476e158b07
Syncing latest libbpf commits from kernel repository. Baseline bpf-next commit: b753c5a7f99f390fc100de18647ce0dcacdceafc Checkpoint bpf-next commit: 0bb52b0dfc88a155688f492aba8e686147600278 Baseline bpf commit: 91b4db5313a2c793aabc2143efb8ed0cf0fdd097 Checkpoint bpf commit: 2c238177bd7f4b14bdf7447cc1cd9bb791f147e6 Andrii Nakryiko (1): libbpf: make libbpf.map source of truth for libbpf version Ivan Khoronzhuk (1): libbpf: use LFS (_FILE_OFFSET_BITS) instead of direct mmap2 syscall Magnus Karlsson (1): libbpf: add support for need_wakeup flag in AF_XDP part Peter Wu (1): bpf: sync bpf.h to tools/ Quentin Monnet (3): tools: bpf: synchronise BPF UAPI header with tools libbpf: refactor bpf_*_get_next_id() functions libbpf: add bpf_btf_get_next_id() to cycle through BTF objects Stanislav Fomichev (1): bpf: sync bpf.h to tools/ include/uapi/linux/bpf.h | 12 ++++++--- include/uapi/linux/if_xdp.h | 13 +++++++++ src/bpf.c | 24 ++++++++--------- src/bpf.h | 1 + src/libbpf.map | 5 ++++ src/xsk.c | 53 +++++++++++++------------------------ src/xsk.h | 6 +++++ 7 files changed, 64 insertions(+), 50 deletions(-) -- 2.17.1
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.hinclude/uapi/linux/bpf.h<->bpf-next/tools/include/uapi/linux/bpf.hinclude/uapi/linux/btf.h<->bpf-next/tools/include/uapi/linux/btf.hinclude/uapi/linux/if_link.h<->bpf-next/tools/include/uapi/linux/if_link.hinclude/uapi/linux/if_xdp.h<->bpf-next/tools/include/uapi/linux/if_xdp.hinclude/uapi/linux/netlink.h<->bpf-next/tools/include/uapi/linux/netlink.hinclude/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 
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
To integrate libbpf into a project which uses Meson building system define
[wrap-git] file in subprojects folder.
To add libbpf dependency to the parent parent project, e.g. for
libbpf_static_dep:
libbpf_obj = subproject('libbpf', required : true)
libbpf_static_dep = libbpf_proj.get_variable('libbpf_static_dep')
To validate changes to meson.build
$ python3 meson.py build
$ ninja -C build/
To install headers, libs and pkgconfig
$ cd build
$ ninja install