Remove cross compile patch for Unix systems

Author: mcbarton

.github/workflows/emscripten.yml

@@ -218,6 +218,12 @@ jobs:
         fi
         cd llvm-project
         # Build
+        mkdir native_build
+        cd native_build
+        cmake -DLLVM_ENABLE_PROJECTS=clang -DLLVM_TARGETS_TO_BUILD=host -DCMAKE_BUILD_TYPE=Release ../llvm/
+        cmake --build . --target llvm-tblgen clang-tblgen --parallel $(nproc --all)
+        export NATIVE_DIR=$PWD/bin/
+        cd ..
         mkdir build
         if [[ "${cling_on}" == "ON" ]]; then
           cd build
@@ -243,6 +249,7 @@ jobs:
                         -DLLVM_BUILD_TOOLS=OFF                          \
                         -DLLVM_ENABLE_LIBPFM=OFF                        \
                         -DCLANG_BUILD_TOOLS=OFF                         \
+                        -DLLVM_NATIVE_TOOL_DIR=$NATIVE_DIR 		\
                          ../llvm
           emmake ninja clang cling lld gtest_main
         else
@@ -273,10 +280,10 @@ jobs:
                         -DLLVM_ENABLE_LIBPFM=OFF                        \
                         -DCLANG_BUILD_TOOLS=OFF                         \
                         -G Ninja                                         \
+                        -DLLVM_NATIVE_TOOL_DIR=$NATIVE_DIR 		\
                         ../llvm
           emmake ninja libclang clangInterpreter clangStaticAnalyzerCore lldWasm
         fi
-        rm -rf ./NATIVE/
         cd ../
         rm -rf $(find . -maxdepth 1 ! -name "build" ! -name "llvm" ! -name "clang" ! -name ".")
         if [[ "${cling_on}" == "ON" ]]; then

Emscripten-build-instructions.md

@@ -71,6 +71,12 @@ git apply -v emscripten-clang20-2-shift-temporary-files-to-tmp-dir.patch
 We are now in a position to build an emscripten build of llvm by executing the following on Linux
 and osx
 ```bash
+mkdir native_build
+cd native_build
+cmake -DLLVM_ENABLE_PROJECTS=clang -DLLVM_TARGETS_TO_BUILD=host -DCMAKE_BUILD_TYPE=Release ../llvm/
+cmake --build . --target llvm-tblgen clang-tblgen --parallel $(nproc --all)
+export NATIVE_DIR=$PWD/bin/
+cd ..
 mkdir build
 cd build
 emcmake cmake -DCMAKE_BUILD_TYPE=Release \
@@ -92,6 +98,7 @@ emcmake cmake -DCMAKE_BUILD_TYPE=Release \
                         -DLLVM_BUILD_TOOLS=OFF                          \
                         -DLLVM_ENABLE_LIBPFM=OFF                        \
                         -DCLANG_BUILD_TOOLS=OFF                         \
+                        -DLLVM_NATIVE_TOOL_DIR=$NATIVE_DIR              \
                         ../llvm
 emmake make libclang -j $(nproc --all)
 emmake make clangInterpreter clangStaticAnalyzerCore -j $(nproc --all)

docs/Emscripten-build-instructions.rst

@@ -91,6 +91,12 @@ and osx
 
 .. code:: bash
 
+   mkdir native_build
+   cd native_build
+   cmake -DLLVM_ENABLE_PROJECTS=clang -DLLVM_TARGETS_TO_BUILD=host -DCMAKE_BUILD_TYPE=Release ../llvm/
+   cmake --build . --target llvm-tblgen clang-tblgen --parallel $(nproc --all)
+   export NATIVE_DIR=$PWD/bin/
+   cd ..
    mkdir build
    cd build
    emcmake cmake -DCMAKE_BUILD_TYPE=Release \
@@ -112,6 +118,7 @@ and osx
                  -DLLVM_BUILD_TOOLS=OFF                          \
                  -DLLVM_ENABLE_LIBPFM=OFF                        \
                  -DCLANG_BUILD_TOOLS=OFF                         \
+                 -DLLVM_NATIVE_TOOL_DIR=$NATIVE_DIR 		\
                  ../llvm
    emmake make libclang -j $(nproc --all)
    emmake make clangInterpreter clangStaticAnalyzerCore -j $(nproc --all)