Error compiling native extension on Intel Mac

[queue-tip]

@cfis after you addressed #200 you asked if I could compile against the master branch from GitHub. It definitely got further along with your most recent fix but is still having issues.

The next one is with ruby_xml_html_parser_context.c. I would be happy to keep checking against master before you release again.

From my Gemfile:
gem "libxml-ruby", :github => 'xml4r/libxml-ruby', :branch => 'master'

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /Users/user1/.asdf/installs/ruby/3.0.2/lib/ruby/gems/3.0.0/bundler/gems/libxml-ruby-02305a71ecf3/ext/libxml
/Users/user1/.asdf/installs/ruby/3.0.2/bin/ruby -I /Users/user1/.asdf/installs/ruby/3.0.2/lib/ruby/3.0.0 -r ./siteconf20230501-91990-6kqydd.rb
extconf.rb --with-xml2-config\=/usr/local/Cellar/libxml2/2.10.4//bin/xml2-config
checking for libxml/xmlversion.h in /opt/include/libxml2,/opt/local/include/libxml2,/usr/local/include/libxml2,/usr/include/libxml2,/usr/local/include... yes
checking for xmlParseDoc() in -lxml2... yes
creating extconf.h
creating Makefile

current directory: /Users/user1/.asdf/installs/ruby/3.0.2/lib/ruby/gems/3.0.0/bundler/gems/libxml-ruby-02305a71ecf3/ext/libxml
make DESTDIR\= clean

current directory: /Users/user1/.asdf/installs/ruby/3.0.2/lib/ruby/gems/3.0.0/bundler/gems/libxml-ruby-02305a71ecf3/ext/libxml
make DESTDIR\=
compiling libxml.c
compiling ruby_xml.c
compiling ruby_xml_attr.c
compiling ruby_xml_attr_decl.c
compiling ruby_xml_attributes.c
compiling ruby_xml_cbg.c
compiling ruby_xml_document.c
compiling ruby_xml_dtd.c
compiling ruby_xml_encoding.c
compiling ruby_xml_error.c
compiling ruby_xml_html_parser.c
compiling ruby_xml_html_parser_context.c
ruby_xml_html_parser_context.c:246:3: warning: 'htmlDefaultSAXHandlerInit' is deprecated [-Wdeprecated-declarations]
  htmlDefaultSAXHandlerInit();
  ^
/usr/local/Cellar/libxml2/2.10.4/include/libxml2/libxml/SAX2.h:162:1: note: 'htmlDefaultSAXHandlerInit' has been explicitly marked deprecated here
XML_DEPRECATED
^
/usr/local/Cellar/libxml2/2.10.4/include/libxml2/libxml/xmlversion.h:464:43: note: expanded from macro 'XML_DEPRECATED'
#    define XML_DEPRECATED __attribute__((deprecated))
                                          ^
1 warning generated.
compiling ruby_xml_html_parser_options.c
compiling ruby_xml_input_cbg.c
ruby_xml_input_cbg.c:185:3: error: incompatible function pointer types passing 'VALUE (void)' (aka 'unsigned long (void)') to parameter of type 'VALUE
(*)(VALUE)' (aka 'unsigned long (*)(unsigned long)') [-Wincompatible-function-pointer-types]
  rb_define_singleton_method(cInputCallbacks, "register",
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/user1/.asdf/installs/ruby/3.0.2/include/ruby-3.0.0/ruby/internal/anyargs.h:307:143: note: expanded from macro 'rb_define_singleton_method'
#define rb_define_singleton_method(obj, mid, func, arity)   RBIMPL_ANYARGS_DISPATCH_rb_define_singleton_method((arity), (func))((obj), (mid), (func), (arity))
                                                                                                                                              ^~~~~~
/Users/user1/.asdf/installs/ruby/3.0.2/include/ruby-3.0.0/ruby/internal/anyargs.h:270:1: note: passing argument to parameter here
RBIMPL_ANYARGS_DECL(rb_define_singleton_method, VALUE, const char *)
^
/Users/user1/.asdf/installs/ruby/3.0.2/include/ruby-3.0.0/ruby/internal/anyargs.h:254:72: note: expanded from macro 'RBIMPL_ANYARGS_DECL'
RBIMPL_ANYARGS_ATTRSET(sym) static void sym ## _00(__VA_ARGS__, VALUE(*)(VALUE), int); \
                                                                       ^
1 error generated.
make: *** [ruby_xml_input_cbg.o] Error 1

make failed, exit code 2

Gem files will remain installed in /Users/user1/.asdf/installs/ruby/3.0.2/lib/ruby/gems/3.0.0/bundler/gems/libxml-ruby-02305a71ecf3 for inspection.
Results logged to
/Users/user1/.asdf/installs/ruby/3.0.2/lib/ruby/gems/3.0.0/bundler/gems/extensions/x86_64-darwin-22/3.0.0/libxml-ruby-02305a71ecf3/gem_make.out

An error occurred while installing libxml-ruby (4.1.0), and Bundler cannot continue.

In Gemfile:
  libxml-ruby

[cfis]

Yup - thanks. All warnings are now fixed except:

ruby_xml_html_parser_context.c:246:3: warning: ‘htmlDefaultSAXHandlerInit’ is deprecated [-Wdeprecated-declarations]
  246 |   htmlDefaultSAXHandlerInit();

[queue-tip]

I verified the gem installs now. Thank you for fixing this!