[Buildroot] [git commit branch/next] quagga: fix non-IPv6 build failures

[Peter Korsgaard]

commit: http://git.buildroot.net/buildroot/commit/?id=4991fbbdb4aef7f5a7bf22a62872b8b59163102a
branch: http://git.buildroot.net/buildroot/commit/?id=refs/heads/next

The Zebra daemon now requires IPv6 support so disable it for non-IPv6
toolchains and add a comment mentioning it.
The BABEL protocol/daemon also requires IPv6 so just enable it when it's
available.

Signed-off-by: Gustavo Zacarias <gustavo at zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet at sunsite.dk>
---
 package/quagga/Config.in |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/package/quagga/Config.in b/package/quagga/Config.in
index 5a01863..0834201 100644
--- a/package/quagga/Config.in
+++ b/package/quagga/Config.in
@@ -10,11 +10,16 @@ if BR2_PACKAGE_QUAGGA
 
 config BR2_PACKAGE_QUAGGA_ZEBRA
 	bool "zebra daemon"
+	depends on BR2_INET_IPV6
 	help
 	  Build zebra daemon.
 
+comment "Zebra daemon requires a toolchain with IPV6 support"
+	depends on BR2_PACKAGE_QUAGGA && !BR2_INET_IPV6
+
 config BR2_PACKAGE_QUAGGA_TCP_ZEBRA
 	bool "Use TCP sockets between zebra and protocol daemons"
+	depends on BR2_PACKAGE_QUAGGA_ZEBRA
 	help
 	  Use a TCP socket to communicate between zebra (supervisor) and
 	  the different protocol daemons.
@@ -24,6 +29,7 @@ config BR2_PACKAGE_QUAGGA_TCP_ZEBRA
 
 config BR2_PACKAGE_QUAGGA_BABELD
 	bool "BABEL protocol"
+	depends on BR2_INET_IPV6
 	help
 	  Build babeld daemon.