[GRASS-dev] getting vdigit to compile correctly on the Mac

[William Kyngesburye]

On Sep 13, 2008, at 2:05 PM, William Kyngesburye wrote:

>> If not, it may be necessary to make the symlinks in /usr/local/lib
>>
>> Michael
>>
> Python is not broken, so we should try to avoid "fixing" it with  
> symlinks.  it's more a problem of a confused or broken linker.
>
> Either someone figures out distutils, or we work around it by  
> editing platform.make (until a better fix is found) or do something  
> in configure.


Here's a mostly proper way to do it - technically, binary python  
extensions on OSX don't need to link directly to python (as I've  
mentioned before).  Either you use the -bundle-loader link flag (the  
standard way, what distutils would do) or use -undefined  
dynamic_lookup (the alternative).

Since we already use -undefined dynamic_lookup to handle the libgdi  
problem, we don't need any of the python ldflags.  In the vdigit  
makefile, like this:

EXTRA_LIBS = $(VECTLIB) $(GISLIB) $(GDALLIBS) $(VEDITLIB) $ 
(WXWIDGETSLIB)
ifeq ($(findstring darwin,$(ARCH)),darwin)
EXTRA_LIBS := -bundle -undefined dynamic_lookup $(EXTRA_LIBS)
else
EXTRA_LIBS := $(EXTRA_LIBS) $(PYTHONLDFLAGS) -lgdi
endif

I moved the PYTHONLDFLAGS into the non-OSX extra-libs.  In the same  
manner, since wxnviz also has a binary python extension, we should do  
the same thing in the wxpython nviz makefile (just without the -lgdi  
bit):

EXTRA_LIBS = $(GISLIB) $(WXWIDGETSLIB) $(XLIBPATH) $(XMLIB) $(XTLIB) $ 
(XLIB) $(XEXTRALIBS) $(OGSFLIB) $(NVIZLIB)
ifeq ($(findstring darwin,$(ARCH)),darwin)
EXTRA_LIBS := -bundle -undefined dynamic_lookup $(EXTRA_LIBS)
else
EXTRA_LIBS := $(EXTRA_LIBS) $(PYTHONLDFLAGS)
endif


-----
William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
http://www.kyngchaos.com/

"I ache, therefore I am.  Or in my case - I am, therefore I ache."

- Marvin