[Insight-developers] Re: Problems with Obj C Tests on VS6 / VS7 / VS8

[Luis Ibanez]

Bill, Mathieu, Sean


I looked at this problem. It actually happens in all
versions of Visual Studio, including VS8.

The TRY_COMPILE happily answers "TRUE" on Visual Studio,
despite the fact that there is no Objective-C compiler
available for Visual Studio.

I surrounded the TRY_COMPILE with a IF/ENDIF(WIN32),
and to avoid confusion replaced the variable


          CMAKE_OBJCXX_COMPILER

with

          CMAKE_OBJCXX_COMPILER_WORKS


to be consistent with the try compiles that CMake/Modules has
for the Fortran and Java compiler. The ides is to differentiate
between the boolean variable that indicates whether the compiler
works or not, and the string variable that contains the actual
path to the compiler.


Sean, Mathieu:

You may want to verify if the TRY_COMPILE is actually compiling
by purposely (and locally) introducing a syntax error in the .mm file.
I'm under the impression that this is simply answering TRUE always...



    Luis



--------------------
Bill Lorensen wrote:
> Mathieu,
>  
> I think non-VS builds are fine. It is just that one VS system. Maybe 
> Luis or one of the owners of the offending system can track down the 
> problem.
>  
> Bill
> 
>  
> On 8/27/07, *Mathieu Coursolle* <mcoursolle at rogue-research.com 
> <mailto:mcoursolle at rogue-research.com>> wrote:
> 
>     Humm,
> 
>     I've test it on MAC OSX, and it found an ObjC++ compiler, ran all the
>     tests and passed.
> 
>     Then I tried it on windows with cygwin (no objective-C compiler), none
>     of the tests were added,
>     so it succeeded.
> 
>     There is a TRY_COMPILE directive for ITK_OBJCXX_COMPILER in the
>     CMakeLists.txt file. The Objective-C++
>     header tests should be added only if ITK_OBJCXX_COMPILER is defined by
>     TRY_COMPILE.
> 
>     Does VS has an ObjC++ compiler?
> 
>     I am looking at today's dashboard and it seems that dash13 compiled the
>     ObjC++ code, but couldn't link,
>     while dash11 and peuplier.-jouy.-inra.-fr succeeded, but the tests were
>     added but not ran?
> 
>     Am I right to say that it worked all right on all non-VS builds?
> 
>     Thansk.
> 
>     Mathieu
> 
>      >Mathieu,
>      >
>      >I'm not sure what is going on with Win32-vs6, but it is trying to
>     build
>      >the objective c code:
>      >http://www.itk.org/Testing/Sites/dash13.kitware/Win32-vs60/20070827-0100-
>     <http://www.itk.org/Testing/Sites/dash13.kitware/Win32-vs60/20070827-0100->
>      >Nightly/BuildError.html
>      >
>      >I don't have access to a VS6 compiler anymore. Perhaps Luis can
>     take a look?
>      >
>      >Bill
>      >
> 
>