Re: [Boost-build] Boost Python with BBv2 on AIX

From: David Abrahams (dave_at_[hidden])
Date: 2007-05-10 09:12:23

on Wed May 09 2007, Christopher Cambly <ccambly-AT-ca.ibm.com> wrote:

> In boost 1.33.1, in the file tools/build/v1/python.jam, there was a
> section specific to AIX that provided a link option specifying an
> import list.
>
>     else if $(OS) = AIX
>     {
>         PYTHON_PROPERTIES
>           += <*><*><linkflags>"-Wl,-bI:$(PYTHON_LIB_PATH)/python.exp"
>             <*><*><find-library>pthreads ;
>     }
>
> There is no equivalent in the python.jam from Boost Build V2.  

Yep.  Someone (you?) contacted me a while back claiming that if I
would just pass the right flag to the linker, I could get AIX to
behave like any other Unix platform and I wouldn't need these special
shenanigans.  He promised me a patch, but, well, I never got it.

Unfortunately, these messages seem to have disappeared from my
electronic record :(

> I have been experimenting with different combinations to produce a similar behavior from BBv2.  
>  This is what I came up with, and appears to work.  
>
>         # On AIX we need Boost.Python and Python extensions to import symbols from the python
> interpreter
>         # since libraries opened with dlopen() do not inherit symbols from the Python
> interpreter itself
>        if $(target-os) = aix
>         {
>            alias python_for_extensions
>                         :
>                         : $(target-requirements)
>                         :
>                         : $(usage-requirements) <linkflags>-bI:$(libraries[1])/python.exp
>                         ;
>         }
>
> I initially tried "$(usage-requirements) <linkflags>-Wl,-bI:$(libraries)/python.exp"  but that
> gave me
> " -bI:/usr/lib/python.exp -bI:/usr/lib/python2.4/config/python.exp "

Yeah, nasty.  Volodya, is there a way to embed a comma in a feature
value?

> However, $(usage-requirements)
> <linkflags>-bI:$(libraries[1])/python.exp gave me what I wanted
> which is -bI:/usr/lib/python2.4/config/python.exp.
>
> Unfortunately, I am all that comfortable with the new build system
> and hoping for some suggestions

Submit your patch to the tracker at svn.boost.org?

-- 
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com
Don't Miss BoostCon 2007! ==> http://www.boostcon.com