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linux/tools/include
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Andrii Nakryiko a778f5d46b tools/headers: Pull in stddef.h to uapi to fix BPF selftests build in CI 
With recent sync of linux/in.h tools/include headers are now relying on
__DECLARE_FLEX_ARRAY macro, which isn't itself defined inside
tools/include headers anywhere and is instead assumed to be present in
system-wide UAPI header. This breaks isolated environments that don't
have kernel UAPI headers installed system-wide, like BPF CI ([0]).

To fix this, bring in include/uapi/linux/stddef.h into tools/include.
We can't just copy/paste it, though, it has to be processed with
scripts/headers_install.sh, which has a dependency on scripts/unifdef.
So the full command to (re-)generate stddef.h for inclusion into
tools/include directory is:

  $ make scripts_unifdef && \
    cp $KBUILD_OUTPUT/scripts/unifdef scripts/ && \
    scripts/headers_install.sh include/uapi/linux/stddef.h tools/include/uapi/linux/stddef.h

This assumes KBUILD_OUTPUT envvar is set and used for out-of-tree builds.

  [0] https://github.com/kernel-patches/bpf/actions/runs/3379432493/jobs/5610982609

Fixes: 036b8f5b89 ("tools headers uapi: Update linux/in.h copy")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: https://lore.kernel.org/bpf/20221102182517.2675301-2-andrii@kernel.org
2022-11-03 13:45:21 +01:00
..
asm nds32: Remove the architecture 2022-03-07 13:54:59 +01:00
asm-generic hugetlb_encode.h: fix undefined behaviour (34 << 26) 2022-10-03 14:02:55 -07:00
linux - Yu Zhao's Multi-Gen LRU patches are here. They've been under test in 2022-10-10 17:53:04 -07:00
nolibc tools/nolibc: make sys_mmap() automatically use the right __NR_mmap definition 2022-08-31 05:17:43 -07:00
tools tools include: add dis-asm-compat.h to handle version differences 2022-08-01 15:29:49 -03:00
trace/events
uapi tools/headers: Pull in stddef.h to uapi to fix BPF selftests build in CI 2022-11-03 13:45:21 +01:00
vdso tools headers: Synchronize linux/bits.h with the kernel sources 2020-04-14 11:40:05 -03:00