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authorAmerigo Wang <amwang@redhat.com>2012-09-20 20:36:06 +0000
committerDavid S. Miller <davem@davemloft.net>2012-09-21 12:06:46 -0400
commitfc18162520b642a46ea556300bfdee80810fc538 (patch)
treef65643f0f07654f23fb9b4ad480bade46763da79 /net/l2tp
parentb216a4d86fb599fa2808ea7456e15ca9b47bc756 (diff)
downloadlinux-fc18162520b642a46ea556300bfdee80810fc538.tar.gz
l2tp: fix compile error when CONFIG_IPV6=m and CONFIG_L2TP=y
When CONFIG_IPV6=m and CONFIG_L2TP=y, I got the following compile error: LD init/built-in.o net/built-in.o: In function `l2tp_xmit_core': l2tp_core.c:(.text+0x147781): undefined reference to `inet6_csk_xmit' net/built-in.o: In function `l2tp_tunnel_create': (.text+0x149067): undefined reference to `udpv6_encap_enable' net/built-in.o: In function `l2tp_ip6_recvmsg': l2tp_ip6.c:(.text+0x14e991): undefined reference to `ipv6_recv_error' net/built-in.o: In function `l2tp_ip6_sendmsg': l2tp_ip6.c:(.text+0x14ec64): undefined reference to `fl6_sock_lookup' l2tp_ip6.c:(.text+0x14ed6b): undefined reference to `datagram_send_ctl' l2tp_ip6.c:(.text+0x14eda0): undefined reference to `fl6_sock_lookup' l2tp_ip6.c:(.text+0x14ede5): undefined reference to `fl6_merge_options' l2tp_ip6.c:(.text+0x14edf4): undefined reference to `ipv6_fixup_options' l2tp_ip6.c:(.text+0x14ee5d): undefined reference to `fl6_update_dst' l2tp_ip6.c:(.text+0x14eea3): undefined reference to `ip6_dst_lookup_flow' l2tp_ip6.c:(.text+0x14eee7): undefined reference to `ip6_dst_hoplimit' l2tp_ip6.c:(.text+0x14ef8b): undefined reference to `ip6_append_data' l2tp_ip6.c:(.text+0x14ef9d): undefined reference to `ip6_flush_pending_frames' l2tp_ip6.c:(.text+0x14efe2): undefined reference to `ip6_push_pending_frames' net/built-in.o: In function `l2tp_ip6_destroy_sock': l2tp_ip6.c:(.text+0x14f090): undefined reference to `ip6_flush_pending_frames' l2tp_ip6.c:(.text+0x14f0a0): undefined reference to `inet6_destroy_sock' net/built-in.o: In function `l2tp_ip6_connect': l2tp_ip6.c:(.text+0x14f14d): undefined reference to `ip6_datagram_connect' net/built-in.o: In function `l2tp_ip6_bind': l2tp_ip6.c:(.text+0x14f4fe): undefined reference to `ipv6_chk_addr' net/built-in.o: In function `l2tp_ip6_init': l2tp_ip6.c:(.init.text+0x73fa): undefined reference to `inet6_add_protocol' l2tp_ip6.c:(.init.text+0x740c): undefined reference to `inet6_register_protosw' net/built-in.o: In function `l2tp_ip6_exit': l2tp_ip6.c:(.exit.text+0x1954): undefined reference to `inet6_unregister_protosw' l2tp_ip6.c:(.exit.text+0x1965): undefined reference to `inet6_del_protocol' net/built-in.o:(.rodata+0xf2d0): undefined reference to `inet6_release' net/built-in.o:(.rodata+0xf2d8): undefined reference to `inet6_bind' net/built-in.o:(.rodata+0xf308): undefined reference to `inet6_ioctl' net/built-in.o:(.data+0x1af40): undefined reference to `ipv6_setsockopt' net/built-in.o:(.data+0x1af48): undefined reference to `ipv6_getsockopt' net/built-in.o:(.data+0x1af50): undefined reference to `compat_ipv6_setsockopt' net/built-in.o:(.data+0x1af58): undefined reference to `compat_ipv6_getsockopt' make: *** [vmlinux] Error 1 This is due to l2tp uses symbols from IPV6, so when IPV6 is a module, l2tp is not allowed to be builtin. Cc: David Miller <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/l2tp')
-rw-r--r--net/l2tp/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/l2tp/Kconfig b/net/l2tp/Kconfig
index 4b1e71751e1..147a8fd47a1 100644
--- a/net/l2tp/Kconfig
+++ b/net/l2tp/Kconfig
@@ -4,6 +4,7 @@
menuconfig L2TP
tristate "Layer Two Tunneling Protocol (L2TP)"
+ depends on (IPV6 || IPV6=n)
depends on INET
---help---
Layer Two Tunneling Protocol