pkg/59614: FTBFS lowdown on Debian 12

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>Number:         59614
>Category:       pkg
>Synopsis:       FTBFS lowdown on Debian 12
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Aug 28 18:10:01 +0000 2025
>Originator:     Piper McCorkle
>Release:        pkgsrc HEAD 8/28/2025
>Organization:
>Environment:
$ uname -a
Linux ma 6.1.0-37-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.140-1 (2025-05-22) x86_64 GNU/Linux
$ lsb_release -a
No LSB modules are available.
Distributor ID:	Debian
Description:	Debian GNU/Linux 12 (bookworm)
Release:	12
Codename:	bookworm
>Description:
lowdown-2.0.2 FTBFS on Debian 12 with unprivileged pkgsrc.

Full build log: https://pastebin.com/1rqbtFLH

Error:

/usr/bin/ld: .libs/main.o: in function `main':
main.c:(.text.startup+0x177e): undefined reference to `getprogname'
/usr/bin/ld: main.c:(.text.startup+0x19d7): undefined reference to `strtonum'
/usr/bin/ld: main.c:(.text.startup+0x1ad6): undefined reference to `strtonum'
/usr/bin/ld: main.c:(.text.startup+0x1b63): undefined reference to `strtonum'
/usr/bin/ld: main.c:(.text.startup+0x1baa): undefined reference to `strtonum'
/usr/bin/ld: main.c:(.text.startup+0x1bee): undefined reference to `strtonum'
/usr/bin/ld: .libs/main.o:main.c:(.text.startup+0x1f01): more undefined references to `strtonum' follow
--- lowdown-diff ---
/usr/bin/ld: .libs/main.o: in function `main':
main.c:(.text.startup+0x177e): undefined reference to `getprogname'
/usr/bin/ld: main.c:(.text.startup+0x19d7): undefined reference to `strtonum'
/usr/bin/ld: main.c:(.text.startup+0x1ad6): undefined reference to `strtonum'
/usr/bin/ld: main.c:(.text.startup+0x1b63): undefined reference to `strtonum'
/usr/bin/ld: main.c:(.text.startup+0x1baa): undefined reference to `strtonum'
/usr/bin/ld: main.c:(.text.startup+0x1bee): undefined reference to `strtonum'
/usr/bin/ld: .libs/main.o:main.c:(.text.startup+0x1f01): more undefined references to `strtonum' follow
>How-To-Repeat:

>Fix: