Getting undefined reference to `g_object_new_with_properties'

[gummybears]

Not sure what is happening here, but most of the samples don't work anymore

$ crystal version
Crystal 0.34.0 [4401e90f0] (2020-04-06)

LLVM: 8.0.0
Default target: x86_64-unknown-linux-gnu

shard.yml

dependencies:
  gobject:
    github: jhass/crystal-gobject
    version: ~> 0.8.0

Error when trying to run a sample

crystal build gtk_menu_and_actions.cr 
M-yA-pplication.o: In function `initialize:application_id':
/home/laptop/try/gtk/lib/gobject/samples/lib/gobject/gtk/gtk.cr:4: undefined reference to `g_object_new_with_properties'
G-tk5858A-pplicationW-indow.o: In function `initialize:application:title:default_width:default_height:icon_name':
/home/laptop/try/gtk/lib/gobject/samples/lib/gobject/gtk/gtk.cr:4: undefined reference to `g_object_new_with_properties'
G-tk5858M-enuI-tem.o: In function `initialize:label':
/home/laptop/try/gtk/lib/gobject/samples/lib/gobject/gtk/gtk.cr:4: undefined reference to `g_object_new_with_properties'
collect2: error: ld returned 1 exit status
Error: execution of command failed with code: 1: `cc "${@}" -o '/home/laptop/try/gtk/lib/gobject/samples/gtk_menu_and_actions'  -rdynamic  -lgdk-3 -lgtk-3 -lgio-2.0 -lgobject-2.0 -lglib-2.0 -lgobject-2.0 -lglib-2.0 -lpcre -lm /usr/bin/../lib/crystal/lib/libgc.a -lpthread /usr/share/crystal/src/ext/libcrystal.a -levent -lrt -ldl -L/usr/bin/../lib/crystal/lib -L/usr/bin/../lib/crystal/lib`

[hugopl]

What's GTK version you have installed? The samples works here with GTK version 3.24.21.

[gummybears]

Linux Mint 18.2, GTK version 3.18.9

[hugopl]

The binding generator now rely on g_object_new_with_properties to be able to construct objects passing the properties on constructor, however this function is only available since GLib version 2.54. So you need to upgrade your gtk3, 😞 , since I think there's no reason for a project like this to support old versions of GLib.

I thinks this deserves a mention on README.

[hugopl]

So... what's your GLib version? Since this function comes from GObject library, that is usually in glib package.

[gummybears]

I think my GLib version is too old.

$ dpkg -l gir1.2-glib-2.0       
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                                      Version                   Architecture              Description
+++-=========================================-=========================-=========================-========================================================================================
ii  gir1.2-glib-2.0:amd64                     1.46.0-3ubuntu1           amd64                     Introspection data for GLib, GObject, Gio and GModule

[hugopl]

I guess this is the package for introspection of the glib package, not the glib package itself, since for sure your glib is 2.something.

[gummybears]

Not sure how to determine the GLib version, but it is safe to say it is not the most recent.

[jhass]

What's your output of:

crystal eval 'require "gobject"; require_gobject("GLib"); puts "#{GLib::MAJOR_VERSION}.#{GLib::MINOR_VERSION}.#{GLib::MICRO_VERSION}"'
cat /etc/os-release

[gummybears]

$ crystal eval 'require "gobject"; require_gobject("GLib"); puts "#{GLib::MAJOR_VERSION}.#{GLib::MINOR_VERSION}.#{GLib::MICRO_VERSION}"'
2.47.3

$ cat /etc/os-release
NAME="Ubuntu"
VERSION="16.04 LTS (Xenial Xerus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.04 LTS"
VERSION_ID="16.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
UBUNTU_CODENAME=xenial

[jhass]

So yeah, that's 4 years old :/ https://gitlab.gnome.org/GNOME/glib/-/tags/2.47.3

gobject_new_with_properties was added with 2.54, which is 2 years old: https://gitlab.gnome.org/GNOME/glib/-/tags/2.54.0

The 18.04 Ubuntu LTS release ships 2.56: https://packages.ubuntu.com/bionic/libglib2.0-0

The 20.04 Ubuntu LTS release ships 2.64: https://packages.ubuntu.com/focal/libglib2.0-0

So I'm not sure it's worth to support such an old distro to be honest :/

[gummybears]

No, you are right, I need to upgrade.
Thanks for your time and help.