diff --git a/.github/workflows/deploy-pages.yml b/.github/workflows/deploy-pages.yml
index 31174ca2..958a1b41 100644
--- a/.github/workflows/deploy-pages.yml
+++ b/.github/workflows/deploy-pages.yml
@@ -165,6 +165,7 @@ jobs:
         pushd build
         export CMAKE_PREFIX_PATH=${{ env.PREFIX }} 
         export CMAKE_SYSTEM_PREFIX_PATH=${{ env.PREFIX }} 
+        export SYSROOT_PATH=$HOME/emsdk/upstream/emscripten/cache/sysroot
         emcmake cmake \
           -DCMAKE_BUILD_TYPE=${{ env.BUILD_TYPE }}          \
           -DCMAKE_PREFIX_PATH=${{ env.PREFIX }}             \
@@ -172,6 +173,7 @@ jobs:
           -DXEUS_CPP_EMSCRIPTEN_WASM_BUILD=ON               \
           -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ON            \
           -DCppInterOp_DIR="${{ env.CPPINTEROP_BUILD_DIR }}/lib/cmake/CppInterOp"  \
+          -DSYSROOT_PATH=$SYSROOT_PATH                      \
           ..
         emmake make -j ${{ env.ncpus }} install
 
@@ -183,6 +185,8 @@ jobs:
           micromamba activate xeus-lite-host
           python -m pip install jupyterlite-xeus
           jupyter lite build --XeusAddon.prefix=${{ env.PREFIX }} --output-dir dist
+          cp xcpp.data dist/extensions/@jupyterlite/xeus/static
+          cp $PREFIX/lib/libclangCppInterOp.so dist/extensions/@jupyterlite/xeus/static
 
     - name: Upload artifact
       uses: actions/upload-pages-artifact@v3
diff --git a/.github/workflows/emscripten.yml b/.github/workflows/emscripten.yml
index ae7e3ab4..5b0ebf16 100644
--- a/.github/workflows/emscripten.yml
+++ b/.github/workflows/emscripten.yml
@@ -605,6 +605,7 @@ jobs:
         pushd build
         export CMAKE_PREFIX_PATH=${{ env.PREFIX }} 
         export CMAKE_SYSTEM_PREFIX_PATH=${{ env.PREFIX }} 
+        export SYSROOT_PATH=$HOME/emsdk/upstream/emscripten/cache/sysroot
         emcmake cmake \
           -DCMAKE_BUILD_TYPE=${{ env.BUILD_TYPE }}          \
           -DCMAKE_PREFIX_PATH=${{ env.PREFIX }}             \
@@ -612,5 +613,6 @@ jobs:
           -DXEUS_CPP_EMSCRIPTEN_WASM_BUILD=ON               \
           -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ON            \
           -DCppInterOp_DIR="${{ env.CPPINTEROP_BUILD_DIR }}/lib/cmake/CppInterOp"  \
+          -DSYSROOT_PATH=$SYSROOT_PATH                      \
           ..
         emmake make -j ${{ env.ncpus }}
diff --git a/patches/llvm/emscripten-clang19-2-shift-temporary-files-to-tmp-dir.patch b/patches/llvm/emscripten-clang19-2-shift-temporary-files-to-tmp-dir.patch
new file mode 100644
index 00000000..32ac45c1
--- /dev/null
+++ b/patches/llvm/emscripten-clang19-2-shift-temporary-files-to-tmp-dir.patch
@@ -0,0 +1,15 @@
+diff --git a/clang/lib/Interpreter/Wasm.cpp b/clang/lib/Interpreter/Wasm.cpp
+index aa10b160ccf8..184867e2b55f 100644
+--- a/clang/lib/Interpreter/Wasm.cpp
++++ b/clang/lib/Interpreter/Wasm.cpp
+@@ -76,8 +76,8 @@ llvm::Error WasmIncrementalExecutor::addModule(PartialTranslationUnit &PTU) {
+   llvm::TargetMachine *TargetMachine = Target->createTargetMachine(
+       PTU.TheModule->getTargetTriple(), "", "", TO, llvm::Reloc::Model::PIC_);
+   PTU.TheModule->setDataLayout(TargetMachine->createDataLayout());
+-  std::string ObjectFileName = PTU.TheModule->getName().str() + ".o";
+-  std::string BinaryFileName = PTU.TheModule->getName().str() + ".wasm";
++  std::string ObjectFileName = "/tmp/" + PTU.TheModule->getName().str() + ".o";
++  std::string BinaryFileName = "/tmp/" + PTU.TheModule->getName().str() + ".wasm";
+ 
+   std::error_code Error;
+   llvm::raw_fd_ostream ObjectFileOutput(llvm::StringRef(ObjectFileName), Error);