[Bug 2015748] Re: Lib jemalloc building problem
Roberto Bartzen Acosta
2015748 at bugs.launchpad.net
Fri Feb 9 12:17:02 UTC 2024
After a long discussion on the ovs-dev mailing list [1], we decided not
promote any changes in the openvswitch source code as the problem is not
directly related to ovs. Therefore, a note has been added to the
documentation to announce possible linker problems when trying to use
the libjemalloc [2].
[1] https://mail.openvswitch.org/pipermail/ovs-dev/2024-January/411246.html
[2] https://github.com/openvswitch/ovs/commit/2832faa22aa09b4bde51381fdfe730161fa22248
** Changed in: openvswitch (Ubuntu)
Status: In Progress => Invalid
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https://bugs.launchpad.net/bugs/2015748
Title:
Lib jemalloc building problem
Status in openvswitch package in Ubuntu:
Invalid
Bug description:
Hey folks,
I'm trying to build the openvswitch on an Ubuntu jammy (22.04.2 LTS)
and passing the parameter LIBS=-ljemalloc in configure according to
the documentation:
https://readthedocs.org/projects/openvswitch/downloads/pdf/stable/
(Release 3.1.1)
I see the build process using this lib but I don't see the linker step
applying the shared lib in the binary.
...
test -d _debian || mkdir _debian
cd _debian && ( \
test -e Makefile || \
../configure --prefix=/usr --localstatedir=/var --enable-ssl LIBS=-ljemalloc \
--sysconfdir=/etc \
...
/bin/bash ./libtool --tag=CC --mode=link gcc -Wstrict-prototypes -Wall -Wextra -Wno-sign-compare -Wpointer-arith -Wformat -Wformat-security -Wswitch-enum -Wunused-parameter -Wbad-function-cast -Wcast-align -Wstrict-prototypes -Wold-style-definition -Wmissing-prototypes -Wmissing-field-initializers -fno-strict-aliasing -Wswitch-bool -Wlogical-not-parentheses -Wsizeof-array-argument -Wbool-compare -Wshift-negative-value -Wduplicated-cond -Wshadow -Wmultistatement-macros -Wcast-align=strict -g -O2 -ffile-prefix-map=/home/roberto/dev_jammy/network-dev-ovs-ubuntu=. -flto=auto -ffat-lto-objects -flto=auto -ffat-lto-objects -fstack-protector-strong -Wformat -Werror=format-security -fPIC -Wl,-Bsymbolic-functions -flto=auto -ffat-lto-objects -flto=auto -Wl,-z,relro -Wl,-z,now -o utilities/ovs-appctl utilities/ovs-appctl.o lib/libopenvswitch.la -latomic -lnuma -lbpf -lm -ljemalloc -lunbound -lunwind
...
The binary dependencies are listed below:
dpkg -I ../openvswitch-switch_3.1.0-2_amd64.deb
new Debian package, version 2.0.
size 1607488 bytes: control archive=4475 bytes.
99 bytes, 3 lines conffiles
1300 bytes, 24 lines control
2685 bytes, 37 lines md5sums
5778 bytes, 147 lines * postinst #!/bin/sh
3599 bytes, 109 lines * postrm #!/bin/sh
2464 bytes, 65 lines * preinst #!/bin/sh
1030 bytes, 37 lines * prerm #!/bin/sh
Package: openvswitch-switch
Source: openvswitch
Version: 3.1.0-2
Architecture: amd64
Maintainer: Debian OpenStack <team+openstack at tracker.debian.org>
Installed-Size: 4780
Pre-Depends: init-system-helpers (>= 1.54~)
Depends: kmod | module-init-tools, netbase, openvswitch-common (= 3.1.0-2), procps, python3-netifaces, python3-openvswitch (>= 3.1.0-2), uuid-runtime, python3:any, libbpf0 (>= 5.4), libc6 (>= 2.34), libcap-ng0 (>= 0.7.9), libnuma1 (>= 2.0.11), libssl3 (>= 3.0.0~~alpha1), libunbound8 (>= 1.8.0), libunwind8
Breaks: openvswitch-common (<< 2.17~)
Replaces: openvswitch-common (<< 2.17~)
Section: net
Priority: optional
Homepage: http://openvswitch.org/
Description: Open vSwitch switch implementations
Open vSwitch is a production quality, multilayer, software-based,
Ethernet virtual switch. It is designed to enable massive network
automation through programmatic extension, while still supporting
standard management interfaces and protocols (e.g. NetFlow, IPFIX,
sFlow, SPAN, RSPAN, CLI, LACP, 802.1ag). In addition, it is designed
to support distribution across multiple physical servers similar to
VMware's vNetwork distributed vswitch or Cisco's Nexus 1000V.
.
openvswitch-switch provides the userspace components and utilities for
the Open vSwitch kernel-based switch.
...
I expected to see the link looking at the binary with readelf:
Ubuntu jammy (22.04.2 LTS)
Dynamic section at offset 0x26c348 contains 36 entries:
Tag Type Name/Value
0x0000000000000001 (NEEDED) Shared library: [libssl.so.3]
0x0000000000000001 (NEEDED) Shared library: [libcrypto.so.3]
0x0000000000000001 (NEEDED) Shared library: [libcap-ng.so.0]
0x0000000000000001 (NEEDED) Shared library: [libnuma.so.1]
0x0000000000000001 (NEEDED) Shared library: [libbpf.so.0]
0x0000000000000001 (NEEDED) Shared library: [libm.so.6]
0x0000000000000001 (NEEDED) Shared library: [libunbound.so.8]
0x0000000000000001 (NEEDED) Shared library: [libunwind.so.8]
0x0000000000000001 (NEEDED) Shared library: [libc.so.6]
0x0000000000000001 (NEEDED) Shared library: [ld-linux-x86-64.so.2]
0x000000000000000c (INIT) 0x22000
0x000000000000000d (FINI) 0x1e7374
If I build the same code base with an Ubuntu Focal, the link with libjemalloc works fine.
e.g. Ubuntu Focal: 20.04 LTS
Dynamic section at offset 0x2c3230 contains 39 entries:
Tag Type Name/Value
0x0000000000000001 (NEEDED) Shared library: [libssl.so.3]
0x0000000000000001 (NEEDED) Shared library: [libcrypto.so.3]
0x0000000000000001 (NEEDED) Shared library: [libcap-ng.so.0]
0x0000000000000001 (NEEDED) Shared library: [libnuma.so.1]
0x0000000000000001 (NEEDED) Shared library: [libbpf.so.0]
0x0000000000000001 (NEEDED) Shared library: [libpthread.so.0]
0x0000000000000001 (NEEDED) Shared library: [librt.so.1]
0x0000000000000001 (NEEDED) Shared library: [libm.so.6]
0x0000000000000001 (NEEDED) Shared library: [libjemalloc.so.2]
0x0000000000000001 (NEEDED) Shared library: [libunbound.so.8]
0x0000000000000001 (NEEDED) Shared library: [libunwind.so.8]
0x0000000000000001 (NEEDED) Shared library: [libc.so.6]
0x0000000000000001 (NEEDED) Shared library: [ld-linux-x86-64.so.2]
0x000000000000000c (INIT) 0x27000
0x000000000000000d (FINI) 0x1fd0c4
Maybe I'm missing something, any idea why I'm not linking?
Kind regards,
Roberto
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