Using ITK with xcode

Question

I am working on an xcode project that requires me to use ITK (a c++ library), I have went through with the installation of ITK, by doing

ccmake InsightToolkit-4.13.1

and then configuring and generating the files, then runing

make make install

but I do not know how to import the library into the xcode project, where I get the following error every time I try building it:

'itkImage.h' image file not found

I would like to know how could I import it and share it with other people on different computers.

My advice is to use CMake to generate your project for your application. — drescherjm
– drescherjm, Commented Sep 9, 2018 at 18:50
But I already have a project and I would like to add this library to it — Fayad
– Fayad, Commented Sep 9, 2018 at 19:02
I understand that. It's just more difficult to do what you want to do. There is information in the itk wiki how to set this up. CMake generates code to setup the factories which you don't get when you don't use it. — drescherjm
– drescherjm, Commented Sep 9, 2018 at 19:11
Here is the info: itk.org/ITKExamples/src/IO/ImageBase/RegisterIOFactories/… — drescherjm
– drescherjm, Commented Sep 9, 2018 at 19:14
With that said your problem here is a lot more basic. You need to add the include folder for ITK to your compiler settings. Also you will have to add libraries to link to your linker settings. I can't tell you how to do that in xcode. — drescherjm
– drescherjm, Commented Sep 9, 2018 at 19:32

Christophe · Accepted Answer · 2018-09-09 20:36:35Z

The #include directive comes with two flavors:

With quotes (#include "file.h")
With ankle brackets (#include <file.h>)

The first usually refers to files relative to your project directory. The second is for system libraries.

You can influence the search path in the project setting:

double-click on the project in the project explorer
Click on Build settings
Click on your target
Click on All to view also hidden options
In the section Search Paths you can then update the header search path to include the absolute path of you rlibrary headers. Attention: you have to do this for the Debug and for the Release builds:

This will solve the error that you have reported.

Remark: be careful, because after this is solved, you could experience some other issues related to the good use of the library, as pointed out by drescherjm in the comments (link about registration of custom classes to the library's fatories if Cmake is not used to compile the project)

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