#!/bin/sh
#
# check that the host has the right version of BaBar required UNIX tools
#
# This script should not assume that the host system has any BaBar 
# software installed yet, but does check things there
#
# Doug Wright, July 1995 original, tested gmake
# Bob Jacobsen, Dec 1995 added g++, fixed gmake
# Bob Jacobsen, Jan 1996 added environment variables

# versions to search for
# minimal gmake
gmake_ver=3.74
# requested cvs, followed by minimal acceptable cvs
cvs_ver=1.6
cvs_ok=1.3
cvs_date="March 1996"
# current gcc/g++, followed by the one we will switch to 
gcc_ver=2.6.3
gcc_ver_next=2.7.2
gcc_date="March 1996"

##### start 

echo "Checking that `hostname` has the required UNIX utilities for BaBar Software\n"

##### internal variables

##### check gmake
gmake_ask="please acquire gmake version $gmake_ver from another system \n or from prep.ai.mit.edu:pub/gnu"
if   t=`gmake -v`               
then v=`expr substr "$t" 18 4`  # get gmake version number
     if a=`expr $v \>= $gmake_ver` 
     then echo gmake version=$v is OK
     else echo gmake is out of date, $gmake_ask
     fi
else 
	echo gmake is missing, $gmake_ask
fi

##### check gcc
# version string is sent to stderr, dammit
v=`gcc -V$gcc_ver -v 2>&1 | grep version|cut -f3 -d" "`
if [ "$v" = "$gcc_ver" ]; then
	     echo "gcc/g++ version=$v is available, OK"
	else echo "gcc/g++ version $gcc_ver is currently required, please acquire it from another system or prep.ai.mit.edu:/pub/gnu"
	fi

v=`gcc -V$gcc_ver_next -v 2>&1 | grep version|cut -f3 -d" "`
if [ "$v" = "$gcc_ver_next" ]; then
	     echo "gcc/g++ version=$v is available, OK"
	else echo "gcc/g++ version $gcc_ver_next will be required after $gcc_date, please acquire it from another system or prep.ai.mit.edu:/pub/gnu"
	fi

##### check awk or gawk

##### check CVS, rCVS, and rdist
v=`cvs -v | grep Concurrent| cut -f5 -d" " `
if a=`expr $v \>= $cvs_ver`
	then echo cvs version=$v is OK
	else 
		if a=`expr $v \>= $cvs_ok`
		then echo "cvs $v is OK only until $cvs_date, please contact Terry Hung at SLAC for $cvs_ver"
		else echo "cvs $v is out of date and will not work, please contact Terry Hung at SLAC for $cvs_ver"
		cvs -v | grep Concurrent
		fi
	fi

##### start SRT checks

if [ "`printenv BFROOT`" = "" ]; then echo "BFROOT not set"; fi
if [ "`printenv BFDIST`" = "" ]; then echo "BFDIST not set; usually set by SRTstartup script"; fi
if [ "`printenv BFARCH`" = "" ]; then echo "BFARCH not set; usually set by SRTstartup script"; fi

##### verify gcc library setup
#then
#	echo "Starting to verify BaBar installation"
#else
#	echo "gmake not present, cannot continue"
#	exit 1
#fi