Add wasm-opt wrapper

Author: IsabelParedes

recipes/recipes/emscripten_emscripten-wasm32/build_compiler_package.sh

@@ -48,3 +48,9 @@ for file in $PREFIX/opt/emsdk/upstream/emscripten/*; do
     ln -sf $file $PREFIX/bin/
   fi
 done
+
+# Add wasm-opt wrapper. See NOTE in patches/wasm-opt-wrapper.
+EMSDK_DIR=$PREFIX/opt/emsdk/upstream
+mv $EMSDK_DIR/bin/wasm-opt $EMSDK_DIR/bin/wasm-opt-original
+cp $RECIPE_DIR/patches/wasm-opt-wrapper $EMSDK_DIR/bin/wasm-opt
+chmod +x $EMSDK_DIR/bin/wasm-opt

recipes/recipes/emscripten_emscripten-wasm32/patches/wasm-opt-wrapper

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+# NOTE:
+# This is only required when using an external LLVM which is newer than the LLVM
+# version used by Emscripten; that is the case for packages using LLVM + Flang
+# such as Octave.
+# This wrapper should likely be removed once this package is upgraded to >3.1.73
+# The removal of these two flags should have no effect in any other packages
+# since these options are simply not supported (yet).
+
+filtered_args=()
+for arg in "$@"; do
+    if [[ "$arg" != "--enable-bulk-memory-opt" && "$arg" != "--enable-call-indirect-overlong" ]]; then
+        filtered_args+=("$arg")
+    fi
+done
+
+$BUILD_PREFIX/opt/emsdk/upstream/bin/wasm-opt-original "${filtered_args[@]}"

recipes/recipes/emscripten_emscripten-wasm32/recipe.yaml

@@ -3,7 +3,7 @@ context:
   version: 3.1.73
 
 build:
-  number: 10
+  number: 11
 
 outputs:
   - package: