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Auto merge of #74922 - joshtriplett:ninja-by-default, r=Mark-Simulacrum
Set ninja=true by default Ninja substantially improves LLVM build time. On a 96-way system, using Make took 248s, and using Ninja took 161s, a 35% improvement. We already require a variety of tools to build Rust. If someone wants to build without Ninja (for instance, to minimize the set of packages required to bootstrap a new target), they can easily set `ninja=false` in `config.toml`. Our defaults should help people build Rust (and LLVM) faster, to speed up development.
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‎.github/workflows/ci.yml

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@@ -583,7 +583,7 @@ jobs:
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- name: dist-x86_64-apple
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env:
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SCRIPT: "./x.py dist"
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RUST_CONFIGURE_ARGS: "--target=aarch64-apple-ios,x86_64-apple-ios --enable-full-tools --enable-sanitizers --enable-profiler --set rust.jemalloc"
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RUST_CONFIGURE_ARGS: "--target=aarch64-apple-ios,x86_64-apple-ios --enable-full-tools --enable-sanitizers --enable-profiler --set rust.jemalloc --set llvm.ninja=false"
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RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
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MACOSX_DEPLOYMENT_TARGET: 10.7
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NO_LLVM_ASSERTIONS: 1
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- name: dist-x86_64-apple-alt
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env:
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SCRIPT: "./x.py dist"
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RUST_CONFIGURE_ARGS: "--enable-extended --enable-profiler --set rust.jemalloc"
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RUST_CONFIGURE_ARGS: "--enable-extended --enable-profiler --set rust.jemalloc --set llvm.ninja=false"
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RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
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MACOSX_DEPLOYMENT_TARGET: 10.7
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NO_LLVM_ASSERTIONS: 1
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- name: x86_64-apple
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env:
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SCRIPT: "./x.py --stage 2 test"
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RUST_CONFIGURE_ARGS: "--build=x86_64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc"
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RUST_CONFIGURE_ARGS: "--build=x86_64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc --set llvm.ninja=false"
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RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
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MACOSX_DEPLOYMENT_TARGET: 10.8
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MACOSX_STD_DEPLOYMENT_TARGET: 10.7

‎README.md

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‎config.toml.example

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# dynamic version to be available.
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#static-libstdcpp = false
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# Tell the LLVM build system to use Ninja instead of the platform default for
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# the generated build system. This can sometimes be faster than make, for
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# example.
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#ninja = false
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# Whether to use Ninja to build LLVM. This runs much faster than make.
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#ninja = true
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# LLVM targets to build support for.
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# Note: this is NOT related to Rust compilation targets. However, as Rust is

‎src/bootstrap/builder/tests.rs

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@@ -8,6 +8,7 @@ fn configure(host: &[&str], target: &[&str]) -> Config {
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config.save_toolstates = None;
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config.skip_only_host_steps = false;
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config.dry_run = true;
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config.ninja = false;
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// try to avoid spurious failures in dist where we create/delete each others file
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let dir = config
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.out

‎src/bootstrap/config.rs

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@@ -450,6 +450,7 @@ impl Config {
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pub fn default_opts() -> Config {
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let mut config = Config::default();
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config.llvm_optimize = true;
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config.ninja = true;
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config.llvm_version_check = true;
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config.backtrace = true;
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config.rust_optimize = true;

‎src/bootstrap/sanity.rs

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@@ -100,8 +100,16 @@ pub fn check(build: &mut Build) {
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if build.config.ninja {
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// Some Linux distros rename `ninja` to `ninja-build`.
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// CMake can work with either binary name.
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if cmd_finder.maybe_have("ninja-build").is_none() {
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cmd_finder.must_have("ninja");
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if cmd_finder.maybe_have("ninja-build").is_none()
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&& cmd_finder.maybe_have("ninja").is_none()
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{
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eprintln!(
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"
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Couldn't find required command: ninja
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You should install ninja, or set ninja=false in config.toml
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"
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);
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std::process::exit(1);
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}
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}
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‎src/ci/azure-pipelines/auto.yml

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# version that we're using, 8.2, cannot compile LLVM for OSX 10.7.
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x86_64-apple:
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SCRIPT: ./x.py --stage 2 test
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INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc
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INITIAL_RUST_CONFIGURE_ARGS: --build=x86_64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc --set llvm.ninja=false
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RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
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MACOSX_DEPLOYMENT_TARGET: 10.8
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MACOSX_STD_DEPLOYMENT_TARGET: 10.7
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dist-x86_64-apple:
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SCRIPT: ./x.py dist
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INITIAL_RUST_CONFIGURE_ARGS: --target=aarch64-apple-ios,x86_64-apple-ios --enable-full-tools --enable-sanitizers --enable-profiler --set rust.jemalloc
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INITIAL_RUST_CONFIGURE_ARGS: --target=aarch64-apple-ios,x86_64-apple-ios --enable-full-tools --enable-sanitizers --enable-profiler --set rust.jemalloc --set llvm.ninja=false
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RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
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MACOSX_DEPLOYMENT_TARGET: 10.7
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NO_LLVM_ASSERTIONS: 1
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dist-x86_64-apple-alt:
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SCRIPT: ./x.py dist
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INITIAL_RUST_CONFIGURE_ARGS: --enable-extended --enable-profiler --set rust.jemalloc
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INITIAL_RUST_CONFIGURE_ARGS: --enable-extended --enable-profiler --set rust.jemalloc --set llvm.ninja=false
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RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
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MACOSX_DEPLOYMENT_TARGET: 10.7
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NO_LLVM_ASSERTIONS: 1

‎src/ci/docker/host-aarch64/aarch64-gnu/Dockerfile

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RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
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g++ \
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make \
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ninja-build \
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file \
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curl \
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ca-certificates \

‎src/ci/docker/host-x86_64/armhf-gnu/Dockerfile

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@@ -14,6 +14,7 @@ RUN apt-get update -y && apt-get install -y --no-install-recommends \
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libc6-dev \
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libc6-dev-armhf-cross \
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make \
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ninja-build \
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python3 \
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qemu-system-arm \
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xz-utils

‎src/ci/docker/host-x86_64/disabled/asmjs/Dockerfile

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@@ -3,6 +3,7 @@ FROM ubuntu:16.04
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RUN apt-get update && apt-get install -y --no-install-recommends \
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g++ \
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make \
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ninja-build \
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file \
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curl \
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ca-certificates \

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