diff -up src/module_list.py.orig src/module_list.py
--- src/module_list.py.orig	2016-12-21 12:24:59.301116425 -0500
+++ src/module_list.py	2016-12-21 12:25:33.927117751 -0500
@@ -36,7 +36,7 @@ givaro_cflags = pkgconfig.cflags('givaro
 # GNU Scientific Library
 # Note we replace the built-in gslcblas with the above cblas
 gsl_pc = pkgconfig.parse('gsl')
-gsl_libs = list(gsl_pc['libraries'].difference(['gslcblas']).union(cblas_libs))
+gsl_libs = list(set(gsl_pc['libraries']).difference(['gslcblas']).union(cblas_libs))
 gsl_library_dirs = list(cblas_pc['library_dirs'])
 gsl_include_dirs = list(gsl_pc['include_dirs'])
 
diff -up src/setup.py.orig src/setup.py
--- src/setup.py.orig	2016-12-21 12:26:52.909120775 -0500
+++ src/setup.py	2016-12-21 12:27:00.759121076 -0500
@@ -565,9 +565,9 @@ def run_cythonize():
 
     # Sage uses these directives (mostly for historical reasons).
     Cython.Compiler.Options.embed_pos_in_docstring = True
-    Cython.Compiler.Options.directive_defaults['autotestdict'] = False
-    Cython.Compiler.Options.directive_defaults['cdivision'] = True
-    Cython.Compiler.Options.directive_defaults['fast_getattr'] = True
+    Cython.Compiler.Options._directive_defaults['autotestdict'] = False
+    Cython.Compiler.Options._directive_defaults['cdivision'] = True
+    Cython.Compiler.Options._directive_defaults['fast_getattr'] = True
     # The globals() builtin in Cython was fixed to return to the current scope,
     # but Sage relies on the broken behavior of returning to the nearest
     # enclosing Python scope (e.g. to perform variable injection).