[PATCH 1/7] pylibfdt: Allow pkg-config to be supplied in the environment

[Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>]

Some build systems have their own version of the pkg-config tool.
Use a variable for this instead of hard-coding it, to allow for this.

Signed-off-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Suggested-by: Mike Frysinger <vapier-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
---

 Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 1d08ec1..e6d8251 100644
--- a/Makefile
+++ b/Makefile
@@ -23,6 +23,7 @@ CFLAGS = -g -Os -fPIC -Werror $(WARNINGS)
 BISON = bison
 LEX = flex
 SWIG = swig
+PKG_CONFIG ?= pkg-config
 
 INSTALL = /usr/bin/install
 DESTDIR =
@@ -119,7 +120,7 @@ SCRIPTS = dtdiff
 # We need both Python and swig to build pylibfdt.
 .PHONY: maybe_pylibfdt
 maybe_pylibfdt: FORCE
-	if pkg-config --cflags python >/dev/null 2>&1; then \
+	if $(PKG_CONFIG) --cflags python >/dev/null 2>&1; then \
 		if which swig >/dev/null 2>&1; then \
 			can_build=yes; \
 		fi; \
-- 
2.12.1.578.ge9c3154ca4-goog