Update llvm to 20.1.4

Author: anutosh491

recipes/recipes_emscripten/llvm/build.sh

@@ -25,16 +25,12 @@ emcmake cmake ${CMAKE_ARGS} -S ../llvm -B .         \
     -DLLVM_ENABLE_THREADS=OFF                       \
     -DLLVM_ENABLE_ZSTD=OFF                          \
     -DLLVM_ENABLE_LIBXML2=OFF                       \
+    -DLLVM_BUILD_TOOLS=OFF                          \
     -DCLANG_ENABLE_STATIC_ANALYZER=OFF              \
     -DCLANG_ENABLE_ARCMT=OFF                        \
     -DCLANG_ENABLE_BOOTSTRAP=OFF                    \
+    -DCLANG_BUILD_TOOLS=OFF                         \
     -DCMAKE_CXX_FLAGS="-Dwait4=__syscall_wait4 -fexceptions"
 
-# Build step
-emmake make -j4
-
-# Install step
-emmake make install
-
-# Copy all files with ".wasm" extension to $PREFIX/bin
-cp $SRC_DIR/build/bin/*.wasm $PREFIX/bin
+# Build and Install step
+emmake make clangInterpreter lldWasm -j16 install