Remove references to Lapack in doc and examples

Documentation/doc/Documentation/Installation.txt

@@ -509,15 +509,6 @@ and the \ref PkgRidges_3 packages.
 
 The \sc{Eigen} web site is <A HREF="http://eigen.tuxfamily.org">`http://eigen.tuxfamily.org`</A>.
 
-\subsection thirdpartyLapack Lapack
-
-\sc{Lapack} is a `Fortran` library for linear algebra.
-
-In \cgal, \sc{Lapack} is an alternative to \sc{Eigen} for singular value decomposition for the \ref
-PkgJet_fitting_3 and the \ref PkgRidges_3 packages.
-
-The \sc{Lapack} web site is <A HREF="http://www.netlib.org/lapack/">`http://www.netlib.org/lapack/`</A>.
-
 \subsection thirdpartylibQGLViewer libQGLViewer 
 
 libQGLViewer is a 3D widget based on \sc{Qt} 4's `QGLWidget`. In case of \sc{Qt}5 used, libQGLViewer needs to be recompiled with the proper \sc{Qt}5 version.

Solver_interface/doc/Solver_interface/Concepts/SvdTraits.h

@@ -6,7 +6,6 @@
   to solve in the least square sense a linear system with a singular value decomposition
 
   \cgalHasModel `CGAL::Eigen_svd`
-  \cgalHasModel `CGAL::Lapack_svd`
 
 */
 class SvdTraits {

Solver_interface/doc/Solver_interface/PackageDescription.txt

@@ -41,7 +41,6 @@
 - `CGAL::Eigen_sparse_matrix`
 - `CGAL::Eigen_sparse_symmetric_matrix`
 - `CGAL::Internal_diagonalize_traits`
-- `CGAL::Lapack_svd`
 
 */
 

Solver_interface/doc/Solver_interface/Solver_interface.txt

@@ -49,10 +49,8 @@ class:
 
 The concept `SvdTraits` defines an interface for solving in the least
 square sense a linear system with a singular value decomposition. The
-field type is `double`. We provide two models for this concept:
+field type is `double`. We provide the model `Eigen_svd` that uses the
-
+\ref thirdpartyEigen library.
-- `Eigen_svd` uses the \ref thirdpartyEigen library.
-- `Lapack_svd` uses the \ref thirdpartyLapack library.
 
 Here is a simple example that shows how to handle matrices, vectors
 and this solver:

Solver_interface/examples/Solver_interface/CMakeLists.txt

@@ -16,22 +16,12 @@ if ( CGAL_FOUND )
 
   include_directories (BEFORE "../include")
   
-  # Use Eigen or BLAS and LAPACK (optional)
+  # Use Eigen
   find_package(Eigen3 3.1.0) #(requires 3.1.0 or greater)
-  if (NOT EIGEN3_FOUND)
+
-    find_package(LAPACK)
+  if (EIGEN3_FOUND)
-    if(LAPACK_FOUND)
-      include( ${LAPACK_USE_FILE} )
-    endif(LAPACK_FOUND)
-  else()
     include( ${EIGEN3_USE_FILE} )
-  endif()
-
-  if(EIGEN3_FOUND OR LAPACK_FOUND)
     create_single_source_cgal_program( "singular_value_decomposition.cpp" )
-  endif()
-
-  if(EIGEN3_FOUND)
     create_single_source_cgal_program( "sparse_solvers.cpp" )
   endif()
 

Solver_interface/examples/Solver_interface/singular_value_decomposition.cpp

@@ -1,15 +1,8 @@
-// If Eigen is available, use it, otherwise switch to Lapack
 #ifdef CGAL_EIGEN3_ENABLED
 #include <CGAL/Eigen_matrix.h>
 #include <CGAL/Eigen_vector.h>
 #include <CGAL/Eigen_svd.h>
 typedef CGAL::Eigen_svd Svd;
-
-#else
-#ifdef CGAL_LAPACK_ENABLED
-#include <CGAL/Lapack_svd.h>
-typedef CGAL::Lapack_svd Svd;
-#endif
 #endif
 
 typedef Svd::FT     FT;