CG: Review info about the build system.

diff --git a/Documentation/contributor/build-notes.itexi b/Documentation/contributor/build-notes.itexi
index bf779982290e370c48f89f3c5ecb92731b12ef02..a1e258cc91a369eb8b65d06c70a8e2efe411f3d6 100644 (file)
--- a/Documentation/contributor/build-notes.itexi
+++ b/Documentation/contributor/build-notes.itexi
@@ -117,9 +117,11 @@ include $(configure-srcdir)/GNUmakefile.in
 
 The variable @code{depth} is used throughout the make system to
 track how far down the directory structure the make is.  The first
-include sets lots of variables but doesn't "do" anything.  The
-second runs the file @file{GNUmakefile.in} from the top level
-source directory.
+include sets lots of variables but doesn't "do" anything.  Default
+values for these variables are automatically detected at the
+./configure step, which creates the file @file{config.make}.
+The second include runs the file @file{GNUmakefile.in} from
+the top level source directory.
 
 This sets another load of variables, and then includes (i.e.
 immediately runs) @file{stepmake.make} from the @file{make}
@@ -957,6 +959,7 @@ described to some extent at
 
 The file @file{lily-bib.bst} also has fairly extensive commenting.
 
+
 @node Website build
 @section Website build