xtask: add llvm/compiler-rt/libcxx/libcxxabi build

.gitignore

@@ -1,2 +1,3 @@
 /target
 /toolchain
+/xtask.user.toml

toolchain-c/cmake/toolchain-aarch64.cmake

@@ -0,0 +1,22 @@
+if (NOT DEFINED ENV{CROSS_TOOLCHAIN_PREFIX})
+    message(FATAL_ERROR "CROSS_TOOLCHAIN_PREFIX=... must be specified.")
+endif()
+
+set(CROSS_TOOLCHAIN_PREFIX "$ENV{CROSS_TOOLCHAIN_PREFIX}")
+
+set(CMAKE_SYSTEM_NAME yggdrasil)
+set(CMAKE_C_COMPILER "${CROSS_TOOLCHAIN_PREFIX}/bin/clang")
+set(CMAKE_CXX_COMPILER "${CROSS_TOOLCHAIN_PREFIX}/bin/clang++")
+
+# Specify the target triple for your custom OS.
+set(CMAKE_C_COMPILER_TARGET "aarch64-unknown-yggdrasil")
+set(CMAKE_ASM_COMPILER_TARGET "aarch64-unknown-yggdrasil")
+
+# Disable default system libraries
+# set(CMAKE_EXE_LINKER_FLAGS "-nostdlib")
+# set(CMAKE_SHARED_LINKER_FLAGS "-v")
+
+set(CMAKE_C_FLAGS "--target=aarch64-unknown-yggdrasil -fPIC")
+set(CMAKE_CXX_FLAGS "--target=aarch64-unknown-yggdrasil -nostdlib++ -fPIC -D_LIBCPP_HAS_NO_MONOTONIC_CLOCK=1 -D_LIBCPP_HAS_NO_TREE_BARRIER")
+
+# Specify any additional include paths or linker flags as needed

toolchain-c/cmake/toolchain-i686.cmake

@@ -0,0 +1,22 @@
+if (NOT DEFINED ENV{CROSS_TOOLCHAIN_PREFIX})
+    message(FATAL_ERROR "CROSS_TOOLCHAIN_PREFIX=... must be specified.")
+endif()
+
+set(CROSS_TOOLCHAIN_PREFIX "$ENV{CROSS_TOOLCHAIN_PREFIX}")
+
+set(CMAKE_SYSTEM_NAME yggdrasil)
+set(CMAKE_C_COMPILER "${CROSS_TOOLCHAIN_PREFIX}/bin/clang")
+set(CMAKE_CXX_COMPILER "${CROSS_TOOLCHAIN_PREFIX}/bin/clang++")
+
+# Specify the target triple for your custom OS.
+set(CMAKE_C_COMPILER_TARGET "i686-unknown-yggdrasil")
+set(CMAKE_ASM_COMPILER_TARGET "i686-unknown-yggdrasil")
+
+# Disable default system libraries
+# set(CMAKE_EXE_LINKER_FLAGS "-nostdlib")
+# set(CMAKE_SHARED_LINKER_FLAGS "-v")
+
+set(CMAKE_C_FLAGS "--target=i686-unknown-yggdrasil -fPIC -m32")
+set(CMAKE_CXX_FLAGS "--target=i686-unknown-yggdrasil -m32 -nostdlib++ -fPIC -D_LIBCPP_HAS_NO_MONOTONIC_CLOCK=1 -D_LIBCPP_HAS_NO_TREE_BARRIER")
+
+# Specify any additional include paths or linker flags as needed

toolchain-c/cmake/toolchain-x86_64.cmake

@@ -0,0 +1,20 @@
+if (NOT DEFINED ENV{CROSS_TOOLCHAIN_PREFIX})
+    message(FATAL_ERROR "CROSS_TOOLCHAIN_PREFIX=... must be specified.")
+endif()
+
+set(CROSS_TOOLCHAIN_PREFIX "$ENV{CROSS_TOOLCHAIN_PREFIX}")
+
+set(CMAKE_SYSTEM_NAME yggdrasil)
+set(CMAKE_C_COMPILER "${CROSS_TOOLCHAIN_PREFIX}/bin/clang")
+set(CMAKE_CXX_COMPILER "${CROSS_TOOLCHAIN_PREFIX}/bin/clang++")
+
+# Specify the target triple for your custom OS.
+set(CMAKE_C_COMPILER_TARGET "x86_64-unknown-yggdrasil")
+set(CMAKE_ASM_COMPILER_TARGET "x86_64-unknown-yggdrasil")
+
+# Disable default system libraries
+# set(CMAKE_EXE_LINKER_FLAGS "-nostdlib")
+# set(CMAKE_SHARED_LINKER_FLAGS "-v")
+
+set(CMAKE_C_FLAGS "--target=x86_64-unknown-yggdrasil -fPIC")
+set(CMAKE_CXX_FLAGS "--target=x86_64-unknown-yggdrasil -nostdlib++ -fPIC -D_LIBCPP_HAS_NO_MONOTONIC_CLOCK=1 -D_LIBCPP_HAS_NO_TREE_BARRIER")

