[ITK-dev] BUILD_SHARED_LIBS vs ITK_BUILD_SHARED

[Lowekamp, Bradley (NIH/NLM/LHC) [C]]

Looks like a bug to me. This is relatively new code too [1].

You proposal sounds good to me too.

Brad

[1] https://github.com/InsightSoftwareConsortium/ITK/commit/1000370eec20511850c543cb3c02aa5118563ccc



On Oct 16, 2016, at 9:49 PM, Francois Budin <francois.budin at kitware.com<mailto:francois.budin at kitware.com>> wrote:

Hello fellow ITK developers,

I was having linking errors on Windows when compiling a project that was using the CMake variable BUILD_SHARED_LIBS and setting it to ON when I had compiled ITK with BUILD_SHARED_LIBS to OFF.
I realized that when ITK gets included and used and when the project using ITK using the IO factory mechanism, UseITK.cmake uses the variable BUILD_SHARED_LIBS to set some parameters. I was wondering if instead of using BUILD_SHARED_LIBS which could have a different value in ITK and the project I am trying to compile, UseITK.cmake should not use ITK_BUILD_SHARED instead (which is set when ITK is configured). If I modify UseITK.cmake to use ITK_BUILD_SHARED instead of BUILD_SHARED_LIBS, the linking error I was having disappears. Is this a bug or is there a reason behind that design?

Thanks,
Francois

[1] https://github.com/InsightSoftwareConsortium/ITK/blob/master/CMake/UseITK.cmake#L201
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