Pizzly keeps complaining about missing pthreads library - any idea anyone?

[Steffen Möller <steffen_moeller@gmx.de>]

Hello,

Please someone help me out. Pizzly is lintian clean when built
"regularly" on my desktop but fails with

/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_8a4be.dir/link.txt
--verbose=1
/usr/bin/c++  -g -O2 -fdebug-prefix-map=/build/pizzly-0.37.3=.
-fstack-protector-strong -Wformat -Werror=format-security -Wall
-pedantic -Wdate-time -D_FORTIFY_SOURCE=2
-DCHECK_FUNCTION_EXISTS=pthread_create  -Wl,-z,relro -Wl,-z,now
-Wl,--as-needed  -rdynamic
CMakeFiles/cmTC_8a4be.dir/CheckFunctionExists.cxx.o  -o cmTC_8a4be
-lpthreads
/usr/bin/ld: cannot find -lpthreads

in pbuilder. All you need is here
https://salsa.debian.org/med-team/pizzly :)

I just don't see it.

Many thanks

Steffen