[PATCH v2 06/10] selftests/bpf: Allow test_progs to link with a partial object set
From: Ricardo B. Marlière
Date: Fri Apr 03 2026 - 11:07:06 EST
When individual test files are skipped due to compilation failures, their
.test.o files are absent. The linker step currently lists all expected
.test.o files as explicit prerequisites, so make considers any missing one
an error.
Move TRUNNER_TEST_OBJS to the order-only prerequisite list so that their
absence does not prevent linking. Use $(wildcard ...) in the filter
expression passed to the linker so that only the objects that were actually
built are linked in.
Signed-off-by: Ricardo B. Marlière <rbm@xxxxxxxx>
---
tools/testing/selftests/bpf/Makefile | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 6a3835a58f87..ca64a7678dfe 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -738,14 +738,14 @@ endif
# some X.test.o files have runtime dependencies on Y.bpf.o files
$(OUTPUT)/$(TRUNNER_BINARY): | $(TRUNNER_BPF_OBJS)
-$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \
- $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \
+$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \
$(TRUNNER_LIB_OBJS) \
$(TRUNNER_BPFTOOL) \
$(OUTPUT)/veristat \
- | $(TRUNNER_BINARY)-extras
+ | $(TRUNNER_BINARY)-extras \
+ $(TRUNNER_TEST_OBJS)
$$(call msg,BINARY,,$$@)
- $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) $$(LLVM_LDLIBS) $$(LDFLAGS) $$(LLVM_LDFLAGS) -o $$@
+ $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^ $$(wildcard $(TRUNNER_TEST_OBJS))) $$(LDLIBS) $$(LLVM_LDLIBS) $$(LDFLAGS) $$(LLVM_LDFLAGS) -o $$@
$(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \
$(OUTPUT)/$(if $2,$2/)bpftool
--
2.53.0