Makefile: require user to provide extract-vmlinux

extract-vmlinux is GPL licensed code which makes it harder for cilium to graduate in the CNCF. Remove the vendored copy and require the user to provide the binary instead. Use the full path in /lib/modules which seems to be fairly portable across Ubuntu, Arch and Fedora. Signed-off-by: Lorenz Bauer <[email protected]>
cilium · Jul 4, 2023 · 0f74f86 · 0f74f86
1 parent 8fa4c90
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diff --git a/Makefile b/Makefile
@@ -107,7 +107,7 @@ generate-btf: KERNEL_VERSION?=5.19
 generate-btf:
 	$(eval TMP := $(shell mktemp -d))
 	curl -fL "$(CI_KERNEL_URL)/linux-$(KERNEL_VERSION).bz" -o "$(TMP)/bzImage"
-	./testdata/extract-vmlinux "$(TMP)/bzImage" > "$(TMP)/vmlinux"
+	/lib/modules/$(uname -r)/build/scripts/extract-vmlinux "$(TMP)/bzImage" > "$(TMP)/vmlinux"
 	$(OBJCOPY) --dump-section .BTF=/dev/stdout "$(TMP)/vmlinux" /dev/null | gzip > "btf/testdata/vmlinux.btf.gz"
 	curl -fL "$(CI_KERNEL_URL)/linux-$(KERNEL_VERSION)-selftests-bpf.tgz" -o "$(TMP)/selftests.tgz"
 	tar -xf "$(TMP)/selftests.tgz" --to-stdout tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.ko | \

diff --git a/testdata/extract-vmlinux b/testdata/extract-vmlinux