From: Andrew Tridgell <tridge@samba.org>
Date: Mon, 1 Apr 2002 03:20:51 +0000 (+0200)
Subject: more unifier docs
X-Git-Tag: v1.3~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=985ef02f058049b5e0e0f286ea2f65a8a634f9fe;p=thirdparty%2Fccache.git

more unifier docs
---

diff --git a/unify.c b/unify.c
index 8cd465e7a..1c3143ce6 100644
--- a/unify.c
+++ b/unify.c
@@ -18,8 +18,16 @@
 /*
   C/C++ unifier
 
-  the idea is that changes that don't affect the resulting C code should not change
-  the hash
+  the idea is that changes that don't affect the resulting C code
+  should not change the hash. This is achieved by folding white-space
+  and other non-semantic fluff in the input into a single unified format.
+
+  This unifier was design to match the output of the unifier in
+  compilercache, which is flex based. The major difference is that
+  this unifier is much faster (about 2x) and more forgiving of
+  syntactic errors. Continuing on syntactic errors is important to
+  cope with C/C++ extensions in the local compiler (for example,
+  inline assembly systems).  
 */
 
 #include "ccache.h"