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sparc: Disable compat support with LLD

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An LLVM=1 sparc64 allmodconfig enables COMPAT and then tries to
build the 32-bit vDSO. That path cannot be linked with ld.lld:

  ld.lld: error: unknown emulation: elf32_sparc

ld.lld does not support the 32-bit SPARC ELF emulation used for
the compat vDSO, so keep COMPAT disabled when LLD is the linker.
This avoids selecting an unsupported build path while leaving the
existing GNU ld configuration unchanged.

Assisted-by: Codex:GPT-5.5
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Acked-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Andreas Larsson <andreas@gaisler.com>
Link: https://lore.kernel.org/r/20260508000834.834824-1-rosenp@gmail.com
Signed-off-by: Andreas Larsson <andreas@gaisler.com>
This commit is contained in:
Rosen Penev 2026-05-07 17:08:34 -07:00 committed by Andreas Larsson
parent 9bc0bd9617
commit 852fed2e8b
1 changed files with 1 additions and 0 deletions
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arch/sparc/Kconfig
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@ -450,6 +450,7 @@ endmenu
config COMPAT
bool
depends on SPARC64
depends on !LD_IS_LLD
default y
select HAVE_UID16
select ARCH_WANT_OLD_COMPAT_IPC