use FLAC__NO_DLL define to keep the DLL macros from cluttering the docs
diff --git a/doc/Doxyfile b/doc/Doxyfile
index e862979..dc739e7 100644
--- a/doc/Doxyfile
+++ b/doc/Doxyfile
@@ -748,7 +748,7 @@
 # or name=definition (no spaces). If the definition and the = are 
 # omitted =1 is assumed.
 
-PREDEFINED             = unix
+PREDEFINED             = FLAC__NO_DLL
 
 # If the MACRO_EXPANSION and EXPAND_PREDEF_ONLY tags are set to YES then 
 # this tag can be used to specify a list of macro names that should be expanded.