diff --git a/Makefile.in b/Makefile.in
index 9bf8fe98b48..48a12933105 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -116,11 +116,15 @@ rust: $(CFG_RUSTC)
 
 # Strip off submodule paths to determine "raw" submodule names.
 SUBMODULES=$(shell echo $(CFG_SUBMODULES) | perl -p -e 's![A-Za-z0-9_-]+/!!g')
+SUBMODULES_RUSTPKG=$(shell echo $(CFG_SUBMODULES_RUSTPKG) | perl -p -e 's![A-Za-z0-9_-]+/!!g')
 
-# Define e.g. PATH_rust-io-surface = platform/macos/rust-io-surface
+# Define e.g. PATH_skia = support/skia/skia
 $(foreach submodule,$(CFG_SUBMODULES),\
 $(eval PATH_$(shell echo $(submodule) | perl -p -e 's![A-Za-z0-9_-]+/!!g') = $(submodule)))
 
+$(foreach submodule,$(CFG_SUBMODULES_RUSTPKG),\
+$(eval PATH_$(shell echo $(submodule) | perl -p -e 's![A-Za-z0-9_-]+/!!g') = $(submodule)))
+
 define DEF_SUBMODULE_VARS
 
 #defaults 
@@ -128,7 +132,7 @@ DEPS_$(1) =
 CFLAGS_$(1) = -O2
 
 #if global cflags set, inherit that
-ifneq ($$(CFLAGS),)
+ifdef CFLAGS
 	CFLAGS_$(1) = $$(CFLAGS) 
 endif
 
@@ -142,37 +146,49 @@ DEPS_SUBMODULES += $$(PATH_$(1))/.libs
 DEPS_SUBMODULES += $$(PATH_$(1))/src/.libs
 endef
 
+DEPS_RUSTPKG = $(CFG_BUILD_HOME)workspace/lib/$(CFG_TARGET_TRIPLES)
+
 # these will get populated.
 DEPS_SUBMODULES =
 
 $(foreach submodule,$(SUBMODULES),\
 $(eval $(call DEF_SUBMODULE_VARS,$(submodule))))
 
+$(foreach submodule,$(SUBMODULES_RUSTPKG),\
+$(eval DONE_$(submodule) = $(DEPS_RUSTPKG)/lib$(submodule)*))
+
+# Handle rust submodule vars specially
+DONE_rust = $(CFG_RUSTC)
+
 # include submodule dependencies configuration
 include $(S)mk/sub.mk
 
+# Define how to compute approximate submodule dependencies.
+# TODO: this may be a bit brutish, but is there a better way?
+define DEF_SUBMODULE_DEPS
+ROUGH_DEPS_$(1)=$$(call rwildcard,$$(S)src/$$(PATH_$(1)),*h *c *cpp *rs *rc)
+DONE_DEPS_$(1)=$$(foreach dep,$$(DEPS_$(1)),$$(DONE_$$(dep)))
+# the main target for a submodule
+endef
+
 # Define how to make submodule targets
 define DEF_SUBMODULE_RULES
 
-ENV_RLDFLAGS_$(1) = $$(foreach dep,$$(DEPS_$(1)),-L $$(B)src/$$(PATH_$$(dep)) -L $$(B)src/$$(PATH_$$(dep))/.libs -L $$(B)src/$$(PATH_$$(dep))/src/.libs)
+ENV_RLDFLAGS_$(1) = -L $$(CFG_BUILD_HOME)workspace/lib/$$(CFG_TARGET_TRIPLES)
+ENV_RLDFLAGS_$(1) += $$(foreach dep,$$(DEPS_$(1)),-L $$(B)src/$$(PATH_$$(dep)) -L $$(B)src/$$(PATH_$$(dep))/.libs -L $$(B)src/$$(PATH_$$(dep))/src/.libs)
 
 # variables that depend on dependency definitions from sub.mk!
 ENV_CFLAGS_$(1) = CFLAGS="$$(CFLAGS_$(1))"
 ENV_RFLAGS_$(1) = RUSTFLAGS="$$(strip $$(CFG_RUSTC_FLAGS)) $$(ENV_RLDFLAGS_$(1))"
 
-# use a rough approximation of submodule dependencies to trigger calling submodule make
-# whenever a submodule changes
-# TODO: this may be a bit brutish, but is there a better way?
-ROUGH_DEPS_$(1)=$$(call rwildcard,$$(S)src/$$(PATH_$(1)),*h *c *cpp *rs *rc)
-DONE_DEPS_$(1)=$$(foreach dep,$$(DEPS_$(1)),$$(DONE_$$(dep)))
-# the main target for a submodule
-# --
-
 # Native builds do not depend on the rust compiler, so we can build them in parallel with rustc
+RUSTC_DEP_$(1)=
 ifneq "$$(filter $(1),$$(NATIVE_BUILDS))" "$(1)"
 RUSTC_DEP_$(1)=$$(CFG_RUSTC)
 endif
 
