Seems some or all ifdef's in system-headers does not work after landing 467583: ../../toolkit/xre/libxulapp_s.a(nsNativeAppSupportUnix.o): In function `nsNativeAppSupportUnix::Stop(int*)': mozilla-central/toolkit/xre/nsNativeAppSupportUnix.cpp:391: undefined reference to `osso_hw_unset_event_cb' mozilla-central/toolkit/xre/nsNativeAppSupportUnix.cpp:392: undefined reference to `osso_deinitialize' ../../toolkit/xre/libxulapp_s.a(nsNativeAppSupportUnix.o): In function `nsNativeAppSupportUnix::Start(int*)': mozilla-central/toolkit/xre/nsNativeAppSupportUnix.cpp:299: undefined reference to `osso_initialize' mozilla-central/toolkit/xre/nsNativeAppSupportUnix.cpp:309: undefined reference to `osso_hw_set_event_cb' ../../staticlib/components/libdocshell.a(nsMIMEInfoUnix.o): In function `nsMIMEInfoUnix::LoadUriInternal(nsIURI*)': mozilla-central/uriloader/exthandler/unix/nsMIMEInfoUnix.cpp:60: undefined reference to `hildon_uri_get_default_action' mozilla-central/uriloader/exthandler/unix/nsMIMEInfoUnix.cpp:64: undefined reference to `hildon_uri_open' mozilla-central/uriloader/exthandler/unix/nsMIMEInfoUnix.cpp:66: undefined reference to `hildon_uri_action_unref' ../../staticlib/components/libdocshell.a(nsMIMEInfoUnix.o): In function `nsMIMEInfoUnix::GetHasDefaultHandler(int*)': mozilla-central/uriloader/exthandler/unix/nsMIMEInfoUnix.cpp:88: undefined reference to `hildon_uri_get_default_action' mozilla-central/uriloader/exthandler/unix/nsMIMEInfoUnix.cpp:91: undefined reference to `hildon_uri_action_unref' ../../staticlib/components/libdocshell.a(nsMIMEInfoUnix.o): In function `nsMIMEInfoUnix::GetPossibleApplicationHandlers(nsIMutableArray**)': mozilla-central/uriloader/exthandler/unix/nsMIMEInfoUnix.cpp:131: undefined reference to `hildon_uri_get_actions' mozilla-central/uriloader/exthandler/unix/nsMIMEInfoUnix.cpp:141: undefined reference to `hildon_uri_action_get_method' mozilla-central/uriloader/exthandler/unix/nsMIMEInfoUnix.cpp:142: undefined reference to `hildon_uri_action_get_service' mozilla-central/uriloader/exthandler/unix/nsMIMEInfoUnix.cpp:164: undefined reference to `hildon_uri_free_actions' /scratchbox/compilers/cs2007q3-glibc2.5-i486/bin/../lib/gcc/i486-pc-linux-gnu/4.2.1/../../../../i486-pc-linux-gnu/bin/ld: libxul.so: hidden symbol `hildon_uri_get_default_action' isn't defined /scratchbox/compilers/cs2007q3-glibc2.5-i486/bin/../lib/gcc/i486-pc-linux-gnu/4.2.1/../../../../i486-pc-linux-gnu/bin/ld: final link failed: Nonrepresentable section on output collect2: ld returned 1 exit status make[4]: *** [libxul.so] Error 1 make[4]: Leaving directory `mozilla-central/obj-i386-sb-buildmicrob2/toolkit/library' make[3]: *** [libs_tier_toolkit] Error 2

Dupe of bug 471359? (there's a patch there)