Hi Arnaldo,

FYI,

On Wed, 27 Nov 2019 at 19:15, Arnaldo Carvalho de Melo
[off-list ref] wrote:

Another fix I'm carrying in my perf/core branch,

Regards,

- Arnaldo

commit 98bb09f90a0ae33125fabc8f41529345382f1498
Author: Arnaldo Carvalho de Melo [off-list ref]
Date:   Wed Nov 27 09:26:54 2019 -0300

    libbpf: Use PRIu64 for sym->st_value to fix build on 32-bit arches

    The st_value field is a 64-bit value, so use PRIu64 to fix this error on
    32-bit arches:

      In file included from libbpf.c:52:
      libbpf.c: In function 'bpf_program__record_reloc':
      libbpf_internal.h:59:22: error: format '%lu' expects argument of type 'long unsigned int', but argument 3 has type 'Elf64_Addr' {aka 'const long long unsigned int'} [-Werror=format=]
        libbpf_print(level, "libbpf: " fmt, ##__VA_ARGS__); \
                            ^~~~~~~~~~
      libbpf_internal.h:62:27: note: in expansion of macro '__pr'
       #define pr_warn(fmt, ...) __pr(LIBBPF_WARN, fmt, ##__VA_ARGS__)
                                 ^~~~
      libbpf.c:1822:4: note: in expansion of macro 'pr_warn'
          pr_warn("bad call relo offset: %lu\n", sym->st_value);
          ^~~~~~~
      libbpf.c:1822:37: note: format string is defined here
          pr_warn("bad call relo offset: %lu\n", sym->st_value);
                                         ~~^
                                         %llu

This build error is been noticed on Linux mainline kernel for 32-bit
architectures from Nov 26.

Full build log,
https://ci.linaro.org/job/openembedded-lkft-linux-mainline/DISTRO=lkft,MACHINE=intel-core2-32,label=docker-lkft/2297/consoleText
https://ci.linaro.org/job/openembedded-lkft-linux-mainline/

- Naresh