When building 'ARCH=s390 defconfig compat.config' with GCC and LD=ld.lld, there is an error when attempting to link the compat vDSO: ld.lld: error: unknown emulation: elf_s390 make[4]: *** [arch/s390/kernel/vdso32/Makefile:48: arch/s390/kernel/vdso32/vdso32.so.dbg] Error 1 Much like clang, ld.lld only supports the 64-bit s390 emulation. Add a dependency on not using LLD to CONFIG_COMPAT to avoid breaking the build with this toolchain combination. Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx> --- arch/s390/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 771235aee6bf..39e937309fc2 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -449,7 +449,7 @@ config COMPAT select COMPAT_OLD_SIGACTION select HAVE_UID16 depends on MULTIUSER - depends on !CC_IS_CLANG + depends on !CC_IS_CLANG && !LD_IS_LLD help Select this option if you want to enable your system kernel to handle system-calls from ELF binaries for 31 bit ESA. This option --- base-commit: 616c4ea9bce426aa6efd6dc333bdd479ce352df0 change-id: 20240214-s390-compat-lld-dep-875a6c94be75 Best regards, -- Nathan Chancellor <nathan@xxxxxxxxxx>
