[Vxl-users] Compiling a simple VNL program

[James K. <jk...@jh...>]

I'm a VXL/VNL newbie and am having some difficulty getting VNL to work. 
      I wrote a simple code that creates a matrix and takes its inverse. 
  The compiler can't find the v3p_netlib_initialize and 
v3p_netlib_dsvdc_ functions.  I believe VXL automatically installs 
netlib - please correct me if I am wrong.

The source code, CMakeLists.txt, and the compile errors are below.

I'm sure this is something simple and dumb.  Any help would be greatly 
appreciated.

Thanks,

James Kinsey



=====Source Code============

#include <vnl/vnl_vector.h>
#include <vnl/vnl_matrix.h>
#include <vcl_iostream.h>
#include <vnl/algo/vnl_matrix_inverse.h>
#include <vnl/vnl_math.h>

int main()
{

   vnl_matrix<double> A(3,3);
   A(0,0) = 1.0;
   A(0,1) = 0.3;
   A(0,2) = -0.7;
   A(1,0) = 1.0;
   A(1,1) = 1.3;
   A(1,2) = -6.7;
   A(2,0) = -2.0;
   A(2,1) = 9.3;
   A(2,2) = -2.7;
   vcl_cerr << A << "\n";
   vcl_cerr << vnl_matrix_inverse<double>(A) << "\n";

   return 0;
}

======= CMAkeLists.txt =================

# vxl/vnl/examples/CMakeLists.txt

PROJECT( vnlbasics )

INCLUDE_DIRECTORIES(
/home/jkinsey/code/vxl/vxl_source/vcl
/home/jkinsey/code/vxl/vxl_source/core
/home/jkinsey/code/vxl/vxl_source/v3p
/home/jkinsey/code/vxl/bin/vcl
/home/jkinsey/code/vxl/bin/core
/home/jkinsey/code/vxl/bin/v3p)

LINK_DIRECTORIES( /home/jkinsey/code/vxl/bin/lib)

ADD_EXECUTABLE(vnlbasics main.cpp)

TARGET_LINK_LIBRARIES( vnlbasics vcl vnl_algo vnl vul )


============ Compile Errors ===================

[jkinsey:bin/]$ make
Scanning dependencies of target vnlbasics
[100%] Building CXX object CMakeFiles/vnlbasics.dir/main.o
Linking CXX executable vnlbasics
/home/jkinsey/code/vxl/bin/lib/libvnl_algo.a(vnl_svd+double-.o)(.gnu.linkonce.t._ZN22v3p_netlib_initializerC1Ev+0x7): 
In function `v3p_netlib_initializer::v3p_netlib_initializer()':
: undefined reference to `v3p_netlib_initialize'
/home/jkinsey/code/vxl/bin/lib/libvnl_algo.a(vnl_svd+double-.o)(.gnu.linkonce.t._Z16vnl_linpack_svdcPdPKlS1_S1_S_S_S_S1_S_S1_S_S1_Pl+0x31): 
In function `vnl_linpack_svdc(double*, long const*, long const*, long 
const*, double*, double*, double*, long const*, double*, long const*, 
double*, long const*, long*)':
: undefined reference to `v3p_netlib_dsvdc_'
collect2: ld returned 1 exit status
make[2]: *** [vnlbasics] Error 1
make[1]: *** [CMakeFiles/vnlbasics.dir/all] Error 2
make: *** [all] Error 2

==========================================


-- 
James C. Kinsey, Ph.D.
Postdoctoral Fellow
Dynamical Systems and Controls Lab
Department of Mechanical Engineering
The Johns Hopkins University