Questions[pango](ubuntu)

I am trying to install mblock. I have created a script:

#!/bin/bash
wget -O mblock.tar.gz https://github.com/Makeblock-official/mBlock/releases/download/V4.0.0-Linux/mBlock-4.0.0-linux-4.0.0.tar.gz
tar zxvf mblock.tar.gz
mv mBlock $HOME
cd $HOME
cd mBlock
./mblock

The following error message appears:

(mblock:65449): Pango-ERROR : 10:45:57.367: Harfbuzz version too old (1.2.7)

Thanks in advance!!

My ubuntu version is the following one:

NAME="Ubuntu"  
VERSION="20.04.3 LTS (Focal Fossa)"  
ID=ubuntu  
ID_LIKE=debian  
PRETTY_NAME="Ubuntu 20.04.3 LTS"  
VERSION_ID="20.04"  
HOME_URL="https://www.ubuntu.com/"  
SUPPORT_URL="https://help.ubuntu.com/"  
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"  
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"  
VERSION_CODENAME=focal  
UBUNTU_CODENAME=focal

I have tried installing using debian packages:

#!/bin/bash
wget -O mblock.deb http://mblockapp.oss-cn-hongkong.aliyuncs.com/mBlock4.0/mBlock_4.0.4_amd64.deb
sudo dpkg -i mblock.deb

Using debian packages the following message appears:

and with dmesg appears:

kern  :warn  : [  +4,352967] process 'opt/makeblock/mBlock/mblock' started with executable stack
kern  :info  : [  +0,829370] traps: mblock[3364] trap int3 ip:7fab7e5e5295 sp:7ffe5dba1020 error:0 in libglib-2.0.so.0.6400.6[7fab7e5a9000+84000]
kern  :info  : [feb18 17:54] traps: mblock[5485] trap int3 ip:7f0d85978295 sp:7ffc36c9ff40 error:0 in libglib-2.0.so.0.6400.6[7f0d8593c000+84000]

I am running Ubuntu 20.04 on WSL 2. I installed libpangocairo, but I can't find any of its header files.

I should have pangocairo installed:

$ apt list --installed|grep pango

WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

libpango-1.0-0/focal,now 1.44.7-2ubuntu4 amd64 [installed]
libpango-perl/focal,now 1.227-3build1 amd64 [installed]
libpangocairo-1.0-0/focal,now 1.44.7-2ubuntu4 amd64 [installed,automatic]
libpangoft2-1.0-0/focal,now 1.44.7-2ubuntu4 amd64 [installed,automatic]

But none of the header files exist:

$ find . -path ./mnt -prune -o -print |grep pango
./usr/lib/x86_64-linux-gnu/libpango-1.0.so.0.4400.7
./usr/lib/x86_64-linux-gnu/libpangocairo-1.0.so.0.4400.7
./usr/lib/x86_64-linux-gnu/libpangoft2-1.0.so.0
./usr/lib/x86_64-linux-gnu/libpangocairo-1.0.so.0
./usr/lib/x86_64-linux-gnu/libpangoft2-1.0.so.0.4400.7
./usr/lib/x86_64-linux-gnu/perl5/5.30/Pango/Install/pango-perl.typemap
./usr/lib/x86_64-linux-gnu/perl5/5.30/Pango/Install/pango-perl.h
./usr/lib/x86_64-linux-gnu/perl5/5.30/Pango/Install/pango-perl-autogen.h
./usr/lib/x86_64-linux-gnu/perl5/5.30/Pango/Install/pango-perl-versions.h
./usr/lib/x86_64-linux-gnu/perl5/5.30/Pango/Install/pango.typemap
./usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
./usr/share/doc/libpangocairo-1.0-0
./usr/share/doc/libpangocairo-1.0-0/changelog.Debian.gz
./usr/share/doc/libpangocairo-1.0-0/copyright
./usr/share/doc/libpango-1.0-0
./usr/share/doc/libpango-1.0-0/NEWS.gz
./usr/share/doc/libpango-1.0-0/README.md
./usr/share/doc/libpango-1.0-0/THANKS
./usr/share/doc/libpango-1.0-0/changelog.Debian.gz
./usr/share/doc/libpango-1.0-0/copyright
./usr/share/doc/libpango-perl
./usr/share/doc/libpango-perl/changelog.Debian.gz
./usr/share/doc/libpango-perl/examples
./usr/share/doc/libpango-perl/examples/cairo-simple.pl
./usr/share/doc/libpango-perl/copyright
./usr/share/doc/libpangoft2-1.0-0
./usr/share/doc/libpangoft2-1.0-0/changelog.Debian.gz
./usr/share/doc/libpangoft2-1.0-0/copyright
./var/lib/dpkg/info/libpangocairo-1.0-0:amd64.md5sums
./var/lib/dpkg/info/libpangoft2-1.0-0:amd64.triggers
./var/lib/dpkg/info/libpango-1.0-0:amd64.symbols
./var/lib/dpkg/info/libpangocairo-1.0-0:amd64.symbols
./var/lib/dpkg/info/libpangocairo-1.0-0:amd64.list
./var/lib/dpkg/info/libpango-1.0-0:amd64.triggers
./var/lib/dpkg/info/libpangoft2-1.0-0:amd64.symbols
./var/lib/dpkg/info/libpangocairo-1.0-0:amd64.shlibs
./var/lib/dpkg/info/libpango-perl.list
./var/lib/dpkg/info/libpango-1.0-0:amd64.md5sums
./var/lib/dpkg/info/libpangoft2-1.0-0:amd64.list
./var/lib/dpkg/info/libpango-perl.md5sums
./var/lib/dpkg/info/libpango-1.0-0:amd64.shlibs
./var/lib/dpkg/info/libpangoft2-1.0-0:amd64.md5sums
./var/lib/dpkg/info/libpango-1.0-0:amd64.list
./var/lib/dpkg/info/libpangocairo-1.0-0:amd64.triggers
./var/lib/dpkg/info/libpangoft2-1.0-0:amd64.shlibs
./var/cache/apt/archives/libpango-perl_1.227-3build1_amd64.deb
./var/cache/apt/archives/libpangoft2-1.0-0_1.44.7-2ubuntu4_amd64.deb

