[CMake] Add configuration support to include_directories()

[Bill Lorensen]

I'm not sure if this will be useful, but there is info on the
wxwidgets wiki regarding the use of cmake

http://wiki.wxwidgets.org/CMake

Bill

On Tue, Dec 23, 2008 at 1:05 PM, Robert Dailey <rcdailey at gmail.com> wrote:
> 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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