../gupnp-av-0.14.1/libgupnp-av/gupnp-didl-lite-parser.c:233:15: error: 'xmlRecoverMemory' is deprecated [-Werror,-Wdeprecated-declarations]
        doc = xmlRecoverMemory (didl, strlen (didl));
              ^
/usr/local/include/libxml2/libxml/parser.h:870:1: note: 'xmlRecoverMemory' has been explicitly marked deprecated here
XML_DEPRECATED
^
/usr/local/include/libxml2/libxml/xmlversion.h:447:43: note: expanded from macro 'XML_DEPRECATED'
#    define XML_DEPRECATED __attribute__((deprecated))
                                          ^
1 error generated.

Index: meson.build
--- meson.build.orig
+++ meson.build
@@ -71,7 +71,6 @@ endif
 
 common_cflags = cc.get_supported_arguments(test_cflags)
 
-add_project_arguments(cc.get_supported_arguments('-Werror=deprecated-declarations'), language: 'c')
 conf = configuration_data()
 conf.set_quoted('DATADIR', join_paths(get_option('prefix'), get_option('datadir'), 'gupnp-av'))
 conf.set_quoted('VERSION', meson.project_version())