Add Doxygen support to GDB

gdb/doc/Doxyfile-gdb-xref.in

@@ -0,0 +1,44 @@
+# Copyright (C) 2014 Free Software Foundation, Inc.
+
+# Doxygen file for a full GDB cross-reference.
+# This file is part of GDB.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+@INCLUDE = Doxyfile-base
+
+PROJECT_NAME = "GDB (xrefs)"
+
+# Get all the sources.
+
+INPUT = @srcdir@/../ ../
+
+HTML_OUTPUT = ./doxy/gdb-xref
+
+# We want to use the XML for analysis and statistics.
+
+GENERATE_XML = YES
+XML_OUTPUT = ./doxy/xml
+
+# Include everything possible.
+
+EXTRACT_PRIVATE = YES
+EXTRACT_STATIC = YES
+
+# Build a full cross-reference.
+
+REFERENCED_BY_RELATION = YES
+REFERENCES_RELATION = YES
+REFERENCES_LINK_SOURCE = NO
+