rules.mak: add more rules to avoid chaining

Really rule chaining is not a particularly expensive task, since
GNU Make caches the directory listing.  However it is easy to
avoid it for most files and for phony targets (one was missing).

After this patch, only "Makefile", "scripts/hxtool" and
"scripts/create_config" attempt to use chained rules.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/rules.mak b/rules.mak
index c69863fd39..ce9e7e6ffe 100644
--- a/rules.mak
+++ b/rules.mak
@@ -7,6 +7,10 @@ MAKEFLAGS += -rR
 
 # Files with this suffixes are final, don't try to generate them
 # using implicit rules
+%/trace-events:
+%.hx:
+%.py:
+%.objs:
 %.d:
 %.h:
 %.c: