Without this patch, make crashes with:

PGC-S-0239-Unmatched #else (../ncurses/expanded.c: 61)
PGC-S-0240-Unmatched #endif (../ncurses/expanded.c: 63)
PGC/x86-64 Linux 16.5-0: compilation completed with severe errors
make[1]: *** [../obj_s/expanded.o] Error 2

This patch came from the developer, and should be included in the next release.

Even with this patch, the PGI build failed with dozens of lines like:

ld: ../obj_s/hardscroll.o: relocation R_X86_64_32 against `.rodata' can not be used when making a shared object; recompile with -fPIC

Adding CFLAGS=-fPIC and CXXFLAGS=-fPIC solved this problem.

Also converted to AutotoolsPackage while I was at it. Also locked down the previous patch to @6.0 only as it wouldn't apply to @5.9.