[solved] [gtk-rs] cannot build gtk-rs (3) example app

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#1

[solved info] in the docs, the latest version is not always at the top or bottom.

Hi.
Im trying out gtk-rs for the first time.
Trying out the example “basics”.
it wont build because the version of glib-2.0 is less than required.

“cargo:warning="pkg-config" "--libs" "--cflags" "glib-2.0" "glib-2.0 >= 2.48" did not exit successfully: exit status: 1
error: could not find system library ‘glib-2.0’ required by the ‘glib-sys’ crate
— stderr Requested ‘glib-2.0 >= 2.48’ but version of GLib is 2.9.6”

error says glib version is less than the glib-2.0 required.
why does the request associate GLib with glib-2.0?
where does the request constraint come from? glib-sys?
are the constraints set by pkg-config flags? i havent modified the default flags, dont know how to.

have the latest glib (aka GLib) latest is 2.9.6 according to download.gnome.org/sources/glib.
installed the package libgtk-3-dev (libgtk-4-dev doesnt exist yet - edit: for MY distro (kubuntu)).

how to resolve this issue?
-#-

#2

Latest GLib at this point is 2.72.1 and 2.9.6 is from 2006. Your version is simply too old.

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#3

thanks for your reply.
so i checked again and saw that the list in the sources is in alphabetical not numerical order, and the latest is not at the bottom.
will install the latest version.

#4

If you installed GTK via your package manager then you should also install GLib via the package manager. Should probably be called something like libglib2.0-dev.

If libgtk-4-dev does not exist then your distro is simply not shipping GTK4 yet and is too old for GTK4 development.

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#5

thanks @sdroege
i installed from source, and it fixed the issue.
is glib2.0 not included with ‘libgtk-3-dev’?
perhaps my trying to install gtk-4 from source caused my issue? i gave up on that when it almost instantly became a wild goose chase of errors. then settled on having only gtk-3.

#6

GLib is a separate library to Gtk, though your packager should be smart enough to automatically install it. If it didn’t, you should raise an issue with them.

1 Like
#7

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