Refactor emscripten/emsdk version to a single file

script/build-wasm

@@ -33,6 +33,7 @@ web_dir=lib/binding_web
 emscripten_flags="-O3"
 minify_js=1
 force_docker=0
+emscripen_version=$(cat "$(dirname "$0")"/../emscripten-version)
 
 while [[ $# > 0 ]]; do
   case "$1" in
@@ -63,11 +64,11 @@ emcc=
 if which emcc > /dev/null && [[ "$force_docker" == "0" ]]; then
   emcc=emcc
 elif which docker > /dev/null; then
-  emcc="docker run           \
-    --rm                     \
-    -v $(pwd):/src:Z         \
-    -u $(id -u)              \
-    emscripten/emsdk:2.0.11  \
+  emcc="docker run                       \
+    --rm                                 \
+    -v $(pwd):/src:Z                     \
+    -u $(id -u)                          \
+    emscripten/emsdk:$emscripen_version  \
     emcc"
 else
   echo 'You must have either `docker` or `emcc` on your PATH to run this script'

script/fetch-emscripten

@@ -2,7 +2,7 @@
 
 set -e
 
-EMSCRIPTEN_VERSION=2.0.11
+EMSCRIPTEN_VERSION=$(cat "$(dirname "$0")/../emscripten-version")
 
 mkdir -p target
 EMSDK_DIR="./target/emsdk"