Using pypotrace on osx?

[ff6347]

Hi there, I would love to use your lib on Mac OSX 10.8? Is it possible to do that?

[flupke]

I don't see why it would not be possible, though I can't help you as I don't own a Mac.

[ff6347]

hm. My problem is I can't find anything 'agg' related for Mac. Also nothing about 'potrace development packages'. (I installed potrace via macports)

[flupke]

IIRC headers are not separated from libs on macports, you get both when you install a package. "agg" stands for Antigraingeometry, it seems to be available on macports: https://trac.macports.org/browser/trunk/dports/graphics/antigraingeometry/Portfile

[ff6347]

Cool.

sudo port install antigraingeometry  

Did it. Thanks. But now I get an error while running your setup.py

potrace/_potrace.c:156:10: fatal error: 'potracelib.h' file not found
#include "potracelib.h"
         ^
1 error generated.
error: command 'clang' failed with exit status 1  

Seems like the potrace is missing.

[ff6347]

macports placed the header here

/opt/local/include/potracelib.h  

So it is there. How can I tell the setup to look also there? Sorry if these are stupid questions. I'm a python rookie

[flupke]

You can change the include dirs in setup.py with the include_dirs argument of Extension, e.g.:

ext_modules = [
        Extension("potrace._potrace", ["potrace/_potrace.pyx"], 
            libraries=["potrace"], include_dirs=['/opt/local/include']),
        Extension("potrace.bezier", ["potrace/bezier.pyx"],
            libraries=["agg"], language="c++"),
        Extension("potrace.agg.curves", ["potrace/agg/curves.pyx"],
            libraries=["agg"], language="c++"),
    ]

Could you make a pull request if you get this to work ?

[ff6347]

Shure I will make a pull request. But now I get an error with numpy. That should be in the Python Core , if I'm not mistaken.
The error:

potrace/_potrace.c:159:10: fatal error: 'numpy/arrayobject.h' file not found
#include "numpy/arrayobject.h"

It is located here:
/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/numpy/core/include/numpy/arrayobject.h

Tried to add the path to the include dirs but it didnot work

ext_modules = [
    Extension("potrace._potrace", ["potrace/_potrace.pyx"], 
        libraries=["potrace"], include_dirs=['/opt/local/include','/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/numpy/core/include/numpy']),
    Extension("potrace.bezier", ["potrace/bezier.pyx"],
        libraries=["agg"], language="c++"),
    Extension("potrace.agg.curves", ["potrace/agg/curves.pyx"],
        libraries=["agg"], language="c++"),
    ]

[ff6347]

I found this thread cannot find numpy header files https://bugs.archlinux.org/task/22326

Description: When trying to use cython (within python2) to create a module from a numpy scrip, the compilation fails because python/gcc cannot find the required header files that came with numpy.

This seems to be the fix (if I understand it right), but where could I put it to test that:

export CFLAGS=-I/usr/lib/python2.7/site-packages/numpy/core/include/

[ff6347]

hm. I managed to import the numpy headers like discribed in the cannot find numpy header files thread. (I get a lot of warnings about unused stuff from numpy but it works.)
setup.py looks liek this now:

from distutils.core import setup
from distutils.extension import Extension
from Cython.Distutils import build_ext
import numpy

ext_modules = [
        Extension("potrace._potrace", ["potrace/_potrace.pyx"], 
            libraries=["potrace"], include_dirs=['/opt/local/include',numpy.get_include()]),
        Extension("potrace.bezier", ["potrace/bezier.pyx"],
            libraries=["agg"], language="c++"),
        Extension("potrace.agg.curves", ["potrace/agg/curves.pyx"],
            libraries=["agg"], language="c++"),
    ]

Now the next error.

10 warnings generated.
clang -bundle -undefined dynamic_lookup -Wl,-F. -arch i386 -arch x86_64 build/temp.macosx-10.8-intel-2.7/potrace/_potrace.o -lpotrace -o build/lib.macosx-10.8-intel-2.7/potrace/_potrace.so
ld: library not found for -lpotrace
clang: error: linker command failed with exit code 1 (use -v to see invocation)
error: command 'clang' failed with exit status 1

So what does that mean? -lpotrace ? I found another thread where somebody has a similar problem.
He uses a lib that is called parser but it looks for something called lparer

http://forums.macrumors.com/showthread.php?t=703524

This doesn't look like a symbolic link issue, but rather a prompt formatting issue. Double-check your includes line. Somehow, ld thinks that you're trying to specify a library called lparser rather than parser.

