Free Knowledge Resources


Linux Manual Pages


Free Software * Books

Source Code

Free Media

Linux

rheolef-config(1rheolef)


NAME

   rheolef-config -- get installation directories

EXAMPLE

   The following command returns the rheolef libraries directory:

           rheolef-config --libdir

   An environment sanity check writes:

           rheolef-config --check

DESCRIPTION

   This   command  is  usefull  when  linking  executables  with  rheolef:
   libraries locations are required by the link editor.  Such  directories
   are  defined  while  configuring rheolef, before to compile and install
   see  .   Installing}'.   The  rheolef-config  command   returns   these
   settings.

   Note   that   rheolef-config   could  be  used  in  Makefiles  for  the
   determination of linker flags.

   Another usefull  feature  is  the  --check  option.   When  rheolef  is
   installed  in  a  user  directory,  i.e. not as root, the sane run-time
   environment depends upon two environment variables. The  first  one  is
   the  PATH:  bkindir  directory  may  be  present  in  PATH.  The second
   environment variable is related to shared libraries, and  its  name  is
   system-dependent,   e.g.    LD_LIBRARY_PATH   on   most  platforms  and
   SHLIB_PATH on HP-UX.  Its content may contains bindir.

           rheolef-config --shlibpath-var

   Since it is a  common  mistake  to  have  incorrect  values  for  these
   variable,  for novice users or for adanced ones, especialy when dealing
   with several installed versions, the environment sanity check writes:

           rheolef-config --check

   If there is mistakes, a hint is suggested to  fix  it  and  the  return
   status is 1. Instead, the return status is 0.

FILE OPTIONS

   --version
          rheolef version.

   --help print option summary and exit.

   --prefix
          install architecture-independent files location.

   --exec-prefix
          architecture-dependent files location.

   --includedir
          include header directory.

   --bindir
          executables directory.

   --mandir
          man documentation directory.

   --libdir
          object code libraries directory.

   --datadir

   --datarootdir
          read-only architecture-independent data location.

   --pkgdatadir
          read-only  architecture-independent  data location; specific for
          package.

   --includes
          include compiler flags.

   --libs library compiler flags.

   --shlibpath-var
          the shared library path variable.

   --library-interface-version
          the library interface version.

   --hardcode-libdir-flag-spec
          flag to hardcode a libdir into a binary during linking.

   --is-distributed
          true or false: whether it is the distributed version.

   --float
          returns the rheolef Float type. Float is double  by  defaut.  It
          could  also  be an extended arithmetic precision type as dd_real
          (quadruple precisio or qd_real (octuple precision), depending on
          the configure option at compile time.

   --have-old-code

   --have-new-code
          true  or  false:  whether  it is the new/old code branch that is
          installed.



Opportunity


Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.



Free Software


Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.



Free Books


The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.



Education


Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.


birds banner