--- a/configure.in
+++ b/configure.in
@@ -8335,20 +8335,16 @@ dnl ====================================
 if test "$MOZ_DEBUG" -o "$NS_TRACE_MALLOC" -o "$MOZ_DMD"; then
     MOZ_COMPONENTS_VERSION_SCRIPT_LDFLAGS=
 fi
 
 if test "$MOZ_APP_COMPONENT_INCLUDE"; then
   AC_DEFINE_UNQUOTED(MOZ_APP_COMPONENT_INCLUDE, "$MOZ_APP_COMPONENT_INCLUDE")
 fi
 
-if test "$MOZ_APP_COMPONENT_MODULES"; then
-  AC_DEFINE_UNQUOTED(MOZ_APP_COMPONENT_MODULES, $MOZ_APP_COMPONENT_MODULES)
-fi
-
 dnl ========================================================
 dnl =
 dnl = Maintainer debug option (no --enable equivalent)
 dnl =
 dnl ========================================================
 
 AC_SUBST(AR)
 AC_SUBST(AR_FLAGS)
@@ -8732,17 +8728,16 @@ AC_SUBST(OBJ_SUFFIX)
 AC_SUBST(BIN_SUFFIX)
 AC_SUBST(ASM_SUFFIX)
 AC_SUBST(IMPORT_LIB_SUFFIX)
 AC_SUBST(USE_N32)
 AC_SUBST(CC_VERSION)
 AC_SUBST(CXX_VERSION)
 AC_SUBST(MSMANIFEST_TOOL)
 AC_SUBST(NS_ENABLE_TSF)
-AC_SUBST_LIST(MOZ_APP_EXTRA_LIBS)
 
 AC_SUBST(MOZ_WAVE)
 AC_SUBST(MOZ_VORBIS)
 AC_SUBST(MOZ_TREMOR)
 AC_SUBST(MOZ_OPUS)
 AC_SUBST(MOZ_WEBM)
 AC_SUBST(MOZ_WMF)
 AC_SUBST(MOZ_FFMPEG)

--- a/toolkit/library/moz.build
+++ b/toolkit/library/moz.build
@@ -159,17 +159,16 @@ if CONFIG['MOZ_B2G_CAMERA']:
 
 if CONFIG['OS_ARCH'] == 'Linux' and CONFIG['OS_TARGET'] != 'Android':
     OS_LIBS += [
         'rt',
     ]
 
 OS_LIBS += CONFIG['MOZ_CAIRO_OSLIBS']
 OS_LIBS += CONFIG['MOZ_WEBRTC_X11_LIBS']
-OS_LIBS += CONFIG['MOZ_APP_EXTRA_LIBS']
 
 if CONFIG['MOZ_NATIVE_JPEG']:
     OS_LIBS += CONFIG['MOZ_JPEG_LIBS']
 
 if CONFIG['MOZ_NATIVE_PNG']:
     OS_LIBS += CONFIG['MOZ_PNG_LIBS']
 
 if CONFIG['MOZ_NATIVE_HUNSPELL']: