#!/usr/bin/perl -w
#
# Configure this package.
#
use Config;

#
# First make sure this version of perl is recent enough:
#
eval { require 5.00503; };
if ($@) {			# Not recent enough?
  die "I need perl version 5.005 or newer.  If you have it installed 
somewhere already, run this installation procedure with that perl binary, e.g.,

	perl5.005 install.pl

If you don't have a recent version of perl installed (what kind of system are
you on?), get the latest from www.perl.com and install it.
";
}

if ($] == 5.006) {
  print "**************** You're running perl 5.6.0.  *************************

perl 5.6.0 has a bug which can cause makepp to behave in a bizarre fashion.
This bug is not encountered in every makefile, so you might be ok.  But it
would be safer to upgrade to another version of perl (e.g., 5.8.0 does
not seem to have the problem).

Press return to continue:
";
  $_ = <STDIN>;
}

#
# Parse the arguments:
#
$prefix = "/usr/local";

while (@ARGV) {
  $_ = shift @ARGV;             # Get the next argument.
  if (/^--help/ || /^-h/) {
    die "Usage: configure [option]

where options are:
   -h, --help    This help message.
   --prefix=/path/to/installation
                 Specify location where you want to install everything.
   --bindir=/path/to/installation/bin
                 Where the binaries go.  Makepp's binaries are just perl
                 scripts so they are architecture independent.
   --htmldir=/path/to/installation/share/html
                 Where the HTML documentation goes.  Specify 'none' if you
                 do not want the documentation installed.  (You can always
                 read it online at http://makepp.sourceforge.net.)
   --mandir=/path/to/man
                 Where the manual pages should reside.  Specify 'none' if you
                 do not want the documentation installed.
   --datadir=/path/to/installation/share/makepp
                 Where to install makepp's library files.
";   
  }
  elsif (/^--?prefix(?:=(.*))?/) {
    $prefix = $1 || shift @ARGV;
  }
  elsif (/^--?bindir(?:=(.*))?/) {
    $bindir = $1 || shift @ARGV;
  }
  elsif (/^--?datadir(?:=(.*))?/) {
    $datadir = $1 || shift @ARGV;
  }
  elsif (/^--?mandir(?:=(.*))?/) {
    $mandir = $1 || shift @ARGV;
  }
  elsif (/^--?htmldir(?:=(.*))?/) {
    $htmldir = $1 || shift @ARGV;
  }
}

$bindir ||= "$prefix/bin";
$datadir ||= "$prefix/share/makepp";
$htmldir ||= "$prefix/share/makepp/html";
$mandir ||= "$prefix/man";

foreach ($bindir, $datadir, $htmldir) {
  s@~/@$ENV{'HOME'}/@;
}

#
# Load the current version:
#
open(VERSION, "VERSION") || die "$0: file VERSION is missing\n";
$VERSION = <VERSION>;
chomp $VERSION;
close VERSION;

#
# Write out a makefile for this.  This makefile ought to work with any version
# of bozo make, so it has to be extremely generic.
#
open(MAKEFILE, "> Makefile") or die "$0: can't write Makefile--$!\n";
print MAKEFILE "PERL = $Config{'perlpath'}
BINDIR = $bindir
DATADIR = $datadir
MANDIR = $mandir
HTMLDIR = $htmldir
VERSION = $VERSION
";

print MAKEFILE q[

all: test

test:
	cd makepp_tests && PERL=$(PERL) $(PERL) run_tests.pl

distribution: makepp-$(VERSION).tar.gz

makepp-$(VERSION).tar.gz: README INSTALL LICENSE VERSION makepp.lsm ChangeLog \
	makepp recursive_makepp Signature/*.pm *.mk *.pm \
	pod/*.pod pod/pod2html makepp_tests/*.test makepp_tests/run_tests.pl \
	Makefile config.pl configure install.pl
	rm -rf makepp-$(VERSION)
	./configure         # Reset Makefile.	  
	mkdir makepp-$(VERSION)
	mkdir makepp-$(VERSION)/pod makepp-$(VERSION)/makepp_tests \
	   makepp-$(VERSION)/Signature
	for file in $^; do cp $$file makepp-$(VERSION)/$$file; done
	GZIP=-9 tar --create --gzip --file $@ makepp-$(VERSION)
	cd makepp-$(VERSION) && make test    # Make sure it all runs.
	rm -rf makepp-$(VERSION)

install: all
	$(PERL) install.pl $(BINDIR) $(DATADIR) $(MANDIR) $(HTMLDIR)

.PHONY: all distribution install test
];