Hi,
On Bugzilla, ncopa@xxxxxxxxxxxxxxx reported resolve_btfids FTBFS regression
on musl system [1]:
> The latest releases fails to build with musl libc (Alpine Linux edge and v3.19):
>
> ```
> rm -f -f /home/ncopa/aports/main/linux-lts/src/build-lts.x86_64/tools/bpf/resolve_btfids/libbpf/libbpf.a; ar rcs /home/ncopa/aports/main/linux-lts/src/build-lts.x86_64/tool
> s/bpf/resolve_btfids/libbpf/libbpf.a /home/ncopa/aports/main/linux-lts/src/build-lts.x86_64/tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf-in.o
> In file included from main.c:73:
> /home/ncopa/aports/main/linux-lts/src/linux-6.6/tools/include/linux/btf_ids.h:7:9: error: unknown type name 'u32'
> 7 | u32 cnt;
> | ^~~
> /home/ncopa/aports/main/linux-lts/src/linux-6.6/tools/include/linux/btf_ids.h:8:9: error: unknown type name 'u32'
> 8 | u32 ids[];
> | ^~~
> /home/ncopa/aports/main/linux-lts/src/linux-6.6/tools/include/linux/btf_ids.h:12:9: error: unknown type name 'u32'
> 12 | u32 cnt;
> | ^~~
> /home/ncopa/aports/main/linux-lts/src/linux-6.6/tools/include/linux/btf_ids.h:13:9: error: unknown type name 'u32'
> 13 | u32 flags;
> | ^~~
> /home/ncopa/aports/main/linux-lts/src/linux-6.6/tools/include/linux/btf_ids.h:15:17: error: unknown type name 'u32'
> 15 | u32 id;
> | ^~~
> /home/ncopa/aports/main/linux-lts/src/linux-6.6/tools/include/linux/btf_ids.h:16:17: error: unknown type name 'u32'
> 16 | u32 flags;
> | ^~~
> /home/ncopa/aports/main/linux-lts/src/linux-6.6/tools/include/linux/btf_ids.h:215:8: error: unknown type name 'u32'
> 215 | extern u32 btf_tracing_ids[];
> | ^~~
> make[4]: *** [/home/ncopa/aports/main/linux-lts/src/linux-6.6/tools/build/Makefile.build:98: /home/ncopa/aports/main/linux-lts/src/build-lts.x86_64/tools/bpf/resolve_btfids
> /main.o] Error 1
> make[4]: *** Waiting for unfinished jobs....
> make[3]: *** [Makefile:83: /home/ncopa/aports/main/linux-lts/src/build-lts.x86_64/tools/bpf/resolve_btfids//resolve_btfids-in.o] Error 2
> make[2]: *** [Makefile:76: bpf/resolve_btfids] Error 2
> make[1]: *** [/home/ncopa/aports/main/linux-lts/src/linux-6.6/Makefile:1354: tools/bpf/resolve_btfids] Error 2
> make: *** [/home/ncopa/aports/main/linux-lts/src/linux-6.6/Makefile:234: __sub-make] Error 2
> ```
Bisection led to upstream commit 9707ac4fe2f5ba ("tools/resolve_btfids:
Refactor set sorting with types from btf_ids.h") as the culprit.
See the report on Bugzilla for the full thread and proposed fix.
Thanks.
[1]: https://bugzilla.kernel.org/show_bug.cgi?id=218647
--
An old man doll... just what I always wanted! - Clara
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