I was trying to compile Python extensions for Samba on FreeBSD with the external
libiconv preselected and linking of the modules failed, as linker wasn't able to
find location of the libiconv. After looking into the Makefile, I found, that
$(LDFLAGS) or it's equivalent is not passed together with the list of libraries
to the setup.py program. After adding it setup.py start to die, complaining
about unknown -Wl,/usr/local/lib flag. So, here are the patches to fix the problem:

--- python/setup.py.orig        Thu Mar  4 05:28:18 2004
+++ python/setup.py     Thu Mar  4 05:29:35 2004
@@ -57,6 +57,9 @@
     if lib[0:2] == "-L":
         library_dirs.append(lib[2:])
         continue
+    if lib[0:2] == "-W":
+       # Skip linker flags
+       continue
     print "Unknown entry '%s' in $LIBS variable passed to setup.py" % lib
     sys.exit(1)
--- Makefile.in.orig    Fri Feb  6 23:40:27 2004
+++ Makefile.in Thu Mar  4 05:47:34 2004
@@ -1276,7 +1277,7 @@
        fi
        PYTHON_OBJS="$(PYTHON_PICOBJS)" \
        PYTHON_CFLAGS="$(CFLAGS) $(CPPFLAGS) $(FLAGS)" \
-       LIBS="$(LIBS) $(PASSDB_LIBS) $(IDMAP_LIBS) $(KRB5LIBS) $(LDAP_LIBS)" \
+       LIBS="$(LDFLAGS) $(LIBS) $(PASSDB_LIBS) $(IDMAP_LIBS) $(KRB5LIBS)
$(LDAP_LIBS)" \
                $(PYTHON) python/setup.py build
  
 python_install: $(PYTHON_PICOBJS)
@@ -1286,7 +1287,7 @@
        fi
        PYTHON_OBJS="$(PYTHON_PICOBJS)" \
        PYTHON_CFLAGS="$(CFLAGS) $(CPPFLAGS)" \
-       LIBS="$(LIBS)" \
+       LIBS="$(LDFLAGS) $(LIBS)" \
                $(PYTHON) python/setup.py install
  
 python_clean:


I haven't check pythion_install: target, just copied necessary files as sugested
in python/README, but passing just $(LIBS) in it also looks a bit suspicious...