A quickie FAQ_IRIX covering some known issues, from Luis Amigo.

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+=======================================================
+Frequently Asked Questions (FAQ) for PostgreSQL 7.2
+IRIX Specific
+TO BE READ IN CONJUNCTION WITH THE NORMAL FAQ
+=======================================================
+last updated:           $Date: 2001/12/03 19:33:35 $
+
+current maintainer:     Luis Amigo (lamigo@atc.unican.es)
+original author:        Luis Amigo (lamigo@atc.unican.es)
+
+
+Questions covered here:
+1.1)   What do I need to install PostgreSQL on IRIX?
+1.2)   Anything special about the build/install procedure?
+1.3)   OK, it seemed to build and install, but the regression test fails.
+
+
+----------------------------------------------------------------------
+Section 1:      Installing PostgreSQL
+----------------------------------------------------------------------
+
+1.1)   What do I need to install PostgreSQL on IRIX?
+
+PostgreSQL 7.2 has been run on MIPS r8000, r10000(both ip25 and ip27)
+and r12000(ip35) processors, running IRIX 6.5.5m, 6.5.12 and 6.5.13 with
+MIPSPro compilers version 7.30, 7.3.1.2m and 7.3. 
+
+Aside from the PostgreSQL source distribution, you will need GNU make
+(SGI's make will not do), and MIPSPro full ANSI C compiler.
+
+Until now there are problems trying to install with GNU's gcc, it is a known
+gcc bug (not fixed at current date, version 3.0) using functions that return
+some kind of structures. This bug affects functions like inet_ntoa,
+inet_lnaof, inet_netof, inet_makeaddr and semctl.  It is supposed to be fixed
+by forcing code to link those functions with libgcc, but this has not been
+tested yet.
+
+
+1.2)   Anything special about the build/install procedure?
+
+In order to compile with cc you will need to:
+
+configure with-CC=cc
+
+Or you may edit postgres.../src/templates/irix5
+
+including something like:
+
+CC=cc
+CFLAGS='-O2'
+LDFLAGS='-O2'
+
+It is a good place to improve performance on postgresql, because here you
+may use all MIPSPro power generating specific objects, see man cc.
+
+Other known problem is include location, it may be different from some
+compiler installations to others, if you are getting something like:
+
+cc-1020 cc: ERROR File = pqcomm.c, Line = 427
+  The identifier "TCP_NODELAY" is undefined.
+
+                if (setsockopt(port->sock, IPPROTO_TCP, TCP_NODELAY,
+
+Some versions include TCP definitions in <sys/xti.h>, so it is necessary to
+add #include <sys/xti.h> in /src/backend/libpq/pqcomm.c and in
+src/interfaces/libpq/fe-connect.c
+
+
+1.3)   OK, it seemed to build and install, but the regression test fails.
+
+There are several "expected failures" due to differences between your platform
+and the regression test reference platform used by the PostgreSQL group.  All
+of these should be compensated for by the regression test comparison
+mechanism, with the possible exception of some low-order-digit differences in
+the geometry tests (depending on which FPU are you using) or order differences
+between zero and NULL in join tests(depending on compiler version).
+
+Any other error is cause for suspicion.