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kpeter (Peter Kovacs)
Support real types + numerical stability fix in NS (#254) - Real types are supported by appropriate inicialization. - A feature of the XTI spanning tree structure is removed to ensure numerical stability (could cause problems using integer types). The node potentials are updated always on the lower subtree, in order to prevent overflow problems. The former method isn't notably faster during to our tests.
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Installation Instructions

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



Since you are reading this I assume you already obtained one of the release

tarballs and successfully extracted it. The latest version of LEMON is

available at our web page (http://lemon.cs.elte.hu/).



In order to install LEMON from the extracted source tarball you have to

issue the following commands:



   1. `cd lemon-x.y.z'



      This command changes to the directory which was created when you

      extracted the sources. The x.y.z part is a version number.



   2. `./configure'



      This command runs the configure shell script, which does some checks and

      creates the makefiles.



   3. `make'



      This command compiles the non-template part of LEMON into libemon.a

      file. It also compiles the programs in the tools and demo subdirectories

      when enabled.



   4. `make check'



      This step is optional, but recommended. It runs the test programs that

      we developed for LEMON to check whether the library works properly on

      your platform.



   5. `make install'



      This command installs LEMON under /usr/local (you will need root

      privileges to be able to do that). If you want to install it to some

      other location, then pass the --prefix=DIRECTORY flag to configure in

      step 2. For example: `./configure --prefix=/home/username/lemon'.



   6. `make install-html'



      This command installs the documentation under share/doc/lemon/docs. The

      generated documentation is included in the tarball. If you want to

      generate it yourself, then run `make html'. Note that for this you need

      to have the following programs installed: Doxygen, Graphviz, Ghostscript,

      Latex.





Configure Options and Variables

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



In step 2 you can customize the actions of configure by setting variables

and passing options to it. This can be done like this:

`./configure [OPTION]... [VARIABLE=VALUE]...'



Below you will find some useful variables and options (see `./configure --help'

for more):



CXX='comp'



  Change the C++ compiler to 'comp'.



CXXFLAGS='flags'



  Pass the 'flags' to the compiler. For example CXXFLAGS='-O3 -march=pentium-m'

  turns on generation of aggressively optimized Pentium-M specific code.



--prefix=PREFIX



  Set the installation prefix to PREFIX. By default it is /usr/local.



--enable-demo



   Build the examples in the demo subdirectory.



--disable-demo



   Do not build the examples in the demo subdirectory (default).



--enable-tools



   Build the programs in the tools subdirectory (default).



--disable-tools



   Do not build the programs in the tools subdirectory.



--with-glpk[=PREFIX]



   Enable GLPK support (default). You should specify the prefix too if

   you installed GLPK to some non-standard location (e.g. your home

   directory). If it is not found, GLPK support will be disabled.



--with-glpk-includedir=DIR



   The directory where the GLPK header files are located. This is only

   useful when the GLPK headers and libraries are not under the same

   prefix (which is unlikely).



--with-glpk-libdir=DIR



   The directory where the GLPK libraries are located. This is only

   useful when the GLPK headers and libraries are not under the same

   prefix (which is unlikely).



--without-glpk



   Disable GLPK support.



--with-cplex[=PREFIX]



   Enable CPLEX support (default). You should specify the prefix too

   if you installed CPLEX to some non-standard location

   (e.g. /opt/ilog/cplex75). If it is not found, CPLEX support will be

   disabled.



--with-cplex-includedir=DIR



   The directory where the CPLEX header files are located. This is

   only useful when the CPLEX headers and libraries are not under the

   same prefix (e.g.  /usr/local/cplex/cplex75/include).



--with-cplex-libdir=DIR



   The directory where the CPLEX libraries are located. This is only

   useful when the CPLEX headers and libraries are not under the same

   prefix (e.g.

   /usr/local/cplex/cplex75/lib/i86_linux2_glibc2.2_gcc3.0/static_pic_mt).



--without-cplex



   Disable CPLEX support.



--with-soplex[=PREFIX]



   Enable SoPlex support (default). You should specify the prefix too if

   you installed SoPlex to some non-standard location (e.g. your home

   directory). If it is not found, SoPlex support will be disabled.



--with-soplex-includedir=DIR



   The directory where the SoPlex header files are located. This is only

   useful when the SoPlex headers and libraries are not under the same

   prefix (which is unlikely).



--with-soplex-libdir=DIR



   The directory where the SoPlex libraries are located. This is only

   useful when the SoPlex headers and libraries are not under the same

   prefix (which is unlikely).



--without-soplex



   Disable SoPlex support.