[flupke]

-lpotrace means link with the potrace library (that comes from the libraries=["potrace"] option). You have to find where macports puts this file (it should be named "libpotrace.so"), then specify it with the library_dirs as you did with include_dirs, e.g.:

Extension(..., library_dirs=['/directory/that/contains/potrace'])

[ff6347]

hi there - its me again,

macports places the libs under /opt/local/lib so my include is like this:

library_dirs=['/opt/local/lib']  

Now he passes the error I had before, but there seems to be something wrong libpotrace.dylib: file was built for unsupported file format ( 0xcf 0xfa 0xed 0xfe 0x 7 0x 0 0x 0 0x 1 0x 3 0x 0 0x 0 0x 0 0x 6 0x 0 0x 0 0x 0 ) which is not the architecture being linked (i386).

clang -bundle -undefined dynamic_lookup -Wl,-F. -arch i386 -arch x86_64 build/temp.macosx-10.8-intel-2.7/potrace/_potrace.o -L/opt/local/lib -lpotrace -o build/lib.macosx-10.8-intel-2.7/potrace/_potrace.so  
ld: warning: ignoring file /opt/local/lib/libpotrace.dylib, file was built for unsupported file format ( 0xcf 0xfa 0xed 0xfe 0x 7 0x 0 0x 0 0x 1 0x 3 0x 0 0x 0 0x 0 0x 6 0x 0 0x 0 0x 0 ) which is not the architecture being linked (i386): /opt/local/lib/libpotrace.dylib  

And afterwards follows again an error with numpy.

skipping 'potrace/bezier.cpp' Cython extension (up-to-date)
building 'potrace.bezier' extension
clang -fno-strict-aliasing -fno-common -dynamic -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -mno-fused-madd -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -Os -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch i386 -arch x86_64 -pipe -I/System/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c potrace/bezier.cpp -o build/temp.macosx-10.8-intel-2.7/potrace/bezier.o
clang: warning: argument unused during compilation: '-mno-fused-madd'
potrace/bezier.cpp:201:10: fatal error: 'numpy/arrayobject.h' file not found
#include "numpy/arrayobject.h"
         ^
1 error generated.
error: command 'clang' failed with exit status 1  

Thanks a lot for your help. I will try to work this out another way. Maybe using bash or an Ubuntu machine.

[otherthings]

I'm trying to install pypotrace on MaxOSX 10.8, and running into the exact same series of problems. I got as far as the "'potracelib.h' not found" error before realizing this thread didn't actually lead to a solution.

Has anyone yet succeeded in installing pypotrace on a Mac? If so, any tips would be much appreciated!

[mkf]

Yeah, I have the problem with potracelib.h on OS X as well as on Linux, and any suggestions would be appreciated. BTW, the not-automatically-handled dependency Cython.Distutils is kinda' annoying as well.

[mkf]

I've walked through all the steps of @fabiantheblind's unsuccessful attempt, and it ain't started working yet on OS X.

I managed to install pypotrace on Linux though; maybe it's kinda' off-topic, but I have a problem which may be caused by pypotrace: Archiet/armpen#1 (on Linux)

[gerardonunez]

If someone is interested in installing pypotrace on MacOS, try following the steps below:

1. install potrace and antigraingeometry (agg) from macports: sudo port install potrace sudo port install antigraingeometry

   -> it will install libs on /opt/local/lib and the respective include files on /opt/local/include

2. Make a symlink to the agg dynamic library: cd /opt/local/lib ln -s libagg.dylib libagg_pic.dylib
3. Install cython: pip install cython

4. Determine the location of the site-packages directory. You can get it with:

   export PYTHONSITEPKG=$(python -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") echo $PYTHONSITEPKG

   If you are working from a virtual env with default configuration it should probably look as: /Users/yourlogin/.virtualenvs/yourvirtenv/lib/python2.7/site-packages

5. Check you do have numpy installed for this version of python. For example: ls $PYTHONSITEPKG/numpy

6. Install pypotrace telling the compiler where to find the include files (-I) and the libraries (-L):

   pip install \ --global-option=build_ext \ --global-option="-I/opt/local/include:$PYTHONSITEPKG/numpy/core/include" \ --global-option='-L/opt/local/lib' \ pypotrace

(Worked with: MacOS 10.9.4 and Python 2.7.5)

[flupke]

I now have access to a mac and updated the setup.py. It now relies on pkg-config for libagg and build should be more reliable accross platforms. numpy include directories are also now retrieved with numpy.get_include().

The README is updated and building should be more simple now. I tried the instructions on OSX 10.10 and Ubuntu 14.04, but I would appreciate if you could try on your systems.

I also regenerated the cython extensions and fixed a segfault when passing None to Bitmap constructor.

[flupke]

No news is good news, I'll close the issue. Don't hesitate to reopen it if you encounter any problem.

[justmichaelwang]

Hi there, I am on OS 10.11.2, when i did the last step which is $pip install .

It gives me the output below: Processing /Users/mwang/Desktop/HappyHackers/re/PyOpenGL_season_02/pypotrace Complete output from command python setup.py egg_info: Traceback (most recent call last): File "", line 1, in File "/private/var/folders/73/661v1s_d41j4bv5twvpsykgw0000gp/T/pip-hmzb96jc-build/setup.py", line 70, in cython=CYTHONIZE), File "/private/var/folders/73/661v1s_d41j4bv5twvpsykgw0000gp/T/pip-hmzb96jc-build/setup.py", line 51, in create_ext_obj pkg_config_flags = get_flags(flags, flag) File "/private/var/folders/73/661v1s_d41j4bv5twvpsykgw0000gp/T/pip-hmzb96jc-build/setup.py", line 24, in get_flags return [flag[2:] for flag in flags if flag.startswith(prefix)] File "/private/var/folders/73/661v1s_d41j4bv5twvpsykgw0000gp/T/pip-hmzb96jc-build/setup.py", line 24, in return [flag[2:] for flag in flags if flag.startswith(prefix)] TypeError: startswith first arg must be bytes or a tuple of bytes, not str

----------------------------------------

Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/73/661v1s_d41j4bv5twvpsykgw0000gp/T/pip-hmzb96jc-build/

Would anybody be so kind to help me?

