CGAL users discussion list

[Andreas Fabri <>]

On 26/04/2010 21:25, Ianic wrote:
> Hi there,
>
> First of all, thank you for creating such a great tool as the CGAL library!
> I plan to use its 3D meshing capabilities. I've just installed it on my
> Linux virtual machine, following the installation manual. The examples
> compiled nicely and work properly (at least the ones from 3D meshing
> folder). Now I want to try and compile my own code that uses CGAL functions.
>
> First thing that I did is that I created a new folder, say "applications",
> copied there a cpp file of one example from the 3D meshing folder (the one
> that meshes a liver image). Then I copied there a cgal_create_cmake_script
> file and ran it to create a CMakeLists.txt. Then I ran the cmake-gui from
> this folder, pressed Configure and then Generate. Then I typed "make" in the
> terminal. Compilation part worked but linker threw an error at me:
>
> CMakeFiles/mesh_3D_image.dir/mesh_3D_image.o: In function `main':
> mesh_3D_image.cpp:(.text+0x1f6e): undefined reference to `_readImage(char
> const*)'
> mesh_3D_image.cpp:(.text+0x1f80): undefined reference to
> `CGAL::Image_3::private_read(point_image*)'
> collect2: ld returned 1 exit status
> make[2]: *** [mesh_3D_image] Error 1
> make[1]: *** [CMakeFiles/mesh_3D_image.dir/all] Error 2
> make: *** [all] Error 2
>
> So therefore my question is what is it that I made wrong? Or maybe I made it
> all wrong and this is not the way to compile CGAL programs? Thank you for
> your help in advence!
>
> Sincerely,
> Yan


Did you build the library CGAL_ImageIO when you built the CGAL libs?
Or you built it, but don't link it?

andreas