xtask.toml

@@ -1,2 +0,0 @@
-[toolchain]
-branch = "alnyan/yggdrasil-1.84.0"

xtask/src/build/c.rs

@@ -10,14 +10,13 @@ use crate::{
     util::{self, git_clone},
 };
 
-use super::cargo::CargoBuilder;
+use super::{
+    cargo::CargoBuilder,
+    toolchain_c::{self, Llvm},
+};
 
 pub const OPENLIBM_URL: &str = "https://git.alnyan.me/yggdrasil/openlibm.git";
 
-pub struct Llvm {
-    root: PathBuf,
-}
-
 pub struct Ygglibc {
     static_lib_file: PathBuf,
     shared_lib_file: PathBuf,
@@ -31,29 +30,6 @@ pub struct Openlibm {
     include_path: PathBuf,
 }
 
-impl Llvm {
-    pub fn c_clang(&self, env: &BuildEnv) -> Command {
-        let mut command = Command::new(self.root.join("bin/clang"));
-        command.arg(format!("--target={}-unknown-yggdrasil", env.arch.name()));
-        command.arg(format!("--sysroot={}", env.llvm_sysroot.display()));
-        command
-    }
-
-    pub fn c_clangpp(&self, env: &BuildEnv) -> Command {
-        let mut command = Command::new(self.root.join("bin/clang++"));
-        command.arg(format!("--target={}-unknown-yggdrasil", env.arch.name()));
-        command.arg(format!("--sysroot={}", env.llvm_sysroot.display()));
-        // TODO: Not yet implemented features:
-        command.arg("-fno-exceptions");
-        command.arg("-fno-rtti");
-        command
-    }
-
-    pub fn clang(&self) -> PathBuf {
-        self.root.join("bin/clang")
-    }
-}
-
 fn build_test_cpp_program(
     env: &BuildEnv,
     llvm: &Llvm,
@@ -226,43 +202,18 @@ fn install_openlibm(env: &BuildEnv, libm: &Openlibm) -> Result<(), Error> {
     Ok(())
 }
 
-fn build_llvm(env: &BuildEnv) -> Result<Llvm, Error> {
-    // Configuration:
-    /*
-        cmake
-            -DLLVM_ENABLE_PROJECTS="clang;lld;compiler-rt"
-            -DLLVM_TARGETS_TO_BUILD=X86
-            -DCMAKE_SYSTEM_NAME=yggdrasil
-            -DLLVM_USE_LINKER=lld
-            -DBUILD_SHARED_LIBS=false
-            -DLLVM_BUILD_TOOLS=false
-            -DLLVM_CCACHE_BUILD=true
-            -DCMAKE_BUILD_TYPE=Release
-            -DCMAKE_HOST_TRIPLE=x86_64-unknown-linux-gnu
-            -DUNIX=1
-            -GNinja
-            -DCMAKE_INSTALL_PREFIX=/home/alnyan/build/ygg/toolchain-c/prefix/host ../llvm
-
-    Build:
-    cmake --build . -j 16
-
-    Install:
-    cmake --build . -t install
-     */
-
-    // TODO actually build and install LLVM
-    Ok(Llvm {
-        root: env.workspace_root.join("toolchain-c/prefix/host"),
-    })
-}
-
 pub fn build_c(env: &BuildEnv, install: &mut Vec<(PathBuf, PathBuf)>) -> Result<(), Error> {
-    let llvm = build_llvm(env)?;
+    let llvm = toolchain_c::install_llvm_compiler(env)?;
     let ygglibc = build_ygglibc(env)?;
     install_ygglibc(env, &ygglibc)?;
+
+    toolchain_c::install_compiler_rt(env, &llvm)?;
+
     let libm = build_openlibm(env, &llvm)?;
     install_openlibm(env, &libm)?;
 
+    toolchain_c::install_llvm_cxx_runtime(env, &llvm)?;
+
     build_test_c_program(env, &llvm, install)?;
     build_test_cpp_program(env, &llvm, install)?;
 

xtask/src/build/mod.rs

@@ -17,6 +17,7 @@ pub mod c;
 mod cargo;
 mod module;
 pub mod toolchain;
+pub mod toolchain_c;
 mod userspace;
 
