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