pkg-config returns nothing:

$ pkg-config --cflags --libs pangocairo
Package pangocairo was not found in the pkg-config search path.
Perhaps you should add the directory containing `pangocairo.pc'
to the PKG_CONFIG_PATH environment variable
No package 'pangocairo' found

I was trying to run this application but this error occurs on the startup of the application, is there a way to avoid this?

(wanna:90765): Pango-ERROR **: 03:53:41.569: Harfbuzz version too old (1.4.2)

Trace/breakpoint trap (core dumped)

I need libpangox-1.0-0:i386 to build a package under Ubuntu 20.04LTS, but it is not currently available. I have libpangox-1.0-0 in my system.

The 32 bit version is available for 19.10 and below at https://pkgs.org/download/libpangox-1.0-0 https://ubuntu.pkgs.org/19.10/ubuntu-universe-i386/libpangox-1.0-0_0.0.2-5build1_i386.deb.html

1. What are alternative ways to obtain this?

2. If I get the .deb file for 19.10 and run sudo gdebi libpangox-1.0-0_0.0.2-5build1_i386.deb, does it simply store files listed under "Files" in the web page, without any further changes to the system other than registering the package for dpkg?

   Can I give it a shot, try if it works, and if not simply remove the package? (there might be some issues, since files under /usr/share/doc/libpangox-1.0-0, even if only documentation, are shared among 32 bit and 64 bit versions). Note that the files in the package are only the so and a soft link to it, /usr/lib/i386-linux-gnu/libpangox-1.0.so.0 and /usr/lib/i386-linux-gnu/libpangox-1.0.so.0.0.0.

Notes: I never built something like this from source.

EDIT:

To avoid messing with dpkg, as a first attempt I expanded the .deb file, and copied the so and soft link by hand into /usr/lib/i386-linux-gnu. Then

$ export LD_LIBRARY_PATH="/usr/lib/i386-linux-gnu"
$ fakeroot debian/rules binary
...
dpkg-shlibdeps: error: no dependency information found for /usr/lib/i386-linux-gnu/libpangox-1.0.so.0 (used by debian/iscan/usr/bin/iscan)
Hint: check if the library actually comes from a package.

which led me to trying three workarounds at the same time:

1. Adding to debian/rules

    override_dh_shlibdeps:
    (tab)   dh_shlibdeps --dpkg-shlibdeps-params=--ignore-missing-info

2. $ export DEB_DH_SHLIBDEPS_ARGS_ALL=--dpkg-shlibdeps-params=--ignore-missing-info

3. $ export DEB_BUILD_OPTIONS=nocheck

None of this removed the error above.

EDIT #2.

Trying to build the library, I got the error

$ debuild -a i386
...
dpkg-deb: building package 'libpangox-1.0-dev' in '../libpangox-1.0-dev_0.0.2-5ubuntu1_i386.deb'.
 dpkg-genbuildinfo
 dpkg-genchanges  >../pangox-compat_0.0.2-5ubuntu1_i386.changes
dpkg-genchanges: info: not including original source code in upload
 dpkg-source --after-build .
dpkg-source: info: using options from pangox-compat-0.0.2/debian/source/options: --compression=xz
dpkg-buildpackage: info: binary and diff upload (original source NOT included)
debuild: fatal error at line 1062:
can't open pangox-compat_0.0.2-5ubuntu1_amd64.changes for reading: No such file or directory

Related:

https://stackoverflow.com/questions/11238134/dpkg-shlibdeps-error-no-dependency-information-found-for

https://linux.debian.user.narkive.com/tVuR0mKc/package-shared-library-with-application

https://github.com/SpiderLabs/ModSecurity-nginx/issues/16

https://www.man7.org/linux/man-pages/man1/dpkg-shlibdeps.1.html

https://ubuntu.com/blog/statement-on-32-bit-i386-packages-for-ubuntu-19-10-and-20-04-lts

I'm trying to configure wxWidgets 3.0.4 on Ubuntu 18.10:

$ ./configure --with-x11

But getting an error when running the config script:

checking for PANGOXFT... configure: error: pangoxft library not found, library cannot be compiled in Unicode mode

Is there an apt package containing the missing library, if yes, what is the exact name of it?

Offtopic: can anyone with reputation > 300 create a new tag "wxwidgets" and add it to the tags (or maybe replace "wxpython" if there is a limitation that the number of tags must be < 5)?