added a firefox matmul backend

build.sh

@@ -1,21 +1,24 @@
 #!/bin/bash
 # Copyright (c) Microsoft Corporation. All rights reserved.
 # Licensed under the MIT License.
+set -ex
 
 # Get directory this script is in
-DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 OS=$(uname -s)
 
 if [ "$OS" = "Darwin" ]; then
-    DIR_OS="MacOS"
+  DIR_OS="MacOS"
 else
-    DIR_OS="Linux"
+  DIR_OS="Linux"
 fi
 
 if [[ "$*" == *"--ios"* ]]; then
-    DIR_OS="iOS"
+  DIR_OS="iOS"
 elif [[ "$*" == *"--android"* ]]; then
-    DIR_OS="Android"
+  DIR_OS="Android"
 fi
 
-python3 $DIR/tools/ci_build/build.py --build_dir $DIR/build/$DIR_OS "$@"
+PYTHON="${PYTHON:-python3}"
+
+$PYTHON $DIR/tools/ci_build/build.py --build_dir $DIR/build/$DIR_OS "$@"

cmake/onnxruntime_webassembly.cmake

@@ -382,6 +382,7 @@ jsepDownload:_pp_")
       "SHELL:-s ASYNCIFY_STACK_SIZE=65536"
       "SHELL:-s ASYNCIFY_EXPORTS=['OrtRun']"
       "SHELL:-s ASYNCIFY_IMPORTS=['Module.jsepCopy','Module.jsepCopyAsync','jsepDownload']"
+      "SHELL:-s ERROR_ON_UNDEFINED_SYMBOLS=0"
     )
     set_target_properties(onnxruntime_webassembly PROPERTIES LINK_DEPENDS ${ONNXRUNTIME_ROOT}/wasm/pre-jsep.js)
   endif()