Python and Matplotlib yields Relink libcairo & Segmentation fault

David_1 · 2019-10-19 21:43:11

Using Python 3.7.4 and Matplotlib 3.1.1, I receive the following error when importing pyplot:

  
[david@david-pc ~]$ which python
/usr/bin/python

  
[david@david-pc ~]$ python
Python 3.7.4 (default, Oct  4 2019, 06:57:26) 
[GCC 9.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import matplotlib
>>> matplotlib.__version__
'3.1.1'
>>> import matplotlib.pyplot
python: Relink `/usr/lib/libcairo.so.2' with `/usr/lib/librt.so.1' for IFUNC symbol `clock_gettime'
Segmentation fault (core dumped)

When using Python2.7 this does not occur:

  
[david@david-pc ~]$ python2.7
Python 2.7.16 (default, Mar 11 2019, 18:59:25) 
[GCC 8.2.1 20181127] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import matplotlib
>>> matplotlib.__version__
'2.2.4'
>>> import matplotlib.pyplot
>>>

I need to use Python3. I would appreciate very much if someone could help me
Many thanks

 
[david@david-pc ~]$ pacman -Qi python-matplotlib
Name            : python-matplotlib
Version         : 3.1.1-1
Description     : A python plotting library, making publication quality plots
Architecture    : x86_64
URL             : https://matplotlib.org
Licenses        : custom
Groups          : None
Provides        : None
Depends On      : freetype2  libpng  python-numpy  python-cycler  python-dateutil  python-kiwisolver  python-pyparsing
Optional Deps   : tk: Tk{Agg,Cairo} backends [installed]
                  python-pyqt5: Qt5{Agg,Cairo} backends [installed]
                  python-gobject: for GTK3{Agg,Cairo} backend [installed]
                  python-wxpython: WX{,Agg,Cairo} backend
                  python-cairo: {GTK3,Qt5,Tk,WX}Cairo backends [installed]
                  python-cairocffi: alternative for Cairo backends
                  python-tornado: WebAgg backend [installed]
                  ffmpeg: for saving movies [installed]
                  imagemagick: for saving animated gifs [installed]
                  python-pillow: for reading/saving jpeg/bmp/tiff files [installed]
                  ghostscript: usetex dependencies [installed]
                  texlive-bin: usetex dependencies
Required By     : None
Optional For    : vtk
Conflicts With  : None
Replaces        : None
Installed Size  : 25,50 MiB
Packager        : Bruno Pagani <archange@archlinux.org>
Build Date      : 2019-07-01T14:59:33 CEST
Install Date    : 2019-10-19T21:29:42 CEST
Install Reason  : Explicitly installed
Install Script  : No
Validated By    : Signature

Last edited by David_1 (2019-10-20 10:07:51)

Scimmia · 2019-10-19 22:34:47

And what version of cairo and glibc?

David_1 · 2019-10-19 23:05:20

Scimmia wrote:

And what version of cairo and glibc?

[david@david-pc ~]$ pacman -Qi cairo
Name            : cairo
Version         : 1.17.2+17+g52a7c79fd-2
Description     : 2D graphics library with support for multiple output devices
Architecture    : x86_64
URL             : https://cairographics.org/
Licenses        : LGPL  MPL
Groups          : None
Provides        : None
Depends On      : libpng  libxrender  libxext  fontconfig  pixman  glib2  lzo
Optional Deps   : None
Required By     : cairomm  fltk  frei0r-plugins  gjs  gnuplot  gst-plugins-good
                  gtk2  gtk3  libchamplain  pango  poppler  python-cairo
                  python2-cairo
Optional For    : harfbuzz  hwloc  python-gobject
Conflicts With  : None
Replaces        : None
Installed Size  : 3,43 MiB
Packager        : Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>
Build Date      : 2019-10-05T14:10:22 CEST
Install Date    : 2019-10-19T21:08:15 CEST
Install Reason  : Installed as a dependency for another package
Install Script  : No
Validated By    : Signature

