Github user andschwa commented on the issue:
https://github.com/apache/zookeeper/pull/499
The change is this:
```
-target_link_libraries(hashtable PUBLIC $<$<PLATFORM_ID:Linux>:m>)
+target_link_libraries(hashtable PUBLIC
$<$<OR:$<PLATFORM_ID:Linux>,$<PLATFORM_ID:FreeBSD>>:m>)
```
This code is not executed on Jenkins, so I don't see how it could be. I
double checked, it's still running the Autotools build, here's a snippet:
```
[exec] [exec] checking that generated files are newer than
configure... done
[exec] [exec] configure: creating ./config.status
[exec] [exec] config.status: creating Makefile
[exec] [exec] config.status: creating config.h
[exec] [exec] config.status: executing depfiles commands
[exec] [exec] config.status: executing libtool commands
```
---
