openharmony/third_party_libbpf
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Andrii Nakryiko 92cb475558 makefile: fix install target 
After latest shared vs static libraries fixes, `make install` target
broke as it relied on now removed $(LIBS) variable. This patch fixes
issue by listing $(SHARED_LIBS) and $(STATIC_LIBS) explicitly.

Tested with and without BUILD_STATIC_ONLY.

Fixes: 8b2782a1f2 ("makefile: support libbpf symbol versioning in shared library mode")
Reported-by: Michal Rostecki <mrostecki@opensuse.org>
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
2019-10-01 12:56:22 -07:00
include libbpf: add flags to umem config 2019-09-26 13:29:16 -07:00
scripts scripts: fix empty cherry-pick handling, fix IGNORE_CONSISTENCY check 2019-09-30 15:02:52 -07:00
src makefile: fix install target 2019-10-01 12:56:22 -07:00
travis-ci/managers Travis CI: add sanity check for libelf dependency 2019-09-26 00:41:27 -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 2019-09-30 16:10:45 -07:00
CHECKPOINT-COMMIT sync: latest libbpf changes from kernel 2019-09-30 16:10:45 -07:00
meson.build add meson.build for meson build system 2019-04-15 21:39:11 -07:00
README.md Fix up README's markdown formatting 2019-05-16 09:39:52 -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

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