and would be usable in the typical case.
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