selftests/bpf: Fix cross-compiling urandom_read

BugLink: https://bugs.launchpad.net/bugs/2097575

[ Upstream commit fd526e121c4d6f71aed82d21a8b8277b03e60b43 ]

Linking of urandom_read and liburandom_read.so prefers LLVM's 'ld.lld' but
falls back to using 'ld' if unsupported. However, this fallback discards
any existing makefile macro for LD and can break cross-compilation.

Fix by changing the fallback to use the target linker $(LD), passed via
'-fuse-ld=' using an absolute path rather than a linker "flavour".

Fixes: 08c79c9cd6 ("selftests/bpf: Don't force lld on non-x86 architectures")
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20241009040720.635260-1-tony.ambardar@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

This commit is contained in:

Tony Ambardar

2024-10-08 21:07:20 -07:00

committed by

Stefan Bader

parent c55ac3f650

commit 592435ce8d

1 changed files with 1 additions and 1 deletions

									
										tools/testing/selftests/bpf/Makefile
									
		+1
		-1
	
												View File
												
				@@ -208,7 +208,7 @@ $(OUTPUT)/%:%.c

				ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 riscv))

				LLD := lld

				else

				LLD := ld

				LLD := $(shell command -v $(LD))

				endif

				# Filter out -static for liburandom_read.so and its dependent targets so that static builds