X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/2788353a98f50642ccedddc9ebf6d91f7c4e0276..033de87f380b64bf9f558f5d5c412d31230040c0:/configpm

diff --git a/configpm b/configpm
index bea9ef5..6ea7419 100755
--- a/configpm
+++ b/configpm
@@ -149,14 +149,17 @@ die "Can't automatically determine name for Config_heavy.pl from '$Config_PM'"
 my $config_txt;
 my $heavy_txt;
 
-$heavy_txt .= <<'ENDOFBEG';
+my $from = $^O eq 'VMS' ? 'PERLSHR image' : 'binary (from libperl)';
+my $env_cygwin = $^O eq 'cygwin'
+    ? 'push @env, "CYGWIN=\"$ENV{CYGWIN}\"" if $ENV{CYGWIN};' . "\n" : "";
+$heavy_txt .= sprintf <<'ENDOFBEG', $^O, $^O, $from, $^O, $env_cygwin;
 # This file was created by configpm when Perl was built. Any changes
 # made to this file will be lost the next time perl is built.
 
 package Config;
 use strict;
 use warnings;
-use vars '%Config';
+use vars '%%Config';
 
 sub bincompat_options {
     return split ' ', (Internals::V())[0];
@@ -176,6 +179,9 @@ sub local_patches {
 }
 
 sub _V {
+    die "Perl lib was built for '%s' but is being run on '$^O'"
+        unless "%s" eq $^O;
+
     my ($bincompat, $non_bincompat, $date, @patches) = Internals::V();
 
     my $opts = join ' ', sort split ' ', "$bincompat $non_bincompat";
@@ -185,11 +191,7 @@ sub _V {
     $opts =~ s/(?=.{53})(.{1,53}) /$1\n                        /mg;
 
     print Config::myconfig();
-    if ($^O eq 'VMS') {
-        print "\nCharacteristics of this PERLSHR image: \n";
-    } else {
-        print "\nCharacteristics of this binary (from libperl): \n";
-    }
+    print "\nCharacteristics of this %s: \n";
 
     print "  Compile-time options: $opts\n";
 
@@ -198,15 +200,14 @@ sub _V {
         print "\t$_\n" foreach @patches;
     }
 
-    print "  Built under $^O\n";
+    print "  Built under %s\n";
 
     print "  $date\n" if defined $date;
 
-    my @env = map { "$_=\"$ENV{$_}\"" } sort grep {/^PERL/} keys %ENV;
-    push @env, "CYGWIN=\"$ENV{CYGWIN}\"" if $^O eq 'cygwin' and $ENV{CYGWIN};
-
+    my @env = map { "$_=\"$ENV{$_}\"" } sort grep {/^PERL/} keys %%ENV;
+%s
     if (@env) {
-        print "  \%ENV:\n";
+        print "  \%%ENV:\n";
         print "    $_\n" foreach @env;
     }
     print "  \@INC:\n";
@@ -412,13 +413,12 @@ my $f = $t eq 'long' ? 'L!' : $s == 8 ? 'Q': 'I';
 
 my $byteorder_code;
 if ($s == 4 || $s == 8) {
-    my $list = join ',', reverse(2..$s);
+    my $list = join ',', reverse(1..$s-1);
     my $format = 'a'x$s;
     $byteorder_code = <<"EOT";
 
-my \$i = 0;
-foreach my \$c ($list) { \$i |= ord(\$c); \$i <<= 8 }
-\$i |= ord(1);
+my \$i = ord($s);
+foreach my \$c ($list) { \$i <<= 8; \$i |= ord(\$c); }
 our \$byteorder = join('', unpack('$format', pack('$f', \$i)));
 EOT
 } else {
@@ -809,8 +809,8 @@ if ($Common{byteorder}) {
 }
 my $fast_config = join '', map { "    $_,\n" } sort values %Common;
 
-# Sanity check needed to stop an infite loop if Config_heavy.pl fails to define
-# &launcher for some reason (eg it got truncated)
+# Sanity check needed to stop an infinite loop if Config_heavy.pl fails to
+# define &launcher for some reason (eg it got truncated)
 $config_txt .= sprintf <<'ENDOFTIE', $fast_config;
 
 sub DESTROY { }