how to compile and link embedded template class with g++

[robin]

thanks, Guntaka!

Nurbs++ project put the all template implementation in the header files,
like as vector.h, barray.h ...

discourage me, that I include the header file and explicitly indicating
the libs, error always is here !!!

				Robin

On Thu, 2005-05-19 at 14:22 -0700, Vidyasagara Guntaka wrote:
> Robin,
> 
> This might help you:
> 
> Try including the corresponding Template Implementation file instead of
> the declaration file.  For Example:
> Consider the case where one declares MyTemplateClass in
> MyTemplateClass.h and the definition is put in MyTemplateClass.cpp.  Now
> if you want to use the MyTemplateClass, you have to include
> MyTemplateClass.cpp NOT MyTemplateClass.h.  You have to do this for all
> the template based classes.  Otherwise there will be undefined symbols.
> 
> Regards,
> Sagar.
> On Fri, 2005-05-20 at 04:42 +0800, robin wrote:
> > Hi, all:
> > 
> > I arm using the libnurbs library in my project,
> > the libnurbs is a Nurbs spline project,
> > http://libnurbs.sourceforge.net
> > this project widely use the emdded template class as data type.
> > 
> > I just want to test the libnurbs with my below code:
> > 
> > --------------
> > /*
> >  * file mynurbs.cpp
> >  */
> > 
> > #include <nurbs++/nurbs.h>
> > 
> > // testing of interpolation and approximation
> > 
> > using namespace PLib;
> > 
> > int main(void)
> > {
> >         int i;
> > 
> >         int deg = 3;
> >         Vector_HPoint3Df P(10); // this is linking error sentenc
> > 
> >         printf("Test nurbs++ !\n");
> >         return 0;
> > }
> > 
> > ----------------------
> > 
> > and compile the code with below command:
> > 
> > $ g++ -o mycurve mycurve.cpp
> > 
> > but some error was prompted to me:
> > 
> > -------------------------
> > 
> > /tmp/ccWEpvZI.o(.gnu.linkonce.t._ZN4PLib6VectorINS_9HPoint_nDIfLi3EEEED1Ev+0x16): In function `PLib::Vector<PLib::HPoint_nD<float, (int)3> >::~Vector [in-charge]()':
> > : undefined reference to `PLib::BasicArray<PLib::HPoint_nD<float,
> > (int)3> >::~BasicArray [not-in-charge]()'
> > /tmp/ccWEpvZI.o(.gnu.linkonce.r._ZTVN4PLib6VectorINS_9HPoint_nDIfLi3EEEEE+0x10): undefined reference to `PLib::BasicArray<PLib::HPoint_nD<float, (int)3> >::reset(PLib::HPoint_nD<float, (int)3>)'
> > /tmp/ccWEpvZI.o(.gnu.linkonce.t._ZN4PLib6VectorINS_9HPoint_nDIfLi3EEEEC1Ei+0x14): In function `PLib::Vector<PLib::HPoint_nD<float, (int)3> >::Vector[in-charge](int)':
> > : undefined reference to `PLib::BasicArray<PLib::HPoint_nD<float,
> > (int)3> >::BasicArray[not-in-charge](int)'
> > /tmp/ccWEpvZI.o(.gnu.linkonce.t._ZN4PLib6VectorINS_9HPoint_nDIfLi3EEEED0Ev+0x16): In function `PLib::Vector<PLib::HPoint_nD<float, (int)3> >::~Vector [in-charge deleting]()':
> > : undefined reference to `PLib::BasicArray<PLib::HPoint_nD<float,
> > (int)3> >::~BasicArray [not-in-charge]()'
> > collect2: ld returned 1 exit status
> > 
> > --------------
> > 
> > why? what should I do that in order to compiling and linking the
> > templated classes with g++?
> > 
> > 
> > 			thanks in advanced
> > 				Robin
> > 
> > 
>