configure

#!/usr/bin/perl

# This is file configure
# written by Dr. Daniel C. Hatton 

# Daniel Hatton can be contacted on <dan.hatton@physics.org> 

# Copyright (C) 2022 Dr. Daniel C. Hatton

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation: version 3 of the License.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program (in file LICENSE).  If not, see
# <https://www.gnu.org/licenses/>.

my $prefix = "/usr/local" ;

for(@ARGV) {

    if ($_ =~ /prefix\=\S+\s*/) {
	$_ =~ /prefix\=(\S+)\s*/ ;
	$prefix = $1 ;
    }
    
}

open(PREFIXSUB, "> prefix") ;

printf PREFIXSUB "push \@INC, \\\&prefix ;\n" ;
printf PREFIXSUB "sub prefix {\n" ;
printf PREFIXSUB "return \"" . $prefix ."\" ;\n" ;
printf PREFIXSUB "}\n" ;

close PREFIXSUB ;