[ITK] compiling itk on freebsd, how to flag out ldl?

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

Hello Longzu,

You are using freebsd, that is new and exciting. I have not used that OS for developing.

There are two things in the ITK/SimpleITK build that are related to this.

First, there is an option in ITK ( which I have not used ) call ITK_DYNAMIC_LOADING. If you pass -DITK_DYNAMIC_LOADING:BOOL=0 to cmake for the Superbuild, it should propagate to the ITK project and this feature will be remove. This may solve your problem.

The second is CMake variable CMAKE_DL_LIBS. I believe it is the dl library that is causing the problem [1]. Setting it to an empty string may also remove it from the linking lines. Getting that to propagate to the ITK project will not happen automatically and would need to be done manually in the ITK build.

HTH,
Brad

[1] https://github.com/InsightSoftwareConsortium/ITK/blob/master/Modules/Core/Common/src/CMakeLists.txt#L142

________________________________________
From: Longzhu Shen [lqshen10 at gmail.com]
Sent: Tuesday, February 14, 2017 9:11 AM
To: community at itk.org
Subject: [ITK] compiling itk on freebsd, how to flag out ldl?

Hello,

I'm trying to compile simpleitk on my freebsd system.
The issue I encountered is ldl is not found.
After some searching, I found libdl is not needed on freebsd. It is
included in libc. Wondering how I can turn it off in the make file.
I did not find  ldl in the Makefile under Simpleitk-build.

I followed the instrutions from the link below.

https://chsasank.github.io/sitk-docs/building/unix.html#obtaining-source-code

Thanks.

Longzhu


--
Longzhu Shen, Ph.D.
Postdoc Research Associate
School of Forestry and Environmental Studies
Yale University
195 Prospect Street
New Haven, CT 06511
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