Build failure on Mint/Ubuntu

[hristoast]

Building OpenMW fails with this:

[100%] Linking CXX executable ../../openmw
/usr/bin/ld: /opt/morrowind/osg-openmw/lib/libosgDB.so: undefined reference to symbol 'inflateInit2_'
//lib/x86_64-linux-gnu/libz.so.1: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
apps/openmw/CMakeFiles/openmw.dir/build.make:6432: recipe for target 'openmw' failed
make[2]: *** [openmw] Error 1
CMakeFiles/Makefile2:437: recipe for target 'apps/openmw/CMakeFiles/openmw.dir/all' failed
make[1]: *** [apps/openmw/CMakeFiles/openmw.dir/all] Error 2
Makefile:127: recipe for target 'all' failed
make: *** [all] Error 2

I'm not clear on why libz or libosgDB are mentioned; I've tried building OSG with explicit LDFLAGS but that was unsuccessful as well.