Re: 5.8.9 RC1 patches for AIX

Message-ID: <4922ADE3.5030701@tammer.net>

p4raw-id: //depot/perl@34881

1 files changed, 158 insertions, 2 deletions

diff --git a/README.aix b/README.aix
index dacba50a79..73905031a5 100644
--- a/README.aix
+++ b/README.aix
@@ -14,6 +14,161 @@ is compiled and/or runs.
 
 =head2 Compiling Perl 5 on AIX
 
+For information on compilers on older versions of AIX, see L<Compiling
+Perl 5 on older AIX>.
+
+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.
+
+=head2 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.
+
+As of writing (2008-11) only the IBM XL C for AIX or XL C/C++ for AIX
+compiler is supported by IBM on AIX 5L/6.1.
+
+The following compiler versions are supported by IBM:
+
+XL C and XL C/C++ V7, V8, V9, V10
+
+The XL C for AIX is integrated in the XL C/C++ for AIX compiler.
+
+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 will be available
+in 1Q 2009. IBM does provide an emergency fix for this problem.
+
+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.
+
+=head2 Building Dynamic Extensions on AIX
+
+Starting from Perl 5.7.2 (and consequently 5.8.x / 5.10.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.
+
+=head2 Using Large Files with Perl
+
+Should yield no problems.
+
+=head2 Threaded Perl
+
+Should yield no problems with AIX 5.2 / 5.3 and 6.1.
+
+IBM uses the AIX system Perl (V5.8.2 as of writing) for some AIX
+system scripts. If you switches 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.
+
+=head2 64-bit Perl
+
+If your AIX system is installed with 64-bit support, you can expect 64-bit
+configurations to work. If you want to use 64-bit Perl on AIX 6.1
+you need a APAR for a libc.a bug which affects (n)dbm_XXX functions.
+The APAR number for this problem is currently not yet available. If
+the fileset bos.rte.libc is at level 6.1.1.2 or lower then the problem
+is no fixed on your system.
+
+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.
+
+=head2 Recommended Options AIX 5.2/5.3 and 6.1 (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.
+
+=head2 Recommended Options AIX 5.1/5.2/5.3 and 6.1 (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.
+
+=head2 Recommended Options AIX 5.2/5.3 and 6.1 (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 \
+    -Dprefix=/usr/opt/perl5_64
+
+=head2 Recommended Options AIX 5.1/5.2/5.3 and 6.1(64-bit)
+
+With the following options you get a 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 \
+    -Duse64bitall \
+    -Dprefix=/usr/opt/perl5_64
+
+The -Dprefix option will install Perl in a directory parallel to the
+IBM AIX system Perl installation.
+
+=head2 Compiling Perl 5 on older AIX
+
 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.
@@ -259,12 +414,13 @@ has an obscure bug where the various functions related to time
 (such as time() and gettimeofday()) return broken values, and
 therefore in AIX 4.2 Perl is not linked against the libC_r.
 
-=head1 AUTHOR
+=head1 AUTHORS
 
 H.Merijn Brand <h.m.brand@xs4all.nl>
+Rainer Tammer <tammer@tammer.net>
 
 =head1 DATE
 
-Version 0.0.6: 23 Dec 2002
+Version 0.0.7: 18 Nov 2008
 
 =cut