#! /bin/bash

# Customising for your environment:
# 
# set "directory" to the head directory for your rakudo(s)'
# set "execute" to the directory for perl6 on your $PATH 
# the symbolic link there will be pointed to rakudo's version
# the options on the Configure line may need to be changed

# setup rakudo* after download
# Download, untar, make, install and link test programs

# invoke with get_rakudo yyyy mm
#

# Usage instructions - first line is constant, 2nd is specific

usage_message="Usage: $0 yyyy mm v 
yyyy is year, mm is month, optional v is version #"

min_args=2 # minimum number of arguments
max_args=3 # maximum number

# standard routines

function die
    ## Usage:
    # die <error_message> <exit_code> 
    #(Optional exit code; fill in for other than 1)
{
    echo >&2  "$0: $1"
    exit ${2:-1}  # default error code is 1
}

# test for -h - die $usage_message 0 (--help not yet implemented)
while getopts "h" opt; do
        die "$usage_message" 0 
done

test  $min_args -le $#  -a  $max_args -ge $#  || 
    die "Wrong number ($#) of arguments
$usage_message"

test 2015 -le $1 ||
    die "Year $1 not valid; must be >= 2015"

test  01 -le $2  -a  12 -ge $2  ||
    die "Month $2 not valid; must be 01 to 12"

#  At this point, we've validated request

directory=~/rakudo              # set to wherever you want rakudo
wanted=rakudo-star-$1.$2${3+.}$3 # versioned filename
execute=~/bin                   # where executable is to be invoked

set -e 

cd $directory

test -e $wanted.tar.gz &&       # If we've already downloaded it
   die "$wanted already downloaded"        # Don't bother redoing

curl -O rakudo.org/downloads/star/$wanted.tar.gz # get the tarball

tar -xvf $wanted.tar.gz                    # unpack it
cd $wanted                                 # change into directory

# Note the options on the following line may need to be changed

perl Configure.pl --gen-moar --gen-nqp --backend=moar
make
make install

ln -sf $directory/$wanted/perl6 $execute/perl6  # Point at latest version

perl6 -v        # check run to see what we have

cd -            # return whence you came 

# End get_rakudo Last changed: 2016-02-23 17:43:17