perlaix


DESCRIPTION
       This document describes various features of IBM's UNIX operating system
       AIX that will affect how Perl version 5 (hereafter just Perl) is
       compiled and/or runs.

   Compiling Perl 5 on AIX
       For information on compilers on older versions of AIX, see "Compiling
       Perl 5 on older AIX versions up to 4.3.3".

       When compiling Perl, you must use an ANSI C compiler. AIX does not ship
       an ANSI compliant C compiler with AIX by default, but binary builds of
       gcc for AIX are widely available. A version of gcc is also included in
       the AIX Toolbox which is shipped with AIX.

   Supported Compilers
       Currently all versions of IBM's "xlc", "xlc_r", "cc", "cc_r" or "vac"
       ANSI/C compiler will work for building Perl if that compiler works on
       your system.

       If you plan to link Perl to any module that requires thread-support,
       like DBD::Oracle, it is better to use the _r version of the compiler.
       This will not build a threaded Perl, but a thread-enabled Perl. See
       also "Threaded Perl" later on.

       As of writing (2010-09) only the IBM XL C for AIX or IBM XL C/C++ for
       AIX compiler is supported by IBM on AIX 5L/6.1/7.1.

       The following compiler versions are currently supported by IBM:

           IBM XL C and IBM XL C/C++ V8, V9, V10, V11

       The XL C for AIX is integrated in the XL C/C++ for AIX compiler and
       therefore also supported.

       If you choose XL C/C++ V9 you need APAR IZ35785 installed otherwise the
       integrated SDBM_File do not compile correctly due to an optimization
       bug. You can circumvent this problem by adding -qipa to the
       optimization flags (-Doptimize='-O -qipa').  The PTF for APAR IZ35785
       which solves this problem is available from IBM (April 2009 PTF for XL
       C/C++ Enterprise Edition for AIX, V9.0).

       If you choose XL C/C++ V11 you need the April 2010 PTF (or newer)
       installed otherwise you will not get a working Perl version.

       Perl can be compiled with either IBM's ANSI C compiler or with gcc.
       The former is recommended, as not only it can compile Perl with no
       difficulty, but also can take advantage of features listed later that
       require the use of IBM compiler-specific command-line flags.

       If you decide to use gcc, make sure your installation is recent and
       complete, and be sure to read the Perl INSTALL file for more gcc-
       specific details. Please report any hoops you had to jump through to
       the development team.
           -------+---------------------+-------------------------+------+-------
           5.12.2 |5.1 TL9 32 bit       | XL C/C++ V7             | OK   | OK
           5.12.2 |5.1 TL9 64 bit       | XL C/C++ V7             | OK   | OK
           5.12.2 |5.2 TL10 SP8 32 bit  | XL C/C++ V8             | OK   | OK
           5.12.2 |5.2 TL10 SP8 32 bit  | gcc 3.2.2               | OK   | OK
           5.12.2 |5.2 TL10 SP8 64 bit  | XL C/C++ V8             | OK   | OK
           5.12.2 |5.3 TL8 SP8 32 bit   | XL C/C++ V9 + IZ35785   | OK   | OK
           5.12.2 |5.3 TL8 SP8 32 bit   | gcc 4.2.4               | OK   | OK
           5.12.2 |5.3 TL8 SP8 64 bit   | XL C/C++ V9 + IZ35785   | OK   | OK
           5.12.2 |5.3 TL10 SP3 32 bit  | XL C/C++ V11 + Apr 2010 | OK   | OK
           5.12.2 |5.3 TL10 SP3 64 bit  | XL C/C++ V11 + Apr 2010 | OK   | OK
           5.12.2 |6.1 TL1 SP7 32 bit   | XL C/C++ V10            | OK   | OK
           5.12.2 |6.1 TL1 SP7 64 bit   | XL C/C++ V10            | OK   | OK
           5.13   |7.1 TL0 SP1 32 bit   | XL C/C++ V11 + Jul 2010 | OK   | OK
           5.13   |7.1 TL0 SP1 64 bit   | XL C/C++ V11 + Jul 2010 | OK   | OK

           w th   = with thread support
           w/o th = without thread support
           OK     = tested

       Successfully tested means that all "make test" runs finish with a
       result of 100% OK. All tests were conducted with -Duseshrplib set.

       All tests were conducted on the oldest supported AIX technology level
       with the latest support package applied. If the tested AIX version is
       out of support (AIX 4.3.3, 5.1, 5.2) then the last available support
       level was used.