+$(eval $(call DEF_SUBMODULE_DEPS,$(1)))
+
 $$(DONE_$(1)) : $$(DONE_DEPS_$(1)) $$(ROUGH_DEPS_$(1)) $$(RUSTC_DEP_$(1))
 #	@$$(call E, make: $(1))
 #	@$$(call E, $(1) deps= $$(DEPS_$(1)))
@@ -180,7 +196,6 @@ $$(DONE_$(1)) : $$(DONE_DEPS_$(1)) $$(ROUGH_DEPS_$(1)) $$(RUSTC_DEP_$(1))
 #	@$$(call E, $(1) cflags= $$(ENV_CFLAGS_$(1)))
 #	@$$(call E, $(1) cxxflags= $$(ENV_CXXFLAGS_$(1)))
 #	@$$(call E, $(1) rflags= $$(ENV_RFLAGS_$(1)))
-
 	$$(Q) \
 	$$(ENV_CFLAGS_$(1)) \
 	$$(ENV_CXXFLAGS_$(1)) \
@@ -195,46 +210,53 @@ endef
 $(foreach submodule,$(SUBMODULES),\
 $(eval $(call DEF_SUBMODULE_RULES,$(submodule))))
 
-DONE_SUBMODULES = $(foreach submodule,$(SUBMODULES),$(DONE_$(submodule)))
+# include rustpkg rules
+include $(S)mk/rustpkg.mk
 
-RFLAGS_util = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES))
+$(foreach submodule,$(SUBMODULES_RUSTPKG),\
+$(eval $(call DEF_SUBMODULE_RUSTPKG_RULES,$(submodule))))
+
+DONE_SUBMODULES = $(foreach submodule,$(SUBMODULES),$(DONE_$(submodule)))
+DONE_SUBMODULES_RUSTPKG = $(foreach submodule,$(SUBMODULES_RUSTPKG),$(DONE_$(submodule)))
+
+RFLAGS_util = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(DEPS_RUSTPKG)
 SRC_util = $(call rwildcard,$(S)src/components/util/,*.rs)
 CRATE_util = $(S)src/components/util/util.rc
 DONE_util = $(B)src/components/util/libutil.dummy
 
-DEPS_util = $(CRATE_util) $(SRC_util) $(DONE_SUBMODULES)
+DEPS_util = $(CRATE_util) $(SRC_util) $(DONE_SUBMODULES) $(DONE_SUBMODULES_RUSTPKG) | $(SUBMODULES_RUSTPKG)
 
-RFLAGS_net = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/components/util
+RFLAGS_net = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/components/util -L $(DEPS_RUSTPKG)
 SRC_net = $(call rwildcard,$(S)src/components/net/,*.rs)
 CRATE_net = $(S)src/components/net/net.rc
 DONE_net = $(B)src/components/net/libnet.dummy
 
-DEPS_net = $(CRATE_net) $(SRC_net) $(DONE_SUBMODULES) $(DONE_util)
+DEPS_net = $(CRATE_net) $(SRC_net) $(DONE_SUBMODULES) $(DONE_util) $(DONE_SUBMODULES_RUSTPKG) | $(SUBMODULES_RUSTPKG)
 
-RFLAGS_msg = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES))
+RFLAGS_msg = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(DEPS_RUSTPKG)
 SRC_msg = $(call rwildcard,$(S)src/components/msg/,*.rs)
 CRATE_msg = $(S)src/components/msg/msg.rc
 DONE_msg = $(B)src/components/msg/libmsg.dummy
 
-DEPS_msg = $(CRATE_msg) $(SRC_msg) $(DONE_SUBMODULES)
+DEPS_msg = $(CRATE_msg) $(SRC_msg) $(DONE_SUBMODULES) $(DONE_SUBMODULES_RUSTPKG) | $(SUBMODULES_RUSTPKG)
 
-RFLAGS_gfx = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/components/util -L $(B)src/components/style -L $(B)src/components/net -L $(B)src/components/msg
+RFLAGS_gfx = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/components/util -L $(B)src/components/style -L $(B)src/components/net -L $(B)src/components/msg -L $(DEPS_RUSTPKG)
 SRC_gfx = $(call rwildcard,$(S)src/components/gfx/,*.rs)
 CRATE_gfx = $(S)src/components/gfx/gfx.rc
 DONE_gfx = $(B)src/components/gfx/libgfx.dummy
 
-DEPS_gfx = $(CRATE_gfx) $(SRC_gfx) $(DONE_SUBMODULES) $(DONE_util) $(DONE_style) $(DONE_net) $(DONE_msg)
+DEPS_gfx = $(CRATE_gfx) $(SRC_gfx) $(DONE_SUBMODULES) $(DONE_util) $(DONE_style) $(DONE_net) $(DONE_msg) $(DONE_SUBMODULES_RUSTPKG) | $(SUBMODULES_RUSTPKG)
 
