[22.14.0] fails to build with libxml2 2.12.9 & GCC 14 (due to -Werror)

[tgurr]

Expected behavior

Do not fail to build.

Actual behavior

[ 70%] Building C object util/CMakeFiles/gvm_util_shared.dir/xmlutils.c.o
cd /var/tmp/paludis/build/net-analyzer-gvm-libs-22.14.0/work/build/util && /usr/bin/x86_64-pc-linux-gnu-cc -DGVM_LIBS_VERSION=\"22.14.0\" -DHAVE_MQTT=1 -DREDIS_SOCKET_PATH=\"/tmp/redis.sock\" -Dgvm_util_shared_EXPORTS -I/usr/x86_64-pc-linux-gnu/include/glib-2.0 -I/usr/x86_64-pc-linux-gnu/lib/glib-2.0/include -I/usr/x86_64-pc-linux-gnu/include/libxml2 -march=native -O2 -pipe      -std=c11     -Wall     -Wextra     -Werror     -Wpedantic     -Wmissing-prototypes     -Wshadow     -Wsequence-point     -D_ISOC11_SOURCE     -D_DEFAULT_SOURCE -O3 -DNDEBUG -Wformat -Wformat-security -D_FORTIFY_SOURCE=2 -fstack-protector  -std=gnu11 -fPIC -fdiagnostics-color=always -MD -MT util/CMakeFiles/gvm_util_shared.dir/xmlutils.c.o -MF CMakeFiles/gvm_util_shared.dir/xmlutils.c.o.d -o CMakeFiles/gvm_util_shared.dir/xmlutils.c.o -c /var/tmp/paludis/build/net-analyzer-gvm-libs-22.14.0/work/gvm-libs-22.14.0/util/xmlutils.c
/var/tmp/paludis/build/net-analyzer-gvm-libs-22.14.0/work/gvm-libs-22.14.0/util/xmlutils.c: In function 'xml_file_iterator_next':
/var/tmp/paludis/build/net-analyzer-gvm-libs-22.14.0/work/gvm-libs-22.14.0/util/xmlutils.c:3034:29: error: assignment discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
 3034 |                   xml_error = xmlCtxtGetLastError (iterator->parser_ctxt);
      |

Steps to reproduce

1. have libxml2 2.12.9 installed
2. use GCC 14
3. try to build gvm-libs 22.14.0

GVM versions

Environment

Operating system: Exherbo Linux

Installation method / source: packages (source-based distribution)

Logfiles

Complete build log: gvm-libs-22.14.0_build.log

Additional notes

Removing -Werror with e.g. sed -e '/-Werror/d' -i CMakeLists.txt as a workaround allows the build to succeed, maybe think about adding a CMake toggle for it as often seen in other projects (-DENABLE_WERROR) or something alike.