Pps-tools: ppsldisc.c Undeclared Identifier Cross-Compiling on Debian 11 (Bullseye)

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1 
ppsldisc.c: In function 'main':
ppsldisc.c:39:14: error: 'N_PPS' undeclared (first use in this function); did you mean 'N_PPP'?
  int ldisc = N_PPS;
              ^~~~~
              N_PPP
ppsldisc.c:39:14: note: each undeclared identifier is reported only once for each function it appears in
make[3]: *** [<builtin>: ppsldisc.o] Error 1
2

Please post output of

ubus call system board

From your OpenWrt device

and

lsb_release -a

from build system

3

The ubus command isn't available on my OpenWRT device.

From the build system:

$ lsb_release -a
No LSB modules are available.
Distributor ID:	Debian
Description:	Debian GNU/Linux 11 (bullseye)
Release:	11
Codename:	bullseye
4

This clearly indicates that your device is not running firmware from the official OpenWrt project. Please reach out to the vendor of the device and/or the provider/maintainer of the firmware you are using.

2 Likes
5

Come on… this is a compiling question… can’t we at least determine what version is being compiled or what build system before closing the door?

pps-tools is an OpenWrt package.
The fact N_PPS is not defined and it exists in one place in the kernel (linux/tty.h) tells me that CONFIG_PPS is perhaps not turned on in the kernel.
Or it’s a bad attempt at cross compiling.

6

The reason we can confidently say that this is not official OpenWrt (and not simply an issue of compiling source from the official project) is this:

That said, if the OP can provide the brand+model of their device, maybe OpenWrt (official) is available.

7

This happens when build system is far apart from OpenWrt SDK in time, modiifications must be made in OEM SDK < OpenWrt 18, absence of ubus means it might even be some other buildroot...

8

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