-RFLAGS_script = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/components/util -L $(B)src/components/style -L $(B)src/components/net -L $(B)src/components/msg
+RFLAGS_script = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/components/util -L $(B)src/components/style -L $(B)src/components/net -L $(B)src/components/msg -L $(DEPS_RUSTPKG)
 WEBIDL_script = $(call rwildcard,$(S)src/components/script/,*.webidl)
 AUTOGEN_SRC_script = $(patsubst %.webidl, %Binding.rs, $(WEBIDL_script))
 SRC_script = $(call rwildcard,$(S)src/components/script/,*.rs) $(AUTOGEN_SRC_script)
 CRATE_script = $(S)src/components/script/script.rc
 DONE_script = $(B)src/components/script/libscript.dummy
 
-DEPS_script = $(CRATE_script) $(SRC_script) $(DONE_SUBMODULES) $(DONE_util) $(DONE_style) $(DONE_net) $(DONE_msg)
+DEPS_script = $(CRATE_script) $(SRC_script) $(DONE_SUBMODULES) $(DONE_util) $(DONE_style) $(DONE_net) $(DONE_msg) $(DONE_SUBMODULES_RUSTPKG) | $(SUBMODULES_RUSTPKG)
 
-RFLAGS_style = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/components/util
+RFLAGS_style = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/components/util -L $(DEPS_RUSTPKG)
 MAKO_ZIP = $(S)src/components/style/Mako-0.8.1.zip
 MAKO_style = $(S)src/components/style/properties.rs
 MAKO_SRC_style = $(MAKO_style).mako
@@ -242,14 +264,21 @@ SRC_style = $(call rwildcard,$(S)src/components/style/,*.rs) $(MAKO_style)
 CRATE_style = $(S)src/components/style/style.rc
 DONE_style = $(B)src/components/style/libstyle.dummy
 
-DEPS_style = $(CRATE_style) $(SRC_style) $(DONE_SUBMODULES) $(DONE_util)
+DEPS_style = $(CRATE_style) $(SRC_style) $(DONE_SUBMODULES) $(DONE_util) | $(SUBMODULES_RUSTPKG)
 
-RFLAGS_servo = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/components/gfx -L $(B)src/components/util -L $(B)src/components/net -L $(B)src/components/script -L $(B)src/components/style -L $(B)src/components/msg
+RFLAGS_servo = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/components/gfx -L $(B)src/components/util -L $(B)src/components/net -L $(B)src/components/script -L $(B)src/components/style -L $(B)src/components/msg -L $(DEPS_RUSTPKG)
 
 SRC_servo = $(call rwildcard,$(S)src/components/main/,*.rs)
 CRATE_servo = $(S)src/components/main/servo.rc
 
-DEPS_servo = $(CRATE_servo) $(SRC_servo) $(DONE_SUBMODULES) $(DONE_util) $(DONE_gfx) $(DONE_script) $(DONE_style) $(DONE_net) $(DONE_msg)
+DEPS_servo = $(CRATE_servo) $(SRC_servo) $(DONE_SUBMODULES) $(DONE_util) $(DONE_gfx) $(DONE_script) $(DONE_net) $(DONE_msg) $(DONE_style) $(DONE_SUBMODULES_RUSTPKG) | $(SUBMODULES_RUSTPKG)
+
+SERVO_LIB_CRATES = util net msg gfx script style
+
+# rules that depend on having correct meta-target vars (DEPS_CLEAN, DEPS_servo, etc)
+# and SERVO_LIB_CRATES
+include $(S)mk/check.mk
+include $(S)mk/clean.mk
 
 .DEFAULT_GOAL := all
 .PHONY:	all
@@ -257,8 +286,6 @@ all: servo
 
 # Servo helper libraries
 
-SERVO_LIB_CRATES = util net msg gfx script style
-
 define DEF_LIB_CRATE_RULES
 $$(DONE_$(1)):	$$(DEPS_$(1))
 	@$$(call E, compile: $$@)
@@ -268,11 +295,6 @@ endef
 $(foreach lib_crate,$(SERVO_LIB_CRATES),\
 $(eval $(call DEF_LIB_CRATE_RULES,$(lib_crate))))
 
-# rules that depend on having correct meta-target vars (DEPS_CLEAN, DEPS_servo, etc)
-# and SERVO_LIB_CRATES
-include $(S)mk/check.mk
-include $(S)mk/clean.mk
-
 BINDINGS_SRC = $(S)/src/components/script/dom/bindings/codegen
 
 CACHE_DIR = $(BINDINGS_SRC)/_cache
diff --git a/configure b/configure
index 98b36b87201..ec19c62f85c 100755
--- a/configure
+++ b/configure
@@ -399,6 +399,7 @@ probe CFG_CLANG            clang++
 
