[Buildroot] [PATCH v2 1/3] package/pkg-waf: allow for override of PKG_WAF directive

[David GOUARIN]

As suggested by Thomas for the libtalloc patch : http://patchwork.ozlabs.org/project/buildroot/patch/20200327150225.15277-1-jared.bents@rockwellcollins.com/

Signed-off-by: David GOUARIN <dgouarin at gmail.com>
---
 package/pkg-waf.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package/pkg-waf.mk b/package/pkg-waf.mk
index 35e56d3c13..038d89454e 100644
--- a/package/pkg-waf.mk
+++ b/package/pkg-waf.mk
@@ -46,7 +46,7 @@ ifeq ($$($(2)_NEEDS_EXTERNAL_WAF),YES)
 $(2)_DEPENDENCIES += host-waf
 $(2)_WAF = $$(HOST_DIR)/bin/waf
 else
-$(2)_WAF = ./waf
+$(2)_WAF ?= ./waf
 endif
 
 $(2)_BUILD_OPTS				?=
-- 
2.17.1