selftests/nolibc: use lld to link loongarch binaries

LLVM 21 switched to -mcmodel=medium for LoongArch64 compilations.
This code model uses R_LARCH_ECALL36 relocations which might not be
supported by GNU ld which to nolibc testsuite uses by default.
ld will not resolve the relocation and all function calls will end up
as busy loops.

Use lld instead.

We can not switch to lld for all LLVM builds, as it does not support all
necessary architectures.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>

diff --git a/tools/testing/selftests/nolibc/Makefile.nolibc b/tools/testing/selftests/nolibc/Makefile.nolibc
index 330e000baeb1db578ae08f8c4a085d5ee97910e5..9423f4a959b2a8cbecf93568a4471620641628e9 100644 (file)
--- a/tools/testing/selftests/nolibc/Makefile.nolibc
+++ b/tools/testing/selftests/nolibc/Makefile.nolibc
@@ -230,6 +230,7 @@ CFLAGS_mipsn32le = -EL -mabi=n32 -fPIC -march=mips64r2
 CFLAGS_mipsn32be = -EB -mabi=n32 -march=mips64r6
 CFLAGS_mips64le = -EL -mabi=64 -march=mips64r6
 CFLAGS_mips64be = -EB -mabi=64 -march=mips64r2
+CFLAGS_loongarch = $(if $(LLVM),-fuse-ld=lld)
 CFLAGS_sparc32 = $(call cc-option,-m32)
 CFLAGS_sh4 = -ml -m4
 ifeq ($(origin XARCH),command line)