[cairo] libcairo2-dev

Thu Apr 9 12:00:23 UTC 2020

Hello Tadeus,

My wordings were "So I'm sure other people are touched by this inconvenience, so your help is needed." 

Are you or anyone able/willing to reproduce the issue?   Cause without reproducing it, there is no way for you guys to be sure that the package is actually causing any problems.  I pasted the old email at the end below cause it has the steps to reproduce.

Good day to you and thanks,

Anwar

N.B. Antonio’s advice is a good last resort.  But I think a lot of developers would want to have their environment setup from source (https://www.gtk.org/docs/installations/linux/).  So if we fix it it’d help everyone.

-----Original Message-----
From: Tadeus Prastowo [mailto:tadeus.prastowo at unitn.it] 
Sent: Thursday, April 9, 2020 6:49 AM
To: Anwar Moukaddem <anwar.moukaddem at gmail.com>
Cc: cairo at cairographics.org
Subject: Re: [cairo] libcairo2-dev

On Wed, Apr 8, 2020 at 11:35 PM Anwar Moukaddem
<anwar.moukaddem at gmail.com <mailto:anwar.moukaddem at gmail.com> > wrote:
>
> Hi !
>
> It's not uncommon to use self-compiled packages.

Yes, but you then are responsible to get things right on your own, not
simply saying that Cairo developers are at fault.

> What's needed in my case is to compile from source because that's the most reliable way to get the exact versions in the link https://www.gtk.org/docs/installations/linux/
>
> It's harder with APT to meet exact version numbers.

So, your e-mail is already off-topic for this mailing list: the
problem is not Cairo but the way you configure your custom system.

By following Antonio's advice, you will already get whatever you need
to develop GTK3 software on your Ubuntu 18.04 system; there is no need
to get the exact versions given in the link
https://www.gtk.org/docs/installations/linux/.

If following Antonio's advice you find out that you miss something to
develop your GTK3 software, you should post in the Ubuntu
forum/mailing list that deals with GTK3, not here.

Good luck!

> Anwar

-- 
Best regards,
Tadeus

Hi !

It's not uncommon to use self-compiled packages.  

What's needed in my case is to compile from source because that's the most reliable way to get the exact versions in the link https://www.gtk.org/docs/installations/linux/ 

It's harder with APT to meet exact version numbers. 

Anwar

-----Original Message-----
From: Tadeus Prastowo [mailto:tadeus.prastowo at unitn.it] 
Sent: Wednesday, April 8, 2020 5:07 PM
To: Anwar Moukaddem <anwar.moukaddem at gmail.com>
Cc: cairo at cairographics.org
Subject: Re: [cairo] libcairo2-dev

On Wed, Apr 8, 2020 at 10:57 PM Anwar Moukaddem
<anwar.moukaddem at gmail.com> wrote:
>
> Hello Tadeus,
>
> You get the recommendation straight from the source : https://www.gtk.org/docs/installations/linux/
> I am installing a development environment.  The installed packages are not dev packages.   You can download the sources from the link and that's what I did.

Ubuntu 18.04 comes with those dev packages already.  Why don't you try
to find all packages listed in
http://archive.ubuntu.com/ubuntu/dists/bionic/main/binary-amd64/Packages.xz
that matches the regex pattern "^Packages: .+-dev" ?  For example, I
can see the following package that should interest you, especially if
you see its dependency list:

Package: libgtk-3-dev
Architecture: amd64
Version: 3.22.30-1ubuntu1
Multi-Arch: same
Priority: optional
Section: libdevel
Source: gtk+3.0
Origin: Ubuntu
Maintainer: Ubuntu Developers <ubuntu-devel-discuss at lists.ubuntu.com>
Original-Maintainer: Debian GNOME Maintainers
<pkg-gnome-maintainers at lists.alioth.debian.org>
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 10899
Depends: libgtk-3-0 (= 3.22.30-1ubuntu1), gir1.2-gtk-3.0 (=
3.22.30-1ubuntu1), libgtk-3-common, dconf-gsettings-backend |
gsettings-backend, libglib2.0-dev (>= 2.49.4), libgdk-pixbuf2.0-dev
(>= 2.30.0), libpango1.0-dev (>= 1.40.5), libatk1.0-dev (>= 2.15.1),
libatk-bridge2.0-dev, libcairo2-dev (>= 1.14.0), libepoxy-dev (>=
1.0), libfontconfig1-dev, libx11-dev, libxext-dev, libxinerama-dev,
libxi-dev, libxrandr-dev, libxcursor-dev, libxfixes-dev,
libxcomposite-dev, libxdamage-dev, pkg-config, libegl1-mesa-dev,
libwayland-dev (>= 1.9.91), wayland-protocols (>= 1.9),
libxkbcommon-dev
Suggests: libgtk-3-doc
Filename: pool/main/g/gtk+3.0/libgtk-3-dev_3.22.30-1ubuntu1_amd64.deb
Size: 896856
MD5sum: c012e7cc07777856ab7ddae9e096f0c8
SHA1: c710df89535fe40f5fe60e18e94733fdc16711df
SHA256: 19eb2c6960ec575b5e9ccdd2e4ff6344fdb0a201f3c30b482fbc9603752b25cc
Homepage: https://www.gtk.org/
Description: development files for the GTK+ library
Description-md5: 5e247317651e3625eb226ee49f0cfec7
Supported: 5y

