pip installation of cairocffi not working on mac

[nitinbodke]

I tried to install cairocffi on Mac.
I am getting error while importing cairocffi.

Below are environment details:
Model: MacBook Pro
OS X: 10.8.5
Python: 2.7.2

Command Log:

sudo pip install cairocffi

...some warnings ....

    35 warnings generated.
    clang -bundle -undefined dynamic_lookup -Wl,-F. -arch i386 -arch x86_64 build/temp.macosx-10.8-intel-2.7/c/_cffi_backend.o -L/opt/local/lib -lffi -o build/lib.macosx-10.8-intel-2.7/_cffi_backend.so
    ld: warning: ignoring file /opt/local/lib/libffi.dylib, file was built for x86_64 which is not the architecture being linked (i386): /opt/local/lib/libffi.dylib

  Running setup.py install for pycparser

Successfully installed cairocffi cffi pycparser
Cleaning up...
SymMacToolkit-C02K824VF1G3:specs nitin_bodke$ python
Python 2.7.2 (default, Oct 11 2012, 20:14:37) 
[GCC 4.2.1 Compatible Apple Clang 4.0 (tags/Apple/clang-418.0.60)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import cairocffi
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Python/2.7/site-packages/cairocffi/__init__.py", line 39, in <module>
    cairo = dlopen(ffi, 'libcairo.so.2', 'libcairo-2.dll', 'cairo', 'libcairo-2')
  File "/Library/Python/2.7/site-packages/cairocffi/__init__.py", line 34, in dlopen
    return ffi.dlopen(names[0])  # pragma: no cover
  File "/Library/Python/2.7/site-packages/cffi/api.py", line 117, in dlopen
    lib, function_cache = _make_ffi_library(self, name, flags)
  File "/Library/Python/2.7/site-packages/cffi/api.py", line 399, in _make_ffi_library
    backendlib = backend.load_library(name, flags)
OSError: cannot load library libcairo.so.2: dlopen(libcairo.so.2, 2): image not found
>>> 
</snip>

[SimonSapin]

Hi. Your probably need to install cairo separately. You can get it with Homebrew or Macports. After that, you may need to enable something so that the library can be loaded dynamically. Unfortunately I don’t have access to OS X myself to test this.

[nitinbodke]

Hi,

I have installed cairo from macports.
This comes with libcairo.2.dylib and not libcairo.so.2.
Here is the extract of the "port contents cairo"

/opt/local/lib/libcairo.2.dylib
/opt/local/lib/libcairo.a
/opt/local/lib/libcairo.dylib
/opt/local/lib/libcairo.la

Regards,
Nitin.

[SimonSapin]

As you can see with dlopen(ffi, 'libcairo.so.2', 'libcairo-2.dll', 'cairo', 'libcairo-2') in the traceback, cairocffi tries a bunch of different names. Normally, just giving cairo to dlopen should do the trick on OS X.

Does it help to add /opt/local/lib to the LD_LIBRARY_PATH or DYLD_LIBRARY_PATH environment variable?

[nitinbodke]

Hi,

I have added 'libcairo.2.dylib' to dlopen call and that fixed the issue.

cairo = dlopen(ffi, 'libcairo.so.2', 'libcairo-2.dll', 'cairo', 'libcairo-2', 'libcairo.2.dylib')

python Python 2.7.2 (default, Oct 11 2012, 20:14:37) [GCC 4.2.1 Compatible Apple Clang 4.0 (tags/Apple/clang-418.0.60)] on darwin Type "help", "copyright", "credits" or "license" for more information.

import cairocffi as cairo
quit()

Thanks for help.

Regards,
Nitin.

[SimonSapin]

Could you try these and tell me which of them work?

import cffi; cffi.FFI().dlopen('cairo')

import cffi; cffi.FFI().dlopen('cairo.2')

import cffi; cffi.FFI().dlopen('libcairo')

import cffi; cffi.FFI().dlopen('libcairo.2')

import cffi; cffi.FFI().dlopen('libcairo.2.dylib')

import cffi; cffi.FFI().dlopen('cairo.2.dylib')

import cffi; cffi.FFI().dlopen('cairo.dylib')

import cffi; cffi.FFI().dlopen('libcairo.dylib')

[nitinbodke]

libcairo.2.dylib and libcairo.dylib worked for me.
Below is the detailed errors:

