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Content:
================================================================================
0. Preliminary remarks and notations.
1. Compilers
2. Additional packages
3. Compilation of package from source distributive.
4. Install a user directory:
5. Additional services are provided.
6. Previous version incompatibilities.


0. Preliminary remarks and notations.
================================================================================

In this document we suppose that the OS is Linux. So, if you have another 
OS on the computer, please adopt the procedure as you need.


Below, we use the following notations: 

      XXXX - CompHEP version number; 
      comphep-XXXX - directory where CompHEP files will live; 
      comphep-XXXX.tgz - tar-file with sources; 

The installation from binary distributive see in section 4. 


1. Compilers
================================================================================
Now default compilers for CompHEP are gcc-3.x and g77. If you execute 
./configure without options, it generates 5 files: CC, F77, CFLAGS, CLIBS, 
and FORLIBS. 
CC and F77 contain information on compilers. 
CFLAGS defines options for compilation with gcc.
CLIBS and FORLIBS contains option for a linker and calls of libraries. 

In general, there are 3 possible cases:
1) gcc (version 3.x) and g77: use ./configure without extra compiler option
2) gcc (version 4.x) and gfortran: use ./configure --with-gcc4
3) gcc (version 4.x) and g77: use ./configure --with-gcc4 and 
   edit F77 (gfortran -> gcc) and FORLIB (remove -lgfortran)

If you would like to compile the code with -g, use ./configure --debug



2. Additional packages
================================================================================

I. LHAPDF

  Read doc/LHAPDF_in_CompHEP-HOWTO



3. Compilation of package from sources.
================================================================================

1) Unarchive gzip-tar distributive archive:

      tar xzvf comphep-XXXX.tgz

   The directory with name comphep-XXXX will be created 
   with all files of CompHEP distributive.

2) Pass to the comphep-XXXX directory:

      cd comphep-XXXX

3) Launch the script configure with necessary options (see sec. 1):

     ./configure

4) Compile the CompHEP package:

      make

If the building of CompHEP is OK, then go to point 2 "Setup a user directory" 
below.


NOTE:
{path_to_x-libs} and {path_to_x-includes} are included by CompHEP automatically.



4. Setup a user directory:
================================================================================

To setup user directory you have to run

      make setup WDIR=path_to_user_work_directory

NOTES:
1) The value of WDIR should point to the user
   working directory (the default value is 
  ../comphep_XXXX_test relatively to $COMPHEP).

2) Do not use '~' (tilde) to point to home directory. 
   Use ${HOME} variable.

After installation the user directory will be created and all needed files 
will be copied there.



5. Additional services in make.
================================================================================

  - Clean up CompHEP sources (all binaries/libraries survive):
        make clean

  - Clean up CompHEP sources completely:
        make distclean

  - make tar gzip archive of CompHEP:
        make dist

NOTE:
  Archive will be in the directory {comphep-XXXX}/.. and will have 
  the name comphep-XXXX.tgz 
