Sources of libtracefs available at:
Git commit: 83323ad8695d3db29cfabdb57bf12a7683119dcb
Git repository: https://git.kernel.org/pub/scm/libs/libtrace/libtracefs.git


Build host info:

NAME="Alpine Linux"
ID=alpine
VERSION_ID=3.13.6
PRETTY_NAME="Alpine Linux v3.13"
HOME_URL="https://alpinelinux.org/"
BUG_REPORT_URL="https://bugs.alpinelinux.org/"


Build recipe:

export ARCH=x86
export LISA_ARCH_ASSETS=/lisa/_assets/binaries/x86
export LISA_HOME=''
export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
#! /bin/bash

ALPINE_VERSION=v3.13
ALPINE_BUILD_DEPENDENCIES=(bash gcc git make linux-headers musl-dev pkgconfig)
BROKEN_CROSS_COMPILATION=1

download() {
    # Official repo lacks some old version tags
    # git clone git://git.kernel.org/pub/scm/utils/trace-cmd/trace-cmd.git
    # So we use the personal one from Steven Rostedt
    git clone git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git

    # Latest available commit after 2.9.1.
    # 2.9.1 itself require some fixes.
    git -C trace-cmd checkout 2191498dc35d629003591f727b604120fabbe02d

    git clone https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git
    git -C libtraceevent checkout libtraceevent-1.1.2

    git clone https://git.kernel.org/pub/scm/libs/libtrace/libtracefs.git
    git -C libtracefs checkout libtracefs-1.0.2
}

build_libtraceevent() {
    cd libtraceevent
    make install
}

build_libtracefs() {
    cd libtracefs
    make install
}

build_tracecmd() {
    # Disable libaudit, to limit the amount of dependencies
    cd trace-cmd
    make LDFLAGS="-static" NO_AUDIT=yes
    strip "$TRACE_CMD_BIN"
}

# For trace-cmd v2.8.3
TRACE_CMD_BIN=tracecmd/trace-cmd

build() {
    export PYTHON_VERS=python3

    # Do this while waiting to have the build system working.
    # https://bugzilla.kernel.org/show_bug.cgi?id=212149
    # When fixed, replace this by what is adviced in trace-cmd/PACKAGING
    export prefix="/usr"
    export INSTALL_PATH="$(pwd)/installed_lib_dir"
    INCLUDE_PKG_PATH="$(cut -d':' -f1 <<<$(pkg-config --variable pc_path pkg-config))"
    export PKG_CONFIG="pkg-config --with-path $INSTALL_PATH/$INCLUDE_PKG_PATH --define-variable=prefix=$INSTALL_PATH/$prefix"
    export CFLAGS="-g -Wall -I$INSTALL_PATH/$prefix/include"
    export DESTDIR=$INSTALL_PATH

    (build_libtraceevent) && (build_libtracefs) && (build_tracecmd)
}

install() {
    cp -v trace-cmd/"$TRACE_CMD_BIN" "$LISA_ARCH_ASSETS/trace-cmd"

    source "$LISA_HOME/tools/recipes/utils.sh"
    # According to COPYING, the tools are distributed under GPL-2.0 whereas the
    # libraries are under LGLP-2.1.
    # Thus, use GPL-2.0 for trace-cmd and LGLP-2.1 for libtraceevent and
    # libtracefs.
    install_readme trace-cmd trace-cmd LICENSES/GPL-2.0
    install_readme libtraceevent libtraceevent LICENSES/LGPL-2.1
    install_readme libtracefs libtracefs LICENSES/LGPL-2.1
}


# Do not use libaudit unless there is a good reason, to avoid build issues in
# non-necessary dependencies
download_audit() {
    git clone https://github.com/linux-audit/audit-userspace.git
    git -C audit-userspace checkout master
}

build_audit() {
    cd audit-userspace
    ./autogen.sh
    ./configure --disable-shared
    make
}


The sources were distributed under the following licence (content of libtracefs/LICENSES/LGPL-2.1):

Valid-License-Identifier: LGPL-2.1
Valid-License-Identifier: LGPL-2.1+
SPDX-URL: https://spdx.org/licenses/LGPL-2.1.html
Usage-Guide:
  To use this license in source code, put one of the following SPDX
  tag/value pairs into a comment according to the placement
  guidelines in the licensing rules documentation.
  For 'GNU Lesser General Public License (LGPL) version 2.1 only' use:
    SPDX-License-Identifier: LGPL-2.1
  For 'GNU Lesser General Public License (LGPL) version 2.1 or any later
  version' use:
    SPDX-License-Identifier: LGPL-2.1+
License-Text:

GNU LESSER GENERAL PUBLIC LICENSE
Version 2.1, February 1999

Copyright (C) 1991, 1999 Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

Everyone is permitted to copy and distribute verbatim copies of this
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[This is the first released version of the Lesser GPL. It also counts as
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The sources were compiled with musl-libc (content of COPYRIGHT):

musl as a whole is licensed under the following standard MIT license:

