3 files changed, 76 insertions, 23 deletions
diff --git a/src/ci/docker/disabled/wasm32/Dockerfile b/src/ci/docker/disabled/wasm32/Dockerfile
index ad57a1191e4..c75b5d455c5 100644
--- a/src/ci/docker/disabled/wasm32/Dockerfile
+++ b/src/ci/docker/disabled/wasm32/Dockerfile
@@ -20,8 +20,8 @@ COPY scripts/dumb-init.sh /scripts/
 RUN sh /scripts/dumb-init.sh
 
 # emscripten
-COPY scripts/emscripten.sh /scripts/
-RUN bash /scripts/emscripten.sh
+COPY scripts/emscripten-wasm.sh /scripts/
+RUN bash /scripts/emscripten-wasm.sh
 COPY disabled/wasm32/node.sh /usr/local/bin/node
 
 # cache
diff --git a/src/ci/docker/scripts/emscripten-wasm.sh b/src/ci/docker/scripts/emscripten-wasm.sh
new file mode 100644
index 00000000000..e693f975f69
--- /dev/null
+++ b/src/ci/docker/scripts/emscripten-wasm.sh
@@ -0,0 +1,64 @@
+# Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+set -ex
+
+hide_output() {
+  set +x
+  on_err="
+echo ERROR: An error was encountered with the build.
+cat /tmp/build.log
+exit 1
+"
+  trap "$on_err" ERR
+  bash -c "while true; do sleep 30; echo \$(date) - building ...; done" &
+  PING_LOOP_PID=$!
+  $@ &> /tmp/build.log
+  trap - ERR
+  kill $PING_LOOP_PID
+  rm -f /tmp/build.log
+  set -x
+}
+
+# Download emsdk
+cd /
+curl -L https://s3.amazonaws.com/mozilla-games/emscripten/releases/emsdk-portable.tar.gz | \
+    tar -xz
+
+# Download last known good emscripten from WebAssembly waterfall
+BUILD=$(curl -L https://storage.googleapis.com/wasm-llvm/builds/linux/lkgr.json | \
+    jq '.build | tonumber')
+curl -L https://storage.googleapis.com/wasm-llvm/builds/linux/$BUILD/wasm-binaries.tbz2 | \
+    hide_output tar xvkj
+
+# node 8 is required to run wasm
+cd /
+curl -L https://nodejs.org/dist/v8.0.0/node-v8.0.0-linux-x64.tar.xz | \
+    tar -xJ
+
+cd /emsdk-portable
+./emsdk update
+hide_output ./emsdk install sdk-1.37.13-64bit
+./emsdk activate sdk-1.37.13-64bit
+
+# Make emscripten use wasm-ready node and LLVM tools
+echo "NODE_JS='/node-v8.0.0-linux-x64/bin/node'" >> /root/.emscripten
+echo "LLVM_ROOT='/wasm-install/bin'" >> /root/.emscripten
+
+# Make emsdk usable by any user
+cp /root/.emscripten /emsdk-portable
+chmod a+rxw -R /emsdk-portable
+
+# Compile and cache libc
+source ./emsdk_env.sh
+echo "main(){}" > a.c
+HOME=/emsdk-portable/ emcc a.c
+HOME=/emsdk-portable/ emcc -s WASM=1 a.c
+rm -f a.*
diff --git a/src/ci/docker/scripts/emscripten.sh b/src/ci/docker/scripts/emscripten.sh
index e693f975f69..cf5eecbdb6c 100644
--- a/src/ci/docker/scripts/emscripten.sh
+++ b/src/ci/docker/scripts/emscripten.sh
@@ -27,38 +27,27 @@ exit 1
   set -x
 }
 
-# Download emsdk
 cd /
 curl -L https://s3.amazonaws.com/mozilla-games/emscripten/releases/emsdk-portable.tar.gz | \
     tar -xz
 
-# Download last known good emscripten from WebAssembly waterfall
-BUILD=$(curl -L https://storage.googleapis.com/wasm-llvm/builds/linux/lkgr.json | \
-    jq '.build | tonumber')
-curl -L https://storage.googleapis.com/wasm-llvm/builds/linux/$BUILD/wasm-binaries.tbz2 | \
-    hide_output tar xvkj
-
-# node 8 is required to run wasm
-cd /
-curl -L https://nodejs.org/dist/v8.0.0/node-v8.0.0-linux-x64.tar.xz | \
-    tar -xJ
-
 cd /emsdk-portable
 ./emsdk update
 hide_output ./emsdk install sdk-1.37.13-64bit
 ./emsdk activate sdk-1.37.13-64bit
 
-# Make emscripten use wasm-ready node and LLVM tools
-echo "NODE_JS='/node-v8.0.0-linux-x64/bin/node'" >> /root/.emscripten
-echo "LLVM_ROOT='/wasm-install/bin'" >> /root/.emscripten
-
-# Make emsdk usable by any user
-cp /root/.emscripten /emsdk-portable
-chmod a+rxw -R /emsdk-portable
-
 # Compile and cache libc
 source ./emsdk_env.sh
 echo "main(){}" > a.c
 HOME=/emsdk-portable/ emcc a.c
-HOME=/emsdk-portable/ emcc -s WASM=1 a.c
+HOME=/emsdk-portable/ emcc -s BINARYEN=1 a.c
 rm -f a.*
+
+# Make emsdk usable by any user
+cp /root/.emscripten /emsdk-portable
+chmod a+rxw -R /emsdk-portable
+
+# node 8 is required to run wasm
+cd /
+curl -L https://nodejs.org/dist/v8.0.0/node-v8.0.0-linux-x64.tar.xz | \
+  tar -xJ