(graphite)$ python
Python 2.7.2 (default, Oct 11 2012, 20:14:37) 
[GCC 4.2.1 Compatible Apple Clang 4.0 (tags/Apple/clang-418.0.60)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import cffi; cffi.FFI().dlopen('cairo')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/graphite/lib/python2.7/site-packages/cffi/api.py", line 117, in dlopen
    lib, function_cache = _make_ffi_library(self, name, flags)
  File "/opt/graphite/lib/python2.7/site-packages/cffi/api.py", line 398, in _make_ffi_library
    raise OSError("library not found: %r" % (name,))
OSError: library not found: 'cairo'
>>> import cffi; cffi.FFI().dlopen('cairo.2')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/graphite/lib/python2.7/site-packages/cffi/api.py", line 117, in dlopen
    lib, function_cache = _make_ffi_library(self, name, flags)
  File "/opt/graphite/lib/python2.7/site-packages/cffi/api.py", line 399, in _make_ffi_library
    backendlib = backend.load_library(name, flags)
OSError: cannot load library cairo.2: dlopen(cairo.2, 2): image not found
>>> import cffi; cffi.FFI().dlopen('libcairo')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/graphite/lib/python2.7/site-packages/cffi/api.py", line 117, in dlopen
    lib, function_cache = _make_ffi_library(self, name, flags)
  File "/opt/graphite/lib/python2.7/site-packages/cffi/api.py", line 398, in _make_ffi_library
    raise OSError("library not found: %r" % (name,))
OSError: library not found: 'libcairo'
>>> import cffi; cffi.FFI().dlopen('libcairo.2')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/graphite/lib/python2.7/site-packages/cffi/api.py", line 117, in dlopen
    lib, function_cache = _make_ffi_library(self, name, flags)
  File "/opt/graphite/lib/python2.7/site-packages/cffi/api.py", line 399, in _make_ffi_library
    backendlib = backend.load_library(name, flags)
OSError: cannot load library libcairo.2: dlopen(libcairo.2, 2): image not found
>>> import cffi; cffi.FFI().dlopen('libcairo.2.dylib')
<cffi.api.FFILibrary_libcairo.2.dylib object at 0x104848dd0>
>>> import cffi; cffi.FFI().dlopen('cairo.2.dylib')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/graphite/lib/python2.7/site-packages/cffi/api.py", line 117, in dlopen
    lib, function_cache = _make_ffi_library(self, name, flags)
  File "/opt/graphite/lib/python2.7/site-packages/cffi/api.py", line 399, in _make_ffi_library
    backendlib = backend.load_library(name, flags)
OSError: cannot load library cairo.2.dylib: dlopen(cairo.2.dylib, 2): image not found
>>> import cffi; cffi.FFI().dlopen('cairo.dylib')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/graphite/lib/python2.7/site-packages/cffi/api.py", line 117, in dlopen
    lib, function_cache = _make_ffi_library(self, name, flags)
  File "/opt/graphite/lib/python2.7/site-packages/cffi/api.py", line 399, in _make_ffi_library
    backendlib = backend.load_library(name, flags)
OSError: cannot load library cairo.dylib: dlopen(cairo.dylib, 2): image not found
>>> import cffi; cffi.FFI().dlopen('libcairo.dylib')
<cffi.api.FFILibrary_libcairo.dylib object at 0x10485b450>
>>> 

[SimonSapin]

By the way, this

```
code
```

works nicer on GitHub than <snip> and </snip>

[SimonSapin]

Ok, I just pushed 01681e6. Let me know if it’s still broken or if you need this on PyPI.

[nitinbodke]

Sorry, this is the first time I am using GitHub commenting.

To give the bigger picture, I am trying to install Graphite, I stuck upon cairo installation. I came across "http://stackoverflow.com/questions/11491268/install-pycairo-in-virtualenv"
and used your solution.

I am hitting following traceback.
At this point, I don't know whether this is issue with cairocffi.
If this is off topic, please accept my apologies.

"Traceback (most recent call last):
  File "/opt/graphite/lib/python2.7/site-packages/django/core/handlers/base.py", line 103, in get_response
    resolver_match = resolver.resolve(request.path_info)
  File "/opt/graphite/lib/python2.7/site-packages/django/core/urlresolvers.py", line 321, in resolve
    sub_match = pattern.resolve(new_path)
  File "/opt/graphite/lib/python2.7/site-packages/django/core/urlresolvers.py", line 321, in resolve
    sub_match = pattern.resolve(new_path)
  File "/opt/graphite/lib/python2.7/site-packages/django/core/urlresolvers.py", line 223, in resolve
    return ResolverMatch(self.callback, args, kwargs, self.name)
  File "/opt/graphite/lib/python2.7/site-packages/django/core/urlresolvers.py", line 230, in callback
    self._callback = get_callable(self._callback_str)
  File "/opt/graphite/lib/python2.7/site-packages/django/utils/functional.py", line 31, in wrapper
    result = func(*args)
  File "/opt/graphite/lib/python2.7/site-packages/django/core/urlresolvers.py", line 97, in get_callable
    mod = import_module(mod_name)
  File "/opt/graphite/lib/python2.7/site-packages/django/utils/importlib.py", line 35, in import_module
    __import__(name)
  File "/opt/graphite/webapp/graphite/render/views.py", line 36, in <module>
    from graphite.render.evaluator import evaluateTarget
  File "/opt/graphite/webapp/graphite/render/evaluator.py", line 47, in <module>
    from graphite.render.functions import SeriesFunctions
  File "/opt/graphite/webapp/graphite/render/functions.py", line 33, in <module>
    from graphite.render.glyph import format_units
  File "/opt/graphite/webapp/graphite/render/glyph.py", line 15, in <module>
    import cairocffi as cairo
  File "/opt/graphite/lib/python2.7/site-packages/cairocffi/__init__.py", line 16, in <module>
    from . import constants
ImportError: cannot import name constants"

[nitinbodke]

I think there are couple of places we need to modify to fix this.
Below are the error when I am not using virtual env.

">>> import cairocffi as cairo
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Python/2.7/site-packages/cairocffi/__init__.py", line 39, in <module>
    cairo = dlopen(ffi, 'libcairo.so.2', 'libcairo-2.dll', 'cairo', 'libcairo-2')
  File "/Library/Python/2.7/site-packages/cairocffi/__init__.py", line 34, in dlopen
    return ffi.dlopen(names[0])  # pragma: no cover
  File "/Library/Python/2.7/site-packages/cffi/api.py", line 117, in dlopen
    lib, function_cache = _make_ffi_library(self, name, flags)
  File "/Library/Python/2.7/site-packages/cffi/api.py", line 399, in _make_ffi_library
    backendlib = backend.load_library(name, flags)
OSError: cannot load library libcairo.so.2: dlopen(libcairo.so.2, 2): image not found
>>> 

[SimonSapin]

Please open another issue with this traceback and some context such as steps to reproduce it.

[nitinbodke]

Sure, I will open separate issue.

[SimonSapin]

Closing this as it seems solved. Let me know if you need it on PyPI.

[colevscode]

Is this fix reflected on PyPI? I received this error recently. Currently have v 0.5.2 installed according to pip freeze.