From edca0881939ebe7e1138afdf30b55b6bbe1e5d79 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ga=C3=ABtan=20Harter?= <gaetan.harter@fu-berlin.de>
Date: Fri, 4 Oct 2019 13:51:41 +0200
Subject: [PATCH] pkg/pkg.mk: add checks for required variables

Ensure the required variables are defined before including 'pkg.mk'.
---
 pkg/pkg.mk | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/pkg/pkg.mk b/pkg/pkg.mk
index cb06835a5b..626610a924 100644
--- a/pkg/pkg.mk
+++ b/pkg/pkg.mk
@@ -1,6 +1,20 @@
 #
 # Include this file if your Package needs to be checked out by git
 #
+
+ifeq (,$(PKG_NAME))
+  $(error PKG_NAME not defined)
+endif
+ifeq (,$(PKG_URL))
+  $(error PKG_URL not defined)
+endif
+ifeq (,$(PKG_VERSION))
+  $(error PKG_VERSION not defined)
+endif
+ifeq (,$(PKG_LICENSE))
+  $(error PKG_LICENSE not defined)
+endif
+
 PKG_DIR?=$(CURDIR)
 PKG_BUILDDIR?=$(PKGDIRBASE)/$(PKG_NAME)
 PKG_SOURCE_LOCAL ?= $(PKG_SOURCE_LOCAL_$(shell echo $(PKG_NAME) | tr a-z- A-Z_))