Commit 630628cb authored Dec 18, 2019 by Andrii Nakryiko Committed by Alexei Starovoitov Dec 18, 2019

libbpf: BTF is required when externs are present



BTF is required to get type information about extern variables.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191219002837.3074619-4-andriin@fb.com

parent 8601fd42

tools/lib/bpf/libbpf.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1887,7 +1887,8 @@ static void bpf_object__sanitize_btf_ext(struct bpf_object *obj)

		static bool bpf_object__is_btf_mandatory(const struct bpf_object *obj)
		{
		return obj->efile.btf_maps_shndx >= 0;
		return obj->efile.btf_maps_shndx >= 0 \|\|
		obj->nr_extern > 0;
		}

		static int bpf_object__init_btf(struct bpf_object *obj,

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