Try a fix on the opencv library listing from pkg-config

bob/extension/__init__.py

@@ -313,6 +313,7 @@ class Extension(DistutilsExtension):
     parameters = {
         'define_macros': generate_self_macros(name, version),
         'extra_compile_args': ['-std=c++0x'], #synonym for c++11?
+        'extra_link_args': [],
         'library_dirs': [],
         'libraries': bob_libraries,
         }
@@ -384,6 +385,8 @@ class Extension(DistutilsExtension):
       parameters['libraries'] += libs
       self.pkg_libraries += libs
 
+      parameters['extra_link_args'] += pkg.other_libraries()
+
     # add the -isystem to all system include dirs
     for k in system_includes:
       parameters['extra_compile_args'].extend(['-isystem', k])

bob/extension/pkgconfig.py

@@ -261,6 +261,24 @@ class pkgconfig:
 
     return uniq(retval)
 
+  def other_libraries(self):
+    """Returns a pre-processed list containing libraries to link against
+
+    Equivalent command line version:
+
+    .. code-block:: sh
+
+       $ PKG_CONFIG_PATH=<paths> pkg-config --libs-only-other <name>
+
+    """
+
+    status, stdout, stderr = self.__xcall__(['--libs-only-other'])
+
+    if status != 0:
+      raise RuntimeError("error querying --libs-only-other for package `%s': %s" % (self.name, stderr))
+
+    return uniq(stdout.split())
+
   def library_directories(self):
     """Returns a pre-processed list containing library directories.