Compiling 32bit dependency on 64bit system

[DVPeer]

I'm trying to compile the package pyclipper (https://github.com/greginvm/pyclipper) for `armeabi-v7a`. Using the master branch compilation succeeds but i get the following error upon running the application on my android device: `ImportError: dlopen failed: "/data/data/org.test.hcdpyclipper/files/app/lib/python2.7/site-packages/pyclipper.so" is 64-bit instead of 32-bit`


When using a custom recipe to compile to 32bit I get the following compilation error: `wrong ELF class: ELFCLASS32` when building the dependency.  The recipe I created is:
```from pythonforandroid.toolchain import Recipe, shprint, current_directory, CythonRecipe, PythonRecipe
from os.path import exists, join
import sh
import glob
import pprint
from pprint import pprint

class PyclipperRecipe(PythonRecipe):
    # This could also inherit from PythonRecipe etc. if you want to
    # use their pre-written build processes

    version = '1.1.0'
    url = 'https://github.com/greginvm/pyclipper/releases/download/{version}/pyclipper-{version}.zip'
    # {version} will be replaced with self.version when downloading

    depends = ['python2', 'setuptools']  # A list of any other recipe names
                                    # that must be built before this
                                    # one

    conflicts = []  # A list of any recipe names that cannot be built
                    # alongside this one

    site_packages_name = 'pyclipper'


    def get_recipe_env(self,arch):
        env = super(PyclipperRecipe, self).get_recipe_env(arch)
        # Manipulate the env here if you want
        env['PYTHONPATH'] = ':'.join([self.ctx.get_site_packages_dir()])
        env['LDFLAGS'] += " -m32"
        env['CFLAGS'] += " -m32"
        pprint(env)
        return env


recipe = PyclipperRecipe()
```

[Alexander Taylor]

It looks like pyclipper is a cython module, so try using a CythonRecipe.

[Dennis van Peer]

Unfortunately this gives me the same result 

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[Alexander Taylor]

Hmm, just to check, did you clean the build fully after making this change?

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