To build the library for HP workstations running HP-UX, use Makefile.hpux10. When SPRLIB is compiled using make shared, a shared library libspr_hpux10.so.3.1 is made. Note: Makefile.hpux10.DBG creates a library compiled with the -g compiler flag, so that programs using it can be debugged with a debugger (gdb/xxgdb/ddd). The debug version is called sprg_hpux10.a.