G.1.3 External Packages
The following external packages are required:
     
- BLAS
- Basic Linear Algebra Subroutine library
(http://www.netlib.org/blas).  Accelerated BLAS libraries such as
ATLAS (http://math-atlas.sourceforge.net) are recommeded for
better performance. 
 
- LAPACK
- Linear Algebra Package (http://www.netlib.org/lapack). 
 
- PCRE
- The Perl Compatible Regular Expression library (http://www.pcre.org). 
The following external package is optional but strongly recommended:
     
- GNU Readline
- Command-line editing library (www.gnu.org/s/readline). 
If you wish to build Octave without GNU readline installed, you must use
the --disable-readline option when running the configure script.
   
The following external software packages are optional but recommended:
     
- ARPACK
- Library for the solution of large-scale eigenvalue problems
(http://forge.scilab.org/index.php/p/arpack-ng).  ARPACK is
required to provide the functions eigsandsvds.
 
- cURL
- Library for transferring data with URL syntax
(http://curl.haxx.se).  cURL is required to provide the
urlreadandurlwritefunctions and theftpclass.
 
- FFTW3
- Library for computing discrete Fourier transforms
(http://www.fftw.org).  FFTW3 is used to provide better
performance for functions that compute discrete Fourier transforms
(fft,ifft,fft2, etc.)
 
- FLTK
- Portable GUI toolkit (http://www.fltk.org).  FLTK is currently
used to provide windows for Octave's OpenGL-based graphics functions.
     
 
- fontconfig
- Library for configuring and customizing font access
(http://www.freedesktop.org/wiki/Software/fontconfig).  Fontconfig
is used to manage fonts for Octave's OpenGL-based graphics functions.
     
 
- FreeType
- Portable font engine (http://www.freetype.org).  FreeType is used
to perform font rendering for Octave's OpenGL-based graphics functions.
     
 
- GLPK
- GNU Linear Programming Kit (http://www.gnu.org/software/glpk). 
GPLK is required for the function glpk.
 
- gnuplot
- Interactive graphics program (http://www.gnuplot.info).  gnuplot
is currently the default graphics renderer for Octave.
     
 
- GraphicsMagick++
- Image processing library (http://www.graphicsmagick.org). 
GraphicsMagick++ is used to provide the imreadandimwritefunctions.
 
- HDF5
- Library for manipulating portable data files
(http://www.hdfgroup.org/HDF5).  HDF5 is required for Octave's
loadandsavecommands to read and write HDF data files.
 
- OpenGL
- API for portable 2D and 3D graphics (http://www.opengl.org).  An
OpenGL implementation is required to provide Octave's OpenGL-based
graphics functions.  Octave's OpenGL-based graphics functions usually
outperform the gnuplot-based graphics functions because plot data can be
rendered directly instead of sending data and commands to gnuplot for
interpretation and rendering.
     
 
- Qhull
- Computational geometry library (http://www.qhull.org).  Qhull is
required to provide the functions convhull,convhulln,delaunay,delaunay3,delaunayn,voronoi, andvoronoin.
 
- QRUPDATE
- QR factorization updating library
(http://sourceforge.net/projects/qrupdate).  QRUPDATE is used to
provide improved performance for the functions qrdelete,qrinsert,qrshift, andqrupdate.
 
- SuiteSparse
- Sparse matrix factorization library
(http://www.cise.ufl.edu/research/sparse/SuiteSparse). 
SuiteSparse is required to provide sparse matrix factorizations and
solution of linear equations for sparse systems.
     
 
- zlib
- Data compression library (http://zlib.net).  The zlib library is
required for Octave's loadandsavecommands to handle
compressed data, including Matlab v5 MAT files.