Gtk's detection problem with pkg-config

[Andreas Metzler]

On 2023-05-22 alexandre schenberg <ale.schenberg-zJpx2rpV7r/QT0dZR+AlfA at public.gmane.org> wrote:
> Hi. While trying to build an old gimp version, I found a bunch of problems with Gimp's configure gtk detection code.
> One of them is related to pkg-config. This line: " if $PKG_CONFIG --atleast-version $min_gtk_version $pkg_config_args;"
> should evaluate to true. However, by some mysterious way, is not. But why? I checked the value of its variables:
>  $PKG_CONFIG is equal to /usr/bin/pkg-config 
>  $min_gtk_version is equal to 2.12.5
>  $pkg_config_args is equal to gtk+-2.0 gthread-2.0

> The first two are ok and the third seems ok at first glance

> I am passing Gtk's pkgconfig config with:
> PKG_CONFIG_PATH=/media/34GB/Arquivos-de-Programas-Linux/Gtk+-2.24.20/lib/pkgconfig/:
> with is also okay.

> So I would deeply appreciate if someone has any suggestions about the
> reason this if clause is failing to evaluate as true

Did you test that
/usr/bin/pkg-config --atleast-version 2.12.5 gtk+-2.0 gthread-2.0
does not succeed?

Do you have gtk+-2.0.pc and gthread-2.0.pc in
PKG_CONFIG_PATH=/media/34GB/Arquivos-de-Programas-Linux/Gtk+-2.24.20/lib/pkgconfig/
?

cu Andreas

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