am: Work around old automake version.

They don't have AM_DEFAULT_VERBOSITY.

diff --git a/Makefile.am b/Makefile.am
index b90bc37e9be35c8a64b0829178084daba03fbf9a..534536b1c0d41578e3098c6f304078a0211b4e9f 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -4,8 +4,8 @@
 
 # Pass --quiet to make when we are not verbose.
 AM_MAKEFLAGS = $(makesilentflags_$(V))
-makesilentflags_ = $(makesilentflags_$(AM_DEFAULT_VERBOSITY))
-makesilentflags_0 = --quiet
+makesilentflags_ = $(makesilentflags__$(AM_DEFAULT_VERBOSITY))
+makesilentflags__0 = --quiet
 
 # SUBDIRS stores the directories where a "make" is required when building
 # something. DIST_SUBDIRS stores the directories where nothing is built but