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

[Bill Lorensen]

Luis,

Now I recall I had a similar experience with TRY_COMPILE on windows a while
back.

Thanks,

Bill

On 8/28/07, Luis Ibanez <luis.ibanez at kitware.com> wrote:
>
>
> 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
> >      >
> >
> >
>
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