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feat(windows): Add Windows ARM64 support (#26215)

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robobun
2026-01-22 04:22:45 -08:00
committed by GitHub
parent 1da41b7f91
commit 2a9980076d
33 changed files with 564 additions and 121 deletions
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125
scripts/build-jsc.ts
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@@ -23,7 +23,10 @@ const OS_NAME = platform().toLowerCase();
const ARCH_NAME_RAW = arch();
const IS_MAC = OS_NAME === "darwin";
const IS_LINUX = OS_NAME === "linux";
const IS_ARM64 = ARCH_NAME_RAW === "arm64" || ARCH_NAME_RAW === "aarch64";
const IS_WINDOWS = OS_NAME === "win32";
// On Windows, use PROCESSOR_ARCHITECTURE env var to get native arch (Bun may run under x64 emulation)
const NATIVE_ARCH = IS_WINDOWS ? (process.env.PROCESSOR_ARCHITECTURE || ARCH_NAME_RAW).toUpperCase() : ARCH_NAME_RAW;
const IS_ARM64 = NATIVE_ARCH === "ARM64" || NATIVE_ARCH === "AARCH64" || ARCH_NAME_RAW === "arm64";
// Paths
const ROOT_DIR = resolve(import.meta.dir, "..");
@@ -33,22 +36,54 @@ const WEBKIT_RELEASE_DIR = join(WEBKIT_BUILD_DIR, "Release");
const WEBKIT_DEBUG_DIR = join(WEBKIT_BUILD_DIR, "Debug");
const WEBKIT_RELEASE_DIR_LTO = join(WEBKIT_BUILD_DIR, "ReleaseLTO");
// Windows ICU paths - use vcpkg static build
// Auto-detect triplet: prefer arm64 if it exists, otherwise x64
const VCPKG_ARM64_PATH = join(WEBKIT_DIR, "vcpkg_installed", "arm64-windows-static");
const VCPKG_X64_PATH = join(WEBKIT_DIR, "vcpkg_installed", "x64-windows-static");
const VCPKG_ROOT = existsSync(VCPKG_ARM64_PATH) ? VCPKG_ARM64_PATH : VCPKG_X64_PATH;
const ICU_INCLUDE_DIR = join(VCPKG_ROOT, "include");
// Get ICU library paths based on build config (debug uses 'd' suffix libraries)
function getICULibraryPaths(config: BuildConfig) {
const isDebug = config === "debug";
// vcpkg static ICU libraries: release in lib/, debug in debug/lib/ with 'd' suffix
const libDir = isDebug ? join(VCPKG_ROOT, "debug", "lib") : join(VCPKG_ROOT, "lib");
const suffix = isDebug ? "d" : "";
return {
ICU_LIBRARY: libDir,
ICU_DATA_LIBRARY: join(libDir, `sicudt${suffix}.lib`),
ICU_I18N_LIBRARY: join(libDir, `sicuin${suffix}.lib`),
ICU_UC_LIBRARY: join(libDir, `sicuuc${suffix}.lib`),
};
}
// Homebrew prefix detection
const HOMEBREW_PREFIX = IS_ARM64 ? "/opt/homebrew/" : "/usr/local/";
// Compiler detection
function findExecutable(names: string[]): string | null {
for (const name of names) {
const result = spawnSync("which", [name], { encoding: "utf8" });
if (result.status === 0) {
return result.stdout.trim();
}
const path = Bun.which(name);
if (path) return path;
}
return null;
}
const CC = findExecutable(["clang-19", "clang"]) || "clang";
const CXX = findExecutable(["clang++-19", "clang++"]) || "clang++";
// Detect ccache
const CCACHE = findExecutable(["ccache"]);
const HAS_CCACHE = CCACHE !== null;
// Configure compilers with ccache if available
// On Windows, use clang-cl for MSVC compatibility
const CC_BASE = IS_WINDOWS
? findExecutable(["clang-cl.exe", "clang-cl"]) || "clang-cl"
: findExecutable(["clang-19", "clang"]) || "clang";
const CXX_BASE = IS_WINDOWS
? findExecutable(["clang-cl.exe", "clang-cl"]) || "clang-cl"
: findExecutable(["clang++-19", "clang++"]) || "clang++";
const CC = HAS_CCACHE ? CCACHE : CC_BASE;
const CXX = HAS_CCACHE ? CCACHE : CXX_BASE;
// Build directory based on config
const getBuildDir = (config: BuildConfig) => {
@@ -63,7 +98,7 @@ const getBuildDir = (config: BuildConfig) => {
};
// Common CMake flags
const getCommonFlags = () => {
const getCommonFlags = (config: BuildConfig) => {
const flags = [
"-DPORT=JSCOnly",
"-DENABLE_STATIC_JSC=ON",
@@ -74,10 +109,20 @@ const getCommonFlags = () => {
"-DENABLE_FTL_JIT=ON",
"-G",
"Ninja",
`-DCMAKE_C_COMPILER=${CC}`,
