[linux-6.1.y] MIPS: ./scripts/check-local-export: llvm-nm failed

[FlyGoat]

Hi,

I'm trying to backport MIPS clang build support for 6.1 but run into immedate problem that

➜  linux-stable git:(b4/mips-backports-6-1) make ARCH=mips malta_defconfig LLVM=18
#
# No change to .config
#
➜  linux-stable git:(b4/mips-backports-6-1) make ARCH=mips LLVM=18                 
  SYNC    include/config/auto.conf.cmd
  HOSTCC  scripts/genksyms/genksyms.o
  YACC    scripts/genksyms/parse.tab.[ch]
  HOSTCC  scripts/genksyms/parse.tab.o
  LEX     scripts/genksyms/lex.lex.c
  HOSTCC  scripts/genksyms/lex.lex.o
  HOSTLD  scripts/genksyms/genksyms
  HOSTCC  scripts/asn1_compiler
  CC      scripts/mod/empty.o
./scripts/check-local-export: llvm-nm failed
Terminated
make[1]: *** [scripts/Makefile.build:250: scripts/mod/empty.o] Error 143
make[1]: *** Deleting file 'scripts/mod/empty.o'
make: *** [Makefile:1284: prepare0] Error 2

Does it ring a bell for you guys?

Thanks

[nathanchance]

Is there a typo in your command? LLVM=18 -> LLVM=-18? Not sure if that is it though since I would have expected your HOSTCC commands to fail due to clang18...

[FlyGoat]

@nathanchance Ah sorry, I edited it wrong when pasting here.

[nathanchance]

Just wanted to make sure it was something as simple as that :) To answer your original question, I do not recall seeing this before.

scripts/check-local-export is calling just $NM (should be llvm-nm-18) with its first argument. Are you able to run that command manually to see why it is failing? Another option may be to remove the 2>/dev/null to see if it will appear in the output.