libnl: requires thread support

Fixes
http://autobuild.buildroot.net/results/813602e91ad4022957b3bc8d285ddb2b05d3b875/build-end.log

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/hostapd/Config.in

@@ -1,5 +1,6 @@
 config BR2_PACKAGE_HOSTAPD
 	bool "hostapd"
+	depends on BR2_TOOLCHAIN_HAS_THREADS # libnl
 	select BR2_PACKAGE_LIBNL
 	help
 	  User space daemon for wireless access points.
@@ -23,3 +24,6 @@ config BR2_PACKAGE_HOSTAPD_WPS
 	  Enable support for Wi-Fi Protected Setup.
 
 endif
+
+comment "hostapd requires a toolchain with thread support"
+	depends on !BR2_TOOLCHAIN_HAS_THREADS

package/iw/Config.in

@@ -1,7 +1,11 @@
 config BR2_PACKAGE_IW
 	bool "iw"
+	depends on BR2_TOOLCHAIN_HAS_THREADS # libnl
 	select BR2_PACKAGE_LIBNL
 	help
 	  Utility for wireless devices using the mac80211 kernel stack
 
 	  http://wireless.kernel.org/en/users/Documentation/iw
+
+comment "iw requires a toolchain with thread support"
+	depends on !BR2_TOOLCHAIN_HAS_THREADS

package/libnl/Config.in

@@ -1,5 +1,6 @@
 config BR2_PACKAGE_LIBNL
 	bool "libnl"
+	depends on BR2_TOOLCHAIN_HAS_THREADS
 	help
 	  A library for applications dealing with netlink socket.
 
@@ -10,3 +11,6 @@ config BR2_PACKAGE_LIBNL_TOOLS
 	depends on BR2_PACKAGE_LIBNL
 	help
 	  Install binary tools.
+
+comment "libnl requires a toolchain with thread support"
+	depends on !BR2_TOOLCHAIN_HAS_THREADS

package/ti-utils/Config.in

@@ -1,8 +1,12 @@
 config BR2_PACKAGE_TI_UTILS
 	bool "ti-utils"
+	depends on BR2_TOOLCHAIN_HAS_THREADS # libnl
 	select BR2_PACKAGE_LIBNL
 	help
 	  The calibrator and other useful utilities for TI wireless solution,
 	  based on wl12xx driver.
 
 	  http://linuxwireless.org/en/users/Drivers/wl12xx/calibrator
+
+comment "ti-utils requires a toolchain with thread support"
+	depends on !BR2_TOOLCHAIN_HAS_THREADS