[GRASS-dev] Python GUI requirements

[Glynn Clements]

Paul Kelly wrote:

> >>> current trunk ./configure --help says that --with-python will enable
> >>> Python support (Python bindings?).
> >>
> >> Yes.
> >>
> >>> Still I don't see any switch to enable/disable wxpython. Shouldn't
> >>> there be one?
> >>
> >> It isn't needed. The Tcl/Tk and Python checks in gui/Makefile are both
> >> bogus; those directories should be processed regardless of whether or
> >> not Tcl/Tk or Python are installed on the build system.
> >
> > now gui/Makefile checks for wxPython instead of Python. wxPython stuff
> > is installed only if --with-wxpython is given.
> 
> I think Glynn's point was that the installation should simply  be 
> unconditional with no checks in gui/Makefile - the wxPython stuff is just 
> scripts and doesn't need Python to be installed on the compilation system 
> for the scripts to be processed in any way (unlike C compiling) - the 
> requirement for wxPython is only on the system that GRASS is run on so it 
> should be a runtime check rather than a comile-time check.

Exactly.

If you're cross-compiling e.g. building a Windows version on a Linux
system, you shouldn't need to have a Windows version of
Python/wxPython installed on the build system.

Configure checks identify the compilation environment, not the
run-time environment.

-- 
Glynn Clements <glynn at gclements.plus.com>