[PATCH 09/13] build: Add 'EMACS' silent rule.

[Mathieu Lirzin]

* Makefile.am (AM_V_EMACS, AM_V_EMACS_, AM_V_EMACS_0): New variables.
* emacs.am [HAVE_EMACS] ($(AUTOLOADS)): Use $(AM_V_EMACS).
---
 Makefile.am | 4 ++++
 emacs.am    | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index 4c71a12..d29a49d 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -485,3 +485,7 @@ AM_V_DOT = $(AM_V_DOT_$(V))
 AM_V_DOT_ = $(AM_V_DOT_$(AM_DEFAULT_VERBOSITY))
 AM_V_DOT_0 = @echo "  DOT     " $@;
 
+AM_V_EMACS = $(AM_V_EMACS_$(V))
+AM_V_EMACS_ = $(AM_V_EMACS_$(AM_DEFAULT_VERBOSITY))
+AM_V_EMACS_0 = @echo "  EMACS   " $@;
+
diff --git a/emacs.am b/emacs.am
index d0d4dfb..0342574 100644
--- a/emacs.am
+++ b/emacs.am
@@ -1,5 +1,6 @@
 # GNU Guix --- Functional package management for GNU
 # Copyright © 2014, 2015 Alex Kost <address@hidden>
+# Copyright © 2016 Mathieu Lirzin <address@hidden>
 #
 # This file is part of GNU Guix.
 #
@@ -59,7 +60,7 @@ dist_lisp_DATA =                              \
 nodist_lisp_DATA = emacs/guix-config.el
 
 $(AUTOLOADS): $(ELFILES)
-       $(EMACS) --batch --eval                                         \
+       $(AM_V_EMACS)$(EMACS) --batch --eval                            \
          "(let ((backup-inhibited t)                                   \
                 (generated-autoload-file                               \
                  (expand-file-name \"$(AUTOLOADS)\" \"$(srcdir)\")))   \