`-DCMAKE_CXX_COMPILER=${CXX}`,
];
// Configure compiler with ccache if available
if (HAS_CCACHE) {
flags.push(
`-DCMAKE_C_COMPILER_LAUNCHER=${CCACHE}`,
`-DCMAKE_CXX_COMPILER_LAUNCHER=${CCACHE}`,
`-DCMAKE_C_COMPILER=${CC_BASE}`,
`-DCMAKE_CXX_COMPILER=${CXX_BASE}`,
);
} else {
flags.push(`-DCMAKE_C_COMPILER=${CC}`, `-DCMAKE_CXX_COMPILER=${CXX}`);
}
if (IS_MAC) {
flags.push(
"-DENABLE_SINGLE_THREADED_VM_ENTRY_SCOPE=ON",
@@ -91,6 +136,27 @@ const getCommonFlags = () => {
"-DUSE_VISIBILITY_ATTRIBUTE=1",
"-DENABLE_REMOTE_INSPECTOR=ON",
);
} else if (IS_WINDOWS) {
// Find lld-link for Windows builds
const lldLink = findExecutable(["lld-link.exe", "lld-link"]) || "lld-link";
// Get ICU library paths for this build config (debug uses 'd' suffix libraries)
const icuPaths = getICULibraryPaths(config);
flags.push(
"-DENABLE_REMOTE_INSPECTOR=ON",
"-DUSE_VISIBILITY_ATTRIBUTE=1",
"-DUSE_SYSTEM_MALLOC=ON",
`-DCMAKE_LINKER=${lldLink}`,
`-DICU_ROOT=${VCPKG_ROOT}`,
`-DICU_LIBRARY=${icuPaths.ICU_LIBRARY}`,
`-DICU_INCLUDE_DIR=${ICU_INCLUDE_DIR}`,
// Explicitly set ICU library paths to use vcpkg static libs (debug has 'd' suffix)
`-DICU_DATA_LIBRARY_RELEASE=${icuPaths.ICU_DATA_LIBRARY}`,
`-DICU_I18N_LIBRARY_RELEASE=${icuPaths.ICU_I18N_LIBRARY}`,
`-DICU_UC_LIBRARY_RELEASE=${icuPaths.ICU_UC_LIBRARY}`,
"-DCMAKE_C_FLAGS=/DU_STATIC_IMPLEMENTATION",
"-DCMAKE_CXX_FLAGS=/DU_STATIC_IMPLEMENTATION /clang:-fno-c++-static-destructors",
);
}
return flags;
@@ -98,7 +164,7 @@ const getCommonFlags = () => {
// Build-specific CMake flags
const getBuildFlags = (config: BuildConfig) => {
const flags = [...getCommonFlags()];
const flags = [...getCommonFlags(config)];
switch (config) {
case "debug":
@@ -110,20 +176,37 @@ const getBuildFlags = (config: BuildConfig) => {
"-DUSE_VISIBILITY_ATTRIBUTE=1",
);
if (IS_MAC) {
// Enable address sanitizer by default on Mac debug builds
if (IS_MAC || IS_LINUX) {
// Enable address sanitizer by default on Mac/Linux debug builds
flags.push("-DENABLE_SANITIZERS=address");
// To disable asan, comment the line above and uncomment:
// flags.push("-DENABLE_MALLOC_HEAP_BREAKDOWN=ON");
}
if (IS_WINDOWS) {
flags.push("-DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreadedDebug");
}
break;
case "lto":
flags.push("-DCMAKE_BUILD_TYPE=Release", "-DCMAKE_C_FLAGS=-flto=full", "-DCMAKE_CXX_FLAGS=-flto=full");
flags.push("-DCMAKE_BUILD_TYPE=Release");
if (IS_WINDOWS) {
// On Windows, append LTO flags to existing Windows-specific flags
flags.push(
"-DCMAKE_C_FLAGS=/DU_STATIC_IMPLEMENTATION -flto=full",
"-DCMAKE_CXX_FLAGS=/DU_STATIC_IMPLEMENTATION /clang:-fno-c++-static-destructors -flto=full",
"-DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreaded",
);
} else {
flags.push("-DCMAKE_C_FLAGS=-flto=full", "-DCMAKE_CXX_FLAGS=-flto=full");
}
break;
default: // release
flags.push("-DCMAKE_BUILD_TYPE=RelWithDebInfo");
if (IS_WINDOWS) {
flags.push("-DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreaded");
}
break;
}
@@ -134,17 +217,6 @@ const getBuildFlags = (config: BuildConfig) => {
const getBuildEnv = () => {
const env = { ...process.env };
const cflags = ["-ffat-lto-objects"];
const cxxflags = ["-ffat-lto-objects"];
if (IS_LINUX && buildConfig !== "lto") {
cflags.push("-Wl,--whole-archive");
cxxflags.push("-Wl,--whole-archive", "-DUSE_BUN_JSC_ADDITIONS=ON", "-DUSE_BUN_EVENT_LOOP=ON");
}
env.CFLAGS = (env.CFLAGS || "") + " " + cflags.join(" ");
env.CXXFLAGS = (env.CXXFLAGS || "") + " " + cxxflags.join(" ");
if (IS_MAC) {
env.ICU_INCLUDE_DIRS = `${HOMEBREW_PREFIX}opt/icu4c/include`;
}
@@ -179,6 +251,9 @@ function buildJSC() {
console.log(`Building JSC with configuration: ${buildConfig}`);
console.log(`Build directory: ${buildDir}`);
if (HAS_CCACHE) {
console.log(`Using ccache for faster builds: ${CCACHE}`);
}
// Create build directories
if (!existsSync(buildDir)) {