Now, do you think you still need to perform your custom steps on Ubuntu 18.04?

> The list I provided is based on that.
> This is why the dependencies were important to install and one of the dependencies is libcairo2-dev.
> Anwar

-- 
Best regards,
Tadeus

Hello Tadeus,

My requirement is simple.  GTK3+ recommends packages that I've listed below.   These in turn have dependencies.

In order to satisfy the dependencies, all the steps below are required in that order.  When I say "required" I am basing myself on : Error messages received during installation.  
After each such error messages I am repeating the whole installation (no pollution possible).
This is why, installation steps below are all required to compile and build GTK3+ dependencies.

So as for Tadeus comment about "own steps", these are really steps imposed by the single requirement of installing GTK3+ development environment on a Ubuntu machine.   That includes gobject/pango/cairo.

Anwar

N.B. I tried this both on an amd64 physical system and on a virtual machine, result is the same.

-----Original Message-----
From: Tadeus Prastowo [mailto:tadeus.prastowo at unitn.it] 
Sent: Wednesday, April 8, 2020 4:00 PM
To: Anwar Moukaddem <anwar.moukaddem at gmail.com>
Cc: cairo at cairographics.org
Subject: Re: [cairo] libcairo2-dev

On Wed, Apr 8, 2020 at 7:21 PM Anwar Moukaddem
<anwar.moukaddem at gmail.com> wrote:
>
> Hello Bryce & List,
>
> I compiled steps to reproduce:
>
> GTK3+ recommends the following packages :
>
>         atk-2.26.1.tar.xz
>
>         gdk-pixbuf-2.38.2.tar.xz
>
>         glib-2.60.7.tar.xz
>
>         gobject-introspection-1.60.2.tar.x
>
>         gtk+-3.24.16.tar.xz
>
>         gtk-doc-mainline.zip
>
>         libcairo2-dev_1.14.6-1_amd64.deb
>
>         meson-0.54.0.tar.gz
>
>         pango-1.42.4.tar.xz
>
> We're only building/installing those, with their dependencies, on a fresh Ubuntu.   Nothing else.   So I'm sure other people are touched by this inconvenience, so your help is needed.
>
> Here are the steps :
>
> - installing fresh ubuntu ubuntu-18.04.4-desktop-amd64.iso
>
> - installing video card
>
> - package : python3.8-minimal
>
> - sudo ln -s /usr/bin/python3.8 /usr/bin/python

This is your own step.

> - package: python-pip
>
> - sudo rm /usr/bin/python
>
> - sudo ln -s /usr/bin/python3.8 /usr/bin/python

These two are also yours.

> - package python3-pip
>
> - Install meson (meson-0.54.0 )
>
> - sudo ln -s /opt/install/meson-0.54.0/meson.py /usr/bin/meson

Yours too.

> - package ninja-build
>
> - package git
>
> - package pkg-config
>
> - python -m pip install python-config
>
> - package python-setuptools
>
> - python -m pip install setuptools
>
> - package libmount-dev
>
> - extracting glib (glib-2.60.7) source code then running
>
> sudo meson _build
>
> sudo ninja -C _build
>
> sudo ninja -C _build install

These too.

> - package gtk-doc-tools, fontconfig, autoconf, dh-autoreconf, flex, bison, autoconf-archive
>
> - installing object is done by extracting gobject-introspection-1.60.2.tar.x and then running :
>
> *       meson _build                       *
>
> *       ninja -C _build                    *
>
> *       sudo ninja -C _build install       *

These too.

> - REBOOTING WORKS HERE !!!!
>
> - Now try install libcairo2-dev then reboot, the display doesn't work.
>
> You are still able to SSH into the machine, so I can definitely help you here.

Since you perform your own custom steps, then one of those may have
screwed something up.  What goes wrong, unfortunately, you have to
find out.

BTW, why do you need to perform such custom steps?

> Anwar

-- 
Best regards,
Tadeus
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