Update list of GEOS candidate locations in setup.py

Author: molinav

CHANGELOG.md

@@ -7,6 +7,10 @@ since version 1.3.0.
 
 ## [Unreleased]
 
+### Added
+- Add `"/usr/lib/x86_64-linux-gnu"` to list of candidate locations to
+  search the GEOS library during installation.
+
 ### Changed
 - Split lint and test requirements into two separate files.
 

packages/basemap/setup.py

@@ -35,11 +35,11 @@ def get_geos_install_prefix():
         candidates = [env_candidate]
     else:
         candidates = [os.path.expanduser("~/local"), os.path.expanduser("~"),
-                    "/usr/local", "/usr", "/opt/local", "/opt", "/sw"]
+                      "/usr/local", "/usr", "/opt/local", "/opt", "/sw"]
 
     for prefix in candidates:
         libfiles = []
-        libdirs = ["bin", "lib", "lib64"]
+        libdirs = ["bin", "lib", "lib/x86_64-linux-gnu", "lib64"]
         libext = "dll" if os.name == "nt" else "so"
         libcode = "{0}geos_c".format("" if os.name == "nt" else "lib")
         libname = "{0}*.{1}*".format(libcode, libext)