diff --git a/configure b/configure
index 7b38465278b..6dbd320d078 100755
--- a/configure
+++ b/configure
@@ -323,31 +323,6 @@ else
     CFG_RUSTC="${CFG_BUILD_DIR}src/rust/${DEFAULT_HOST_TRIPLE}/stage2/bin/rustc"
 fi
 
-if [ ! -z "$CFG_ENABLE_CLANG" ]
-then
-    if [ -z "$CFG_CLANG" ]
-    then
-	err "clang requested but not found"
-    fi
-    CFG_CLANG_VERSION=$("$CFG_CLANG" \
-                      --version \
-                      | grep version \
-                      | sed 's/.*\(version .*\)/\1/' \
-                      | cut -d ' ' -f 2)
-
-    case $CFG_CLANG_VERSION in
-        (3.0svn | 3.0 | 3.1 | 4.0)
-        step_msg "found ok version of CLANG: $CFG_CLANG_VERSION"
-        CFG_C_COMPILER="clang"
-        ;;
-        (*)
-        err "bad CLANG version: $CFG_CLANG_VERSION, need >=3.0svn"
-        ;;
-    esac
-else
-    CFG_C_COMPILER="gcc"
-fi
-
 if [ -z "$CFG_ENABLE_CLANG" -a -z "$CFG_GCC" ]
 then
     err "either clang or gcc is required"
@@ -520,7 +495,6 @@ putvar CFG_OSTYPE
 putvar CFG_SRC_DIR
 putvar CFG_BUILD_DIR
 putvar CFG_CONFIGURE_ARGS
-putvar CFG_C_COMPILER
 putvar CFG_SUBMODULES
 putvar CFG_DISABLE_MANAGE_SUBMODULES
 putvar CFG_RUSTC
diff --git a/src/mozjs b/src/mozjs
index 50f2e99633b..19a4939e13f 160000
--- a/src/mozjs
+++ b/src/mozjs
@@ -1 +1 @@
-Subproject commit 50f2e99633bf28f24b284821dbb723b38f2756e0
+Subproject commit 19a4939e13f2387cb7831623480d91301092c202
diff --git a/src/rust-azure b/src/rust-azure
index ce67fb0a051..985549a76ee 160000
--- a/src/rust-azure
+++ b/src/rust-azure
@@ -1 +1 @@
-Subproject commit ce67fb0a051293effb53122cd078a66c8fbe2828
+Subproject commit 985549a76eeeb5d10aae40812154424629534811
diff --git a/src/rust-core-foundation b/src/rust-core-foundation
index 4d0a8c1ca4d..a8ebe76090d 160000
--- a/src/rust-core-foundation
+++ b/src/rust-core-foundation
@@ -1 +1 @@
-Subproject commit 4d0a8c1ca4d1f8b7036e3154a49f4066a3284697
+Subproject commit a8ebe76090dd67f24a9da41404878f5316afbf6a
diff --git a/src/rust-css b/src/rust-css
index 55fc4d7f9b1..df1490e1ad4 160000
--- a/src/rust-css
+++ b/src/rust-css
@@ -1 +1 @@
-Subproject commit 55fc4d7f9b171d8e5e681ff3656b34785b79d2af
+Subproject commit df1490e1ad4f7af5f8fe42261816c94a5fa2a4b4
diff --git a/src/rust-fontconfig b/src/rust-fontconfig
index 7cb7a7aace9..88b5ecfee06 160000
--- a/src/rust-fontconfig
+++ b/src/rust-fontconfig
@@ -1 +1 @@
-Subproject commit 7cb7a7aace99b17f99f15649377bb13a0dac9b63
+Subproject commit 88b5ecfee0669b283b489d46df51e3fcbf6c6727
diff --git a/src/rust-geom b/src/rust-geom
index 01d031b0c1c..25da45eb51c 160000
--- a/src/rust-geom
+++ b/src/rust-geom
@@ -1 +1 @@
-Subproject commit 01d031b0c1ca824382de5dcdd6d98799136346af
+Subproject commit 25da45eb51c8444e1aa2245c22daa8d1903a04a0
diff --git a/src/rust-harfbuzz b/src/rust-harfbuzz
index 513357cae84..bbd2f39cde4 160000
--- a/src/rust-harfbuzz
+++ b/src/rust-harfbuzz
@@ -1 +1 @@
-Subproject commit 513357cae8422a83bc202a28e77ddc43187b3de1
+Subproject commit bbd2f39cde4ab08b55f641390be154b59678aecf
diff --git a/src/rust-opengles b/src/rust-opengles
index fd81a10887c..82c8acc14e1 160000
--- a/src/rust-opengles
+++ b/src/rust-opengles
@@ -1 +1 @@
-Subproject commit fd81a10887caf6bc3efb0b53efdffa4bfca4c078
+Subproject commit 82c8acc14e1024706dfde215e5fe3e48a184ad5e
diff --git a/src/rust-wapcaplet b/src/rust-wapcaplet
index 22e65e5fd44..1afc08b508d 160000
--- a/src/rust-wapcaplet
+++ b/src/rust-wapcaplet
@@ -1 +1 @@
-Subproject commit 22e65e5fd44508f6565f914a844fa314c3545608
+Subproject commit 1afc08b508d4980342a715a5d3faef63ac4389c3
diff --git a/src/sharegl b/src/sharegl
index b9434228ce8..13204263ab4 160000
--- a/src/sharegl
+++ b/src/sharegl
@@ -1 +1 @@
-Subproject commit b9434228ce8cf24fe9686e392c9661fc049b5b64
+Subproject commit 13204263ab4efd00bcd699c8e120c9e6a52e785c
diff --git a/src/skia b/src/skia
index c58b7def2e0..4af44051988 160000
--- a/src/skia
+++ b/src/skia
@@ -1 +1 @@
-Subproject commit c58b7def2e00d2fc6ab224db00439d39648db7c9
+Subproject commit 4af440519885bc45ed51349e9b501b1550f75d9c