   Building Dynamic Extensions on AIX
       Starting from Perl 5.7.2 (and consequently 5.8.x / 5.10.x / 5.12.x) and
       AIX 4.3 or newer Perl uses the AIX native dynamic loading interface in
       the so called runtime linking mode instead of the emulated interface
       that was used in Perl releases 5.6.1 and earlier or, for AIX releases
       4.2 and earlier. This change does break backward compatibility with
       compiled modules from earlier Perl releases. The change was made to
       make Perl more compliant with other applications like Apache/mod_perl
       which are using the AIX native interface. This change also enables the
       use of C++ code with static constructors and destructors in Perl
       extensions, which was not possible using the emulated interface.

       It is highly recommended to use the new interface.

   Using Large Files with Perl
       Should yield no problems.

   Threaded Perl
       Should yield no problems with AIX 5.1 / 5.2 / 5.3 / 6.1 / 7.1.

       IBM uses the AIX system Perl (V5.6.0 on AIX 5.1 and V5.8.2 on AIX 5.2 /
       5.3 and 6.1; V5.8.8 on AIX 5.3 TL11 and AIX 6.1 TL4; V5.10.1 on AIX
       7.1) for some AIX system scripts. If you switch the links in /usr/bin
       from the AIX system Perl (/usr/opt/perl5) to the newly build Perl then
       you get the same features as with the IBM AIX system Perl if the
       threaded options are used.
       If you need more memory (larger data segment) for your Perl programs
       you can set:

           /etc/security/limits
           default:                    (or your user)
               data = -1               (default is 262144 * 512 byte)

       With the default setting the size is limited to 128MB.  The -1 removes
       this limit. If the "make test" fails please change your
       /etc/security/limits as stated above.

   Recommended Options AIX 5.1/5.2/5.3/6.1 and 7.1 (threaded/32-bit)
       With the following options you get a threaded Perl version which passes
       all make tests in threaded 32-bit mode, which is the default
       configuration for the Perl builds that AIX ships with.

           rm config.sh
           ./Configure \
           -d \
           -Dcc=cc_r \
           -Duseshrplib \
           -Dusethreads \
           -Dprefix=/usr/opt/perl5_32

       The -Dprefix option will install Perl in a directory parallel to the
       IBM AIX system Perl installation.

   Recommended Options AIX 5.1/5.2/5.3/6.1 and 7.1 (32-bit)
       With the following options you get a Perl version which passes all make
       tests in 32-bit mode.

           rm config.sh
           ./Configure \
           -d \
           -Dcc=cc_r \
           -Duseshrplib \
           -Dprefix=/usr/opt/perl5_32

       The -Dprefix option will install Perl in a directory parallel to the
       IBM AIX system Perl installation.

   Recommended Options AIX 5.1/5.2/5.3/6.1 and 7.1 (threaded/64-bit)
       With the following options you get a threaded Perl version which passes
       all make tests in 64-bit mode.

           export OBJECT_MODE=64 / setenv OBJECT_MODE 64 (depending on your shell)

           rm config.sh
           ./Configure \
           -d \
           -Dcc=cc_r \
           -Duseshrplib \
           -Dusethreads \
           -Duse64bitall \
           -Duseshrplib \
           -Duse64bitall \
           -Dprefix=/usr/opt/perl5_64

       The -Dprefix option will install Perl in a directory parallel to the
       IBM AIX system Perl installation.

       If you choose gcc to compile 64-bit Perl then you need to add the
       following option:

           -Dcc='gcc -maix64'

   Compiling Perl 5 on older AIX versions up to 4.3.3
       Due to the fact that AIX 4.3.3 reached end-of-service in December 31,
       2003 this information is provided as is. The Perl versions prior to
       Perl 5.8.9 could be compiled on AIX up to 4.3.3 with the following
       settings (your mileage may vary):

       When compiling Perl, you must use an ANSI C compiler. AIX does not ship
       an ANSI compliant C-compiler with AIX by default, but binary builds of
       gcc for AIX are widely available.

       At the moment of writing, AIX supports two different native C
       compilers, for which you have to pay: xlC and vac. If you decide to use
       either of these two (which is quite a lot easier than using gcc), be
       sure to upgrade to the latest available patch level. Currently:

           xlC.C     3.1.4.10 or 3.6.6.0 or 4.0.2.2 or 5.0.2.9 or 6.0.0.3
           vac.C     4.4.0.3  or 5.0.2.6 or 6.0.0.1

       note that xlC has the OS version in the name as of version 4.0.2.0, so
       you will find xlC.C for AIX-5.0 as package

           xlC.aix50.rte   5.0.2.0 or 6.0.0.3

       subversions are not the same "latest" on all OS versions. For example,
       the latest xlC-5 on aix41 is 5.0.2.9, while on aix43, it is 5.0.2.7.

