From: Khem Raj <raj.khem@gmail.com>
Date: Sun, 22 Jun 2026 22:00:00 -0700
Subject: [PATCH] Makefile.PL: link against system libxml2 without Alien::Libxml2

XML::LibXML 2.0200+ switched its build system to use Alien::Libxml2 (via
Alien::Base::Wrapper) to locate libxml2. That Perl module is not packaged
in OpenEmbedded and pulls in the whole Alien::Build stack, so instead query
the target libxml2 directly through pkg-config, which is already wired up to
the recipe sysroot. libxml2 is listed in DEPENDS, so it is guaranteed to be
present at build time.

Upstream-Status: Inappropriate [oe-specific cross-compile]

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -17,7 +17,7 @@
 
 require 5.008001;
 
-use Alien::Base::Wrapper qw( Alien::Libxml2 );
+# OE: avoid Alien::Libxml2; flags for target libxml2 come from pkg-config below
 use ExtUtils::MakeMaker;
 use Config;
 
@@ -71,7 +71,14 @@
   DEFINE  => '-DHAVE_UTF8',
   OBJECT  => '$(O_FILES)',
 );
-my %xsbuild = Alien::Base::Wrapper->mm_args;  # Might contain a definition of DEFINE, must thus concatenate.
+my %xsbuild;
+{
+  # OE cross build: locate the target libxml2 via pkg-config instead of Alien.
+  chomp(my $cflags = `pkg-config --cflags libxml-2.0`);
+  chomp(my $libs   = `pkg-config --libs libxml-2.0`);
+  die "pkg-config failed for libxml-2.0\n" if $? != 0;
+  %xsbuild = ( INC => $cflags, LIBS => "$libs -lz -lm" );
+}
 while (my ($k, $v) = each %xsbuild_concat) {
   my $base_val = $xsbuild{$k};
   $xsbuild{$k} = (defined($base_val) ? ($base_val . ' ' . $v) : $v);