Re: [PATCH bpf-next] libbpf: Extend linker API to support in-memory ELF files

[kernel test robot <lkp@intel.com>]

Hi Alastair,

kernel test robot noticed the following build errors:

[auto build test ERROR on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Alastair-Robertson/libbpf-Extend-linker-API-to-support-in-memory-ELF-files/20241121-152231
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/20241120170206.2592931-1-ajor%40meta.com
patch subject: [PATCH bpf-next] libbpf: Extend linker API to support in-memory ELF files
config: sparc-randconfig-002-20241122 (https://download.01.org/0day-ci/archive/20241122/202411220938.1TZjtSM3-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241122/202411220938.1TZjtSM3-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411220938.1TZjtSM3-lkp@intel.com/

All errors (new ones prefixed by >>):

>> linker.c:2733:5: error: no previous prototype for 'linker_finalize_common' [-Werror=missing-prototypes]
    2733 | int linker_finalize_common(struct bpf_linker *linker)
         |     ^~~~~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors
   make[6]: *** [tools/build/Makefile.build:105: tools/bpf/resolve_btfids/libbpf/staticobjs/linker.o] Error 1
   make[6]: *** Waiting for unfinished jobs....
   make[5]: *** [Makefile:165: tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf-in.o] Error 2
   make[4]: *** [Makefile:63: tools/bpf/resolve_btfids//libbpf/libbpf.a] Error 2
   make[3]: *** [Makefile:76: bpf/resolve_btfids] Error 2 shuffle=1440844219
   make[2]: *** [Makefile:1370: tools/bpf/resolve_btfids] Error 2 shuffle=1440844219
   <stdin>:1519:2: warning: #warning syscall clone3 not implemented [-Wcpp]
   make[2]: Target 'prepare' not remade because of errors.
   make[1]: *** [Makefile:224: __sub-make] Error 2 shuffle=1440844219
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:224: __sub-make] Error 2 shuffle=1440844219
   make: Target 'prepare' not remade because of errors.

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