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Q2.0.11: SXEmacs doesn’t resolve hostnames.

This is the result of a long-standing problem with SunOS and the fact that stock SunOS systems do not ship with DNS resolver code in libc.

Christopher Davis writes:

That’s correct [The SunOS 4.1.3 precompiled binaries don’t do name lookup]. Since Sun figured that everyone used NIS to do name lookups (that DNS thing was apparently only a passing fad, right?), the stock SunOS 4.x systems don’t have DNS-based name lookups in libc.

This is also why Netscape ships two binaries for SunOS 4.1.x.

The best solution is to compile it yourself; the configure script will check to see if you’ve put DNS in the shared libc and will then proceed to link against the DNS resolver library code.