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SubjectRe: ANNOUNCE: pahole v1.23 (BTF tags and alignment inference)
Em Wed, Dec 08, 2021 at 03:35:36PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Wed, Dec 08, 2021 at 03:26:31PM +0100, Jan Engelhardt escreveu:
> > On Wednesday 2021-12-08 14:54, Arnaldo Carvalho de Melo wrote:
> > > The v1.23 release of pahole and its friends is out, this time
> > >the main new features are the ability to encode BTF tags, to carry
> >
> > [ 7s] /home/abuild/rpmbuild/BUILD/dwarves-1.23/btf_encoder.c:145:10: error: 'BTF_KIND_DECL_TAG' undeclared here (not in a function); did you mean 'BTF_KIND_FLOAT'?

> > libbpf-0.5.0 is present, since CMakeLists.txt checked for >= 0.4.0.

> My fault, knowing the flux that libbpf is in getting to 1.0 I should
> have retested with the perf tools container based tests.

> Can you think about some fix for that? Lemme see if BTF_KIND_DECL_TAG is
> a define or an enum...

enum {
BTF_KIND_UNKN = 0, /* Unknown */
BTF_KIND_INT = 1, /* Integer */
BTF_KIND_PTR = 2, /* Pointer */
BTF_KIND_ARRAY = 3, /* Array */
BTF_KIND_STRUCT = 4, /* Struct */
BTF_KIND_UNION = 5, /* Union */
BTF_KIND_ENUM = 6, /* Enumeration */
BTF_KIND_FWD = 7, /* Forward */
BTF_KIND_TYPEDEF = 8, /* Typedef */
BTF_KIND_VOLATILE = 9, /* Volatile */
BTF_KIND_CONST = 10, /* Const */
BTF_KIND_RESTRICT = 11, /* Restrict */
BTF_KIND_FUNC = 12, /* Function */
BTF_KIND_FUNC_PROTO = 13, /* Function Proto */
BTF_KIND_VAR = 14, /* Variable */
BTF_KIND_DATASEC = 15, /* Section */
BTF_KIND_FLOAT = 16, /* Floating point */
BTF_KIND_DECL_TAG = 17, /* Decl Tag */
BTF_KIND_TYPE_TAG = 18, /* Type Tag */

NR_BTF_KINDS,
BTF_KIND_MAX = NR_BTF_KINDS - 1,
};

Do you guys have any plans on updating libbpf?

- Arnaldo

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