Unforbid the port for the use of general FreeBSD public.

Compile perl with BSDPAN support, both -current and -stable.  The
version of BSDPAN used here coincides accidentally with the one present
in the -current system perl, but is installed in a different place.

Provide a script, use.perl, to facilitate switching of the perl used by
default between the system perl and this port.  Also print a message
describing the usage of use.perl (this works for the port and for the
package built from it).  The switching to the port version is done by
removing /usr/bin/perl and /usr/bin/suidperl (they both have link count
>1, so this is reversible), and making them to be symlinks to the
corresponding binaries in $PREFIX/bin.  Also, assignments of the correct
values of PERL_VER, PERL_VERSION, and PERL_ARCH are appended to
/etc/make.conf.  Last, NOPERL=yes is appended to /etc/make.conf, so that
the changes made will survive system upgrades from source.  The
switching to the system version is more or less a reverse of the process
described above.

Set and use PERL_ARCH which is independed from the one used by the
system perl.

Fix the port for post-malloc.h -current.

Fix a small bogon when PREFIX was used in pkg-install (PKG_PREFIX should
have been used instead).

Reviewed by:	markm, joe

1 files changed, 82 insertions, 0 deletions

diff --git a/lang/perl5.6/files/use.perl b/lang/perl5.6/files/use.perl
new file mode 100644
index 000000000000..4bd8fdef66d1
--- /dev/null
+++ b/lang/perl5.6/files/use.perl
@@ -0,0 +1,82 @@
+#! /usr/bin/perl5 -w
+# $FreeBSD$
+use strict;
+
+# XXX what to do with perldoc, pelbug, perlcc ??
+
+sub usage
+{
+	print STDERR <<EOF;
+Usage:
+  $0 port       -> /usr/bin/perl is the perl5 port
+  $0 system     -> /usr/bin/perl is the system perl
+EOF
+	exit 2;
+}
+
+@ARGV == 1 or usage();
+if ($ARGV[0] eq 'port') {
+	switch_to_port();
+} elsif ($ARGV[0] eq 'system') {
+	switch_to_system();
+} else {
+	usage();
+}
+exit 0;
+
+sub switch_to_system
+{
+	my $port_perl = '%%PREFIX%%/bin/perl';
+	$port_perl =~ tr|/|/|s;
+
+	# protect against cases where people use PREFIX=/usr
+	if ($port_perl ne '/usr/bin/perl') {
+		unlink '/usr/bin/perl', '/usr/bin/suidperl',
+			'/usr/bin/perl%%PERL_VERSION%%';
+
+		link '/usr/bin/perl5', '/usr/bin/perl';
+		link '/usr/bin/sperl5', '/usr/bin/suidperl';
+	}
+
+	open MK, ">> /etc/make.conf" or die "/etc/make.conf: $!";
+	print MK <<EOF;
+# -- use.perl generated deltas -- #
+# Created: @{[scalar localtime]}
+# Setting to use base system perl:
+.undef PERL_VER
+.undef PERL_VERSION
+.undef PERL_ARCH
+.undef NOPERL
+
+EOF
+	close MK;
+}
+
+sub switch_to_port
+{
+	my $port_perl = '%%PREFIX%%/bin/perl';
+	$port_perl =~ tr|/|/|s;
+
+	# protect against cases where people use PREFIX=/usr
+	if ($port_perl ne '/usr/bin/perl') {
+		unlink '/usr/bin/perl', '/usr/bin/suidperl',
+			'/usr/bin/perl%%PERL_VERSION%%';
+
+		symlink '%%PREFIX%%/bin/perl', '/usr/bin/perl';
+		symlink '%%PREFIX%%/bin/suidperl', '/usr/bin/suidperl';
+		symlink '%%PREFIX%%/bin/perl', '/usr/bin/perl%%PERL_VERSION%%';
+	}
+
+	open MK, ">> /etc/make.conf" or die "/etc/make.conf: $!";
+	print MK <<EOF;
+# -- use.perl generated deltas -- #
+# Created: @{[scalar localtime]}
+# Setting to use base perl from ports:
+PERL_VER=%%PERL_VER%%
+PERL_VERSION=%%PERL_VERSION%%
+PERL_ARCH=%%PERL_ARCH%%
+NOPERL=yo
+
+EOF
+	close MK;
+}