riscv: fix vdso build with lld (3c1918c8) · Commits · 戴 / test

When building with the LLVM linker this error occurrs: LD arch/riscv/kernel/vdso/vdso-syms.o ld.lld: error: no input files This happens because the lld treats -R as an alias to -rpath, as opposed to ld where -R means --just-symbols. Use the long option name for compatibility between the two. Link: https://github.com/ClangBuiltLinux/linux/issues/805 Reported-by:

Dmitry Golovin <dima@golovin.in> Reviewed-by:

Nick Desaulniers <ndesaulniers@google.com> Signed-off-by:

Ilie Halip <ilie.halip@gmail.com> Reviewed-by:

Fangrui Song <maskray@google.com> Signed-off-by:

Palmer Dabbelt <palmerdabbelt@google.com>

arch/riscv/kernel/vdso/Makefile

+3 −3

Original line number	Diff line number	Diff line
		@@ -33,15 +33,15 @@ $(obj)/vdso.so.dbg: $(src)/vdso.lds $(obj-vdso) FORCE
		$(call if_changed,vdsold)

		# We also create a special relocatable object that should mirror the symbol
		# table and layout of the linked DSO. With ld -R we can then refer to
		# these symbols in the kernel code rather than hand-coded addresses.
		# table and layout of the linked DSO. With ld --just-symbols we can then
		# refer to these symbols in the kernel code rather than hand-coded addresses.

		SYSCFLAGS_vdso.so.dbg = -shared -s -Wl,-soname=linux-vdso.so.1 \
		-Wl,--build-id -Wl,--hash-style=both
		$(obj)/vdso-dummy.o: $(src)/vdso.lds $(obj)/rt_sigreturn.o FORCE
		$(call if_changed,vdsold)

		LDFLAGS_vdso-syms.o := -r -R
		LDFLAGS_vdso-syms.o := -r --just-symbols
		$(obj)/vdso-syms.o: $(obj)/vdso-dummy.o FORCE
		$(call if_changed,ld)

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