 CFG_BUILD_DIR="${CFG_BUILD_HOME}${CFG_TARGET_TRIPLES}/"
 make_dir "${CFG_BUILD_DIR}"
+make_dir "${CFG_BUILD_HOME}/workspace/src"
 
 if [ ! -z "$CFG_LOCAL_RUST_ROOT" ]
 then
@@ -407,6 +408,7 @@ then
         LRV=`${CFG_LOCAL_RUST_ROOT}/bin/rustc --version`
         step_msg "using rustc at: ${CFG_LOCAL_RUST_ROOT} with version: $LRV"
         CFG_RUSTC=${CFG_LOCAL_RUST_ROOT}/bin/rustc
+        CFG_RUSTPKG=${CFG_LOCAL_RUST_ROOT}/bin/rustpkg
         CFG_RUST_HOME=${CFG_LOCAL_RUST_ROOT}
         CFG_LOCAL_RUSTC=1
     else
@@ -416,6 +418,7 @@ else
     step_msg "using in-tree rust compiler"
     # The Rust compiler we're going to build
     CFG_RUSTC="${CFG_BUILD_DIR}src/compiler/rust/${DEFAULT_TARGET_TRIPLE}/stage2/bin/rustc"
+    CFG_RUSTPKG="${CFG_BUILD_DIR}src/compiler/rust/${DEFAULT_TARGET_TRIPLE}/stage2/bin/rustpkg"
     CFG_RUST_HOME="${CFG_BUILD_DIR}src/compiler/rust/${DEFAULT_TARGET_TRIPLE}/stage2"
 fi
 
@@ -482,21 +485,23 @@ then
     done
 fi
 
+CFG_SUBMODULES_RUSTPKG="\
+    support/geom/rust-geom \
+    support/layers/rust-layers \
+    support/opengles/rust-opengles \
+    support/sharegl/sharegl"
+
 CFG_SUBMODULES="\
     support/alert/rust-alert \
     support/azure/rust-azure \
     support/css/rust-cssparser \
-    support/geom/rust-geom \
     support/harfbuzz/rust-harfbuzz \
     support/http/rust-http \
     support/hubbub/libhubbub \
     support/hubbub/rust-hubbub \
-    support/layers/rust-layers \
     support/libparserutils/libparserutils \
     support/nss/nspr \
     support/nss/nss \
-    support/opengles/rust-opengles \
-    support/sharegl/sharegl \
     support/skia/skia \
     support/spidermonkey/mozjs \
     support/spidermonkey/rust-mozjs \
@@ -506,25 +511,29 @@ CFG_SUBMODULES="\
 
 if [ $CFG_OSTYPE = "apple-darwin" ]
 then
-CFG_SUBMODULES="\
-    support/glfw/glfw \
-    support/glfw/glfw-rs \
-    platform/macos/rust-cocoa \
+CFG_SUBMODULES_RUSTPKG="\
     platform/macos/rust-core-foundation \
     platform/macos/rust-core-graphics \
     platform/macos/rust-core-text \
     platform/macos/rust-io-surface \
+    ${CFG_SUBMODULES_RUSTPKG}"
+CFG_SUBMODULES="\
+    support/glfw/glfw \
+    support/glfw/glfw-rs \
+    platform/macos/rust-cocoa \
     ${CFG_SUBMODULES}"
 fi
 
 if [ $CFG_OSTYPE = "unknown-linux-gnu" ]
 then
+CFG_SUBMODULES_RUSTPKG="\
+    platform/linux/rust-xlib \
+    ${CFG_SUBMODULES_RUSTPKG}"
 CFG_SUBMODULES="\
     support/glfw/glfw \
     support/glfw/glfw-rs \
     platform/linux/rust-fontconfig \
     platform/linux/rust-freetype \
-    platform/linux/rust-xlib \
     ${CFG_SUBMODULES}"
 fi
 
@@ -550,8 +559,10 @@ putvar CFG_BUILD_HOME
 putvar CFG_BUILD_DIR
 putvar CFG_CONFIGURE_ARGS
 putvar CFG_SUBMODULES
+putvar CFG_SUBMODULES_RUSTPKG
 putvar CFG_DISABLE_MANAGE_SUBMODULES
 putvar CFG_RUSTC
+putvar CFG_RUSTPKG
 putvar CFG_RUSTC_FLAGS
 putvar CFG_RUST_HOME
 putvar CFG_PATH
diff --git a/mk/clean.mk b/mk/clean.mk
index ccb37f9a7a2..d76b3ada1e2 100644
--- a/mk/clean.mk
+++ b/mk/clean.mk
@@ -49,7 +49,7 @@ clean-style:
 	@$(call E, "cleaning style")
 	$(Q)cd $(B)/src/components/style/ && rm -rf libstyle*.dylib libstyle*.dSYM libstyle*.so $(DONE_style)
 
