I'm new to C++ and CGAL, previously I worked mainly with C#.
I installed CGAL as described on https://www.cgal.org/download/windows.html and all steps finished successfully.
Then I looked to a CGAL 'Hello world' (https://doc.cgal.org/latest/Manual/Kernel_23_2points_and_segment_8cpp-example.html); here I had no problem also; all the code was compiled and run propertly.
But when I tried with more complex things I got a strange issue. For example I tried to compile Skeletonization (https://doc.cgal.org/latest/Surface_mesh_skeletonization/Surface_mesh_skeletonization_2simple_mcfskel_example_8cpp-example.html);
here I got a number of errors like these:
C2039 ''extract_mean_curvature_flow_skeleton'': is not a member of ''CGAL''
C2039 ''Matrix'': is not a member of ''CGAL::Default''
C2039 ''Vector'': is not a member of ''CGAL::Default''
As far as I understand it the #include lines processed without errors, all needed headers exist.
I tried to search the answer and found this: http://cgal-discuss.949826.n4.nabble.com/Problem-on-Surface-mesh-deformation-td4661042.html
Unfortunately I don't be sure my case is similar and I don't know what exactly do the line #define CGAL_EIGEN3_ENABLED as recommended there.
In any case I tried to add it and got the same errors as previous if this #define inserted after #include ; in different case arise a lot of errors like this:
LNK2019 unresolved external symbol __imp___gmpq_add referenced in function "class CGAL::Gmpq __cdecl CGAL::operator+(class CGAL::Gmpq const &,class CGAL::Gmpq const &)" (??HCGAL@@YA?AVGmpq@0@AEBV10@0@Z)
I work with VS 2017, in Additional library directories I added:
$(CGAL_DIR)/lib/Debug;$(CGAL_DIR)/lib
in Additional include directories:
$(CGAL_ROOT)\include;$(CGAL_ROOT)\auxiliary\gmp\include;
$(CGAL_DIR)\include;$(BOOST_INCLUDEDIR)
maybe some needed libraries or include directories are missing here?
All the components (CGAL, boost, QT) installed in 64 bits versions as well as test project.
UPD: The question is solved!
The answer was extremely simple (please note I'm new in C++):
1. I loaded and unzip EIGEN (it need not to install); for convenience I create also EIGEN_DIR variable;
2. I added to Additional Include Directories: $(EIGEN_DIR);
3. I added before #include statements #define CGAL_EIGEN3_ENABLED;
4. I added to Additional Dependencies such libs:
$(CGAL_ROOT)\auxiliary\gmp\lib\libmpfr-4.lib
$(CGAL_ROOT)\auxiliary\gmp\lib\libgmp-10.lib
and it start to work!