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| author | Sirio Balmelli <sirio@b-ad.ch> | 2018-05-21 09:00:03 +0200 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2018-05-23 14:32:09 +0200 |
| commit | 167381f3eac0d9db82ad2c565048bfea8fb01574 (patch) | |
| tree | 899d008f78649be357a1f8cb5c49100694f3ab67 /kernel/bpf/btf.c | |
| parent | ff4fb475cea8580eb0490d0a5d55ee02d95d26e1 (diff) | |
selftests/bpf: Makefile fix "missing" headers on build with -idirafter
Selftests fail to build on several distros/architectures because of
missing headers files.
On a Ubuntu/x86_64 some missing headers are:
asm/byteorder.h, asm/socket.h, asm/sockios.h
On a Debian/arm32 build already fails at sys/cdefs.h
In both cases, these already exist in /usr/include/<arch-specific-dir>,
but Clang does not include these when using '-target bpf' flag,
since it is no longer compiling against the host architecture.
The solution is to:
- run Clang without '-target bpf' and extract the include chain for the
current system
- add these to the bpf build with '-idirafter'
The choice of -idirafter is to catch this error without injecting
unexpected include behavior: if an arch-specific tree is built
for bpf in the future, this will be correctly found by Clang.
Signed-off-by: Sirio Balmelli <sirio@b-ad.ch>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'kernel/bpf/btf.c')
0 files changed, 0 insertions, 0 deletions