-clean-servo: clean-gfx clean-util clean-net clean-script clean-msg
+clean-servo: clean-gfx clean-util clean-net clean-script clean-msg clean-style
 	@$(call E, "cleaning servo")
 	$(Q)rm -f servo servo-test $(foreach lib_crate,$(SERVO_LIB_CRATES),servo-test-$(lib_crate)) libservo*.so
 	$(Q)cd $(BINDINGS_SRC) && rm -f *.pkl
diff --git a/mk/rustpkg.mk b/mk/rustpkg.mk
new file mode 100644
index 00000000000..2088f03ac7e
--- /dev/null
+++ b/mk/rustpkg.mk
@@ -0,0 +1,36 @@
+EMPTY=
+SPACE=$(EMPTY) $(EMPTY)
+
+define DEF_SUBMODULE_RUSTPKG_RULES
+
+$(eval $(call DEF_SUBMODULE_DEPS,$(1)))
+
+$(1) : $$(DONE_$(1))
+.PHONY : $(1)
+
+DO_CLEAN_$(1) = rm -rf $$(DONE_$(1)) $(CFG_BUILD_HOME)/workspace/build/$(CFG_TARGET_TRIPLES)/$(1)
+
+EXTRA_RFLAGS_$(1) =
+
+ifeq ($(shell uname -s),Darwin)
+ifeq ($(shell sw_vers | grep -c 10.6),1)
+EXTRA_RFLAGS_$(1) += --cfg mac_10_6
+endif
+ifeq ($(shell sw_vers | grep -c 10.7),1)
+EXTRA_RFLAGS_$(1) += --cfg mac_10_7
+endif
+else
+endif
+
+clean-$(1) :
+	$$(Q) $$(DO_CLEAN_$(1))
+.PHONY : clean-$(1)
+
+# Need to clean otherwise rustpkg won't rebuild.
+$$(DONE_$(1)) : $$(DONE_rust) $$(DONE_DEPS_$(1)) $$(ROUGH_DEPS_$(1))
+	$$(Q) $$(DO_CLEAN_$(1))
+	$$(Q) RUST_PATH=$(CFG_BUILD_HOME)workspace:$(subst $(SPACE),:,$(foreach submodule,$(strip $(CFG_SUBMODULES_RUSTPKG)),$(S)src/$(submodule))) \
+	$(CFG_RUSTPKG) --rust-path-hack install $(CFG_RUSTC_FLAGS) $$(EXTRA_RFLAGS_$(1)) $(1)
+
+endef
+
diff --git a/src/components/gfx/gfx.rc b/src/components/gfx/gfx.rc
index e803ccd2192..4e882ba57b4 100644
--- a/src/components/gfx/gfx.rc
+++ b/src/components/gfx/gfx.rc
@@ -12,8 +12,8 @@
 
 extern mod azure;
 extern mod extra;
-extern mod geom;
-extern mod layers;
+extern mod geom = "rust-geom";
+extern mod layers = "rust-layers";
 extern mod stb_image;
 extern mod servo_net (name = "net");
 extern mod servo_util (name = "util");
@@ -29,9 +29,9 @@ extern mod harfbuzz;
 #[cfg(target_os="linux")] #[cfg(target_os="android")] extern mod freetype;
 
 // Mac OS-specific library dependencies
-#[cfg(target_os="macos")] extern mod core_foundation;
-#[cfg(target_os="macos")] extern mod core_graphics;
-#[cfg(target_os="macos")] extern mod core_text;
+#[cfg(target_os="macos")] extern mod core_foundation = "rust-core-foundation";
+#[cfg(target_os="macos")] extern mod core_graphics = "rust-core-graphics";
+#[cfg(target_os="macos")] extern mod core_text = "rust-core-text";
 
 pub use gfx_font = font;
 pub use gfx_font_context = font_context;
diff --git a/src/components/gfx/platform/macos/font.rs b/src/components/gfx/platform/macos/font.rs
index 9705bb29822..884d71e7064 100644
--- a/src/components/gfx/platform/macos/font.rs
+++ b/src/components/gfx/platform/macos/font.rs
@@ -4,9 +4,9 @@
 
 /// Implementation of Quartz (CoreGraphics) fonts.
 
