The BTF_ID_LIST macro definition in btf_ids.h: #define BTF_ID_LIST(name) \ __BTF_ID_LIST(name) \ extern u32 name[]; The variable defined in __BTF_ID_LIST has ".local" directive, which means the variable is only available in the current file. So change the scope of "name" in the declaration from "extern" to "static". Signed-off-by: Yonghong Song <yhs@xxxxxx> --- include/linux/btf_ids.h | 2 +- tools/include/linux/btf_ids.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/btf_ids.h b/include/linux/btf_ids.h index 1cdb56950ffe..cebc9a655959 100644 --- a/include/linux/btf_ids.h +++ b/include/linux/btf_ids.h @@ -66,7 +66,7 @@ asm( \ #define BTF_ID_LIST(name) \ __BTF_ID_LIST(name) \ -extern u32 name[]; +static u32 name[]; /* * The BTF_ID_UNUSED macro defines 4 zero bytes. diff --git a/tools/include/linux/btf_ids.h b/tools/include/linux/btf_ids.h index fe019774f8a7..b870776201e5 100644 --- a/tools/include/linux/btf_ids.h +++ b/tools/include/linux/btf_ids.h @@ -64,7 +64,7 @@ asm( \ #define BTF_ID_LIST(name) \ __BTF_ID_LIST(name) \ -extern u32 name[]; +static u32 name[]; /* * The BTF_ID_UNUSED macro defines 4 zero bytes. -- 2.24.1
