build-sys: silence make by default or V=0

Move generic make flags in MAKEFLAGS (SUBDIR_MAKEFLAGS is more qemu specific).

Use --quiet to silence make 'is up to date' message.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Tested-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20180104160523.22995-3-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/rules.mak b/rules.mak
index 6e943335f3..5fb4951561 100644
--- a/rules.mak
+++ b/rules.mak
@@ -131,6 +131,8 @@ modules:
 # If called with only a single argument, will print nothing in quiet mode.
 quiet-command = $(if $(V),$1,$(if $(2),@printf "  %-7s %s\n" $2 $3 && $1, @$1))
 
+MAKEFLAGS += $(if $(V),,--no-print-directory --quiet)
+
 # cc-option
 # Usage: CFLAGS+=$(call cc-option, -falign-functions=0, -malign-functions=0)