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bpfilter: check compiler capability in Kconfig

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With the brand-new syntax extension of Kconfig, we can directly
check the compiler capability in the configuration phase.

If the cc-can-link.sh fails, the BPFILTER_UMH is automatically
hidden by the dependency.

I also deleted 'default n', which is no-op.

Signed-off-by: Masahiro Yamada <[email protected]>
Acked-by: Daniel Borkmann <[email protected]>
Acked-by: Alexei Starovoitov <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Masahiro Yamada 2018-06-26 12:55:35 +09:00 • committed by David S. Miller
commit 88e85a7daf
4 changed files with 2 additions and 11 deletions
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4
net/Makefile
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@ -20,11 +20,7 @@ obj-$(CONFIG_TLS) += tls/
obj-$(CONFIG_XFRM) += xfrm/
obj-$(CONFIG_UNIX) += unix/
obj-$(CONFIG_NET) += ipv6/
ifneq ($(CC_CAN_LINK),y)
$(warning CC cannot link executables. Skipping bpfilter.)
else
obj-$(CONFIG_BPFILTER) += bpfilter/
endif
obj-$(CONFIG_PACKET) += packet/
obj-$(CONFIG_NET_KEY) += key/
obj-$(CONFIG_BRIDGE) += bridge/