-extern mod core_foundation;
-extern mod core_graphics;
-extern mod core_text;
+extern mod core_foundation = "rust-core-foundation";
+extern mod core_graphics = "rust-core-graphics";
+extern mod core_text = "rust-core-text";
 
 use font::{CSSFontWeight, FontHandleMethods, FontMetrics, FontTableMethods};
 use font::{FontTableTag, FontWeight100, FontWeight200, FontWeight300, FontWeight400};
@@ -23,13 +23,13 @@ use core_foundation::string::UniChar;
 use core_graphics::data_provider::CGDataProvider;
 use core_graphics::font::{CGFont, CGGlyph};
 use core_graphics::geometry::CGRect;
-use core_graphics;
-use core_text::font::{CTFont, CTFontMethods, CTFontMethodsPrivate};
+use core_text::font::CTFont;
 use core_text::font_descriptor::{SymbolicTraitAccessors, TraitAccessors};
 use core_text::font_descriptor::{kCTFontDefaultOrientation};
 use core_text;
 
 use std::ptr;
+use std::vec;
 
 pub struct FontTable {
     data: CFData,
@@ -48,7 +48,7 @@ impl FontTable {
 
 impl FontTableMethods for FontTable {
     fn with_buffer(&self, blk: &fn(*u8, uint)) {
-        blk(self.data.bytes(), self.data.len());
+        blk(vec::raw::to_ptr(self.data.bytes()), self.data.len() as uint);
     }
 }
 
@@ -80,11 +80,8 @@ impl FontHandle {
 impl FontHandleMethods for FontHandle {
     fn new_from_buffer(_: &FontContextHandle, buf: ~[u8], style: &SpecifiedFontStyle)
                     -> Result<FontHandle, ()> {
-        let fontprov : CGDataProvider = do buf.as_imm_buf |cbuf, len| {
-            core_graphics::data_provider::new_from_buffer(cbuf, len)
-        };
-
-        let cgfont = core_graphics::font::create_with_data_provider(&fontprov);
+        let fontprov = CGDataProvider::from_buffer(buf);
+        let cgfont = CGFont::from_data_provider(fontprov);
         let ctfont = core_text::font::new_from_CGFont(&cgfont, style.pt_size);
 
         let result = Ok(FontHandle {
diff --git a/src/components/gfx/platform/macos/font_list.rs b/src/components/gfx/platform/macos/font_list.rs
index 6b6fc33bdc5..d1533aca166 100644
--- a/src/components/gfx/platform/macos/font_list.rs
+++ b/src/components/gfx/platform/macos/font_list.rs
@@ -8,12 +8,12 @@ use font_list::{FontEntry, FontFamily, FontFamilyMap};
 use platform::macos::font::FontHandle;
 use platform::macos::font_context::FontContextHandle;
 
-use core_foundation::array::CFArray;
-use core_foundation::base::CFWrapper;
+use core_foundation::base::TCFType;
 use core_foundation::string::{CFString, CFStringRef};
-use core_text::font_collection::CTFontCollectionMethods;
 use core_text;
+use core_text::font_descriptor::{CTFontDescriptor, CTFontDescriptorRef};
 
+use std::cast;
 use std::hashmap::HashMap;
 
 pub struct FontListHandle {
@@ -28,10 +28,12 @@ impl FontListHandle {
     }
 
     pub fn get_available_families(&self) -> FontFamilyMap {
-        let family_names: CFArray<CFStringRef> = core_text::font_collection::get_family_names();
+        let family_names = core_text::font_collection::get_family_names();
         let mut family_map: FontFamilyMap = HashMap::new();
         for strref in family_names.iter() {
-            let family_name = CFString::wrap_shared(strref).to_str();
+            let family_name_ref: CFStringRef = unsafe { cast::transmute(strref) };
+            let family_name_cf: CFString = unsafe { TCFType::wrap_under_get_rule(family_name_ref) };
+            let family_name = family_name_cf.to_str();
             debug!("Creating new FontFamily for family: {:s}", family_name);
 
             let new_family = @mut FontFamily::new(family_name);
@@ -46,7 +48,8 @@ impl FontListHandle {
         let family_collection = core_text::font_collection::create_for_family(family.family_name);
         let family_descriptors = family_collection.get_descriptors();
         for descref in family_descriptors.iter() {
-            let desc = CFWrapper::wrap_shared(descref);
+            let descref: CTFontDescriptorRef = unsafe { cast::transmute(descref) };
+            let desc: CTFontDescriptor = unsafe { TCFType::wrap_under_get_rule(descref) };
             let font = core_text::font::new_from_descriptor(&desc, 0.0);
             let handle = FontHandle::new_from_CTFont(&self.fctx, font).unwrap();
 
diff --git a/src/components/main/servo.rc b/src/components/main/servo.rc
index dfe78f8c082..227bae8ab2a 100755
--- a/src/components/main/servo.rc
+++ b/src/components/main/servo.rc
@@ -15,16 +15,15 @@
 
 extern mod alert;
 extern mod azure;
-extern mod geom;
+extern mod geom = "rust-geom";
 extern mod gfx (name = "gfx");
 #[cfg(not(target_os="android"))]
 extern mod glfw;
-//extern mod http_client;
 #[cfg(target_os="android")]
 extern mod glut;
 extern mod js;
-extern mod layers;
-extern mod opengles;
+extern mod layers = "rust-layers";
+extern mod opengles = "rust-opengles";
 extern mod png;
 extern mod script;
 extern mod servo_net (name = "net");
@@ -36,11 +35,9 @@ extern mod stb_image;
 extern mod extra;
 
