Clean up and document our hacks for building BSD source.
Change-Id: Ic591e22fa5b363bb68376b9f25814c0e5bd83fbf
diff --git a/HACKING.txt b/HACKING.txt
index 9f45903..fb93b5a 100644
--- a/HACKING.txt
+++ b/HACKING.txt
@@ -97,8 +97,14 @@
upstream-openbsd/
# These directories contain unmolested upstream source. Any time we can
# just use a BSD implementation of something unmodified, we should.
- # See files like netbsd-compat.h for various ways in which we manage to
- # build BSD source in bionic.
+ # The structure under these directories mimics the upstream tree,
+ # but there's also...
+ android/
+ include/
+ # This is where we keep the hacks necessary to build BSD source
+ # in our world. The *-compat.h files are automatically included
+ # using -include, but we also provide equivalents for missing
+ # header/source files needed by the BSD implementation.
bionic/
# This is the biggest mess. The C++ files are files we own, typically