CG: Add LILYPOND_BUILD_DIR environment variable, fix issues 2604 and 2524.

[lilypond.git] / Documentation / contributor / introduction.itexi

diff --git a/Documentation/contributor/introduction.itexi b/Documentation/contributor/introduction.itexi
index 0883a1a81603c9f987823905c3a043f261b7bc3d..56b9cb40bebc174e72596f34b628a7196ca06427 100644 (file)
--- a/Documentation/contributor/introduction.itexi
+++ b/Documentation/contributor/introduction.itexi
@@ -112,6 +112,10 @@ hosted by GNU savannah.
 @uref{http://git.savannah.gnu.org/gitweb/?p=lilypond.git}
 @end example
 
+@item @strong{environment variables}:
+many maintenance scripts, and many instructions in this guide rely on
+predefined @ref{Environment variables}.
+
 @item @strong{mailing lists}:
 given on @rweb{Contacts}.