commit | 483a8c238fbd83c24d560fa0b993717a9bb8e9d4 | [log] [tgz] |
---|---|---|
author | Andrii Nakryiko <andriin@fb.com> | Mon Mar 02 16:32:32 2020 -0800 |
committer | Andrii Nakryiko <andrii.nakryiko@gmail.com> | Thu Mar 12 22:57:51 2020 -0700 |
tree | 6645c71ed8f19dab3bc917fc560fd4c265b83acb | |
parent | 26cbe2384c6e80df309e9570867c6c375a3240e7 [diff] |
libbpf: Assume unsigned values for BTF_KIND_ENUM Currently, BTF_KIND_ENUM type doesn't record whether enum values should be interpreted as signed or unsigned. In Linux, most enums are unsigned, though, so interpreting them as unsigned matches real world better. Change btf_dump test case to test maximum 32-bit value, instead of negative value. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20200303003233.3496043-3-andriin@fb.com
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.
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
Distributions packaging libbpf from this mirror:
Benefits of packaging from the mirror over packaging from kernel sources:
Package dependencies of libbpf, package names may vary across distros:
This work is dual-licensed under BSD 2-clause license and GNU LGPL v2.1 license. You can choose between one of them if you use this work.
SPDX-License-Identifier: BSD-2-Clause OR LGPL-2.1