Re: [Gramps-devel] Building python and cairo

[Benny M. <ben...@gm...>]

2009/6/18 Benny Malengier <ben...@gm...>:
> 2009/6/18 Emrys Williams <emr...@ev...>:
>> I am (foolishly, some might say) trying to build a native binary version
>> of gramps for Mac, using this system:
>> https://sourceforge.net/apps/trac/gtk-osx/wiki/Build
>> and haven't reached as far as gramps yet. I am still making gtk (et al)
>> build. It was Benny's idea.
>>
>> The idea is to build a system entirely in user space - no root access -
>> which I can make into an executable with the bundling utility from the
>> same project. Mac users could then install that into their own user
>> space with one click. (No laughing at the back, please.)
>>
>> I know next to nothing about modern application building, but have made
>> some halting progress. My experiences are described at the thread
>> https://sourceforge.net/apps/phpbb/gtk-osx/viewtopic.php?f=3&t=5
>> My first question is about pycairo and pygobject installation. The
>> aclocal.m4 scripts used in the build process for them contains code that
>> uses not a specified directory for scripts for this code, but looks at
>> the system default directory for the existing installation of python,
>> rather than the one I'm building in user space. It does this:
>>
>> am_cv_python_pythondir=`$PYTHON -c "from distutils import sysconfig;
>> print sysconfig.get_python_lib(0,0,prefix='$PYTHON_PREFIX')"
>
> This is declaring a variable,
>
>  am_cv_python_pythondir
>
> using a bit of python code. You could set it to something hard coded locally.
> To know what the code returns, enter it in a terminal. I would guess
> $PYTHON and $PYTHON_PREFIX are defined somewhere higher in the script,
> normally on linux they would be
> $PYTHON = python
> and
> $PYTHON_PREFIX = /usr
>
> The last you can find in Mac from a python terminal:
> k$ python
> Python 2.5.2 (r252:60911, Jul 31 2008, 17:28:52)
> [GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu7)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
>>>> import sys
>>>> sys.prefix
> '/usr'
>>>>
>
> Now we can do that line you give to see what it gives on linux:
>>>> from distutils import sysconfig
>>>> print sysconfig.get_python_lib(0,0,prefix='/usr')
> /usr/lib/python2.5/site-packages
>
> So the above is for python2.5 the value for your
> am_cv_python_pythondir variable in linux. It will be different in
> python2.6 as that directory is deprecated.

I did not really say why did I :-)

The script must need the correct dir as set by python so as to install
packages in the correct place I suspect. Eg, on my box, cairo is
installed in /usr/lib/python2.5/site-packages/cairo

What the dir specifically means is here:
http://docs.python.org/distutils/apiref.html#module-distutils.sysconfig
method get_python_lib. Note that in the code you show, the first two
parameters are 0, so False.

 Benny
>