configure

#!/bin/bash

# checking if the Enviroment variable is already configured
if [ $LIBDEEP_DIR ] 
then 
    echo "# The Enviroment variable LIBDEEP_DIR=${LIBDEEP_DIR} is already set, nothing to do here."
    exit
fi

########## Checking the other libraries Enviroment Variables ##########

if [ $OPF_DIR ] 
then
    echo "OPF_DIR:... OK!"
else
    tput setaf 1; echo "ERROR: You should configure and compile LibOPF first."; tput sgr0
    echo "Exiting due to the previous errors..."
    exit
fi 
####################################################


########## GSL DOWNLOAD AND CONFIGURATION ##########
# checking GSL existence
# if is gretter than one the GSL library is probably installed.
if [ $(whereis libgsl | wc -w) -gt 1 ] 
then 
	echo "GNU Scientific Library (GSL) is already installed, nothing to do here."
else
	printf "We will now perform the GNU Scientific Library (GSL) configuration and instalation. \n\n"
	# creating a temporary directory
	mkdir tmp
	# downloading the lastest version of the GNU Scientific Library (GSL)
	wget ftp://ftp.gnu.org/gnu/gsl/gsl-latest.tar.gz -P tmp/
	# extracting the downloaded file
	tar -xf tmp/gsl-latest.tar.gz -C tmp/
	# entering the GSL directory
	cd tmp/gsl*/
	# executiong the configuration file of the GSL
	./configure
	# compiling the GSL library
	make
	# installing the GSL library
	make install
	# returning to the original directory
	cd ..
	# deleting the temporary folder
	rm -r tmp/
fi
####################################################

########## Enviroment Variable Configuration ##########

# adding the environment variable of the LibDEEP library to the .bashrc
# checking if the Enviroment variable is already configured
if [ $LIBDEEP_DIR ] 
then 
    echo "# The Enviroment variable LIBDEEP_DIR=${LIBDEEP_DIR} is already set, nothing to do here."
else
    LIBDEEP_DIR=$(pwd)
    
    echo "Adding Enviroment variable to ${LIBDEEP_DIR}."    
    echo "" >> ~/.bashrc
    echo "# added by LibDEEP" >> ~/.bashrc
    echo "export LIBDEEP_DIR=${LIBDEEP_DIR}" >> ~/.bashrc
    
    echo "Please run the following on your current shell:"
    echo "source ~/.bashrc"
    echo "Or close this shell session and open a new one."
fi 
####################################################