 #[cfg(target_os="macos")]
-extern mod core_graphics;
+extern mod core_graphics = "rust-core-graphics";
 #[cfg(target_os="macos")]
-extern mod core_text;
-#[cfg(target_os="macos")]
-extern mod io_surface;
+extern mod core_text = "rust-core-text";
 
 use compositing::{CompositorChan, CompositorTask};
 use constellation::Constellation;
diff --git a/src/components/msg/msg.rc b/src/components/msg/msg.rc
index 3811f5bffa7..2cef8db14a2 100644
--- a/src/components/msg/msg.rc
+++ b/src/components/msg/msg.rc
@@ -10,14 +10,14 @@
 
 extern mod azure;
 extern mod extra;
-extern mod geom;
-extern mod layers;
+extern mod geom = "rust-geom";
+extern mod layers = "rust-layers";
 extern mod std;
 
 #[cfg(target_os="macos")]
-extern mod core_foundation;
+extern mod core_foundation = "rust-core-foundation";
 #[cfg(target_os="macos")]
-extern mod io_surface;
+extern mod io_surface = "rust-io-surface";
 
 pub mod compositor_msg;
 pub mod constellation_msg;
diff --git a/src/components/msg/platform/macos/surface.rs b/src/components/msg/platform/macos/surface.rs
index 3bf5f9b5ab7..eee7d091317 100644
--- a/src/components/msg/platform/macos/surface.rs
+++ b/src/components/msg/platform/macos/surface.rs
@@ -8,7 +8,6 @@
 use platform::surface::NativeSurfaceAzureMethods;
 
 use azure::AzSkiaGrGLSharedSurfaceRef;
-use core_foundation::base::CFWrapper;
 use io_surface::IOSurface;
 use layers::platform::surface::NativeSurface;
 use std::cast;
@@ -17,7 +16,7 @@ impl NativeSurfaceAzureMethods for NativeSurface {
     fn from_azure_surface(surface: AzSkiaGrGLSharedSurfaceRef) -> NativeSurface {
         unsafe {
             let io_surface = IOSurface {
-                contents: CFWrapper::wrap_owned(cast::transmute(surface)),
+                obj: cast::transmute(surface),
             };
             NativeSurface::from_io_surface(io_surface)
         }
diff --git a/src/components/net/net.rc b/src/components/net/net.rc
index b8df8855e31..677448b5be6 100644
--- a/src/components/net/net.rc
+++ b/src/components/net/net.rc
@@ -10,7 +10,7 @@
 
 #[feature(globs, managed_boxes)];
 
-extern mod geom;
+extern mod geom = "rust-geom";
 extern mod http;
 extern mod servo_util (name = "util");
 extern mod stb_image;
diff --git a/src/components/script/script.rc b/src/components/script/script.rc
index a2dee9a6943..874d8b1879c 100644
--- a/src/components/script/script.rc
+++ b/src/components/script/script.rc
@@ -13,7 +13,7 @@
 
 #[feature(globs, macro_rules, struct_variant, managed_boxes)];
 
-extern mod geom;
+extern mod geom = "rust-geom";
 extern mod hubbub;
 extern mod js;
 extern mod servo_net (name = "net");
diff --git a/src/components/util/util.rc b/src/components/util/util.rc
index fd2110c839e..5a7fddbb51f 100644
--- a/src/components/util/util.rc
+++ b/src/components/util/util.rc
@@ -11,7 +11,7 @@
 #[feature(macro_rules, managed_boxes)];
 
 extern mod extra;
-extern mod geom;
+extern mod geom = "rust-geom";
 
