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This file describes some things to be aware of when building SIP (and PyTQt)
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under AIX.
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I had success building SIP V3/V4 (and PyTQt) on AIX 4.3.3 and on AIX 5.1 with
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VisualAge C++ and with gcc.
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VisualAge C++ was version 6.0 but it should also work with version 5.x.
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The GNU compiler was version 3.3.2 downloaded as a binary from
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http://aixpdslib.seas.ucla.edu/aixpdslib.html
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The TQt-Version was 3.2.3 but it should also work with previous versions.
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If you are using Python version 2.3.3 or higher, SIP (and PyTQt) should build
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out of the box without any changes.
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If you are using a Python version before 2.3.3, you have to patch Python,
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because until this version, Python uses the system calls load() and
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loadbind() to load and bind shared objects. These system calls cannot load
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and bind C++ shared objects properly (constructors and destructors for static
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classes are not called with these system calls). Since AIX version 4.2 the
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system calls dlopen() and dlsym() are available and should be used in
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preference.
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The following patch changes the configure script of Python to use dlopen()
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and dlsym() if they are available. It also fixes a bug with the definition of
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_XOPEN_SOURCE:
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---8<-------------------------------------------------------------------->8---
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diff -uNr Python-2.3.2.orig/configure Python-2.3.2/configure
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--- Python-2.3.2.orig/configure 2003-09-27 10:58:55.000000000 +0200
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+++ Python-2.3.2/configure 2003-10-28 11:33:58.000000000 +0100
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@@ -1452,6 +1452,11 @@
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# but used in struct sockaddr.sa_family. Reported by Tim Rice.
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SCO_SV/3.2)
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define_xopen_source=no;;
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+ # On AIX 4, mbstate_t is defined only when _XOPEN_SOURCE == 500 but used in
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+ # wcsnrtombs() and mbsnrtowcs() even if _XOPEN_SOURCE is not defined or
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+ # has another value. By not (re)defining it, the defaults come in place.
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+ AIX/4)
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+ define_xopen_source=no;;
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esac
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if test $define_xopen_source = yes
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@@ -12965,7 +12970,12 @@
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if test -z "$DYNLOADFILE"
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then
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case $ac_sys_system/$ac_sys_release in
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- AIX*) DYNLOADFILE="dynload_aix.o";;
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+ AIX*) # Use dynload_shlib.c and dlopen() if we have it.
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+ if test "$ac_cv_func_dlopen" = yes
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+ then DYNLOADFILE="dynload_shlib.o"
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+ else DYNLOADFILE="dynload_aix.o"
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+ fi
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+ ;;
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BeOS*) DYNLOADFILE="dynload_beos.o";;
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hp*|HP*) DYNLOADFILE="dynload_hpux.o";;
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Darwin/*) DYNLOADFILE="dynload_next.o";;
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---8<-------------------------------------------------------------------->8---
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Note: I did not mix the compilers when building TQt, Python, SIP and PyTQt. At
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least TQt, SIP and PyTQt must be built with the same compiler because of
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different name mangling schemes.
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If you have any problems or questions on building SIP or PyTQt on AIX, either
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send an email to ulrich.berning@desys.de or use the PyKDE mailing list.
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Ulrich Berning
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DESYS GmbH
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