fmake 0.1: a small script for the easy creation of makefile for Fortran (standard 90 or higher) projects
  the aim is to easily create the compiling rules with the correct hierarchy for inter-dependent modules
  Usage: fmake [options [args]]
  Options:
    -h
      print this help message
    -s [dir]
      dir = directory containing source files .[fF][90,95,03,08,2k], default './src/'
    -m [makefile]
      makefile = file name of the output makefile, default 'makefile'
    -header or -hd [header]
      header = file containing the 'user defined header' of makefile, it is not used by default
      Note:
           if no header file is used a very basic header of the makefile is automatically created by fmake
           and the user must check the makefile before use it
    -fc [fortran_compiler]
      fortran_compiler = name of Fortran compiler, default 'gfortran'
    -dobj [dir_obj]
      dir_obj = compiled objects directory name, default './obj/'
    -dmod [dir_mod]
      dir_mod = module interfaces directory name, default './mod/'
    -dexe [dir_exe]
      dir_exe = executable programs directory name, default './'
    -optc ['compiling_options']
      compiling_options = compiling options, default '-c -J$(DMOD)'
    -optl ['linking_options']
      linking_options = linking options, default ''
    -libs ['libraries_list']
      libraries_list = external libraries to be linked, default ''
    -simple
      produce a simple makefile without colorful output and compilation errors/warnings log files
  Note:
       The hierarchy of compiling rules is made up without the intrinsic modules, namely the 'OMP_LIB' and 'MPI' modules.