From: Paolo Bonzini <pbonzini@redhat.com>
Date: Wed, 2 Nov 2016 19:46:13 +0000 (+0100)
Subject: rules.mak: add more rules to avoid chaining
X-Git-Tag: v2.9.0-rc0~175^2~18
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a273f4cedf011af535ff3757c3a93e7134c198da;p=thirdparty%2Fqemu.git

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>
---

diff --git a/Makefile.target b/Makefile.target
index 6689e31f17f..8ae82cb3112 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -76,6 +76,7 @@ $(QEMU_PROG)-simpletrace.stp: $(BUILD_DIR)/trace-events-all
 else
 stap:
 endif
+.PHONY: stap
 
 all: $(PROGS) stap
 
diff --git a/rules.mak b/rules.mak
index c69863fd392..ce9e7e6ffe5 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: