#! /bin/bash

# This is a proven way to install xcrysden in Rocks Linux. It should in principle also work in other flavour of linux.
# Simply run this script to automatically install, by default, in /share/apps/xc, unless you modify the behaviour of the active content of this script. 

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# For non Rocks Linux OS, you have to modify the Make.sys file, to be found in the unzipped directory /xc_worked. 
# Uncomment COMPILE_TCLTK = no and COMPILE_MESA  = no; Comment COMPILE_TCLTK = yes and COMPILE_MESA  = yes.
# Essentially, you have to modify the Make.sys file to provide the paths of the libraries, and the name the libraries, to make the compilation work, e.g.,

# COMPILE_TCLTK = no
# COMPILE_MESA  = no
# TK_LIB      = -ltk8.4
# TCL_LIB     = -ltcl8.4
# GLU_LIB     = -lGLU
# GL_LIB      = -lGL
#
# Include directories
# TCL_INCDIR  = -L/usr/lib
# TK_INCDIR   = -L/usr/lib
# GL_INCDIR   = -L/usr/lib
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mkdir /share/apps/xc
cd /share/apps/xc

wget http://www2.fizik.usm.my/configrepo/howto/xcrysden/xc_worked.tar
tar -xvf xc_worked.tar
mv Make.sys Make.sys.orig
wget http://www2.fizik.usm.my/configrepo/howto/xcrysden/Make.sys
make clean
make all

# If no issue occurs, Xcrysden is now installed in /share/apps/xc. Its binaries are to be found in the same directory.
# Two particular banaries are /share/apps/xc/xcConfigure and /share/apps/xc/xcrysden. The latter, when executed, will launch the xcrysden.



### HOW TO USE xcyrsden ###########

# Any user in the Rocks Cluster who wishes to use xcrysden, has to do the following to add into his/her .bashrc the relevant path of xcrysden. To do so, simply do the following:

# su user
# cd /share/apps/xc
# ./xcConfigure

# After these three steps, the user will be able to launch xcrysden from anywhere by typing 'xcrysden'