[justmichaelwang]

BTW, i am using Python 3.5.4 :: Anaconda custom (x86_64)

[yig]

This is a Python 3 issue. It's fixed on github, but apparently not the version on PyPI. Try:

pip3 install -e git+https://github.com/flupke/pypotrace#egg=pypotrace

[yig]

UPDATE: This is now fixed on PyPI. pip3 install pypotrace should work.

[whistler]

pip3 install pypotrace does not work for me but pip3 install -e git+https://github.com/flupke/pypotrace#egg=pypotrace does.

[shreevatsa]

It's already mentioned at https://github.com/flupke/pypotrace#osx (link), but don't forget to run:

brew install libagg pkg-config potrace

before pip3 install pypotrace.

[vwrobel]

Hi all,

I am on OS X Big Sur 11.1.

I have run brew install libagg pkg-config potrace successfully.

I use a conda environment with Python 3.7.4, Cython==0.29.13 and numpy 1.17.4.

Wheter I do pip3 install pypotrace or pip3 install -e git+https://github.com/flupke/pypotrace#egg=pypotrace or git clone... pip install ., I get this error trace:

Installing collected packages: pypotrace
  Running setup.py develop for pypotrace
    ERROR: Command errored out with exit status 1:
     command: /Users/vwrobel/opt/anaconda3/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/Users/vwrobel/Workshop/src/pypotrace/setup.py'"'"'; __file__='"'"'/Users/vwrobel/Workshop/src/pypotrace/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' develop --no-deps
         cwd: /Users/vwrobel/Workshop/src/pypotrace/
    Complete output (18 lines):
    running develop
    running egg_info
    writing pypotrace.egg-info/PKG-INFO
    writing dependency_links to pypotrace.egg-info/dependency_links.txt
    writing requirements to pypotrace.egg-info/requires.txt
    writing top-level names to pypotrace.egg-info/top_level.txt
    reading manifest file 'pypotrace.egg-info/SOURCES.txt'
    reading manifest template 'MANIFEST.in'
    writing manifest file 'pypotrace.egg-info/SOURCES.txt'
    running build_ext
    building 'potrace._potrace' extension
    x86_64-apple-darwin13.4.0-clang -fno-strict-aliasing -Wsign-compare -Wunreachable-code -DNDEBUG -fwrapv -O3 -Wall -Wstrict-prototypes -march=core2 -mtune=haswell -mssse3 -ftree-vectorize -fPIC -fPIE -fstack-protector-strong -O3 -pipe -fdebug-prefix-map=${SRC_DIR}=/usr/local/src/conda/${PKG_NAME}-${PKG_VERSION} -fdebug-prefix-map=/Users/vwrobel/opt/anaconda3=/usr/local/src/conda-prefix -flto -Wl,-export_dynamic -march=core2 -mtune=haswell -mssse3 -ftree-vectorize -fPIC -fPIE -fstack-protector-strong -O3 -march=core2 -mtune=haswell -mssse3 -ftree-vectorize -fPIC -fPIE -fstack-protector-strong -O2 -pipe -isystem /Users/vwrobel/opt/anaconda3/envs/workshop/include -D_FORTIFY_SOURCE=2 -mmacosx-version-min=10.9 -isystem /Users/vwrobel/opt/anaconda3/envs/workshop/include -I/Users/vwrobel/.local/lib/python3.7/site-packages/numpy/core/include -I/Users/vwrobel/opt/anaconda3/include/python3.7m -c potrace/_potrace.c -o build/temp.macosx-10.9-x86_64-3.7/potrace/_potrace.o
    clang-10: warning: -Wl,-export_dynamic: 'linker' input unused [-Wunused-command-line-argument]
    potrace/_potrace.c:618:10: fatal error: 'potracelib.h' file not found
    #include "potracelib.h"
             ^~~~~~~~~~~~~~
    1 error generated.
    error: command 'x86_64-apple-darwin13.4.0-clang' failed with exit status 1
    ----------------------------------------
ERROR: Command errored out with exit status 1: /Users/vwrobel/opt/anaconda3/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/Users/vwrobel/Workshop/src/pypotrace/setup.py'"'"'; __file__='"'"'/Users/vwrobel/Workshop/src/pypotrace/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' develop --no-deps Check the logs for full command output.

potracelib.h is symlinked to /usr/local/include by homebrew.

I would appreciate very much any help!

[vwrobel]

In case anyone runs into the above problem: I could not install pypotrace in a conda environment but it is ok on a virtualenv (I had to reinstall homebrew though in my particular case).