 #[derive(Debug)]

xtask/src/build/toolchain_c.rs

@@ -0,0 +1,225 @@
+use std::{fs, path::PathBuf, process::Command};
+
+use crate::{env::BuildEnv, error::Error};
+
+pub struct Llvm {
+    root: PathBuf,
+}
+
+impl Llvm {
+    pub fn c_clang(&self, env: &BuildEnv) -> Command {
+        let mut command = Command::new(self.root.join("bin/clang"));
+        command.arg(format!("--target={}-unknown-yggdrasil", env.arch.name()));
+        command.arg(format!("--sysroot={}", env.llvm_sysroot.display()));
+        command
+    }
+
+    pub fn c_clangpp(&self, env: &BuildEnv) -> Command {
+        let mut command = Command::new(self.root.join("bin/clang++"));
+        command.arg(format!("--target={}-unknown-yggdrasil", env.arch.name()));
+        command.arg(format!("--sysroot={}", env.llvm_sysroot.display()));
+        // TODO: Not yet implemented features:
+        command.arg("-fno-exceptions");
+        command.arg("-fno-rtti");
+        command
+    }
+
+    pub fn clang(&self) -> PathBuf {
+        self.root.join("bin/clang")
+    }
+}
+
+pub fn install_compiler_rt(env: &BuildEnv, llvm: &Llvm) -> Result<(), Error> {
+    let build_dir = env.workspace_root.join(format!(
+        "toolchain-c/llvm-project/build-{}/compiler-rt",
+        env.arch.name()
+    ));
+    let makefile = build_dir.join("build.ninja");
+    let toolchain_cmake = env.workspace_root.join(format!(
+        "toolchain-c/cmake/toolchain-{}.cmake",
+        env.arch.name()
+    ));
+
+    fs::create_dir_all(&build_dir)?;
+
+    if !makefile.exists() {
+        log::info!("Configure compiler-rt for {}", env.arch.name());
+
+        let mut command = Command::new("cmake");
+        command.current_dir(&build_dir);
+        command.env("CROSS_TOOLCHAIN_PREFIX", &llvm.root);
+        command
+            .arg(format!("--toolchain={}", toolchain_cmake.display()))
+            .arg("-DCOMPILER_RT_BUILD_BUILTINS=ON")
+            .arg("-DCOMPILER_RT_BUILD_LIBFUZZER=OFF")
+            .arg("-DCOMPILER_RT_BUILD_MEMPROF=OFF")
+            .arg("-DCOMPILER_RT_BUILD_PROFILE=OFF")
+            .arg("-DCOMPILER_RT_BUILD_CTX_PROFILE=OFF")
+            .arg("-DCOMPILER_RT_BUILD_SANITIZERS=OFF")
+            .arg("-DCOMPILER_RT_BUILD_XRAY=OFF")
+            .arg("-DCOMPILER_RT_BUILD_STANDALONE_LIBATOMIC=ON")
+            .arg("-DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON")
+            .arg("-DCOMPILER_RT_BAREMETAL_BUILD=ON")
+            .arg("-DCOMPILER_RT_BUILTINS_ENABLE_PIC=ON")
+            .arg("-DCOMPILER_RT_BUILTINS_HIDE_SYMBOLS=OFF")
+            .arg("-DDEFAULT_COMPILER_RT_USE_BUILTINS_LIBRARY=ON")
+            .arg("-DCMAKE_EXE_LINKER_FLAGS=-nostdlib")
+            .arg(format!(
+                "-DLLVM_CMAKE_DIR={}/lib/cmake/llvm",
+                llvm.root.display()
+            ))
+            .arg(format!("-DCMAKE_SYSROOT={}", env.llvm_sysroot.display()))
+            .arg(format!(
+                "-DCMAKE_INSTALL_PREFIX={}",
+                env.llvm_sysroot.display()
+            ))
+            .arg("-GNinja")
+            .arg("../../compiler-rt");
+
+        if !command.status()?.success() {
+            todo!()
+        }
+    }
+
+    // Build and install compiler-rt
+    log::info!("Build compiler-rt for {}", env.arch.name());
+    let mut command = Command::new("cmake");
+    command.current_dir(&build_dir);
+    command
+        .args(["--build", "."])
+        .args(["-t install"])
+        .arg("-j");
+
+    if !command.status()?.success() {
+        todo!()
+    }
+
+    Ok(())
+}
+
+pub fn install_llvm_cxx_runtime(env: &BuildEnv, llvm: &Llvm) -> Result<(), Error> {
+    let build_dir = env.workspace_root.join(format!(
+        "toolchain-c/llvm-project/build-{}/runtimes",
+        env.arch.name()
+    ));
+    let makefile = build_dir.join("build.ninja");
+    let toolchain_cmake = env.workspace_root.join(format!(
+        "toolchain-c/cmake/toolchain-{}.cmake",
+        env.arch.name()
+    ));
+
+    fs::create_dir_all(&build_dir)?;
+
+    if !makefile.exists() {
