package/sane-backends: remove unsafe headers path

Fixes:
http://autobuild.buildroot.net/results/deb/deb3d45416633b9217d3cc09664273687c809464/

Signed-off-by: Romain Naour <romain.naour@openwide.fr>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/sane-backends/0003-remove-unsafe-headers-path.patch

@@ -0,0 +1,28 @@
+From 3c03e4b81c9de73e57a56029f7f8cda8bec24e91 Mon Sep 17 00:00:00 2001
+From: Romain Naour <romain.naour@openwide.fr>
+Date: Sat, 10 Jan 2015 15:48:21 +0100
+Subject: [PATCH] configure.in: remove unsafe headers path
+
+Forcing /usr/local/include headers path in CFLAGS is unsafe for
+cross-compilation.
+
+Signed-off-by: Romain Naour <romain.naour@openwide.fr>
+---
+ configure.in | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/configure.in b/configure.in
+index a8fc950..93a4b77 100644
+--- a/configure.in
++++ b/configure.in
+@@ -82,7 +82,6 @@ AM_CONDITIONAL(CROSS_COMPILING, test x$cross_compiling = xyes)
+ dnl ***********************************************************************
+ dnl set compiler/linker flags
+ dnl ***********************************************************************
+-INCLUDES="${INCLUDES} -I/usr/local/include"
+ AC_SUBST(INCLUDES)
+ SANE_SET_CFLAGS([$is_release])
+ SANE_SET_LDFLAGS
+-- 
+1.9.3
+

package/sane-backends/sane-backends.mk

@@ -10,6 +10,8 @@ SANE_BACKENDS_CONFIG_SCRIPTS = sane-config
 SANE_BACKENDS_LICENSE = GPLv2+
 SANE_BACKENDS_LICENSE_FILES = COPYING
 SANE_BACKENDS_INSTALL_STAGING = YES
+# 0003-remove-unsafe-headers-path.patch patch configure.in
+SANE_BACKENDS_AUTORECONF = YES
 
 ifeq ($(BR2_PACKAGE_LIBUSB),y)
 SANE_BACKENDS_DEPENDENCIES += libusb