Initial commit

wasm-llvm.nix

@@ -0,0 +1,98 @@
+{ pkgs }:
+with pkgs;
+stdenv.mkDerivation {
+  name = "wasm-llvm";
+  version = "17.0.6";
+  src = fetchzip {
+    url = "https://github.com/llvm/llvm-project/archive/refs/tags/llvmorg-17.0.6.tar.gz";
+    hash = "sha256-8MEDLLhocshmxoEBRSKlJ/GzJ8nfuzQ8qn0X/vLA+ag=";
+  };
+
+  nativeBuildInputs = [
+    cmake
+    ninja
+    python3
+  ];
+
+  phases = [
+    "configurePhase"
+    "installPhase"
+  ];
+
+  outputs = [
+    "out"
+    "dev"
+  ];
+
+  configurePhase = ''
+    cmake -G Ninja \
+    -DCMAKE_INSTALL_PREFIX=$out \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DLLVM_ENABLE_ZLIB=OFF \
+    -DLLVM_ENABLE_TERMINFO=OFF \
+    -DLLVM_ENABLE_ZSTD=OFF \
+    -DLLVM_STATIC_LINK_CXX_STDLIB=ON \
+    -DLLVM_HAVE_LIBXAR=OFF \
+    -DLLVM_INCLUDE_TESTS=OFF \
+    -DLLVM_INCLUDE_UTILS=OFF \
+    -DLLVM_INCLUDE_BENCHMARKS=OFF \
+    -DLLVM_INCLUDE_EXAMPLES=OFF \
+    -DLLVM_TARGETS_TO_BUILD=WebAssembly \
+    -DLLVM_DEFAULT_TARGET_TRIPLE=wasm32-wasi \
+    -DLLVM_ENABLE_PROJECTS="lld;clang;clang-tools-extra" \
+    -DLLVM_INSTALL_BINUTILS_SYMLINKS=TRUE \
+    -DLLVM_ENABLE_LIBXML2=OFF \
+    $src/llvm
+  '';
+
+  installPhase = ''
+        mkdir -p $dev/cmake
+
+        cat > $dev/cmake/toolchain.cmake <<-CMAKE
+        set(CMAKE_SYSTEM_NAME WASI)
+        set(CMAKE_SYSTEM_VERSION 1)
+        set(CMAKE_SYSTEM_PROCESSOR wasm32)
+        set(triple wasm32-wasi)
+
+        set(CMAKE_C_COMPILER $out/bin/clang)
+        set(CMAKE_CXX_COMPILER $out/bin/clang++)
+        set(CMAKE_ASM_COMPILER $out/bin/clang)
+        set(CMAKE_AR $out/bin/llvm-ar)
+        set(CMAKE_RANLIB $out/bin/llvm-ranlib)
+
+        set(CMAKE_C_COMPILER_TARGET wasm32-wasi)
+        set(CMAKE_CXX_COMPILER_TARGET wasm32-wasi)
+        set(CMAKE_ASM_COMPILER_TARGET wasm32-wasi)
+
+        set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+        set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+        set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+        set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+    CMAKE
+
+        mkdir -p $dev/cmake/Platform
+        echo "set(WASI 1)" > $dev/cmake/Platform/WASI.cmake
+
+        ninja -v \
+        install-clang \
+        install-clang-format \
+        install-clang-tidy \
+        install-clang-apply-replacements \
+        install-lld \
+        install-llvm-mc \
+        install-llvm-ranlib \
+        install-llvm-strip \
+        install-llvm-dwarfdump \
+        install-clang-resource-headers \
+        install-ar \
+        install-ranlib \
+        install-strip \
+        install-nm \
+        install-size \
+        install-strings \
+        install-objdump \
+        install-objcopy \
+        install-c++filt \
+        install-llvm-config
+  '';
+}