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[HID,for-next,v2,2/9] selftests: hid: allow to compile hid_bpf with LLVM

Message ID 20230113090935.1763477-3-benjamin.tissoires@redhat.com (mailing list archive)
State Mainlined
Commit 633ba3be76426056a047b2a355082d94afa9230d
Headers show
Series HID-BPF LLVM fixes, no more hacks | expand

Commit Message

Benjamin Tissoires Jan. 13, 2023, 9:09 a.m. UTC
clang doesn't like to compile a source to the final binary directly:

clang-14: error: cannot specify -o when generating multiple output files

So split the final rule in 2, and ensure we compile all dependencies

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>


no changes in v2
 tools/testing/selftests/hid/Makefile | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
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diff --git a/tools/testing/selftests/hid/Makefile b/tools/testing/selftests/hid/Makefile
index f6fc5cfff770..83e8f87d643a 100644
--- a/tools/testing/selftests/hid/Makefile
+++ b/tools/testing/selftests/hid/Makefile
@@ -91,10 +91,6 @@  $(MAKE_DIRS):
 	$(call msg,MKDIR,,$@)
 	$(Q)mkdir -p $@
-$(OUTPUT)/%.o: %.c
-	$(call msg,CC,,$@)
-	$(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
 # LLVM's ld.lld doesn't support all the architectures, so use it only on x86
 ifeq ($(SRCARCH),x86)
 LLD := lld
@@ -223,7 +219,11 @@  $(BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(OUTPUT)
 	$(Q)$(BPFTOOL) gen object $(<:.o=.linked1.o) $<
 	$(Q)$(BPFTOOL) gen skeleton $(<:.o=.linked1.o) name $(notdir $(<:.bpf.o=)) > $@
-$(OUTPUT)/%:%.c $(BPF_SKELS) $(KHDR_INCLUDES)/linux/hid.h
+$(OUTPUT)/%.o: %.c $(BPF_SKELS) $(KHDR_INCLUDES)/linux/hid.h
+	$(call msg,CC,,$@)
+	$(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
+$(OUTPUT)/%: $(OUTPUT)/%.o
 	$(call msg,BINARY,,$@)
 	$(Q)$(LINK.c) $^ $(LDLIBS) -o $@