linux/tools
Kamal Mostafa 1a3449c194 selftests/bpf: Clarify build error if no vmlinux
If Makefile cannot find any of the vmlinux's in its VMLINUX_BTF_PATHS list,
it tries to run btftool incorrectly, with VMLINUX_BTF unset:

    bpftool btf dump file $(VMLINUX_BTF) format c

Such that the keyword 'format' is misinterpreted as the path to vmlinux.
The resulting build error message is fairly cryptic:

      GEN      vmlinux.h
    Error: failed to load BTF from format: No such file or directory

This patch makes the failure reason clearer by yielding this instead:

    Makefile:...: *** Cannot find a vmlinux for VMLINUX_BTF at any of
    "{paths}".  Stop.

Fixes: acbd06206b ("selftests/bpf: Add vmlinux.h selftest exercising tracing of syscalls")
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20201215182011.15755-1-kamal@canonical.com
2020-12-16 10:04:34 -08:00
..
accounting
arch x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes 2020-12-06 09:58:13 +01:00
bootconfig tools/bootconfig: Store size and checksum in footer as le32 2020-11-30 23:22:11 -05:00
bpf Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-12-11 22:29:38 -08:00
build Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-11-14 09:13:41 -08:00
cgroup blk-iocost: update iocost_monitor.py 2020-09-01 19:38:33 -06:00
debugging docs: Update documentation to reflect what TAINT_CPU_OUT_OF_SPEC means 2020-12-08 10:53:58 -07:00
edid
firewire
firmware
gpio tools: gpio: add debounce support to gpio-event-mon 2020-09-30 10:57:30 +02:00
hv
iio iio: add IIO_MOD_O2 modifier 2020-08-22 10:53:12 +01:00
include Networking updates for 5.11 2020-12-15 13:22:29 -08:00
io_uring tools/io_uring: fix compile breakage 2020-09-21 07:50:58 -06:00
kvm/kvm_stat tools/kvm_stat: Exempt time-based counters 2020-12-11 19:18:51 -05:00
laptop
leds
lib Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-12-14 15:34:36 -08:00
memory-model tools/memory-model: Label MP tests' producers and consumers 2020-11-06 17:25:17 -08:00
objtool tools: Factor HOSTCC, HOSTLD, HOSTAR definitions 2020-11-11 12:18:22 -08:00
pci
pcmcia
perf Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-12-03 15:44:09 -08:00
power Networking updates for 5.11 2020-12-15 13:22:29 -08:00
scripts tools: Factor HOSTCC, HOSTLD, HOSTAR definitions 2020-11-11 12:18:22 -08:00
spi
testing selftests/bpf: Clarify build error if no vmlinux 2020-12-16 10:04:34 -08:00
thermal/tmon
time
usb tools: usb: move to tools buildsystem 2020-08-19 14:11:44 +02:00
virtio virtio: fixes, features 2020-08-11 14:34:17 -07:00
vm mm: Add PG_arch_2 page flag 2020-09-04 12:46:06 +01:00
wmi
Makefile