CERNLIB(1)						      General Commands Manual							CERNLIB(1)

NAME

       cernlib - print CERN library dependencies

SYNOPSIS

       cernlib [options] libraries

DESCRIPTION

       cernlib	is  a tool to list the compiler and linker options necessary to compile a CERNLIB program that has the given library dependencies.
       It is generally used within a command substitution, as in the following example:

       gfortran -o myprogram myprogram.F `cernlib -G Motif pawlib`

       This version of cernlib has been completely rewritten from the original script provided by CERN.  It now does recursive library	dependency
       checking and removes duplicate entries.

       Note  that by default, the cernlib script assumes that the CERN libraries are to be linked against statically; if the environment variables
       $CERN or $CERN_ROOT are specified, it looks for the libraries only in the "lib" subdirectory of those locations, not any "shlib"  subdirec-
       tory.  Furthermore, the script brackets the CERN libraries with linker instructions to link statically.	This is done to preserve the orig-
       inal upstream behavior, in which all CERNLIB libraries exist only in static form.  For instance, "cernlib packlib" outputs:

       -Wl,-static -lpacklib -lkernlib -Wl,-dy -lm -lnsl -lcrypt -ldl -lg2c

       If you want to link against ALL libraries (including CERNLIB) either statically or dynamically, call the cernlib script with its -safe flag
       to  omit  these bracketing linker flags.  That is: if you want to link against all libraries (not just CERNLIB) statically, use the -static
       compiler flag and call cernlib with its -safe flag:

       gfortran -o myprogram myprogram.F -static `cernlib -safe -G Motif pawlib`

       and if you want to link against all libraries (including the CERN libraries) dynamically, use the same command without the -static compiler
       flag (the linker assumes dynamic linking by default):

       gfortran -o myprogram myprogram.F `cernlib -safe -G Motif pawlib`

OPTIONS

       -a arch
	      Specify a system architecture, e.g. Linux (default), AIX, HP-UX, etc.

       -dy    Equivalent to -safe; for backwards compatibility.

       -G driver
	      Specify  a  graphics  driver.   The  available options on Linux are X11 and Motif (the latter option will also work when the Lesstif
	      library is present).

       -P, -s Ignored; for backwards compatibility.

       -safe  Do not make any assumptions about whether the CERN libraries should be linked  against  dynamically  or  statically.   (The  default
	      behavior, if this flag is not used, is to link them statically.)

       -u     Do not include architecture-specific libraries in the output.

       -v version
	      Specify  version of $CERN_LEVEL.	This is meaningless unless you have installed an upstream version of CERNLIB (i.e. not packaged by
	      Debian); see the file /usr/share/doc/cernlib-base/README.Debian.

       -?, --help
	      Show a summary of options.

       --     Tell cernlib that this marks the end of cernlib-specific flags, and all following arguments are to be parsed  as	described  in  the
	      LIBRARIES  section  below.   If  -- is not given, the first word parsed as a library name will be the first word not starting with a
	      hyphen "-" that is not an argument to a preceding cernlib flag.

LIBRARIES

       The following library names are recognized by this version of the cernlib script.  These names may be used exactly as shown here,  or  pre-
       fixed by "-l".

       Core CERN libraries
	      mathlib, packlib, kernlib

       Graphics and PAW libraries
	      graflib, pawlib

       Monte Carlo and GEANT libraries
	      cojets, eurodec, geant321, herwig59, isajet758, pdflib804, photos202, phtools

       Additional Monte Carlo libraries
	      (to obtain these, see /usr/share/doc/montecarlo-base/README.Debian)
	      ariadne, ariadne-p5, fritiof, jetset, lepto, pythia5, pythia6

       Aliases
	      The numerals at the end may be left off most of the library names above.

       Other library names
	      Various  other  names are recognized for backwards compatibility, internal use, and non-Linux architectures.  For the complete list,
	      please see the cernlib script.

       Other  Any names not recognized by cernlib that start with "-l" or with any character other than a hyphen ("-") are output as  -l${name#-l}
	      (i.e.,  are assumed to be a library).  Names starting with a hyphen for which the second character is not "l" are assumed to be com-
	      piler flags, and are output at the beginning of the line before all other output.

SEE ALSO

       /usr/share/doc/cernlib-base/README.Debian describes some of the changes that have been made to the CERN libraries in order to  comply  with
       Debian policy and the Filesystem Hierarchy Standard.

       CERNLIB documentation for all related libraries and programs is available at the following URL: http://cern.ch/cernlib/

AUTHOR

       This manual page and the version of the cernlib script that it describes were written by Kevin McCarty <kmccarty@debian.org> for the Debian
       GNU/Linux system (but may be used by others).  They are licensed under the GNU General Public License, version 2 or later (at your choice).

COPYRIGHT

       Copyright (C) Kevin B. McCarty, 2002, 2003, 2004, 2005, 2006.

								    Jan 6, 2005 							CERNLIB(1)