[david@david-pc ~]$ pacman -Qi glibc
Name            : glibc
Version         : 2.30-1
Description     : GNU C Library
Architecture    : x86_64
URL             : https://www.gnu.org/software/libc
Licenses        : GPL  LGPL
Groups          : base
Provides        : None
Depends On      : linux-api-headers>=4.10  tzdata  filesystem
Optional Deps   : gd: for memusagestat [installed]
Required By     : a52dec  acpi  alsa-lib  argon2  attr  b43-fwcutter  bash
                  binutils  bison  bluez-libs  btrfs-progs  bubblewrap  bzip2
                  cdparanoia  cmark-gfm  coreutils  cpupower  cracklib  dav1d
                  device-mapper  dhclient  dhcpcd  diffutils  ding-libs  discount
                  dmidecode  dnsmasq  dosfstools  exfat-utils  expat  faad2
                  fakeroot  file  findutils  flex  fribidi  fuse2  fuse3  gavl
                  gawk  gcc-libs  gdbm  giflib  grep  gsl  gsm  gzip  haveged
                  hdparm  hspell  hyphen  ijs  iproute2  jack  jansson  jemalloc
                  jq  json-c  kbd  keyutils  kmod  l-smash  less  lib32-glibc
                  libaec  libass  libasyncns  libatomic_ops  libbsd  libcap
                  libcap-ng  libcddb  libcerf  libcue  libdatrie  libdvdcss
                  libdvdread  libepoxy  libevdev  libexif  libexttextcat  libffi
                  libfreexl  libgpg-error  libical  libice  libidn  libiptcdata
                  libksba  liblouis  libmms  libmnl  libmpcdec  libmpeg2  libndp
                  libnet  libnfnetlink  libnghttp2  libnl  libogg
                  libomxil-bellagio  libpcap  libpciaccess  libpgm  libpipeline
                  libraw1394  libseccomp  libsigsegv  libsodium  libstemmer
                  libsynctex  libtasn1  libtommath  libtool  libunistring
                  libunwind  libusb  libutempter  libuv  libvisual  libvterm
                  libwbclient  libxau  libxdg-basedir  libxdmcp  libxkbcommon
                  libxshmfence  libytnef  lmdb  lpsolve  lz4  lzo  m4  make  mdadm
                  metis  mkinitcpio-busybox  msgpack-c  mtdev  ncurses  nspr
                  nss-mdns  openal  opencore-amr  opus  orc  p11-kit  pacman  pam
                  patch  pciutils  pdflib-lite  perl  pixman  pkgconf  popt  ppp
                  psutils  qhull  readline  rhash  rpcbind  rtmpdump  run-parts
                  sbc  sdl  sdl2  sed  shaderc  sip  snappy  speexdsp  spglib
                  sudo  sysfsutils  systemd-libs  t1utils  talloc  tar  tree
                  tslib  twolame  unibilium  v86d  vid.stab  vim
                  vulkan-icd-loader  wavpack  wayland  wget  which
                  xf86-input-elographics  xf86-input-keyboard  xf86-input-mouse
                  xf86-input-void  xorg-bdftopcf  xvidcore  zita-alsa-pcmi
                  zita-resampler  zlib
Optional For    : None
Conflicts With  : None
Replaces        : None
Installed Size  : 46,01 MiB
Packager        : Allan McRae <allan@archlinux.org>
Build Date      : 2019-09-30T13:49:44 CEST
Install Date    : 2019-10-11T19:27:11 CEST
Install Reason  : Explicitly installed
Install Script  : Yes
Validated By    : Signature

Last edited by David_1 (2019-10-19 23:07:29)

Arch Linux

#1 2019-10-19 21:43:11

Python and Matplotlib yields Relink libcairo & Segmentation fault

#2 2019-10-19 22:34:47

Re: Python and Matplotlib yields Relink libcairo & Segmentation fault

#3 2019-10-19 23:05:20

Re: Python and Matplotlib yields Relink libcairo & Segmentation fault

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