--- Django-2.0.orig/django/contrib/gis/geos/libgeos.py	2017-12-02 12:36:16.000000000 -0200
+++ Django-2.0/django/contrib/gis/geos/libgeos.py	2017-12-06 08:12:35.806014360 -0200
@@ -8,8 +8,8 @@
 """
 import logging
 import os
+import sys
 from ctypes import CDLL, CFUNCTYPE, POINTER, Structure, c_char_p
-from ctypes.util import find_library
 
 from django.core.exceptions import ImproperlyConfigured
 from django.utils.functional import SimpleLazyObject, cached_property
@@ -19,47 +19,27 @@
 
 
 def load_geos():
-    # Custom library path set?
-    try:
-        from django.conf import settings
-        lib_path = settings.GEOS_LIBRARY_PATH
-    except (AttributeError, EnvironmentError,
-            ImportError, ImproperlyConfigured):
-        lib_path = None
-
-    # Setting the appropriate names for the GEOS-C library.
-    if lib_path:
-        lib_names = None
-    elif os.name == 'nt':
-        # Windows NT libraries
-        lib_names = ['geos_c', 'libgeos_c-1']
-    elif os.name == 'posix':
-        # *NIX libraries
-        lib_names = ['geos_c', 'GEOS']
-    else:
-        raise ImportError('Unsupported OS "%s"' % os.name)
-
-    # Using the ctypes `find_library` utility to find the path to the GEOS
-    # shared library.  This is better than manually specifying each library name
-    # and extension (e.g., libgeos_c.[so|so.1|dylib].).
-    if lib_names:
-        for lib_name in lib_names:
-            lib_path = find_library(lib_name)
-            if lib_path is not None:
-                break
-
-    # No GEOS library could be found.
-    if lib_path is None:
-        raise ImportError(
-            'Could not find the GEOS library (tried "%s"). '
-            'Try setting GEOS_LIBRARY_PATH in your settings.' %
-            '", "'.join(lib_names)
-        )
     # Getting the GEOS C library.  The C interface (CDLL) is used for
     # both *NIX and Windows.
     # See the GEOS C API source code for more details on the library function calls:
     #  http://geos.refractions.net/ro/doxygen_docs/html/geos__c_8h-source.html
-    _lgeos = CDLL(lib_path)
+    if os.name == 'posix':
+        platform = os.uname()[0]
+        if platform == 'Linux':
+            libname = 'libgeos_c.so'
+        elif platform == 'Darwin':
+            libname = 'libgeos_c.dylib'
+        _lgeos = CDLL(os.path.join(sys.prefix, 'lib', libname))
+    elif os.name == 'nt':
+        # On Windows, the GDAL binaries have some OSR routines exported with
+        # STDCALL, while others are not.  Thus, the library will also need to
+        # be loaded up as WinDLL for said OSR functions that require the
+        # different calling convention.
+        libname = os.path.join(sys.prefix, 'Library', 'bin', 'geos_c.dll')
+        _lgeos = CDLL(libname)
+    else:
+        raise Exception('No valid platform name. Found {}'.format(os.name))
+
     # Here we set up the prototypes for the initGEOS_r and finishGEOS_r
     # routines.  These functions aren't actually called until they are
     # attached to a GEOS context handle -- this actually occurs in
