Fix build
Index: mozilla-ldap-sdk-6.0.6+dfsg/mozilla/directory/c-sdk/ldap/libraries/libldap/Makefile.in
===================================================================
--- mozilla-ldap-sdk-6.0.6+dfsg.orig/mozilla/directory/c-sdk/ldap/libraries/libldap/Makefile.in	2010-04-19 20:06:21.000000000 +0200
+++ mozilla-ldap-sdk-6.0.6+dfsg/mozilla/directory/c-sdk/ldap/libraries/libldap/Makefile.in	2010-04-19 20:06:42.000000000 +0200
@@ -203,7 +203,7 @@
 endif
 
 ifneq (,$(filter Linux GNU GNU_%, $(OS_ARCH)))
-EXTRA_LIBS = -L$(dist_libdir) -l$(LBER_LIBNAME)
+EXTRA_LIBS = -L$(dist_libdir) -l$(LBER_LIBNAME) -pthread
 endif
 
 ifeq ($(OS_ARCH), WINNT)
