Integrating the GCC-XML extension by hand.

All of the changes need to be made in the ~/gcc/gcc/cp directory. These instructions have been written to work with gcc 3.0.4.

In Make-lang.in:

Add "cp/xml.o" to the CXX_OBJS list.

Below the line

cp/mangle.o: cp/mangle.c $(CXX_TREE_H) toplev.h

add the line

cp/xml.o: cp/xml.c $(CXX_TREE_H) toplev.h

In semantics.c: Find the finish_translation_unit function and add these lines to the end of it:
```
/* Do XML output if enabled.  */
if (flag_xml)
  do_xml_output (flag_xml);
```

In decl2.c:

Add the lines

/* Filename for xml dump of translation unit.  */

const char* flag_xml = 0;

/* Start locations for dump of translation unit.  */

const char* flag_xml_start = 0;

just above the lang_f_options[] table definition.

Add

      else if ((option_value
                = skip_leading_substring (p, "xml=")))
        {
        if (*option_value == '\0')
          error ("no file specified with -fxml");
        else
          flag_xml = option_value;
        }
      else if ((option_value
                = skip_leading_substring (p, "xml-start=")))
      {
        if (*option_value == '\0')
          error ("no location specified with -fxml-start");
        else
          flag_xml_start = option_value;
      }

in cxx_decode_option, just above these lines:

      else if (dump_switch_p (p))
        ;

In lang-options.h: Add the lines

  { "-fxml=",
    N_("Enable XML output to a file (use with -fsyntax-only)") },
  { "-fno-xml", "" },
  { "-fxml-start=", "Specify start locations for XML dump (use with -fxml)" },

to the bottom of the "-f" part of the list, just after the { "-fno-xref", "" }, line.

In cp-tree.h:

Add the lines

/* Filename for xml dump of translation unit.  */
extern const char* flag_xml;

/* Start locations for dump of translation unit.  */
extern const char* flag_xml_start;

/* Tell xml.c what version of GCC is being built.  Format is 0xMMmmpp,
   where MM is the major version number, mm is the minor version
   number, and pp is the patch level.
   Examples:  gcc 3.0.4 = 0x030004
              gcc 3.2.0 = 0x030200 */
#define GCC_XML_GCC_VERSION 0x030004

/* in xml.c */
extern void do_xml_output                       PARAMS ((const char *));

at the bottom of the file, just above the /* -- end of C++ */ comment (before #endif).