diff options
Diffstat (limited to 'tools/lib/bpf')
| -rw-r--r-- | tools/lib/bpf/bpf_helpers.h | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/tools/lib/bpf/bpf_helpers.h b/tools/lib/bpf/bpf_helpers.h index 62e1c0cc4a59..305c62817dd3 100644 --- a/tools/lib/bpf/bpf_helpers.h +++ b/tools/lib/bpf/bpf_helpers.h @@ -186,10 +186,21 @@ enum libbpf_tristate { #define __kptr __attribute__((btf_type_tag("kptr"))) #define __percpu_kptr __attribute__((btf_type_tag("percpu_kptr"))) -#define bpf_ksym_exists(sym) ({ \ - _Static_assert(!__builtin_constant_p(!!sym), #sym " should be marked as __weak"); \ - !!sym; \ +#if defined (__clang__) +#define bpf_ksym_exists(sym) ({ \ + _Static_assert(!__builtin_constant_p(!!sym), \ + #sym " should be marked as __weak"); \ + !!sym; \ }) +#elif __GNUC__ > 8 +#define bpf_ksym_exists(sym) ({ \ + _Static_assert(__builtin_has_attribute (*sym, __weak__), \ + #sym " should be marked as __weak"); \ + !!sym; \ +}) +#else +#define bpf_ksym_exists(sym) !!sym +#endif #define __arg_ctx __attribute__((btf_decl_tag("arg:ctx"))) #define __arg_nonnull __attribute((btf_decl_tag("arg:nonnull"))) |