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Authors/contributors include:

A. Wilcox
Ada Worcester
Alex Dowad
Alex Suykov
Alexander Monakov
Andre McCurdy
Andrew Kelley
Anthony G. Basile
Aric Belsito
Arvid Picciani
Bartosz Brachaczek
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Daniel Sabogal
Daurnimator
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David Edelsohn
Denys Vlasenko
Dmitry Ivanov
Dmitry V. Levin
Drew DeVault
Emil Renner Berthing
Fangrui Song
Felix Fietkau
Felix Janda
Gianluca Anzolin
Hauke Mehrtens
He X
Hiltjo Posthuma
Isaac Dunham
Jaydeep Patil
Jens Gustedt
Jeremy Huntwork
Jo-Philipp Wich
Joakim Sindholt
John Spencer
Julien Ramseier
Justin Cormack
Kaarle Ritvanen
Khem Raj
Kylie McClain
Leah Neukirchen
Luca Barbato
Luka Perkov
M Farkas-Dyck (Strake)
Mahesh Bodapati
Markus Wichmann
Masanori Ogino
Michael Clark
Michael Forney
Mikhail Kremnyov
Natanael Copa
Nicholas J. Kain
orc
Pascal Cuoq
Patrick Oppenlander
Petr Hosek
Petr Skocik
Pierre Carrier
Reini Urban
Rich Felker
Richard Pennington
Ryan Fairfax
Samuel Holland
Segev Finer
Shiz
sin
Solar Designer
Stefan Kristiansson
Stefan O'Rear
Szabolcs Nagy
Timo Teräs
Trutz Behn
Valentin Ochs
Will Dietz
William Haddon
William Pitcock

Portions of this software are derived from third-party works licensed
under terms compatible with the above MIT license:

The TRE regular expression implementation (src/regex/reg* and
src/regex/tre*) is Copyright © 2001-2008 Ville Laurikari and licensed
under a 2-clause BSD license (license text in the source files). The
included version has been heavily modified by Rich Felker in 2012, in
the interests of size, simplicity, and namespace cleanliness.

Much of the math library code (src/math/* and src/complex/*) is
Copyright © 1993,2004 Sun Microsystems or
Copyright © 2003-2011 David Schultz or
Copyright © 2003-2009 Steven G. Kargl or
Copyright © 2003-2009 Bruce D. Evans or
Copyright © 2008 Stephen L. Moshier or
Copyright © 2017-2018 Arm Limited
and labelled as such in comments in the individual source files. All
have been licensed under extremely permissive terms.

The ARM memcpy code (src/string/arm/memcpy.S) is Copyright © 2008
The Android Open Source Project and is licensed under a two-clause BSD
license. It was taken from Bionic libc, used on Android.

The AArch64 memcpy and memset code (src/string/aarch64/*) are
Copyright © 1999-2019, Arm Limited.

The implementation of DES for crypt (src/crypt/crypt_des.c) is
Copyright © 1994 David Burren. It is licensed under a BSD license.

The implementation of blowfish crypt (src/crypt/crypt_blowfish.c) was
originally written by Solar Designer and placed into the public
domain. The code also comes with a fallback permissive license for use
in jurisdictions that may not recognize the public domain.

The smoothsort implementation (src/stdlib/qsort.c) is Copyright © 2011
Valentin Ochs and is licensed under an MIT-style license.

The x86_64 port was written by Nicholas J. Kain and is licensed under
the standard MIT terms.

The mips and microblaze ports were originally written by Richard
Pennington for use in the ellcc project. The original code was adapted
by Rich Felker for build system and code conventions during upstream
integration. It is licensed under the standard MIT terms.

The mips64 port was contributed by Imagination Technologies and is
licensed under the standard MIT terms.

The powerpc port was also originally written by Richard Pennington,
and later supplemented and integrated by John Spencer. It is licensed
under the standard MIT terms.

All other files which have no copyright comments are original works
produced specifically for use as part of this library, written either
by Rich Felker, the main author of the library, or by one or more
contibutors listed above. Details on authorship of individual files
can be found in the git version control history of the project. The
omission of copyright and license comments in each file is in the
interest of source tree size.

In addition, permission is hereby granted for all public header files
(include/* and arch/*/bits/*) and crt files intended to be linked into
applications (crt/*, ldso/dlstart.c, and arch/*/crt_arch.h) to omit
the copyright notice and permission notice otherwise required by the
license, and to use these files without any requirement of
attribution. These files include substantial contributions from:

Bobby Bingham
John Spencer
Nicholas J. Kain
Rich Felker
Richard Pennington
Stefan Kristiansson
Szabolcs Nagy

all of whom have explicitly granted such permission.

This file previously contained text expressing a belief that most of
the files covered by the above exception were sufficiently trivial not
to be subject to copyright, resulting in confusion over whether it
negated the permissions granted in the license. In the spirit of
permissive licensing, and of not having licensing issues being an
obstacle to adoption, that text has been removed.
