[CMake] Build different targets depending on build configuration

[Mike Jackson]

You might be able to get away with something like:

OPTION(BUILD_TESTING "Build Unit Testing" ON)
IF(BUILD_TESTING)
   ENABLE_TESTING()
ADD_DEFINITIONS(-WINCLUDE_TEST_CODE)
ENDIF(BUILD_TESTING)

Then in ccmake/cmake-gui you can toggle the "ENABLE_TESTING" checkbox  
on and off. There may be some ramifications of this that I am not  
thinking of but _should_ work. You may want to add:

IF(NOT BUILD_TESTING)
   REMOVE_DEFINITIONS(-WINCLUDE_TEST_CODE)
ENDIF(NOT BUILD_TESTING)


There is also this type of code:
IF ( CMAKE_BUILD_TYPE MATCHES Debug )
  ADD_DEFINITIONS(-Wall)
ENDIF ( CMAKE_BUILD_TYPE MATCHES Debug )

Either might get you where you want. There are only 4  
"Configurations" that CMake knows about (at least to my  
understanding, I may be wrong)
Debug, Release, ReleaseWithDebug and ReleaseMinSize or something  
along those lines. Probably the first option will get you what you want.

Also with CMake, the philosophy is to create a separate build  
directory for each configuration although this is not necessary. You  
can always rerun cmake and turn OFF the testing and recompile.


-- 
Mike Jackson   Senior Research Engineer
Innovative Management & Technology Services


On Aug 18, 2008, at 11:01 AM, Steven Dwyer wrote:

> I should clarify my original question,
>
> Our unit/functional tests appear in the same files as the source  
> they're exercising (we use ifdefs to control if they're compiled in  
> or not).
>
> I think you're suggesting that we add new targets for each existing  
> configuration (e.g. Debug outputs program.exe and program-test.exe)  
> whereas I'd rather use configurations (e.g. Debug outputs  
> program.exe and Test outputs program.exe)
>
> I think this is required because of the need to ifdef in/out the  
> test code.
>
> I did look through the links you suggested and will definitely  
> spend more time looking at them.
>
> Steven
>
> -----Original Message-----
> From: Mike Jackson [mailto:mike.jackson at imts.us]
> Sent: August 18, 2008 10:04 AM
> To: Steven Dwyer
> Cc: cmake at cmake.org
> Subject: Re: [CMake] Build different targets depending on build  
> configuration
>
>
>> 2.  If the Debug/Release configurations build an executable, the
>> test configuration should also build an executable and run it after
>> it is built.
>
> I use the Boost unit testing framework and what I do is add "testing"
> targets that build my unit tests (optionally) every time I compile.
> After the compile I run "make test" and all the units tests are
> executed.
>
>> 3.  If the Debug/Release configurations build a library, the test
>> configuration should build an executable and run it after it is  
>> built.
>
> Same idea as #2. There are some pointers in the CMake wiki about
> setting all this up but just keep asking questions here as you will
> find the cmake community very willing to help.
>
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