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| author | Tao Chen <chen.dylane@gmail.com> | 2024-04-29 00:10:32 +0800 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2024-04-29 16:10:03 -0700 |
| commit | 397658ddc88ce3c21d2aa3bed8e15fc69dfec946 (patch) | |
| tree | a3b94164746442be2099cba5133067d3698adbed | |
| parent | 0db63c0b86e981a1e97d2596d64ceceba1a5470e (diff) | |
samples/bpf: Add valid info for VMLINUX_BTF
When I use the command 'make M=samples/bpf' to compile samples/bpf code
in ubuntu 22.04, the error info occured:
Cannot find a vmlinux for VMLINUX_BTF at any of " /home/ubuntu/code/linux/vmlinux",
build the kernel or set VMLINUX_BTF or VMLINUX_H variable
Others often encounter this kind of issue, new kernel has the vmlinux, so we can
set the path in error info which seems more intuitive, like:
Cannot find a vmlinux for VMLINUX_BTF at any of " /home/ubuntu/code/linux/vmlinux",
buiild the kernel or set VMLINUX_BTF like "VMLINUX_BTF=/sys/kernel/btf/vmlinux" or
VMLINUX_H variable
Signed-off-by: Tao Chen <chen.dylane@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240428161032.239043-1-chen.dylane@gmail.com
| -rw-r--r-- | samples/bpf/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile index 933f6c3fe6b0..9aa027b144df 100644 --- a/samples/bpf/Makefile +++ b/samples/bpf/Makefile @@ -337,7 +337,7 @@ $(obj)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) ifeq ($(VMLINUX_H),) ifeq ($(VMLINUX_BTF),) $(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)",\ - build the kernel or set VMLINUX_BTF or VMLINUX_H variable) + build the kernel or set VMLINUX_BTF like "VMLINUX_BTF=/sys/kernel/btf/vmlinux" or VMLINUX_H variable) endif $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@ else |