libnet: disable for musl toolchains

Signed-off-by: Joris Lijssens <joris.lijssens@gmail.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libnet/Config.in

@@ -1,7 +1,12 @@
 config BR2_PACKAGE_LIBNET
 	bool "libnet"
+	# Build with musl fails due to header issues
+	depends on !BR2_TOOLCHAIN_USES_MUSL
 	help
 	  libnet provides a portable framework for low-level network
 	  packet construction.
 
 	  http://sourceforge.net/projects/libnet-dev
+
+comment "libnet needs a (e)glibc or uClibc toolchain"
+	depends on BR2_TOOLCHAIN_USES_MUSL