openharmony/third_party_libbpf
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Andrii Nakryiko 4a50ceb043 Makefile: back-port _FILE_OFFSET_BITS=64 and _LARGEFILE64_SOURCE to Makefile 
Upstream commit 71dd77fd4bf7 ("libbpf: use LFS (_FILE_OFFSET_BITS) instead
of direct mmap2 syscall") added _FILE_OFFSET_BITS=64 and
_LARGEFILE64_SOURCE CFLAGS. Back-port them to Github's mirror to avoid
compilation problems on ARM.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
2019-10-22 14:50:23 -07:00
include uapi/bpf: fix helper docs 2019-10-09 14:42:45 -07:00
scripts sync: adjust sync script for test_libbpf.c rename and bpf_helper_defs.h 2019-10-15 19:43:48 -07:00
src Makefile: back-port _FILE_OFFSET_BITS=64 and _LARGEFILE64_SOURCE to Makefile 2019-10-22 14:50:23 -07:00
travis-ci/managers ci: disable GCC's -Wstringop-truncation noisy error 2019-10-15 19:43:48 -07:00
.travis.yml Travis CI: add gcc-8, gcc-8 ASan+UBSan tests 2019-04-30 11:39:37 -07:00
BPF-CHECKPOINT-COMMIT sync: latest libbpf changes from kernel 2019-10-15 19:43:48 -07:00
CHECKPOINT-COMMIT sync: latest libbpf changes from kernel 2019-10-15 19:43:48 -07:00
README.md meson: kill meson.build as it's not used anymore 2019-10-01 16:51:32 -07:00

README.md

This is a mirror of bpf-next linux tree's tools/lib/bpf directory plus its supporting header files.

The following files will by sync'ed with bpf-next repo:

  • src/ <-> bpf-next/tools/lib/bpf/
  • include/uapi/linux/bpf_common.h <-> bpf-next/tools/include/uapi/linux/bpf_common.h
  • include/uapi/linux/bpf.h <-> bpf-next/tools/include/uapi/linux/bpf.h
  • include/uapi/linux/btf.h <-> bpf-next/tools/include/uapi/linux/btf.h
  • include/uapi/linux/if_link.h <-> bpf-next/tools/include/uapi/linux/if_link.h
  • include/uapi/linux/if_xdp.h <-> bpf-next/tools/include/uapi/linux/if_xdp.h
  • include/uapi/linux/netlink.h <-> bpf-next/tools/include/uapi/linux/netlink.h
  • include/tools/libc_compat.h <-> bpf-next/tools/include/tools/libc_compat.h

Other header files at this repo (include/linux/*.h) are reduced versions of their counterpart files at bpf-next's tools/include/linux/*.h to make compilation successful.

Build Build Status

libelf is an internal dependency of libbpf and thus it is required to link against and must be installed on the system for applications to work. pkg-config is used by default to find libelf, and the program called can be overridden with PKG_CONFIG. If using pkg-config at build time is not desired, it can be disabled by setting NO_PKG_CONFIG=1 when calling make.

To build both static libbpf.a and shared libbpf.so:

$ cd src
$ make

To build only static libbpf.a library in directory build/ and install them together with libbpf headers in a staging directory root/:

$ cd src
$ mkdir build root
$ BUILD_STATIC_ONLY=y OBJDIR=build DESTDIR=root make install

To build both static libbpf.a and shared libbpf.so against a custom libelf dependency installed in /build/root/ and install them together with libbpf headers in a build directory /build/root/:

$ cd src
$ PKG_CONFIG_PATH=/build/root/lib64/pkgconfig DESTDIR=/build/root make install