[ITK] Multiple ITK-builds and CMake

[Eriksson, Mikael]

Hi Matt and community,

- Got it!
- That is the problem here, the CMake-gui for this application has no ITK_DIR entry so that I can explicitly specify which one to use. Any suggestions for how to get around this?

Best,
Mikael

………………………………………………………………………………………….
Mikael Eriksson
R&D Physicist Trainee
Philips Medical Systems MR Finland, Feasibility studies

+358 40 631 8500
mikael.k.eriksson at philips.com
………………………………………………………………………………………….

-----Original Message-----
From: Matt McCormick [mailto:matt.mccormick at kitware.com]
Sent: 12. syyskuuta 2014 16:55
To: Eriksson, Mikael
Cc: community at itk.org
Subject: Re: [ITK] Multiple ITK-builds and CMake

Hi Mikael,

A few pointers:

- Only a single source per project directory is needed.
- Set ITK_DIR in the cmake-gui explicitly for each configuration -- don't try to use environmental variables, etc.

More details on how find_package works can be found here [1] and here [2].

Hope this helps,
Matt

[1] http://www.cmake.org/cmake/help/v3.0/command/find_package.html#command:find_package

[2] http://www.cmake.org/cmake/help/v3.0/manual/cmake-packages.7.html

On Fri, Sep 12, 2014 at 8:48 AM, Eriksson, Mikael <mikael.k.eriksson at philips.com> wrote:
> Hello,
>
>
>
> I’m experiencing some problems trying to build BRAINSTools
> (https://github.com/BRAINSia/BRAINSTools), from where I wanted to run
> the registration algorithms implemented in the 3DSlicer gui from the
> command line. The initial situation was: I had ITK (4.5) and VTK built
> from downloaded files in debug mode on my computer. I managed to build
> the modules that I wanted from BRAINSTools (BRAINSFit and
> BRAINSDemonWarp and their dependencies) in debug mode. Everything was
> fine until I tried running a registration – I hadn’t realized until
> then that debug mode would make the registrations run really slowly.
>
>
>
> So, since I now have git on my computer, I cloned fresh versions of
> ITK and VTK to new source folders at the same levels as the old source
> folders, and built one debug version and one release version for both
> ITK and VTK, into separate folders. So my directory structure looked like this.
>
>
>
> C:/          -              ITK/        -              srcOld (ITK 4.5, from
> files)
>
>                                                                 binOld
> (debug)
>
> srcNewDebug (ITK 4.7, from source)
>
> srcNewRelease (ITK 4.7, from source)
>
> binNewDebug
>
> binNewRelease
>
>
>
> C:/          -              VTK/      -              corresponding…
>
>
>
> I probably have an unnecessary amount of builds and folders, but I was
> afraid to ruin any previous work.
>
>
>
> Now I tried to build BRAINSTools again with CMake. The problem here is
> that there is no option to specify ITK_DIR in the CMakeGUI, as there
> is in other programs. So I’m not sure how CMake finds and chooses an
> ITK-build, but I think it fails, because when compiling the
> BRAINSTools solution in Visual Studio 2010 as usual, using release
> mode this time, I got linking errors saying that some ITK-libraries couldn’t be found:
>
>
>
> error LNK1181: cannot open input file '..\..\lib\Release\ITKCommon-4.7.lib'
>
>
>
> I changed my environment variables ITK_DIR to C:/ITK/binNewRelease and
> changed the old ITK and VTK entries in the PATH variables to the new
> ones (changed C:\ITK\binOld\bin\debug to
> C:\ITK\binNewRelease\bin\Release and same for VTK). The same problem
> persisted however. Can anybody, give any suggestions for how to solve
> this particular problem? Also, I would be very happy for an
> explanation or a good link for how CMake and ITK interconnect, and
> especially, how CMake chooses an ITK build. I looked at the
> findITK.CMake files, and the ITKConfig.cmake and useITK.cmake files
> and read the documentation for the find_package function, but it’s still not clear to me how it works.
>
>
>
> Best regards,
>
> Mikael
>
>
>
> ………………………………………………………………………………………….
>
> Mikael Eriksson
>
> R&D Physicist Trainee
>
> Philips Medical Systems MR Finland, Feasibility studies
>
> mikael.k.eriksson at philips.com
>
> ………………………………………………………………………………………….
>
>
>
>
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