selftests/bpf: Fix symlink creation error

When building with O=, the following error occurs:

    ln: failed to create symbolic link 'no_alu32/bpftool': No such file or directory

Adjust the code to account for $(OUTPUT).

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Link: https://lore.kernel.org/r/20230128000650.1516334-6-iii@linux.ibm.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 02d41af..e790397 100644 (file)
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -519,7 +519,8 @@ $(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS)                   \
        $$(call msg,BINARY,,$$@)
        $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@
        $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@
-       $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/bootstrap/bpftool $(if $2,$2/)bpftool
+       $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/bootstrap/bpftool \
+                  $(OUTPUT)/$(if $2,$2/)bpftool
 
 endef