 pub mod cache;
 pub mod geometry;
diff --git a/src/platform/linux/rust-xlib b/src/platform/linux/rust-xlib
index 71ca7ff52c7..4466b6fb89f 160000
--- a/src/platform/linux/rust-xlib
+++ b/src/platform/linux/rust-xlib
@@ -1 +1 @@
-Subproject commit 71ca7ff52c7f342c95608c00bb0823aa8f39cd34
+Subproject commit 4466b6fb89ffd45222176d9381c19aa474ef8a33
diff --git a/src/platform/macos/rust-cocoa b/src/platform/macos/rust-cocoa
index aeb2040fa5f..809e031c6c4 160000
--- a/src/platform/macos/rust-cocoa
+++ b/src/platform/macos/rust-cocoa
@@ -1 +1 @@
-Subproject commit aeb2040fa5f7f1ca8bafdf88df253693ba18415b
+Subproject commit 809e031c6c423655e3731c15295fb5f6eead53b2
diff --git a/src/platform/macos/rust-core-foundation b/src/platform/macos/rust-core-foundation
index b5ddb54271a..b41b972fbd6 160000
--- a/src/platform/macos/rust-core-foundation
+++ b/src/platform/macos/rust-core-foundation
@@ -1 +1 @@
-Subproject commit b5ddb54271a9f783dce5c966cc2a39f0e52b1e68
+Subproject commit b41b972fbd67f2fba966753d67e735c0431d1cf2
diff --git a/src/platform/macos/rust-core-graphics b/src/platform/macos/rust-core-graphics
index 747fb760771..5439c904951 160000
--- a/src/platform/macos/rust-core-graphics
+++ b/src/platform/macos/rust-core-graphics
@@ -1 +1 @@
-Subproject commit 747fb760771f07038267ae842a6fa1cb35586429
+Subproject commit 5439c904951dcb9435e9c52fb0e53a1d853c5850
diff --git a/src/platform/macos/rust-core-text b/src/platform/macos/rust-core-text
index 63982184a34..c046cbbd346 160000
--- a/src/platform/macos/rust-core-text
+++ b/src/platform/macos/rust-core-text
@@ -1 +1 @@
-Subproject commit 63982184a34edfbf70d436cc6a37b325b4c7a827
+Subproject commit c046cbbd346cc5abead05d17b0f1669110c1cb3e
diff --git a/src/platform/macos/rust-io-surface b/src/platform/macos/rust-io-surface
index a4bd491ddfd..1cb5c927429 160000
--- a/src/platform/macos/rust-io-surface
+++ b/src/platform/macos/rust-io-surface
@@ -1 +1 @@
-Subproject commit a4bd491ddfd5d17bdcb228cf515cce776e2b8239
+Subproject commit 1cb5c9274291d97d87648ced60510f30c54f94a1
diff --git a/src/support/alert/rust-alert b/src/support/alert/rust-alert
index 78a250ecd13..a9fd3aa3ca7 160000
--- a/src/support/alert/rust-alert
+++ b/src/support/alert/rust-alert
@@ -1 +1 @@
-Subproject commit 78a250ecd133d65c9ac46650fe68aab0dc75e467
+Subproject commit a9fd3aa3ca7eba68f4bcd8906e281f27b78fda38
diff --git a/src/support/azure/rust-azure b/src/support/azure/rust-azure
index 10aee62cc9f..13fbdbeddfc 160000
--- a/src/support/azure/rust-azure
+++ b/src/support/azure/rust-azure
@@ -1 +1 @@
-Subproject commit 10aee62cc9f7b47b57fb56acc760af93e4e48005
+Subproject commit 13fbdbeddfccbc3e451fa9ae47f334f4f626a051
diff --git a/src/support/geom/rust-geom b/src/support/geom/rust-geom
index 7fa173a0741..83f47c9b312 160000
--- a/src/support/geom/rust-geom
+++ b/src/support/geom/rust-geom
@@ -1 +1 @@
-Subproject commit 7fa173a07414f4e1bcf3419079d5b812195acc2d
+Subproject commit 83f47c9b3129fed40ae9680d84dade478f331745
diff --git a/src/support/glut/rust-glut b/src/support/glut/rust-glut
index 2550ff84238..3626d203319 160000
--- a/src/support/glut/rust-glut
+++ b/src/support/glut/rust-glut
@@ -1 +1 @@
-Subproject commit 2550ff84238a9b063a920eb41766f84062593b56
+Subproject commit 3626d203319a4d12ac68fecee11e18850e180e78
diff --git a/src/support/layers/rust-layers b/src/support/layers/rust-layers
index d2cde75d928..c86eaa809c9 160000
--- a/src/support/layers/rust-layers
+++ b/src/support/layers/rust-layers
@@ -1 +1 @@
-Subproject commit d2cde75d928572e665942732f0cad4a35faf4182
+Subproject commit c86eaa809c906d70aef4f3af0ac9f7377cc8e8ca
diff --git a/src/support/opengles/rust-opengles b/src/support/opengles/rust-opengles
index 90152e93e02..0d470981726 160000
--- a/src/support/opengles/rust-opengles
+++ b/src/support/opengles/rust-opengles
@@ -1 +1 @@
-Subproject commit 90152e93e0277106e7a21dd2c5cc287efe0da053
+Subproject commit 0d47098172620e4e10d1639732c9755eb9956e0f
diff --git a/src/support/sharegl/sharegl b/src/support/sharegl/sharegl
index 1867a2b938f..b80b6cd976a 160000
--- a/src/support/sharegl/sharegl
+++ b/src/support/sharegl/sharegl
@@ -1 +1 @@
-Subproject commit 1867a2b938f459815935c099d3aa88eac594fd30
+Subproject commit b80b6cd976a75a329abbed72a0c999797a20f5a9