doxygen: Add doxygen file and build infrastructure for gbm
diff --git a/doxygen/gbm.doxy b/doxygen/gbm.doxy
new file mode 100644
index 0000000..37e4aa0
--- /dev/null
+++ b/doxygen/gbm.doxy
@@ -0,0 +1,48 @@
+# Doxyfile 0.1
+
+@INCLUDE = common.doxy
+
+#---------------------------------------------------------------------------
+# General configuration options
+#---------------------------------------------------------------------------
+PROJECT_NAME = "Generic Buffer Manager (gbm)"
+#---------------------------------------------------------------------------
+# configuration options related to the input files
+#---------------------------------------------------------------------------
+INPUT = ../src/gbm/main
+FILE_PATTERNS = *.c *.h
+RECURSIVE = NO
+EXCLUDE =
+EXCLUDE_PATTERNS =
+EXAMPLE_PATH =
+EXAMPLE_PATTERNS =
+EXAMPLE_RECURSIVE = NO
+IMAGE_PATH =
+INPUT_FILTER =
+FILTER_SOURCE_FILES = NO
+#---------------------------------------------------------------------------
+# configuration options related to the HTML output
+#---------------------------------------------------------------------------
+HTML_OUTPUT = gbm
+#---------------------------------------------------------------------------
+# Configuration options related to the preprocessor
+#---------------------------------------------------------------------------
+ENABLE_PREPROCESSING = YES
+MACRO_EXPANSION = NO
+EXPAND_ONLY_PREDEF = NO
+SEARCH_INCLUDES = YES
+INCLUDE_PATH = ../include/
+INCLUDE_FILE_PATTERNS =
+PREDEFINED =
+EXPAND_AS_DEFINED =
+SKIP_FUNCTION_MACROS = YES
+#---------------------------------------------------------------------------
+# Configuration::addtions related to external references
+#---------------------------------------------------------------------------
+TAGFILES = main.tag=../core \
+ math.tag=../math \
+ tnl_dd.tag=../tnl_dd \
+ swrast_setup.tag=../gbm_setup \
+ tnl.tag=../tnl \
+ vbo.tag=vbo
+GENERATE_TAGFILE = gbm.tag