[CMake] Multiple versions of ITK in one build?

[Bill Lorensen]

I just re-read your question. Superbuild won't help.



On Tue, May 28, 2013 at 11:29 AM, Bill Lorensen <bill.lorensen at gmail.com>wrote:

> You could use cmake's superbuild facility to build both itk3 and itk4 in a
> superbuild tree.
>
>
>
> On Tue, May 28, 2013 at 11:02 AM, John Drescher <drescherjm at gmail.com>wrote:
>
>> On Tue, May 28, 2013 at 10:16 AM, Zamir Khan <zamir.khan at gmail.com>
>> wrote:
>> > We have a project where multiple modules rely on ITK. Most modules have
>> been
>> > upgraded to ITK 4.31, but one still relies on ITK 3.20 and it would
>> take a
>> > significant effort to upgrade it. In the meantime, is there a way for
>> us to
>> > keep these modules under a single top-level CMake and have them use
>> their
>> > respective versions of ITK?
>> >
>> > We thought we could just try to overwrite the ITK_DIR variable in the
>> > appropriate place, but our first naive implementation of this did not
>> work.
>> >
>> > Just wondering if someone has done this and whether it is possible
>> (before
>> > we dive deeper).
>> >
>>
>> On windows I have several completely separate build trees with their
>> own environment. This way I can build for different compiler versions,
>> 32/64 bit and different versions of libraries like this. Inside the
>> root of each build tree there is a link to the appropriate Visual
>> Studio command prompt that has its default folder set to the build
>> tree root. Also in the root there is a batch file that sets quite a
>> few _DIR environment variables to help cmake find the correct compiled
>> libraries. This has worked well for the 5 or so years that I have done
>> it this way. I do not use INSTALL targets so none of the binaries end
>> up in Program Files.
>>
>> John
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>
>
>
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