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171 lines
7.2 KiB
Plaintext
171 lines
7.2 KiB
Plaintext
=======================================================
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Frequently Asked Questions (FAQ) for PostgreSQL V6.4
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HP-UX Specific
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TO BE READ IN CONJUNCTION WITH THE NORMAL FAQ
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=======================================================
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last updated: Sat Nov 28 16:21:25 EST 1998
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current maintainer: Tom Lane (tgl@sss.pgh.pa.us)
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original author: Tom Lane (tgl@sss.pgh.pa.us)
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Questions covered here:
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1.1) What do I need to install PostgreSQL on HP-UX?
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1.2) Anything special about the build/install procedure?
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1.3) yacc dies trying to process src/backend/parser/gram.y.
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1.4) Linking the main postgres executable fails, complaining that
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there's no "alloca" function.
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1.5) OK, it seemed to build and install, but the regression test fails.
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----------------------------------------------------------------------
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Section 1: Installing PostgreSQL
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----------------------------------------------------------------------
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1.1) What do I need to install PostgreSQL on HP-UX?
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PostgreSQL 6.4 is known to build and pass regression test on HPUX 9.03,
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9.05, and 10.20, given appropriate system patch levels and build tools.
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It should work on other HPUX 9.* and 10.* releases for Series 700/800
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machines, too. (No one has reported trying it with HPUX 11 yet.)
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Since this is a new FAQ, I don't yet have a lot of information about the
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exact prerequisites, but I'd appreciate hearing from anyone who fails to
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build a working copy, so that we can add more info about exactly what is
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needed.
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Aside from PostgreSQL 6.4 or later sources, you will need GNU make
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(HP's make will not do), and either GNU gcc or HP's full ANSI C compiler.
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You must also get flex (GNU lex) 2.5.4 or later --- all versions of
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HP's lex fail on the Postgres lexer files.
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I'd also recommend making sure you are fairly up-to-date on HP patches,
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particularly if you are using HPUX 9. At a minimum, if you are on HPUX 9,
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you *must* have PHSS_4630 (libm update) or a successor patch; otherwise
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Postgres' date/time functions will misbehave. On general principles you
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should be current on libc and ld/dld patches, as well as compiler
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patches if you are using HP's C compiler (but I don't currently know of
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any specific failures due to not having recent patches for these files).
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See HP's support websites, such as http://us-support.external.hp.com/,
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for free copies of their latest patches.
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PostgreSQL 6.3.2 and earlier required quite a few small tweaks to
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install on HPUX, so I recommend you not bother with anything older
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than 6.4.
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1.2) Anything special about the build/install procedure?
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When you run configure, you will want to explicitly select either the
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hpux_cc or hpux_gcc template depending on which compiler you plan to
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use:
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./configure --with-template=hpux_cc
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for HP's C compiler, or
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./configure --with-template=hpux_gcc
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for GNU gcc. (If you omit --with-template, configure may either
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default to hpux_cc or give up entirely, depending on which HPUX and
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PostgreSQL releases you have.)
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You may want to tweak the CFLAGS setting in template/hpux_[g]cc before
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you configure; the distributed files contain neither -O nor -g switches,
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which is hardly optimal for any situation. I've seen no problems using
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-O with gcc 2.7.2.*.
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The default install target location is /usr/local/pgsql, which
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(particularly on HPUX 10) you might want to change to something under
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/opt. If so, use the --prefix switch to configure.
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If you have both HP and GNU C++ compilers in your PATH, keep an eye on
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whether configure picks the right one --- you want the HP c++ if you are
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using HP C, or g++ if you are using gcc. Mixing HP and GNU compilers
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won't work. You may need to provide a --with-CXX=compiler switch to
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force configure to pick the matching C++ compiler, or even say
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--without-CXX if you have a C++ compiler but it doesn't match the C
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compiler you want to use.
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Otherwise the standard build/install procedure described in the
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PostgreSQL documentation works fine.
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1.3) yacc dies trying to process src/backend/parser/gram.y.
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HP's yacc doesn't create its tables large enough to handle the Postgres
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grammar (a lot of other vendors' yaccs have this problem too). There
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are three possible workarounds:
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1. The quickest answer is just to "touch" src/backend/parser/gram.c
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and src/backend/parser/parse.h and repeat the build. Any PostgreSQL
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distribution file should have up-to-date copies of those files included,
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so you shouldn't need to run yacc on gram.y at all ... but sometimes
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gram.y mistakenly has a newer timestamp in the distribution than the
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derived files do.
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2. Install "bison" (GNU yacc) and reconfigure. Bison doesn't have a
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problem with large grammars. Note this is not the right choice if you
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are using HP's cc on HPUX 9 --- see next item.
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3. Increase yacc's table sizes enough to cope. With a pre-6.4
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PostgreSQL grammar, I was able to get HPUX 9's yacc to work by
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setting YFLAGS to
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-d -Np2000 -Ns3000 -Nm100000 -Nl2000 -Na30000 -Nc10000
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(You can edit YFLAGS either in the template file before running
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configure, or in src/Makefile.global afterwards.) Future PostgreSQL
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releases might require even larger tables, but this should do for
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a starting point.
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1.4) Linking the main postgres executable fails, complaining that
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there's no "alloca" function.
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If you're using HP's cc on HPUX 9, it's right: there's no alloca
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function. The only place in PostgreSQL that uses alloca is the parser
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(gram.c), and that does so only if it was generated with GNU bison.
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Unfortunately the distribution copy of gram.c is made with bison.
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There are several possible answers:
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1. Remake gram.c with HP's yacc (see above item for switch settings).
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You might also need to remake src/backend/bootstrap/bootparse.c.
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2. Build with gcc, which treats alloca as a compiled-in-line function.
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3. Install HPUX 10, which has alloca. You're gonna have to do that
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before Y2K anyway...
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1.5) OK, it seemed to build and install, but the regression test fails.
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There are several "expected failures" due to differences between HPUX
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and the regression test reference platform used by the PostgreSQL group.
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A look at the textual differences between the expected and actual
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outputs will usually reveal that the differences are minor. You should
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expect these differences:
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TEST(S) COMMENTS
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int2, int4: pg_atoi generates a differently worded error
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message for integer overflow.
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float8: In 6.4, float8 shows some differences due to
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different handling of overflow/underflow errors in
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exp() and pow(). This should be fixed in 6.4.1
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and later.
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float8, geometry: Lots of differences in the last digit or two
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because of different roundoff errors in floating
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arithmetic. Also, HPUX does not distinguish
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-0 from 0 during printout, but the reference
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platform does.
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horology: HPUX time library does not know about daylight
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savings time before 1970, so there are some
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places in horology where a time will be shown
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in PST instead of PDT.
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In addition, the int8 regression test will fail massively on HPUX 9,
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because int8 doesn't actually work on this platform (sprintf/sscanf
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don't cope with long long int). Either upgrade to HPUX 10, or don't
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use int8 data.
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Any other error is cause for suspicion. In particular, if you see
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failures in the datetime test on HPUX 9, you probably forgot to
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install the libm patch PHSS_4630 --- see item 1.1 above.
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