I did found comilation errors in PLPlot 5.9.8.
This occurs with new things moved in deprecated section.
Joind is the output or command (with configuration options)
and 2 patches I made in order to compile but are certainly not correct for evrey case. they only show where I found the errors.
If I activate the CMAKE Boolean parameter PL_DEPRECATED it does not compile too but sooner in wrappers.