[PATCH] UBUNTU: [Packaging] do not attempt to generate BTF header on armhf

[luca.boccassi at gmail.com]

From: Luca Boccassi <bluca at debian.org>

BugLink: https://bugs.launchpad.net/bugs/2050083

armhf does not have working BTF for now, so create an empty header file
like Debian does for now, to be dropped once that issue is fixed.

Follow-up for 60df5eb6035b53143695d8e6a6bff62a05fd0884

Signed-off-by: Luca Boccassi <bluca at debian.org>
---
 debian/rules.d/2-binary-arch.mk | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/debian/rules.d/2-binary-arch.mk b/debian/rules.d/2-binary-arch.mk
index 792276bf8458..5486ceb672f8 100644
--- a/debian/rules.d/2-binary-arch.mk
+++ b/debian/rules.d/2-binary-arch.mk
@@ -659,7 +659,12 @@ ifeq ($(do_tools_perf),true)
 endif
 	mv $(builddirpa)/tools/bpf/bpftool/vmlinux $(builddirpa)/vmlinux
 	$(kmake) NO_LIBTRACEEVENT=1 CROSS_COMPILE=$(CROSS_COMPILE) -C $(builddirpa)/tools/bpf/bpftool
+	# TODO: armhf does not have working BTF, so ship a stub header for now, can be removed once it's fixed
+ifneq ($(arch),armhf)
 	$(builddirpa)/tools/bpf/bpftool/bpftool btf dump file $(builddirpa)/vmlinux format c > $(builddirpa)/vmlinux.h
+else
+	echo '#error "Kernel does not support CONFIG_DEBUG_INFO_BTF"' > $(builddirpa)/vmlinux.h
+endif
 	rm -f $(builddirpa)/vmlinux
 ifeq ($(do_tools_x86),true)
 	cd $(builddirpa)/tools/power/x86/x86_energy_perf_policy && make CROSS_COMPILE=$(CROSS_COMPILE)
-- 
2.39.2