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= Installation =
<<TableOfContents(2)>>

== System requirements ==
In principle, BDF support all Unix-like platforms. However, we strongly propose you to use BDF at Linux platform together Intel Fortran and C compiler because BDF package is developed and thoroughly tested on such platforms. System requirements of BDF is summarized as following lines:

 * OS: Linux, Mac, FreeBSD, Unix
 * Compiler: Fortran 90 compiler such as Intel, gfortran, g95
 * Support softwares: Python, make
 * Parallel environments: MPI

== Configure and compile BDF package ==
Several steps are needed to install BDF package.

 1. Set fortran and C compiler.
  . If you use bash shell, you can set fortran and c compiler:
  {{{
  $export FC=ifort
  $export CC=gcc
  }}}
  . Tips: If you ignored this step, the configure script will pick up the gfortran and gcc compiler as default.

 2. Set blas and lapack library.
  . For flaxibality reason, we ask users to set blas and lapack libraries.
  {{{
  $export MATHLIB="-LMathLibDir -llapackname -lblasname"
  }}}

 3. Configure BDF package.
  
  After setting compiler and mathematic library. You can configure BDF by command configure in BDF root directory.
  {{{ 
  $./configure
  }}}

  
  Configure support several parameters.
  {{{
  --enable-debug=yes[no]   Compile BDF in debug mode.
  --enable-i8=yes[no]      Compile BDF with 64 bit integrals.
  --enable-openmp=yes[no]  Compile BDF with OpenMP supporting.
  }}}

 4. Compile BDF package.
  {{{
  $make 
  }}}

 5. Some typical installation

  * A 64bit machine with intel compiler and MKL library.
  {{{
  $export FC=ifort
  $export CC=gcc
  $export MATHILIB="-L/opt/intel -lmkl -lguide"
  $./configure --enabale-i8=yes --enable-openmp=yes
  $make
  }}}

  * A Mac laptop with gfortran, gcc and user compiled lapack and blas library 
  {{{
  $export FC=gfortran 
  $export CC=gcc $export MATHILIB="-L/Users/mike/mathlib -lblas -llapack" 
  $./configure --enabale-i8=yes --enable-openmp=yes 
  $make
  }}}

== Set system variables of BDF package ==