+        log::info!("Configure libc++/libc++abi for {}", env.arch.name());
+
+        let mut command = Command::new("cmake");
+        command.current_dir(&build_dir);
+        command.env("CROSS_TOOLCHAIN_PREFIX", &llvm.root);
+        command
+            .arg(format!("--toolchain={}", toolchain_cmake.display()))
+            .arg("-GNinja")
+            .arg("-DCMAKE_BUILD_TYPE=RelWithDebInfo")
+            .arg("-DLLVM_ENABLE_RUNTIMES=libcxxabi;libcxx")
+            .arg("-DLIBCXXABI_ENABLE_STATIC=ON")
+            .arg("-DLIBCXXABI_ENABLE_SHARED=OFF")
+            .arg("-DLIBCXXABI_USE_COMPILER_RT=ON")
+            .arg("-DLIBCXXABI_ENABLE_THREADS=OFF")
+            .arg("-DLIBCXXABI_ENABLE_EXCEPTIONS=OFF")
+            .arg("-DLIBCXXABI_USE_LLVM_UNWINDER=OFF")
+            .arg("-DLIBCXX_CXX_ABI=libcxxabi")
+            .arg("-DLIBCXX_STATICALLY_LINK_ABI_IN_STATIC_LIBRARY=ON")
+            .arg("-DLIBCXX_STATICALLY_LINK_ABI_IN_SHARED_LIBRARY=ON")
+            .arg("-DLIBCXX_ENABLE_STATIC_ABI_LIBRARY=ON")
+            .arg("-DLIBCXX_ENABLE_FILESYSTEM=ON")
+            .arg("-DLIBCXX_ENABLE_THREADS=OFF")
+            .arg("-DLIBCXX_ENABLE_EXCEPTIONS=OFF")
+            .arg("-DLIBCXX_ENABLE_SHARED=ON")
+            .arg("-DLIBCXX_ENABLE_STATIC=ON")
+            .arg("-DLIBCXX_INCLUDE_BENCHMARKS=OFF")
+            .arg("-DCMAKE_EXE_LINKER_FLAGS=-nostdlib")
+            .arg(format!(
+                "-DLLVM_DEFAULT_TARGET_TRIPLE={}-unknown-yggdrasil",
+                env.arch.name()
+            ))
+            .arg(format!("-DCMAKE_SYSROOT={}", env.llvm_sysroot.display()))
+            .arg(format!(
+                "-DCMAKE_INSTALL_PREFIX={}",
+                env.llvm_sysroot.display()
+            ))
+            .arg("../../runtimes");
+
+        if !command.status()?.success() {
+            todo!()
+        }
+    }
+
+    // Build and install libc++/abi
+    // TODO each rebuild of ygglibc reinstalls headers which triggers libc++ rebuild,
+    //      only copy those if the mtime on ygglibc's headers is newer than whatever's
+    //      present in the sysroot
+    log::info!("Build libc++/libc++abi for {}", env.arch.name());
+    let mut command = Command::new("cmake");
+    command.current_dir(&build_dir);
+    command
+        .args(["--build", "."])
+        .args(["-t install"])
+        .arg("-j");
+
+    if !command.status()?.success() {
+        todo!()
+    }
+
+    Ok(())
+}
+
+pub fn install_llvm_compiler(env: &BuildEnv) -> Result<Llvm, Error> {
+    let root = env.workspace_root.join("toolchain-c/prefix/host");
+    let build_dir = env.workspace_root.join("toolchain-c/llvm-project/build");
+    let makefile = build_dir.join("build.ninja");
+
+    fs::create_dir_all(&build_dir)?;
+
+    // TODO clone LLVM
+
+    // Configure LLVM
+    // TODO option to force reconfig
+    if !makefile.exists() {
+        log::info!("Configure LLVM");
+
+        let mut command = Command::new("cmake");
+        command.current_dir(&build_dir);
+        command
+            .arg("-DCMAKE_BUILD_TYPE=Release")
+            .arg("-DCMAKE_C_COMPILER=/usr/bin/clang")
+            .arg("-DCMAKE_CXX_COMPILER=/usr/bin/clang++")
+            .arg("-DBUILD_SHARED_LIBS=false")
+            .arg("-DLLVM_ENABLE_PROJECTS=clang;lld;compiler-rt")
+            .arg("-DLLVM_USE_LINKER=lld")
+            .arg("-DLLVM_BUILD_TOOLS=false")
+            .arg("-DLLVM_CCACHE_BUILD=true")
+            .arg("-DLLVM_TARGETS_TO_BUILD=X86;AArch64")
+            .arg(&format!("-DCMAKE_INSTALL_PREFIX={}", root.display()))
+            .arg("-GNinja")
+            .arg("../llvm");
+
+        if !command.status()?.success() {
+            todo!()
+        }
+    }
+
+    // Build and install LLVM
+    log::info!("Build LLVM");
+    let mut command = Command::new("cmake");
+    command.current_dir(&build_dir);
+    command
+        .args(["--build", "."])
+        .args(["-t install"])
+        .arg("-j");
+
+    if !command.status()?.success() {
+        todo!()
+    }
+
+    Ok(Llvm { root })
+}