       Perl can be compiled with either IBM's ANSI C compiler or with gcc.
       The former is recommended, as not only can it compile Perl with no
       difficulty, but also can take advantage of features listed later that
       require the use of IBM compiler-specific command-line flags.

       The IBM's compiler patch levels 5.0.0.0 and 5.0.1.0 have compiler
       optimization bugs that affect compiling perl.c and regcomp.c,
       respectively.  If Perl's configuration detects those compiler patch
       levels, optimization is turned off for the said source code files.
       Upgrading to at least 5.0.2.0 is recommended.

       If you decide to use gcc, make sure your installation is recent and
       complete, and be sure to read the Perl INSTALL file for more gcc-
       specific details. Please report any hoops you had to jump through to
       the development team.


       The same might happen to AIX 5.1 or other OS levels. As a side note,
       Perl cannot be built without bos.adt.syscalls and bos.adt.libm
       installed

           # lslpp -l | egrep "syscalls|libm"
           bos.adt.libm      5.1.0.25  COMMITTED  Base Application Development
           bos.adt.syscalls  5.1.0.36  COMMITTED  System Calls Application
           #

   Building Dynamic Extensions on AIX < 5L
       AIX supports dynamically loadable objects as well as shared libraries.
       Shared libraries by convention end with the suffix .a, which is a bit
       misleading, as an archive can contain static as well as dynamic
       members.  For Perl dynamically loaded objects we use the .so suffix
       also used on many other platforms.

       Note that starting from Perl 5.7.2 (and consequently 5.8.0) and AIX 4.3
       or newer Perl uses the AIX native dynamic loading interface in the so
       called runtime linking mode instead of the emulated interface that was
       used in Perl releases 5.6.1 and earlier or, for AIX releases 4.2 and
       earlier.  This change does break backward compatibility with compiled
       modules from earlier Perl releases.  The change was made to make Perl
       more compliant with other applications like Apache/mod_perl which are
       using the AIX native interface. This change also enables the use of C++
       code with static constructors and destructors in Perl extensions, which
       was not possible using the emulated interface.

   The IBM ANSI C Compiler
       All defaults for Configure can be used.

       If you've chosen to use vac 4, be sure to run 4.4.0.3. Older versions
       will turn up nasty later on. For vac 5 be sure to run at least 5.0.1.0,
       but vac 5.0.2.6 or up is highly recommended. Note that since IBM has
       removed vac 5.0.2.1 through 5.0.2.5 from the software depot, these
       versions should be considered obsolete.

       Here's a brief lead of how to upgrade the compiler to the latest level.
       Of course this is subject to changes.  You can only upgrade versions
       from ftp-available updates if the first three digit groups are the same
       (in where you can skip intermediate unlike the patches in the developer
       snapshots of Perl), or to one version up where the "base" is available.
       In other words, the AIX compiler patches are cumulative.

        vac.C.4.4.0.1 => vac.C.4.4.0.3  is OK     (vac.C.4.4.0.2 not needed)
        xlC.C.3.1.3.3 => xlC.C.3.1.4.10 is NOT OK (xlC.C.3.1.4.0 is not available)

        # ftp ftp.software.ibm.com
        Connected to service.boulder.ibm.com.
        : welcome message ...
        Name (ftp.software.ibm.com:merijn): anonymous
        331 Guest login ok, send your complete e-mail address as password.
        Password:
        ... accepted login stuff
        ... goodbye messages
        # ls -l *.ll
        -rw-rw-rw-   1 merijn   system    1169432 Nov  2 17:29 other.ll
        -rw-rw-rw-   1 merijn   system      29170 Nov  2 17:29 xlc.ll

       On AIX 4.2 using xlC, we continue:

