selftests/bpf: Fix liburandom_read.so linker error

When building with O=, the following linker error occurs:

    clang: error: no such file or directory: 'liburandom_read.so'

Fix by adding $(OUTPUT) to the linker search path.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Link: https://lore.kernel.org/r/20230128000650.1516334-5-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 53eae7b..02d41af 100644 (file)
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -189,7 +189,7 @@ $(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c
 $(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so
        $(call msg,BINARY,,$@)
        $(Q)$(CLANG) $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \
-                    liburandom_read.so $(filter-out -static,$(LDLIBS))      \
+                    -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT)  \
                     -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \
                     -Wl,-rpath=. -o $@