xtask/src/env.rs

@@ -8,10 +8,45 @@ pub struct ToolchainConfig {
     pub branch: String,
 }
 
+#[derive(Debug, serde::Deserialize)]
+#[serde(default)]
+pub struct BuildComponents {
+    pub libc: bool,
+    // Depends on .libc
+    pub libcxx: bool,
+}
+
+#[derive(Debug, Default, serde::Deserialize)]
+#[serde(default)]
+pub struct AArch64TargetConfig {
+    pub components: BuildComponents,
+}
+
+#[derive(Debug, Default, serde::Deserialize)]
+#[serde(default)]
+pub struct X86_64TargetConfig {
+    pub components: BuildComponents,
+}
+
+#[derive(Debug, Default, serde::Deserialize)]
+#[serde(default)]
+pub struct I686TargetConfig {
+    pub components: BuildComponents,
+}
+
+#[derive(Debug, Default, serde::Deserialize)]
+#[serde(default)]
+pub struct TargetConfig {
+    pub aarch64: AArch64TargetConfig,
+    pub x86_64: X86_64TargetConfig,
+    pub i686: I686TargetConfig,
+}
+
 #[derive(Debug, Default, serde::Deserialize)]
 #[serde(default)]
 pub struct XTaskConfig {
     pub toolchain: ToolchainConfig,
+    pub target: TargetConfig,
 }
 
 #[derive(Debug, Default, Clone, Copy, PartialEq, Eq, ValueEnum)]
@@ -52,7 +87,16 @@ pub struct BuildEnv {
 impl Default for ToolchainConfig {
     fn default() -> Self {
         Self {
-            branch: "alnyan/yggdrasil-master".into(),
+            branch: "alnyan/yggdrasil-1.84.0".into(),
+        }
+    }
+}
+
+impl Default for BuildComponents {
+    fn default() -> Self {
+        Self {
+            libc: true,
+            libcxx: true,
         }
     }
 }

xtask/src/main.rs

@@ -4,7 +4,7 @@ use std::{fs, path::PathBuf, process::ExitCode};
 
 use build::CheckAction;
 use clap::{Parser, Subcommand};
-use env::{Arch, Profile};
+use env::{Arch, Profile, XTaskConfig};
 use error::Error;
 
 #[macro_use]
@@ -38,13 +38,8 @@ struct Args {
     #[clap(short, long, help = "Be verbose where possible")]
     verbose: bool,
 
-    #[clap(
-        short = 'C',
-        long,
-        default_value = "xtask.toml",
-        help = "Configuration path"
-    )]
-    config_path: PathBuf,
+    #[clap(short = 'C', long, help = "Configuration path")]
+    config_path: Option<PathBuf>,
 
     #[clap(subcommand)]
     action: Option<SubArgs>,
@@ -97,8 +92,12 @@ fn run(args: Args) -> Result<(), Error> {
     } else {
         Profile::Debug
     };
-    let config = toml::from_str(&fs::read_to_string(&args.config_path)?)
-        .map_err(|e| Error::TomlParseError(args.config_path.clone(), e))?;
+    let config = if let Some(path) = &args.config_path {
+        toml::from_str(&fs::read_to_string(path)?)
+            .map_err(|e| Error::TomlParseError(path.to_owned(), e))?
+    } else {
+        XTaskConfig::default()
+    };
     let env = env::BuildEnv::new(config, args.verbose, profile, args.arch, workspace_root);
 
     if args.clean_userspace && !matches!(&action, SubArgs::Clean { .. }) {