bpf: Disallow BPF_PRELOAD in allmodconfig builds

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The CC_CAN_LINK checks that the host compiler can link, but bpf_preload
relies on libbpf which in turn needs libelf to be present during linking.
allmodconfig runs in odd setups with cross compilers and missing host
libraries like libelf. Instead of extending kconfig with every possible
library that bpf_preload might need disallow building BPF_PRELOAD in
such build-only configurations.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Alexei Starovoitov 2020-08-25 15:23:46 -07:00

parent cd324d7abb

commit 2532f849b5

1 changed files with 3 additions and 0 deletions

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kernel/bpf/preload/Kconfig

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