diff --git a/configure b/configure
index d53628f..b275ca2 100755
--- a/configure
+++ b/configure
@@ -19312,9 +19312,7 @@ if test "$PERL" = "no" || test ! -x "$PERL"; then
 fi
 # Let the user override the variable.
 if test -z "$PERL_LIBDIR"; then
-PERL_LIBDIR=$($PERL -MConfig -e 'my $r = $Config{vendorlibexp};
-                                 $r =~ s/$Config{vendorprefixexp}/\$(prefix)/;
-                                 print $r')
+PERL_LIBDIR="$prefix/perl"
 fi
 
 
diff --git a/scripts/Dpkg/Checksums.pm b/scripts/Dpkg/Checksums.pm
index 41865f3..c61cbca 100644
--- a/scripts/Dpkg/Checksums.pm
+++ b/scripts/Dpkg/Checksums.pm
@@ -51,15 +51,15 @@ about supported checksums.
 
 my $CHECKSUMS = {
     md5 => {
-	program => [ 'md5sum' ],
+	program => [ 'md5', '-q' ],
 	regex => qr/[0-9a-f]{32}/,
     },
     sha1 => {
-	program => [ 'sha1sum' ],
+	program => [ 'shasum', '-a', '1' ],
 	regex => qr/[0-9a-f]{40}/,
     },
     sha256 => {
-	program => [ 'sha256sum' ],
+	program => [ 'shasum', '-a', '256' ],
 	regex => qr/[0-9a-f]{64}/,
     },
 };
diff --git a/scripts/Dpkg/Source/Archive.pm b/scripts/Dpkg/Source/Archive.pm
index 2f76ea9..8eaebde 100644
--- a/scripts/Dpkg/Source/Archive.pm
+++ b/scripts/Dpkg/Source/Archive.pm
@@ -48,7 +48,7 @@ sub create {
     $spawn_opts{from_pipe} = \*$self->{tar_input};
     # Call tar creation process
     $spawn_opts{delete_env} = [ 'TAR_OPTIONS' ];
-    $spawn_opts{exec} = [ 'tar', '--null', '-T', '-', '--numeric-owner',
+    $spawn_opts{exec} = [ 'gtar', '--null', '-T', '-', '--numeric-owner',
                             '--owner', '0', '--group', '0', '--format=gnu',
                             @{$opts{options}}, '-cf', '-' ];
     *$self->{pid} = spawn(%spawn_opts);
@@ -125,7 +125,7 @@ sub extract {
 
     # Call tar extraction process
     $spawn_opts{delete_env} = [ 'TAR_OPTIONS' ];
-    $spawn_opts{exec} = [ 'tar', '--no-same-owner', '--no-same-permissions',
+    $spawn_opts{exec} = [ 'gtar', '--no-same-owner', '--no-same-permissions',
                             @{$opts{options}}, '-xf', '-' ];
     spawn(%spawn_opts);
     $self->close();
diff --git a/scripts/Makefile.am b/scripts/Makefile.am
index 8ffae3a..12ceb32 100644
--- a/scripts/Makefile.am
+++ b/scripts/Makefile.am
@@ -120,7 +120,7 @@ nobase_dist_perllib_DATA = \
 man3_MANS =
 
 do_perl_subst = $(AM_V_GEN) \
-		sed -e "s:^\#![[:space:]]*/usr/bin/perl:\#!$(PERL):" \
+		sed -e "s:^\#![[:space:]]*/usr/bin/perl:\#!$(PERL) -I$(PERL_LIBDIR):" \
 		    -e "s:\$$CONFDIR[[:space:]]*=[[:space:]]*['\"][^'\"]*['\"]:\$$CONFDIR='$(pkgconfdir)':" \
 		    -e "s:\$$ADMINDIR[[:space:]]*=[[:space:]]*['\"][^'\"]*['\"]:\$$ADMINDIR='$(admindir)':" \
 		    -e "s:\$$LIBDIR[[:space:]]*=[[:space:]]*['\"][^'\"]*['\"]:\$$LIBDIR='$(pkglibdir)':" \
diff --git a/scripts/Makefile.in b/scripts/Makefile.in
index 754f423..e131341 100644
--- a/scripts/Makefile.in
+++ b/scripts/Makefile.in
@@ -513,7 +513,7 @@ nobase_dist_perllib_DATA = \
 # Keep it even if empty to have man3dir correctly set
 man3_MANS = 
 do_perl_subst = $(AM_V_GEN) \
-		sed -e "s:^\#![[:space:]]*/usr/bin/perl:\#!$(PERL):" \
+		sed -e "s:^\#![[:space:]]*/usr/bin/perl:\#!$(PERL) -I$(PERL_LIBDIR):" \
 		    -e "s:\$$CONFDIR[[:space:]]*=[[:space:]]*['\"][^'\"]*['\"]:\$$CONFDIR='$(pkgconfdir)':" \
 		    -e "s:\$$ADMINDIR[[:space:]]*=[[:space:]]*['\"][^'\"]*['\"]:\$$ADMINDIR='$(admindir)':" \
 		    -e "s:\$$LIBDIR[[:space:]]*=[[:space:]]*['\"][^'\"]*['\"]:\$$LIBDIR='$(pkglibdir)':" \