Re: solaris libpq threaded build fails

Bruce Momjian wrote:
> I supposed Solaris 2.5.1 (release 1996) is just too old to add
> threading, and this code has been unchanged for years.
> 

Yeah, its old.  Unfortunately for us, we still have to support it.

To set the record straight, the issue is not threads.  Threads work fine 
on 2.5.1.  This is a configure system linking issue, "gethostbyname" 
requires linking with libnsl.so.  So, thread_test.c must link with -lnsl.

The bigger issue is that the configure script needs to include -lnsl for 
older solaris platforms.  Solaris 2.5.1 has "gethostbyname_r" but the 
configure check fails for the same reason.

configure:19821: checking for gethostbyname_r
configure:19877: gcc -o conftest -O2 -Wall [...snip...]
Undefined     first referenced symbol           in file
gethostbyname_r                     /var/tmp//ccSuGLEn.o  (symbol 
belongs to implicit dependency /usr/lib/libnsl.so.1)
ld: fatal: Symbol referencing errors. No output written to conftest
collect2: ld returned 1 exit status

This is why thread_test.c thought it had to fall back on gethostbyname 
in the first place.

-- 
Andrew Chernow
eSilo, LLC
every bit counts
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