WIP: LLVM release workflows

.github/workflows/release-llvm.yml

@@ -0,0 +1,148 @@
+name: Release LLVM
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: "version to use in tag name; without the leading 'v', or prefix"
+        required: false
+  push:
+    branches: ["yuri/release-llvm"]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build-macos-gnu:
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: install macos deps
+        run: |
+          brew install ninja
+
+      - name: versions
+        run: |
+          rustup show
+          cargo --version
+          cmake --version
+          echo "bash:" && bash --version
+          echo "ninja:" && ninja --version
+          echo "clang:" && clang --version
+
+      - name: Build LLVM
+        run: |
+          make install-llvm
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: llvm-macos
+          path: target-llvm/gnu/target-final
+          if-no-files-found: error
+          compression-level: 9
+
+  build-linux-all:
+    runs-on: parity-large
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: install linux deps
+        run: |
+          sudo apt-get update && sudo apt-get install -y cmake ninja-build curl git libssl-dev pkg-config clang lld
+
+      - name: Install Rust stable toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          components: rust-src
+          target: wasm32-unknown-emscripten
+
+      - name: versions
+        run: |
+          rustup show
+          cargo --version
+          cmake --version
+          echo "bash:" && bash --version
+          echo "ninja:" && ninja --version
+          echo "clang:" && clang --version
+
+      - name: Build host LLVM
+        run: |
+          make install-llvm
+
+      - name: Build emscripten LLVM
+        run: |
+          revive-llvm --target-env emscripten clone
+          source emsdk/emsdk_env.sh
+          revive-llvm --target-env emscripten build --llvm-projects lld
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: llvm-linux
+          path: target-llvm/gnu/target-final
+          if-no-files-found: error
+          compression-level: 9
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: llvm-emscripten
+          path: target-llvm/emscripten/target-final
+          if-no-files-found: error
+          compression-level: 9
+
+  build-windows-gnu:
+    #    runs-on: windows-latest
+    runs-on: lorwyn
+    env:
+      MSYSTEM: "MINGW"
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: install win deps
+        run: |
+          choco install ninja
+
+      - name: Setup msys2
+        id: msys2
+        uses: msys2/setup-msys2@v2
+        with:
+          path-type: inherit
+          install: >-
+            base-devel
+            mingw-w64-x86_64-clang
+            mingw-w64-x86_64-lld
+            mingw-w64-x86_64-rust
+            mingw-w64-x86_64-cmake
+            mingw-w64-x86_64-gcc
+            mingw-w64-x86_64-gcc-libs
+            mingw-w64-x86_64-python
+            mingw-w64-clang-x86_64-riscv64-unknown-elf-toolchain
+
+      - name: Prepare env
+        shell: "msys2 {0}"
+        run: |
+          echo "/c/Users/runneradmin/.cargo/bin" >> "${GITHUB_PATH}"
+
+      - name: versions
+        shell: "msys2 {0}"
+        run: |
+          rustup show
+          cargo --version
+          cmake --version
+          ninja --version
+
+      - name: Build LLVM
+        shell: "msys2 {0}"
+        env:
+          VERBOSE: 1
+          LIBSTDCPP_SOURCE_PATH: "${{ steps.msys2.outputs.msys2-location }}/mingw64/lib/libstdc++.a"
+        run: |
+          make install-llvm
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: llvm-windows
+          path: target-llvm/gnu/target-final
+          if-no-files-found: error
+          compression-level: 9

crates/llvm-builder/src/builtins.rs

@@ -42,26 +42,32 @@ fn cmake_dynamic_args(
         crate::LLVMPath::llvm_target_final()?
     };
 
+    let bin_suffix = if cfg!(target_os = "windows") {
+        ".exe"
+    } else {
+        ""
+    };
+
     let mut clang_path = llvm_target_host.to_path_buf();
-    clang_path.push("bin/clang");
+    clang_path.push(format!("bin/clang{}", bin_suffix));
 
     let mut clangxx_path = llvm_target_host.to_path_buf();
-    clangxx_path.push("bin/clang++");
+    clangxx_path.push(format!("bin/clang++{}", bin_suffix));
 
     let mut llvm_config_path = llvm_target_host.to_path_buf();
-    llvm_config_path.push("bin/llvm-config");
+    llvm_config_path.push(format!("bin/llvm-config++{}", bin_suffix));
 
     let mut ar_path = llvm_target_host.to_path_buf();
-    ar_path.push("bin/llvm-ar");
+    ar_path.push(format!("bin/llvm-ar{}", bin_suffix));
 
     let mut nm_path = llvm_target_host.to_path_buf();
-    nm_path.push("bin/llvm-nm");
+    nm_path.push(format!("bin/llvm-nm{}", bin_suffix));
 
     let mut ranlib_path = llvm_target_host.to_path_buf();
-    ranlib_path.push("bin/llvm-ranlib");
+    ranlib_path.push(format!("bin/llvm-ranlib{}", bin_suffix));
 
     let mut linker_path = llvm_target_host.to_path_buf();
-    linker_path.push("bin/ld.lld");
+    linker_path.push(format!("bin/ld.lld{}", bin_suffix));
 
     Ok([
         format!(