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New version of Vladimir Marangozov's AIX hacks -- simpler etc.
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‎Misc/AIX-NOTES‎

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Subject: AIX-NOTES FOR 1.4
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From: Manus Hand <[email protected]>
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To: [email protected]
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cc: [email protected]
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Date: Fri, 25 Oct 1996 15:19:23 -0600 (MDT)
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Subject: AIX - Misc/AIX-NOTES
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From: Vladimir Marangozov <[email protected]>
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To: [email protected] (Guido van Rossum)
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Date: Wed, 6 Aug 1997 11:41:00 +0200 (EET)
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==============================================================================
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COMPILER INFORMATION
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AIX C compiler version 3.1.2 on AIX 4.1.3 and AIX 4.1.4
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AIX C compiler version 1.3.0 on AIX 3.2.5
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If you have this problem, please report the compiler/OS version.
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[Postscript: it has also been spotted on AIX 4.2.1 --Guido]
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(2) Stefan Esser ([email protected]), in work done to compile Python
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1.0.0 on AIX 3.2.4, reports that AIX compilers don't like the LANG
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THREAD SUPPORT
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------------------------------------------------------------------------------
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AIX uses pthreads. However, as of AIX version 4, there are two (incompatible)
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types of pthreads on AIX:
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As of AIX version 4, there are two (incompatible) types of pthreads on AIX:
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a) AIX DCE pthreads (on AIX 3.2.5)
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b) AIX 4 pthreads (on AIX 4.1 and up)
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Support has been added to Python to handle the distinction.
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Python modules may now be built as shared libraries on AIX using the normal
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process of uncommenting the "*shared*" line in Modules/Setup.in before the
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build. There is one additional step required, and that is to also uncomment
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the line in Modules/Setup.in which reads
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LINKCC= makexp_aix python.exp "" $(MYLIBS) $(ADDOBJS) ; $(CC)
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build.
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AIX shared libraries require that an "export" and "import" file be provided
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at compile time to list all extern symbols which may be shared between
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modules. The effect of uncommenting the LINKCC line in Modules/Setup.in is
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to create the "export" file for the modules and the libraries that belong to
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the Python core. This is done by the "makexp_aix" script, which creates a
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file named python.exp before performing the link of the python binary.
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modules. The "export" file (named python.exp) for the modules and the
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libraries that belong to the Python core is created by the "makexp_aix"
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script before performing the link of the python binary. It lists all global
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symbols (exported during the link) of the modules and the libraries that
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make up the python executable.
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When shared library modules (.so files) are made, a second shell script
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is invoked. This script is named "ld_so_aix" and is also provided with
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command that creates the shared module. Among other things, it specifies
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that the "python.exp" file is an "import" file for the shared module.
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A default python.exp file is provided with the distribution. It will be
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overwritten (by the action of the makexp_aix script) if you build with shared
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libraries. The python.exp file which comes with the distribution contains
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all extern symbols of a completely statically built python executable.
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Any python.exp file which is created from a build of python with some of the
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modules linked as shared modules will obviously not list symbols from the now
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dynamic modules. The distributed python.exp is provided so that, with
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assistance from the ld_so_aix and makexp_aix scripts, shared extension
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modules may be added to an otherwise completely static python build.
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At the time of this writing, neither the python.exp file nor the makexp_aix
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or ld_so_aix scripts are installed by the make procedure, so you should
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remember to keep these and/or copy them to a different location for

‎Modules/Makefile.pre.in‎

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# === Variables that are customizable by hand or by inclusion in Setup ===
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LINKCC= $(PURIFY) $(CC)
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LINKCC= $(PURIFY) @LINKCC@
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INCLDIR= $(srcdir)/../Include
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CONFIGINCLDIR= ..
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CFLAGS= $(OPT) -I$(INCLDIR) -I$(CONFIGINCLDIR) $(DEFS)

‎Modules/Setup.in‎

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# to ftp sources from elsewhere.
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# -------> Uncomment this line if you are running AIX <----------
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# -------> and if you are building with shared libraries <----------
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#LINKCC= makexp_aix python.exp "" $(MYLIBS) $(ADDOBJS) ; $(CC)
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# Some special rules to define PYTHONPATH.
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# Edit the definitions below to indicate which options you are using.
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# Don't add any whitespace or comments!

‎Modules/defmakexp_aix‎

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‎Modules/ld_so_aix‎

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# (*) -bE:[ExportFile] -bE:[OutputBaseName].exp
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# (*) -bI:[ImportFile] -bI:./python.exp
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# -bM:[ModuleType] -bM:SRE
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# -bhalt:[Number] -bhalt:4
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# -T[Number] -T512
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# -H[Number] -H512
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# -lm
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entry=init`echo $filename | sed "s/module.*//"`
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fi
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#echo "ld_so_aix: Debug info section
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#echo "ld_so_aix: Debug info section"
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#echo " -> output file : $objfile"
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#echo " -> import file : $impfile"
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#echo " -> export file : $expfile"
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#echo " -> entry point : $entry"
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#echo " -> object files: $objs"
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#echo " -> CC arguments: $args"
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CCOPT="-Wl,-e$entry -Wl,-bE:$expfile -Wl,-bI:$impfile"
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CCOPT="-Wl,-e$entry -Wl,-bE:$expfile -Wl,-bI:$impfile -Wl,-bhalt:4"
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CCOPT="$CCOPT -Wl,-bM:SRE -Wl,-T512 -Wl,-H512 -lm -o $objfile"
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CCARGS="$args"
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