[PATCH] buildsys: skip compiler flag checking for clean targets

[Mike Frysinger]

As suggested by Bernhard, there is no point in evaluating the compiler's
flag availability when cleaning, so skip things in that case.  If there
are variables that change targets based on the flags, then things are
already broken and need fixing independently.

Signed-off-by: Mike Frysinger <vapier at gentoo.org>
---
 Rules.mak |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/Rules.mak b/Rules.mak
index 2909d1b..032193e 100644
--- a/Rules.mak
+++ b/Rules.mak
@@ -176,11 +176,13 @@ check_ld=$(shell \
 # Use variable indirection here so that we can have variable
 # names with fun chars in them like equal signs
 define check-tool-var
+ifeq ($(filter clean CLEAN_%,$(MAKECMDGOALS)),)
 _v = $(2)_$(3)
 ifndef $$(_v)
 $$(_v) := $$(call $(1),$(subst %, ,$(3)))
 export $$(_v)
 endif
+endif
 endef
 
 # Usage: check-gcc-var,<flag>
-- 
1.7.8.3