perl: Add dyanloader build hack

Patch perl to allow builds to work where a native perl running against target modules
attempts to load a dynamic binary module. We assume that a native version of the
module exists as it would for the target and perform an appropriate path
substitution.

(From OE-Core rev: b5ea12fec329fe419bc3672ed1e1d5733ff2a9d3)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/perl/perl-5.14.2/dynaloaderhack.patch

@@ -0,0 +1,23 @@
+Hack the dynamic module loader so that we use native modules since we can't load
+the target ones.
+
+Upstream-Status: Inappropriate
+
+RP
+2013/01/13
+
+Index: perl-5.14.2/ext/DynaLoader/DynaLoader_pm.PL
+===================================================================
+--- perl-5.14.2.orig/ext/DynaLoader/DynaLoader_pm.PL	2011-09-19 13:18:22.000000000 +0000
++++ perl-5.14.2/ext/DynaLoader/DynaLoader_pm.PL	2013-01-19 16:09:51.020584945 +0000
+@@ -310,6 +310,10 @@
+     foreach (@INC) {
+ 	<<$^O-eq-VMS>>chop($_ = VMS::Filespec::unixpath($_));<</$^O-eq-VMS>>
+ 	    my $dir = "$_/auto/$modpname";
++
++	if (defined $ENV{PERL_LIB} and defined $ENV{PERLHOSTLIB}) {
++	    $dir =~ s/$ENV{PERL_LIB}/$ENV{PERLHOSTLIB}/g;
++	}
+ 	
+ 	next unless -d $dir; # skip over uninteresting directories
+ 	

meta/recipes-devtools/perl/perl-native_5.14.2.bb

@@ -19,6 +19,7 @@ SRC_URI = "http://www.cpan.org/src/5.0/perl-${PV}.tar.gz \
            file://native-perlinc.patch \
            file://MM_Unix.pm.patch \
            file://debian/errno_ver.diff \
+           file://dynaloaderhack.patch \
            file://perl-build-in-t-dir.patch"
 
 SRC_URI[md5sum] = "3306fbaf976dcebdcd49b2ac0be00eb9"

meta/recipes-devtools/perl/perl_5.14.2.bb

@@ -67,6 +67,7 @@ SRC_URI = "http://www.cpan.org/src/5.0/perl-${PV}.tar.gz \
 	file://fix_bad_rpath.patch \
 	file://perl-build-in-t-dir.patch \
 	file://perl-archlib-exp.patch \
+	file://dynaloaderhack.patch \
 	\
         file://config.sh \
         file://config.sh-32 \