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| author | Jinghao Jia <jinghao7@illinois.edu> | 2025-02-03 02:55:05 -0600 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2025-02-05 16:53:44 -0800 |
| commit | 94f53edc64e19640b5245721cd6d0c4a84f52587 (patch) | |
| tree | f155d3f51c7a515cc7f31a7cc33c8114aedf2191 | |
| parent | 2a9d30fac818ffc97ecfa2f71019181a631b9c9b (diff) | |
samples/bpf: Fix broken vmlinux path for VMLINUX_BTF
Commit 13b25489b6f8 ("kbuild: change working directory to external
module directory with M=") changed kbuild working directory of bpf
sample programs to samples/bpf, which broke the vmlinux path for
VMLINUX_BTF, as the Makefiles assume the current work directory to be
the kernel output directory and use a relative path (i.e., ./vmlinux):
Makefile:316: *** Cannot find a vmlinux for VMLINUX_BTF at any of " /path/to/linux/samples/bpf/vmlinux", build the kernel or set VMLINUX_BTF like "VMLINUX_BTF=/sys/kernel/btf/vmlinux" or VMLINUX_H variable. Stop.
Correctly refer to the kernel output directory using $(objtree).
Fixes: 13b25489b6f8 ("kbuild: change working directory to external module directory with M=")
Signed-off-by: Jinghao Jia <jinghao7@illinois.edu>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Tested-by: Ruowen Qin <ruqin@redhat.com>
Link: https://lore.kernel.org/bpf/20250203085506.220297-3-jinghao7@illinois.edu
| -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 dd9944a97b7e..5b632635e00d 100644 --- a/samples/bpf/Makefile +++ b/samples/bpf/Makefile @@ -307,7 +307,7 @@ $(obj)/$(TRACE_HELPERS): TPROGS_CFLAGS := $(TPROGS_CFLAGS) -D__must_check= VMLINUX_BTF_PATHS ?= $(abspath $(if $(O),$(O)/vmlinux)) \ $(abspath $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux)) \ - $(abspath ./vmlinux) + $(abspath $(objtree)/vmlinux) VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) $(obj)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) |