CGAL users discussion list

["Laurent Rineau (CGAL/GeometryFactory)" <>]

Le mardi 04 juin 2013 14:35:00 Cody Rose a écrit :
> Hello,
> 
> I'd like to compile CGAL into a static library for use in a dynamic 
> library we're distributing (we have a commercial license for this), but 
> I'm having some trouble getting it to link. I can generate the static 
> versions of the CGAL libraries fine (by unsetting BUILD_SHARED_LIBS in 
> Cmake). When I try to build a static library or an .exe using them, 
> everything is great, but when I try to build them into a .dll I get the 
> following link errors:

Hi,

Your compilation process tries to link two different versions of boost_thread 
into one binary:

> libboost_thread-vc100-mt-gd-1_47.lib(thread.obj) : error LNK2005: "void 
> __cdecl boost::detail::free_raw_heap_memory(void *)" 
> (?free_raw_heap_memory@detail@boost@@YAXPAX@Z) already defined in 
> boost_thread-vc100-mt-gd-1_47.lib(boost_thread-vc100-mt-gd-1_47.dll)

The error says that a part of of the static libboost_thread-vc100-mt-
gd-1_47.lib (the obj thread.obj) is scheduled to be linked, but the shared 
boost library boost_thread-vc100-mt-gd-1_47.lib is already linked.

I see that you have modified BUILD_SHARED_LIBS so that CGAL libraries are 
compiled to static libraries. By default, then, the static boost_thread is 
linked into CGAL.lib. I think you should reconfigure the CGAL libraries with 
CGAL_Boost_USE_STATIC_LIBS set to FALSE, so that your build process always 
use 
shared Boost libraries (if that is what you want).

Best regards,

-- 
Laurent Rineau, PhD
R&D Engineer at GeometryFactory           http://www.geometryfactory.com/
Release Manager of the CGAL Project       http://www.cgal.org/