bazel: use libxml2 from the BCR

MODULE.bazel

@@ -33,6 +33,7 @@ single_version_override(
     ],
 )
 
+bazel_dep(name = "libxml2", version = "2.15.2")
 bazel_dep(name = "lz4", version = "1.9.4")
 bazel_dep(name = "platforms", version = "1.0.0")
 bazel_dep(name = "protobuf", version = "33.5")
@@ -99,7 +100,6 @@ use_repo(non_module_dependencies, "jsoncons")
 use_repo(non_module_dependencies, "krb5")
 use_repo(non_module_dependencies, "libpciaccess")
 use_repo(non_module_dependencies, "libprotobuf_mutator")
-use_repo(non_module_dependencies, "libxml2")
 use_repo(non_module_dependencies, "lksctp")
 use_repo(non_module_dependencies, "openssl")
 use_repo(non_module_dependencies, "openssl-fips")

bazel/repositories.bzl

@@ -100,14 +100,6 @@ def data_dependency():
         url = "https://github.com/google/libprotobuf-mutator/archive/dc4ced337a9fb4047e2dc727268fbac55ca82f73.zip",
     )
 
-    http_archive(
-        name = "libxml2",
-        build_file = "//bazel/thirdparty:libxml2.BUILD",
-        sha256 = "2769234c4fe2fab9b0b043e891c2af0f1ae51c8d4b94799472981e676ed8009e",
-        strip_prefix = "libxml2-2.15.2",
-        url = "https://vectorized-public.s3.us-west-2.amazonaws.com/dependencies/libxml2-v2.15.2.tar.gz",
-    )
-
     http_archive(
         name = "lksctp",
         build_file = "//bazel/thirdparty:lksctp.BUILD",

src/v/cloud_storage_clients/BUILD

@@ -70,7 +70,6 @@ redpanda_cc_library(
         "//src/v/ssx:sformat",
         "//src/v/ssx:watchdog",
         "//src/v/strings:string_switch",
-        "//src/v/thirdparty/libxml2",
         "//src/v/utils:base64",
         "//src/v/utils:log_hist",
         "//src/v/utils:named_type",
@@ -82,6 +81,7 @@ redpanda_cc_library(
         "@boost//:beast",
         "@boost//:lexical_cast",
         "@boost//:property_tree",
+        "@libxml2",
         "@rapidjson",
         "@seastar",
     ],

src/v/cloud_storage_clients/xml_sax_parser.h

@@ -12,10 +12,11 @@
 #pragma once
 
 #include "cloud_storage_clients/client.h"
-#include "thirdparty/libxml2/parser.h"
 
 #include <seastar/core/iostream.hh>
 
+#include <libxml/parser.h>
+
 namespace cloud_storage_clients {
 
 class xml_parse_exception : public std::exception {

src/v/test_utils/BUILD

@@ -57,13 +57,13 @@ redpanda_test_cc_library(
         "boost_result_redirect.cc",
     ],
     implementation_deps = [
-        "//src/v/thirdparty/libxml2",
         "@abseil-cpp//absl/strings",
         "@abseil-cpp//absl/strings:str_format",
         "@abseil-cpp//absl/time",
         "@boost//:config",
         "@boost//:core",
         "@boost//:test",
+        "@libxml2",
     ],
     visibility = ["//visibility:public"],
 )

src/v/test_utils/boost_result_redirect.cc

@@ -10,12 +10,12 @@
 #include "absl/strings/str_format.h"
 #include "absl/strings/str_replace.h"
 #include "absl/time/time.h"
-#include "thirdparty/libxml2/xmlwriter.h"
 
 #include <boost/test/results_collector.hpp>
 #include <boost/test/tree/traverse.hpp>
 #include <boost/test/unit_test.hpp>
 #include <boost/test/unit_test_suite.hpp>
+#include <libxml/xmlwriter.h>
 
 #include <stdexcept>