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+From: Justus Winter <4winter@informatik.uni-hamburg.de>\r
+To: notmuch@notmuchmail.org\r
+Subject: [PATCH 3/6] Extend compat/README\r
+Date: Mon, 24 Sep 2012 17:21:17 +0200\r
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+\r
+Signed-off-by: Justus Winter <4winter@informatik.uni-hamburg.de>\r
+---\r
+ compat/README | 7 ++++++-\r
+ 1 file changed, 6 insertions(+), 1 deletion(-)\r
+\r
+diff --git a/compat/README b/compat/README\r
+index 38e2e14..12aacf4 100644\r
+--- a/compat/README\r
++++ b/compat/README\r
+@@ -1,6 +1,6 @@\r
+ notmuch/compat\r
+ \r
+-This directory consists of two things:\r
++This directory consists of three things:\r
+ \r
+ 1. Small programs used by the notmuch configure script to test for the\r
+ availability of certain system features, (library functions, etc.).\r
+@@ -14,3 +14,8 @@ This directory consists of two things:\r
+ \r
+ The compilation of these files is made conditional on the output of\r
+ the test programs from [1].\r
++\r
++3. Macro definitions abstracting compiler differences (e.g. function\r
++ attributes).\r
++\r
++ For example: function-attributes.h\r
+-- \r
+1.7.10.4\r
+\r