Re: [gentoo-dev] [PATCH] systemd.eclass: remove SYSROOT from pkg-config output

[Mike Gilbert <floppym@gentoo.org>]

On Mon, Jan 4, 2021 at 6:45 PM Mike Gilbert <floppym@gentoo.org> wrote:
>
> On Mon, Jan 4, 2021 at 6:18 PM James Le Cuirot <chewi@gentoo.org> wrote:
> > $ PKG_CONFIG_SYSROOT_DIR=/foo pkg-config --variable=udevdir udev
> > /lib/udev
> >
> > The udevdir variable is not affected by PKG_CONFIG_SYSROOT_DIR at all.
> > And why would it be? The man page says that this variable is only
> > applied to -I and -L flags. I don't know for sure but I suspect that
> > pkg-config just sees this as some arbitrary variable with no special
> > path handling at all. I wonder what led you to think that this fix was
> > necessary?
>
> Interesting!
>
> pkg-config behaves differently on my system:
>
> % PKG_CONFIG_SYSROOT_DIR=/foo pkg-config --variable=udevdir udev
> /foo/lib/udev
>
> This appears to be a difference in behavior between dev-util/pkgconfig
> and dev-util/pkgconf. I am using pkgconf, and I would guess you are
> using pkgconfig.
>
> I guess I will ask pkgconf upstream for help on this; it seems like
> this is probably an unintended behavior.

It seems that the pkgconf behavior is intentional.

https://github.com/pkgconf/pkgconf/issues/69

I opened an issue to see if we can get some kind of opt-out.

https://github.com/pkgconf/pkgconf/issues/205