Subject: Re: [PATCH net-next v14 13/13] selftests: add ncdevmem, netcat for devmem TCP

From: Jakub Kicinski <[email-masked]>
Date: Wed, 26 Jun 2024 17:46:34 -0700

On Wed, 26 Jun 2024 15:08:22 -0700 Jakub Kicinski wrote:
> On Tue, 25 Jun 2024 19:54:01 +0000 Mina Almasry wrote:
> > +CFLAGS += -I../../../net/ynl/generated/
> > +CFLAGS += -I../../../net/ynl/lib/
> > +
> > +LDLIBS += ../../../net/ynl/lib/ynl.a ../../../net/ynl/generated/protos.a  
> 
> Not as easy as this.. Please add this commit to your series:
> https://github.com/kuba-moo/linux/commit/c130e8cc7208be544ec4f6f3627f1d36875d8c47
> 
> And here's an example of how you then use ynl.mk to code gen and build
> for desired families (note the ordering of variables vs includes,
> I remember that part was quite inflexible..):
> https://github.com/kuba-moo/linux/commit/5d357f97ccd0248ca6136c5e11ca3eadf5091bb3

Investigating this further my patches will not work for O=xyz builds
either. Please squash this into the relevant changes:

diff --git a/tools/testing/selftests/drivers/net/Makefile b/tools/testing/selftests/drivers/net/Makefile
index db60d2718b35..9966e5b7139b 100644
--- a/tools/testing/selftests/drivers/net/Makefile
+++ b/tools/testing/selftests/drivers/net/Makefile
@@ -9,7 +9,8 @@ TEST_PROGS := \
 	stats.py \
 # end of TEST_PROGS
 
-# YNL files
+# YNL files, must be before "include ..lib.mk"
+EXTRA_CLEAN += $(OUTPUT)/libynl.a
 YNL_GEN_FILES := psp_responder
 TEST_GEN_FILES += $(YNL_GEN_FILES)
 
diff --git a/tools/testing/selftests/net/ynl.mk b/tools/testing/selftests/net/ynl.mk
index 0e01ad12b30e..59cb26cf3f73 100644
--- a/tools/testing/selftests/net/ynl.mk
+++ b/tools/testing/selftests/net/ynl.mk
@@ -18,6 +18,4 @@ $(YNL_OUTPUTS): CFLAGS += \
 
 $(OUTPUT)/libynl.a:
 	$(Q)$(MAKE) -C $(top_srcdir)/tools/net/ynl GENS="$(YNL_GENS)" libynl.a
-	$(Q)cp $(top_srcdir)/tools/net/ynl/libynl.a ./
-
-EXTRA_CLEAN += libynl.a
+	$(Q)cp $(top_srcdir)/tools/net/ynl/libynl.a $(OUTPUT)/libynl.a