[PATCH v2 06/15] tools/build: Add a feature test for bpftool-btf
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From: Gabriele Monaco <gmonaco@redhat.com>
Date: 2026-10-01 15:21:51
Also in:
bpf, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
Revision v2 of 2 in this series.
Revisions (2)
- rfc [diff vs current]
- v2 current
RV can run bpf monitors and also build them, only the latter requires the vmlinux.h from bpftool btf. Add a feature so that RV can be built with BPF support without having to build in-tree BPF monitors if not supported on the system. Signed-off-by: Gabriele Monaco <gmonaco@redhat.com> --- tools/build/Makefile.feature | 1 + tools/build/feature/Makefile | 7 ++++++- 2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
index 99eb0ea09537..18e3a7ae893a 100644
--- a/tools/build/Makefile.feature
+++ b/tools/build/Makefile.feature@@ -129,6 +129,7 @@ FEATURE_TESTS_EXTRA := \ libdebuginfod \ clang-bpf-co-re \ bpftool-skeletons \ + bpftool-btf \ libunwind \ libunwind-debug-frame \ $(foreach arch,$(LIBUNWIND_ARCHS),libunwind-$(arch) libunwind-debug-frame-$(arch))
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index 7d165018116a..2f01203dda5c 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile@@ -71,7 +71,8 @@ FILES= \ test-libpfm4.bin \ test-rust.bin \ test-libopenssl.bin \ - test-bpftool-skeletons.bin + test-bpftool-skeletons.bin \ + test-bpftool-btf.bin FILES := $(addprefix $(OUTPUT),$(FILES))
@@ -383,6 +384,10 @@ $(OUTPUT)test-bpftool-skeletons.bin: { $(SYSTEM_BPFTOOL) version | grep '^features:.*skeletons'; } \ > $(@:.bin=.make.output) 2>&1 && touch $@ +$(OUTPUT)test-bpftool-btf.bin: + $(SYSTEM_BPFTOOL) btf help \ + > $(@:.bin=.make.output) 2>&1 && touch $@ + # Testing Rust is special: we don't compile anything, it's enough to check the # compiler presence. Compiling a test code for this purposes is problematic, # because Rust will emit a dependency file without any external references,
--
2.55.0