0050-linux-make-IPv6-builtin-if-selected-saves-30KB.patch

From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Thu, 16 Jun 2016 00:51:07 +0200
Subject: linux: make IPv6 builtin if selected (saves >30KB)

Signed-off-by: Steven Barth <steven@midlink.org>

Backport of OpenWrt r46834

kmod-ipv6 is added to the PROVIDES of the kernel package, so we don't have
to adjust all packages depending on kmod-ipv6.

diff --git a/config/Config-build.in b/config/Config-build.in
index 4674d8403539a3b209d709342ab71a6e6ff79de2..cd50290f812f73bc6886a789a456956fa4fb1e42 100644
--- a/config/Config-build.in
+++ b/config/Config-build.in
@@ -83,7 +83,7 @@ menu "Global build settings"
 		prompt "Enable IPv6 support in packages"
 		default y
 		help
-		  Enable IPv6 support in packages (passes --enable-ipv6 to configure scripts).
+		  Enables IPv6 support in kernel (builtin) and packages.
 
 	config PKG_BUILD_PARALLEL
 		bool
diff --git a/package/kernel/linux/Makefile b/package/kernel/linux/Makefile
index 45ca9faa923eb1a1db97d94d0406a46223c59a8f..b06c49a92fd396e8edcb0ca7a7a94b74b05a87e0 100644
--- a/package/kernel/linux/Makefile
+++ b/package/kernel/linux/Makefile
@@ -49,6 +49,7 @@ define Package/kernel
   TITLE:=Virtual kernel package
   VERSION:=$(LINUX_VERSION)-$(LINUX_RELEASE)-$(LINUX_VERMAGIC)
   URL:=http://www.kernel.org/
+  PROVIDES:=$(if $(CONFIG_IPV6),kmod-ipv6)
 endef
 
 define Package/kernel/install
diff --git a/package/kernel/linux/modules/netsupport.mk b/package/kernel/linux/modules/netsupport.mk
index cea8e47a65b5283640a17ed6c311bd87c70373b2..8a2760d8a4a429f206eba41a8c83432e5b6ddab7 100644
--- a/package/kernel/linux/modules/netsupport.mk
+++ b/package/kernel/linux/modules/netsupport.mk
@@ -439,7 +439,7 @@ $(eval $(call KernelPackage,iptunnel4))
 define KernelPackage/iptunnel6
   SUBMENU:=$(NETWORK_SUPPORT_MENU)
   TITLE:=IPv6 tunneling
-  DEPENDS:= +kmod-ipv6
+  DEPENDS:=@IPV6
   KCONFIG:= \
 	CONFIG_INET6_TUNNEL
   FILES:=$(LINUX_DIR)/net/ipv6/tunnel6.ko
@@ -456,15 +456,16 @@ $(eval $(call KernelPackage,iptunnel6))
 define KernelPackage/ipv6
   SUBMENU:=$(NETWORK_SUPPORT_MENU)
   TITLE:=IPv6 support
+  DEPENDS:=@IPV6
+  HIDDEN:=1
+  DEFAULT:=y
   KCONFIG:= \
-	CONFIG_IPV6 \
+	CONFIG_IPV6=y \
 	CONFIG_IPV6_PRIVACY=y \
 	CONFIG_IPV6_MULTIPLE_TABLES=y \
 	CONFIG_IPV6_MROUTE=y \
 	CONFIG_IPV6_PIMSM_V2=n \
 	CONFIG_IPV6_SUBTREES=y
-  FILES:=$(LINUX_DIR)/net/ipv6/ipv6.ko
-  AUTOLOAD:=$(call AutoLoad,20,ipv6)
 endef
 
 define KernelPackage/ipv6/description
@@ -476,7 +477,7 @@ $(eval $(call KernelPackage,ipv6))