        # lslpp -l | fgrep 'xlC.C '
          xlC.C                     3.1.4.9  COMMITTED  C for AIX Compiler
          xlC.C                     3.1.4.0  COMMITTED  C for AIX Compiler
        # grep 'xlC.C.3.1.4.*.bff' xlc.ll
        -rw-r--r--   1 45776101 1        6286336 Jul 22 1996  xlC.C.3.1.4.1.bff
        -rw-rw-r--   1 45776101 1        6173696 Aug 24 1998  xlC.C.3.1.4.10.bff
        -rw-r--r--   1 45776101 1        6319104 Aug 14 1996  xlC.C.3.1.4.2.bff
        -rw-r--r--   1 45776101 1        6316032 Oct 21 1996  xlC.C.3.1.4.3.bff
        -rw-r--r--   1 45776101 1        6315008 Dec 20 1996  xlC.C.3.1.4.4.bff
        -rw-rw-r--   1 45776101 1        6178816 Mar 28 1997  xlC.C.3.1.4.5.bff
        -rw-rw-r--   1 45776101 1        6188032 May 22 1997  xlC.C.3.1.4.6.bff
        -rw-rw-r--   1 45776101 1        6191104 Sep  5 1997  xlC.C.3.1.4.7.bff
        -rw-rw-r--   1 45776101 1        6185984 Jan 13 1998  xlC.C.3.1.4.8.bff
        -rw-rw-r--   1 45776101 1        6169600 May 27 1998  xlC.C.3.1.4.9.bff
        # wget ftp://ftp.software.ibm.com/aix/fixes/v4/xlc/xlC.C.3.1.4.10.bff
        #

       On AIX 4.3 using vac, we continue:

        # lslpp -l | grep 'vac.C '
         vac.C                      5.0.2.2  COMMITTED  C for AIX Compiler
         vac.C                      5.0.2.0  COMMITTED  C for AIX Compiler
        # grep 'vac.C.5.0.2.*.bff' other.ll
        -rw-rw-r--   1 45776101 1        13592576 Apr 16 2001  vac.C.5.0.2.0.bff
        -rw-rw-r--   1 45776101 1        14133248 Apr  9 2002  vac.C.5.0.2.3.bff
        -rw-rw-r--   1 45776101 1        14173184 May 20 2002  vac.C.5.0.2.4.bff
        -rw-rw-r--   1 45776101 1        14192640 Nov 22 2002  vac.C.5.0.2.6.bff
        # wget ftp://ftp.software.ibm.com/aix/fixes/v4/other/vac.C.5.0.2.6.bff
        #

       Likewise on all other OS levels. Then execute the following command,
       and fill in its choices

        # smit install_update
         -> Install and Update from LATEST Available Software
         * INPUT device / directory for software [ vac.C.5.0.2.6.bff    ]
         [ OK ]
         [ OK ]

       Follow the messages ... and you're done.

       If you like a more web-like approach, a good start point can be
       http://www14.software.ibm.com/webapp/download/downloadaz.jsp and click
       "C for AIX", and follow the instructions.

   The usenm option
       If linking miniperl
        ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.

       you could retry with

        make realclean
        rm config.sh
        ./Configure -Dusenm ...

       which makes Configure to use the "nm" tool when scanning for library
       symbols, which usually is not done in AIX.

       Related to this, you probably should not use the "-r" option of
       Configure in AIX, because that affects of how the "nm" tool is used.

   Using GNU's gcc for building Perl
       Using gcc-3.x (tested with 3.0.4, 3.1, and 3.2) now works out of the
       box, as do recent gcc-2.9 builds available directly from IBM as part of
       their Linux compatibility packages, available here:

         http://www.ibm.com/servers/aix/products/aixos/linux/

   Using Large Files with Perl < 5L
       Should yield no problems.

   Threaded Perl < 5L
       Threads seem to work OK, though at the moment not all tests pass when
       threads are used in combination with 64-bit configurations.

       You may get a warning when doing a threaded build:

         "pp_sys.c", line 4640.39: 1506-280 (W) Function argument assignment
         between types "unsigned char*" and "const void*" is not allowed.

       The exact line number may vary, but if the warning (W) comes from a
       line line this

         hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);

       in the "pp_ghostent" function, you may ignore it safely.  The warning
       is caused by the reentrant variant of gethostbyaddr() having a slightly
       different prototype than its non-reentrant variant, but the difference
       is not really significant here.

   64-bit Perl < 5L
       If your AIX is installed with 64-bit support, you can expect 64-bit
       configurations to work. In combination with threads some tests might
       still fail.

   AIX 4.2 and extensions using C++ with statics
       In AIX 4.2 Perl extensions that use C++ functions that use statics may
       have problems in that the statics are not getting initialized.  In
       newer AIX releases this has been solved by linking Perl with the libC_r
       library, but unfortunately in AIX 4.2 the said library has an obscure
       bug where the various functions related to time (such as time() and
Man Pages Copyright Respective Owners. Site Copyright (C) 1994 - 2017 Hurricane Electric. All Rights Reserved.