| 1 |
On Mon, Jan 4, 2021 at 6:18 PM James Le Cuirot <chewi@g.o> wrote: |
| 2 |
> $ PKG_CONFIG_SYSROOT_DIR=/foo pkg-config --variable=udevdir udev |
| 3 |
> /lib/udev |
| 4 |
> |
| 5 |
> The udevdir variable is not affected by PKG_CONFIG_SYSROOT_DIR at all. |
| 6 |
> And why would it be? The man page says that this variable is only |
| 7 |
> applied to -I and -L flags. I don't know for sure but I suspect that |
| 8 |
> pkg-config just sees this as some arbitrary variable with no special |
| 9 |
> path handling at all. I wonder what led you to think that this fix was |
| 10 |
> necessary? |
| 11 |
|
| 12 |
Interesting! |
| 13 |
|
| 14 |
pkg-config behaves differently on my system: |
| 15 |
|
| 16 |
% PKG_CONFIG_SYSROOT_DIR=/foo pkg-config --variable=udevdir udev |
| 17 |
/foo/lib/udev |
| 18 |
|
| 19 |
This appears to be a difference in behavior between dev-util/pkgconfig |
| 20 |
and dev-util/pkgconf. I am using pkgconf, and I would guess you are |
| 21 |
using pkgconfig. |
| 22 |
|
| 23 |
I guess I will ask pkgconf upstream for help on this; it seems like |
| 24 |
this is probably an unintended behavior. |
| 25 |
|
| 26 |
> One last question. Why is this dynamic at all? Shouldn't it just be |
| 27 |
> hardcoded to /lib/udev? Sure, a user could patch udev to make it |
| 28 |
> something different if they really wanted but there are plenty of other |
| 29 |
> paths we just assume. What makes this one special? |
| 30 |
|
| 31 |
sys-apps/systemd has a USE flag called "split-usr". This is meant to |
| 32 |
allow users to perform a /usr merge if desired. When split-usr is |
| 33 |
disabled, udevdir becomes /usr/lib/udev instead of /lib/udev. |
Archives