On POSIX platforms, OpenJDK builds a library, libsyslookup.so, which it uses to lookup C library symbols via dlsym. The file used to build this library, syslookup.c, has no functions, just a header import.

This causes problems with our tooling that expects the library to have the properties of a regular library e.g. debuginfo, recorded compiler flags. On some architectures & platforms, this makes it impossible to build an RPM.

Adding a simple function to the file seems to help things.