Maybe fix hxtorch build

This adds googletest's lib/lib64 isntall folder explicitly to the list
of libraries (it should have been found… but wasn't).

packages/hxtorch/package.py

@@ -85,8 +85,18 @@ class Hxtorch(WafPackage):
 
         # llvm might be built with ~shared_libs but still builds shared libs
         if not any('llvm' in lib for lib in library):
+            print("libs: manually adding ", self.spec['llvm'].prefix.lib)
             library.append(self.spec['llvm'].prefix.lib)
 
+        # explicitly add googletest library if it isn't found above
+        if not any('googletest' in lib for lib in library):
+            if os.path.isdir(self.spec['googletest'].prefix.lib64):
+                print("libs: manually adding ", self.spec['googletest'].prefix.lib64)
+                library.append(self.spec['googletest'].prefix.lib64)
+            if os.path.isdir(self.spec['googletest'].prefix.lib):
+                print("libs: manually adding ", self.spec['googletest'].prefix.lib)
+                library.append(self.spec['googletest'].prefix.lib)
+
         env.set('CPATH', ':'.join(include))
         env.set('C_INCLUDE_PATH', ':'.join(include))
         env.set('CPLUS_INCLUDE_PATH', ':'.join(include))