Make use of XEUS_CPP_RESOURCE_DIR when doing Emscripten build of xeus-cpp (#593)

Author: mcbarton

.github/workflows/deploy-pages.yml

@@ -221,6 +221,7 @@ jobs:
           -DCMAKE_INSTALL_PREFIX=${{ env.PREFIX }}          \
           -DXEUS_CPP_EMSCRIPTEN_WASM_BUILD=ON               \
           -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ON            \
+          -DXEUS_CPP_RESOURCE_DIR=${{ env.LLVM_BUILD_DIR }}/lib/clang/${{ matrix.clang-runtime }} \
           -DSYSROOT_PATH=${{ env.SYSROOT_PATH }}                     \
           ..
         emmake make -j ${{ env.ncpus }} install

.github/workflows/emscripten.yml

@@ -817,6 +817,7 @@ jobs:
           -DCMAKE_INSTALL_PREFIX=${{ env.PREFIX }}          \
           -DXEUS_CPP_EMSCRIPTEN_WASM_BUILD=ON               \
           -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ON            \
+          -DXEUS_CPP_RESOURCE_DIR=${{ env.LLVM_BUILD_DIR }}/lib/clang/${{ matrix.clang-runtime }} \
           -DSYSROOT_PATH=${{ env.SYSROOT_PATH }}                     \
           ..
         emmake make -j ${{ env.ncpus }} install

Emscripten-build-instructions.md

@@ -291,7 +291,8 @@ emmake make -j $(nproc --all) install
 ## Xeus-cpp-lite Wasm Build Instructions
 
 A project which makes use of the wasm build of CppInterOp is xeus-cpp. xeus-cpp is a C++ Jupyter kernel. Assuming you are in  
-the CppInterOp build folder, you can build the wasm version of xeus-cpp by executing  
+the CppInterOp build folder, you can build the wasm version of xeus-cpp by executing (replace $LLVM_VERSION with the version
+of llvm you are building against)
 
 ```bash
 cd ../..
@@ -305,6 +306,7 @@ emcmake cmake \
           -DCMAKE_INSTALL_PREFIX=$PREFIX                                 \
           -DXEUS_CPP_EMSCRIPTEN_WASM_BUILD=ON                            \
           -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ON                         \
+          -DXEUS_CPP_RESOURCE_DIR=$LLVM_BUILD_DIR/lib/clang/$LLVM_VERSION \
           -DSYSROOT_PATH=$SYSROOT_PATH                                   \
           ..
  emmake make -j $(nproc --all) install

docs/Emscripten-build-instructions.rst

@@ -315,6 +315,7 @@ Assuming it passes all test you can install by executing the following.
 A project which makes use of the wasm build of CppInterOp is xeus-cpp.
 xeus-cpp is a C++ Jupyter kernel. Assuming you are in the CppInterOp
 build folder, you can build the wasm version of xeus-cpp by executing
+(replace $LLVM_VERSION with the version of llvm you are building against)
 
 .. code:: bash
 
@@ -329,6 +330,7 @@ build folder, you can build the wasm version of xeus-cpp by executing
            -DCMAKE_INSTALL_PREFIX=$PREFIX                                 \
            -DXEUS_CPP_EMSCRIPTEN_WASM_BUILD=ON                            \
            -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ON                         \
+	   -DXEUS_CPP_RESOURCE_DIR=$LLVM_BUILD_DIR/lib/clang/$LLVM_VERSION \
            -DSYSROOT_PATH=$SYSROOT_PATH                                   \
            ..
    emmake make -j $(nproc --all) install