1 files changed, 157 insertions, 0 deletions
diff --git a/src/bootstrap/build/native.rs b/src/bootstrap/build/native.rs
new file mode 100644
index 00000000000..6ad5f404123
--- /dev/null
+++ b/src/bootstrap/build/native.rs
@@ -0,0 +1,157 @@
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use std::path::Path;
+use std::process::Command;
+use std::fs;
+
+use build_helper::output;
+use cmake;
+
+use build::Build;
+use build::util::{exe, staticlib};
+
+pub fn llvm(build: &Build, target: &str) {
+    // If we're using a custom LLVM bail out here, but we can only use a
+    // custom LLVM for the build triple.
+    if let Some(config) = build.config.target_config.get(target) {
+        if let Some(ref s) = config.llvm_config {
+            return check_llvm_version(build, s);
+        }
+    }
+
+    // If the cleaning trigger is newer than our built artifacts (or if the
+    // artifacts are missing) then we keep going, otherwise we bail out.
+    let dst = build.llvm_out(target);
+    let stamp = build.src.join("src/rustllvm/llvm-auto-clean-trigger");
+    let llvm_config = dst.join("bin").join(exe("llvm-config", target));
+    build.clear_if_dirty(&dst, &stamp);
+    if fs::metadata(llvm_config).is_ok() {
+        return
+    }
+
+    let _ = fs::remove_dir_all(&dst.join("build"));
+    t!(fs::create_dir_all(&dst.join("build")));
+    let assertions = if build.config.llvm_assertions {"ON"} else {"OFF"};
+
+    // http://llvm.org/docs/CMake.html
+    let mut cfg = cmake::Config::new(build.src.join("src/llvm"));
+    cfg.target(target)
+       .host(&build.config.build)
+       .out_dir(&dst)
+       .profile(if build.config.llvm_optimize {"Release"} else {"Debug"})
+       .define("LLVM_ENABLE_ASSERTIONS", assertions)
+       .define("LLVM_TARGETS_TO_BUILD", "X86;ARM;AArch64;Mips;PowerPC")
+       .define("LLVM_INCLUDE_EXAMPLES", "OFF")
+       .define("LLVM_INCLUDE_TESTS", "OFF")
+       .define("LLVM_INCLUDE_DOCS", "OFF")
+       .define("LLVM_ENABLE_ZLIB", "OFF")
+       .define("WITH_POLLY", "OFF")
+       .define("LLVM_ENABLE_TERMINFO", "OFF")
+       .define("LLVM_ENABLE_LIBEDIT", "OFF")
+       .define("LLVM_PARALLEL_COMPILE_JOBS", build.jobs().to_string());
+
+    if target.starts_with("i686") {
+        cfg.define("LLVM_BUILD_32_BITS", "ON");
+    }
+
+    // http://llvm.org/docs/HowToCrossCompileLLVM.html
+    if target != build.config.build {
+        // FIXME: if the llvm root for the build triple is overridden then we
+        //        should use llvm-tblgen from there, also should verify that it
+        //        actually exists most of the time in normal installs of LLVM.
+        let host = build.llvm_out(&build.config.build).join("bin/llvm-tblgen");
+        cfg.define("CMAKE_CROSSCOMPILING", "True")
+           .define("LLVM_TARGET_ARCH", target.split('-').next().unwrap())
+           .define("LLVM_TABLEGEN", &host)
+           .define("LLVM_DEFAULT_TARGET_TRIPLE", target);
+    }
+
+    // MSVC handles compiler business itself
+    if !target.contains("msvc") {
+        if build.config.ccache {
+           cfg.define("CMAKE_C_COMPILER", "ccache")
+              .define("CMAKE_C_COMPILER_ARG1", build.cc(target))
+              .define("CMAKE_CXX_COMPILER", "ccache")
+              .define("CMAKE_CXX_COMPILER_ARG1", build.cxx(target));
+        } else {
+           cfg.define("CMAKE_C_COMPILER", build.cc(target))
+              .define("CMAKE_CXX_COMPILER", build.cxx(target));
+        }
+        cfg.build_arg("-j").build_arg(build.jobs().to_string());
+    }
+
+    // FIXME: we don't actually need to build all LLVM tools and all LLVM
+    //        libraries here, e.g. we just want a few components and a few
+    //        tools. Figure out how to filter them down and only build the right
+    //        tools and libs on all platforms.
+    cfg.build();
+}
+
+fn check_llvm_version(build: &Build, llvm_config: &Path) {
+    if !build.config.llvm_version_check {
+        return
+    }
+
+    let mut cmd = Command::new(llvm_config);
+    let version = output(cmd.arg("--version"));
+    if version.starts_with("3.5") || version.starts_with("3.6") ||
+       version.starts_with("3.7") {
+        return
+    }
+    panic!("\n\nbad LLVM version: {}, need >=3.5\n\n", version)
+}
+
+pub fn compiler_rt(build: &Build, target: &str) {
+    let dst = build.compiler_rt_out(target);
+    let arch = target.split('-').next().unwrap();
+    let mode = if build.config.rust_optimize {"Release"} else {"Debug"};
+    let (dir, build_target, libname) = if target.contains("linux") {
+        let os = if target.contains("android") {"-android"} else {""};
+        let target = format!("clang_rt.builtins-{}{}", arch, os);
+        ("linux".to_string(), target.clone(), target)
+    } else if target.contains("darwin") {
+        let target = format!("clang_rt.builtins_{}_osx", arch);
+        ("builtins".to_string(), target.clone(), target)
+    } else if target.contains("windows-gnu") {
+        let target = format!("clang_rt.builtins-{}", arch);
+        ("windows".to_string(), target.clone(), target)
+    } else if target.contains("windows-msvc") {
+        (format!("windows/{}", mode),
+         "lib/builtins/builtins".to_string(),
+         format!("clang_rt.builtins-{}", arch.replace("i686", "i386")))
+    } else {
+        panic!("can't get os from target: {}", target)
+    };
+    let output = dst.join("build/lib").join(dir)
+                    .join(staticlib(&libname, target));
+    build.compiler_rt_built.borrow_mut().insert(target.to_string(),
+                                                output.clone());
+    if fs::metadata(&output).is_ok() {
+        return
+    }
+    let _ = fs::remove_dir_all(&dst);
+    t!(fs::create_dir_all(&dst));
+    let build_llvm_config = build.llvm_out(&build.config.build)
+                                 .join("bin")
+                                 .join(exe("llvm-config", &build.config.build));
+    let mut cfg = cmake::Config::new(build.src.join("src/compiler-rt"));
+    cfg.target(target)
+       .host(&build.config.build)
+       .out_dir(&dst)
+       .profile(mode)
+       .define("LLVM_CONFIG_PATH", build_llvm_config)
+       .define("COMPILER_RT_DEFAULT_TARGET_TRIPLE", target)
+       .define("COMPILER_RT_BUILD_SANITIZERS", "OFF")
+       .define("COMPILER_RT_BUILD_EMUTLS", "OFF")
+       .define("CMAKE_C_COMPILER", build.cc(target))
+       .build_target(&build_target);
+    cfg.build();
+}