Apply some PR comments

Author: mcbarton

.github/workflows/emscripten.yml

@@ -355,8 +355,8 @@ jobs:
           }
           elseif ( "${{ matrix.clang-runtime }}" -imatch "21" )
           {
-            git apply -v Windows-emscripten-clang21-1-CrossCompile.patch
-            git apply -v emscripten-clang21-2-shift-temporary-files-to-tmp-dir.patch
+            git apply -v emscripten-clang21-1-shift-temporary-files-to-tmp-dir.patch
+            git apply -v emscripten-clang21-2-enable_exception_handling.patch
           }
           cd build
           echo "Apply clang${{ matrix.clang-runtime }}-*.patch patches:"

Emscripten-build-instructions.md

@@ -42,11 +42,11 @@ $env:PWD_DIR= $PWD.Path
 $env:SYSROOT_PATH="$env:EMSDK/upstream/emscripten/cache/sysroot"
 ```
 
-Now clone the 20.x release of the LLVM project repository and CppInterOp (the building of the emscripten version of llvm can be
+Now clone the 21.x release of the LLVM project repository and CppInterOp (the building of the emscripten version of llvm can be
 avoided by executing micromamba install llvm -c <https://repo.mamba.pm/emscripten-forge> and setting the LLVM_BUILD_DIR/$env:LLVM_BUILD_DIR appropriately)
 
 ```bash
-git clone --depth=1 --branch release/20.x https://github.com/llvm/llvm-project.git
+git clone --depth=1 --branch release/21.x https://github.com/llvm/llvm-project.git
 git clone --depth=1 https://github.com/compiler-research/CppInterOp.git
 ```
 
@@ -55,16 +55,16 @@ executing
 
 ```bash
 cd ./llvm-project/
-git apply -v ../CppInterOp/patches/llvm/emscripten-clang20-*.patch
+git apply -v ../CppInterOp/patches/llvm/emscripten-clang21-*.patch
 ```
 
 On Windows execute the following
 
 ```powershell
 cd .\llvm-project\
-cp -r ..\patches\llvm\emscripten-clang20*
-git apply -v emscripten-clang20-2-shift-temporary-files-to-tmp-dir.patch
-git apply -v emscripten-clang20-3-enable_exception_handling.patch
+cp -r ..\patches\llvm\emscripten-clang21*
+git apply -v emscripten-clang21-1-shift-temporary-files-to-tmp-dir.patch
+git apply -v emscripten-clang21-2-enable_exception_handling.patch
 ```
 
 We are now in a position to build an emscripten build of llvm by executing the following on Linux
@@ -343,7 +343,7 @@ of llvm you are building against)
 ```bash
 cd ../..
 git clone --depth=1 https://github.com/compiler-research/xeus-cpp.git
-export LLVM_VERSION=20
+export LLVM_VERSION=21
 cd ./xeus-cpp
 mkdir build
 cd build

README.md

@@ -104,10 +104,10 @@ git clone --depth=1 https://github.com/compiler-research/cppyy-backend.git
 
 #### Setup Clang-REPL
 
-Clone the 20.x release of the LLVM project repository.
+Clone the 1.x release of the LLVM project repository.
 
 ```bash
-git clone --depth=1 --branch release/20.x https://github.com/llvm/llvm-project.git
+git clone --depth=1 --branch release/21.x https://github.com/llvm/llvm-project.git
 cd llvm-project
 ```
 
@@ -406,10 +406,10 @@ git clone --depth=1 https://github.com/compiler-research/cppyy-backend.git
 
 #### Setup Clang-REPL
 
-Clone the 20.x release of the LLVM project repository.
+Clone the 21.x release of the LLVM project repository.
 
 ```bash
-git clone --depth=1 --branch release/20.x https://github.com/llvm/llvm-project.git
+git clone --depth=1 --branch release/21.x https://github.com/llvm/llvm-project.git
 cd llvm-project
 ```