ci: Add job for perl-XML-LibXML

.gitlab-ci.yml

@@ -304,3 +304,8 @@ downstream-nokogiri:
   image: ghcr.io/sparklemotion/nokogiri-test:upstream-libxml
   script:
     - .gitlab-ci/downstream-nokogiri.sh
+
+downstream-perl:
+  image: registry.gitlab.gnome.org/gnome/libxml2
+  script:
+    - sh .gitlab-ci/downstream-perl.sh

.gitlab-ci/Dockerfile

@@ -1,7 +1,7 @@
 # The image is also used for libxslt, that's why we need git and
 # libgcrypt-dev.
 
-FROM ubuntu:23.10
+FROM ubuntu:24.04
 ENV DEBIAN_FRONTEND=noninteractive
 RUN apt-get update && \
     apt-get upgrade -y && \
@@ -14,3 +14,19 @@ RUN apt-get update && \
         cmake meson
 WORKDIR /tests
 RUN curl https://www.w3.org/XML/Test/xmlts20080827.tar.gz |tar xz
+
+# XML::LibXML uses Alien::Libxml2 which has a huge dependency chain.
+# We try to install most dependencies with apt. We also require
+# libxml2-dev to stop Alien::Libxml2 from downloading and building
+# libxml2 on its own.
+RUN apt-get install -y --no-install-recommends \
+        libperl-dev libxml2-dev cpanminus \
+        libalien-build-perl \
+        libio-socket-ssl-perl \
+        libsort-versions-perl \
+        liburi-perl \
+        libxml-namespacesupport-perl  \
+        libxml-sax-perl \
+        libyaml-perl
+RUN cpanm -n Alien::Libxml2
+RUN apt-get remove -y libxml2-dev

.gitlab-ci/downstream-perl.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+set -e
+
+sh autogen.sh --without-python
+make -j$(nproc)
+
+srcdir=$(pwd)
+incdir=$srcdir/include
+libdir=$srcdir/.libs
+
+curl -L https://cpan.metacpan.org/authors/id/S/SH/SHLOMIF/XML-LibXML-2.0210.tar.gz |tar xz
+cd XML-LibXML-2.0210
+
+perl Makefile.PL INC="-I$incdir" LIBS="-L$libdir -lxml2"
+make
+# Known to fail
+LD_LIBRARY_PATH=$libdir make test || true