#!/usr/bin/perl
######################################################################
# This script configures the CCSO Nameserver.
#
# The configuration process includes:
#       Building include files
#       Building Makefiles
#
# The script first sources defaults. Then, it sources each of its
# arguments in turn.  This allows maximum flexibility in configuration.
#
# defaults contains a list of things you might want to put in
# your own configuration files
######################################################################
#
# Copyright (c) 1985 Corporation for Research and Educational Networking
# Copyright (c) 1988 University of Illinois Board of Trustees, Steven
#               Dorner, and Paul Pomes
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 3. All advertising materials mentioning features or use of this software
#    must display the following acknowledgement:
#       This product includes software developed by the Corporation for
#       Research and Educational Networking (CREN), the University of
#       Illinois at Urbana, and their contributors.
# 4. Neither the name of CREN, the University nor the names of their
#    contributors may be used to endorse or promote products derived from
#    this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE TRUSTEES AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE TRUSTEES OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# @(#)$Id: Configure,v 1.2 1994/03/12 01:12:10 paul Exp $


######################################################################
# Setup
######################################################################
print "\nWARNING: This version of Configure now expects any DefineStrings to\n";
print 'be uppercase, e.g., $DefineStrings{"DATABASE"} = "/nameserv/db/prod"';
print "\n\nConfiguring for ". join(' ',@ARGV) . "\n";
@INC = (@INC,"configs");                # search configs
require "defaults";                     # read defaults
foreach $a (@ARGV) {require $a;}        # and each argument file
chdir $SrcDir || die "$SrcDir: $!\n";

######################################################################
# All our settings are now read.  Let's get to work.
######################################################################

######################################################################
# Phase 1; generate configuration files
######################################################################
&OpenOrElse(CONFH,">include/conf.h",1);
&OpenOrElse(CONFC,">qi/conf.c",1);
print CONFH "#ifndef CONF_H\n#define CONF_H\n";

foreach $f (@Features) {
       print CONFH "#define $f\n";eval "\$$f=1;";
       if ($f eq "KERBEROS") {
               if ($KrbIncDir) {$Cflags .= " -I$KrbIncDir";}
               if ($KrbLibDir) {$MoreLib .= " -L$KrbLibDir";}
               $MoreLib .= " -lkrb -ldes";
               $PhFlags .= " -DKERBEROS";
       }
       if ($f eq "CRACKLIB") {
               $MoreLib .= " $LibDir/libcrack.a";
       }
}
print CONFH "#define OWNER \"$Owner\"\n";
print CONFH "#define GROUP \"$Group\"\n";
if (!$EMAIL_AUTH)
 {$StripEmail = ";perl -i -n -e 'if (!/email/) {print;}' temp.l";}

print CONFH "extern char *OkAddrs[];\n";
print CONFC "char *OkAddrs[]={";
foreach $ok (@OkAddrs) {print CONFC qq/"$ok",/;}
print CONFC "0};\n";

print CONFH "extern char *LocalAddrs[];\n";
print CONFC "char *LocalAddrs[]={";
foreach $loc (@LocalAddrs) {print CONFC qq/"$loc",/;}
print CONFC "0};\n";

$i = 1;
print CONFH "extern char *Strings[];\n";
print CONFC '#include <sys/param.h>'."\n";
print CONFC '#include "conf.h"'."\n";
print CONFC "char *Strings[] = {\n";
foreach $d (keys(%DefineStrings))
{
 printf CONFH "#define $d (Strings[%d])\n",$i;
 $i += 2;
 print CONFC qq/  "$d","$DefineStrings{$d}",\n/;
}
print CONFC "0 };\n";
foreach $d (keys(%OtherDefines))
{
 $realD = $d;
 $realD =~ tr/a-z/A-Z/;
 print CONFH "#define $realD $OtherDefines{$d}\n";
}
print CONFH "extern char *Database;\n#endif\n";
print CONFC "char *Database = NULL;\n";
close(CONFH);
close(CONFC);

######################################################################
# Phase 2; generate the Makefiles
#  Except for the top-level makefile, these are generated by eval-ing
#  each line of Makefile.templ, and adding some stuff
######################################################################
foreach $l (@PhLinks) {$PhLinks .= "\t-ln -s ph \$(DESTDIR)/$l\n";}
chop($PhLinks);
foreach $phopt (keys(%PhFlags))
{
 $PhFlags .= " -D";
 $opt = $phopt;  $opt =~ tr/a-z/A-Z/;
 $PhFlags .= $opt;
 if ($PhFlags{$phopt} ne "")
 {
   $PhFlags .= qq|=\\"$PhFlags{$phopt}\\"|;
 }
}
&OpenOrElse(TOPMAKE,">Makefile",1);
print TOPMAKE $DontEditMake;

foreach $targ (@TopTargets)
{
 print TOPMAKE $targ eq "install" ? "$targ: all\n" : "$targ:\n";
 if ($targ eq "clean") {print TOPMAKE "\trm -f tags\n";}
 foreach $dir (@WantDirs) {print TOPMAKE "\tcd $dir; make $targ\n";}
 print TOPMAKE "\n";
}
print TOPMAKE "tags:\n\tcd lib; ctags -t -f ../tags ../*/*.[chly]\n";
foreach $dir (@WantDirs) {print TOPMAKE "\tln tags $dir/tags\n";}
close(TOPMAKE);

foreach $dir (@WantDirs)
{
 &OpenOrElse(TEMPLATE,"<$dir/Makefile.templ",0);
 &OpenOrElse(MAKEFILE,">$dir/Makefile",1);
 chdir $dir || die "$dir: $!";

 print MAKEFILE $DontEditMake;

 #
 # copy makefile, expanding variables as we go
 #
 while (<TEMPLATE>)
 {
   $_ = &SubLine($_);
   print MAKEFILE $_;
 }
 print MAKEFILE "# DO NOT DELETE THIS LINE.\n\n";

 close(TEMPLATE);
 close(MAKEFILE);
 chdir $SrcDir;
}

system("make clean" . ($Depend ne "" ? " depend" : ""));

######################################################################
# subroutines
######################################################################
sub OpenOrElse
{
 ($filehandle,$filename,$snitch) = @_;
 $fnOnly = substr($filename,1);
 if (open($filehandle,$filename)) {if ($snitch) {print "$fnOnly...\n";}}
 else {die "$fnOnly: $!\n";}
}

sub SubLine
{
 $line = "";
 @line = split('_',$_[0]);
 for ($i=0;;$i+=2)
 {
   if ($i>$#line) {last;}
   $line .= $line[$i];
   if ($i==$#line) {last;}
   $line .= eval("\$$line[$i+1]");
 }
 $line;
}

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