error: unknown target triple 'unknown'

error: unknown target triple 'unknown'

[kernel test robot]

:::::: 
:::::: Manual check reason: "low confidence bisect report"
:::::: Manual check reason: "only suspicious fbc files changed"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Leo Yan <leo.yan@arm.com>
CC: Arnaldo Carvalho de Melo <acme@redhat.com>
CC: Ian Rogers <irogers@google.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   f14faaf3a1fb3b9e4cf2e56269711fb85fba9458
commit: 4772e66cb45e0dd2c3c9ac649532756c523afd1e perf build: Support build with clang
date:   4 months ago
:::::: branch date: 5 hours ago
:::::: commit date: 4 months ago
config: i386-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260205/202602050432.CWC319L4-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260205/202602050432.CWC319L4-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/r/202602050432.CWC319L4-lkp@intel.com/

All errors (new ones prefixed by >>):

   make[1]: -gcc: No such file or directory
   clang: error: no such file or directory: './-'
   clang: warning: /usr/bin/: 'linker' input unused [-Wunused-command-line-argument]
   clang: warning: ./: 'linker' input unused [-Wunused-command-line-argument]
   clang: warning: /usr/bin: 'linker' input unused [-Wunused-command-line-argument]
   clang: warning: tools/perf: 'linker' input unused [-Wunused-command-line-argument]
   clang: warning: tools: 'linker' input unused [-Wunused-command-line-argument]
   Illegal option -p
   make[2]: -gcc: No such file or directory
   make[2]: -gcc: No such file or directory
   clang: error: no such file or directory: './-'
   clang: error: no such file or directory: './-'
   clang: warning: /usr/bin/: 'linker' input unused [-Wunused-command-line-argument]
   clang: warning: ./: 'linker' input unused [-Wunused-command-line-argument]
   clang: warning: /usr/bin: 'linker' input unused [-Wunused-command-line-argument]
   clang: warning: tools/perf: 'linker' input unused [-Wunused-command-line-argument]
   clang: warning: tools: 'linker' input unused [-Wunused-command-line-argument]
   clang: warning: /usr/bin/: 'linker' input unused [-Wunused-command-line-argument]
   clang: warning: ./: 'linker' input unused [-Wunused-command-line-argument]
   clang: warning: /usr/bin: 'linker' input unused [-Wunused-command-line-argument]
   clang: warning: tools/perf: 'linker' input unused [-Wunused-command-line-argument]
   clang: warning: tools: 'linker' input unused [-Wunused-command-line-argument]
   Illegal option -p
>> error: unknown target triple 'unknown'
   sh: 1: command: Illegal option -k
   Makefile.config:237: *** Error: -pkg-config needed by libtraceevent is missing on this system, please install it.  Stop.
   make[1]: *** [Makefile.perf:289: sub-make] Error 2

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