Fix error handling when importing NumPy for Pythran modules.

Cython/Compiler/ModuleNode.py

@@ -2314,7 +2314,8 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
             code.putln("#endif")
 
         code.putln("/*--- Library function declarations ---*/")
-        env.generate_library_function_declarations(code)
+        if env.directives['np_pythran']:
+            code.put_error_goto_if_neg(self.pos, "_import_array()")
 
         code.putln("/*--- Threads initialization code ---*/")
         code.putln("#if defined(__PYX_FORCE_INIT_THREADS) && __PYX_FORCE_INIT_THREADS")

Cython/Compiler/Symtab.py

@@ -901,10 +901,6 @@ class Scope(object):
     def use_entry_utility_code(self, entry):
         self.global_scope().use_entry_utility_code(entry)
 
-    def generate_library_function_declarations(self, code):
-        # Generate extern decls for C library funcs used.
-        pass
-
     def defines_any(self, names):
         # Test whether any of the given names are defined in this scope.
         for name in names:
@@ -1240,10 +1236,6 @@ class ModuleScope(Scope):
             scope = scope.find_submodule(submodule)
         return scope
 
-    def generate_library_function_declarations(self, code):
-        if self.directives['np_pythran']:
-            code.putln("import_array();")
-
     def lookup_submodule(self, name):
         # Return scope for submodule of this module, or None.
         if '.' in name: