From 97fc2dc61276f84f08203e23324ba4cd5e3969ce Mon Sep 17 00:00:00 2001
From: Romain Naour <romain.naour@openwide.fr>
Date: Mon, 29 Dec 2014 21:54:02 +0100
Subject: [PATCH] Allow libnl-3.0 include path be specified

The '/usr/include/libnl3' header path is unsafe for cross-compilation.
Use pkg-config to find libnl-3.0 headers by default and alternatively,
allow LIBNL_INC=<path> to be used in .config to override.

Signed-off-by: Romain Naour <romain.naour@openwide.fr>
---
 src/drivers/drivers.mak | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/drivers/drivers.mak b/src/drivers/drivers.mak
index ab392bcaf..943407875 100644
--- a/src/drivers/drivers.mak
+++ b/src/drivers/drivers.mak
@@ -39,7 +39,13 @@ NEED_RFKILL=y
 ifdef CONFIG_LIBNL32
   DRV_LIBS += -lnl-3
   DRV_LIBS += -lnl-genl-3
-  DRV_CFLAGS += -DCONFIG_LIBNL20 -I/usr/include/libnl3
+  DRV_CFLAGS += -DCONFIG_LIBNL20
+  ifdef LIBNL_INC
+    DRV_CFLAGS += -I$(LIBNL_INC)
+  else
+    PKG_CONFIG ?= pkg-config
+    DRV_CFLAGS += $(shell $(PKG_CONFIG) --cflags libnl-3.0)
+  endif
 ifdef CONFIG_LIBNL3_ROUTE
   DRV_LIBS += -lnl-route-3
   DRV_CFLAGS += -DCONFIG_LIBNL3_ROUTE