tesuji · October 2, 2020 11:37 · Oct 2, 2020
diff --git a/config.toml b/config.toml
@@ -0,0 +1,118 @@
+# Sample TOML configuration file for building Rust.
+
+changelog-seen = 1
+
+# =============================================================================
+# Tweaking how LLVM is compiled
+# =============================================================================
+[llvm]
+# Whether to use Rust CI built LLVM instead of locally building it.
+#
+# Unless you're developing for a target where Rust CI doesn't build a compiler
+# toolchain or changing LLVM locally, you probably want to set this to true.
+#
+# It's currently false by default due to being newly added; please file bugs if
+# enabling this did not work for you on Linux (macOS and Windows support is
+# coming soon).
+#
+# We also currently only support this when building LLVM for the build triple.
+#
+# Note that many of the LLVM options are not currently supported for
+# downloading. Currently only the "assertions" option can be toggled.
+download-ci-llvm = true
+
+# Indicates whether ccache is used when building LLVM
+ccache = true
+# or alternatively ...
+#ccache = "/path/to/ccache"
+# Whether to use Ninja to build LLVM. This runs much faster than make.
+ninja = true
+
+# LLVM targets to build support for.
+# Note: this is NOT related to Rust compilation targets. However, as Rust is
+# dependent on LLVM for code generation, turning targets off here WILL lead to
+# the resulting rustc being unable to compile for the disabled architectures.
+# Also worth pointing out is that, in case support for new targets are added to
+# LLVM, enabling them here doesn't mean Rust is automatically gaining said
+# support. You'll need to write a target specification at least, and most
+# likely, teach rustc about the C ABI of the target. Get in touch with the
+# Rust team and file an issue if you need assistance in porting!
+#targets = "AArch64;ARM;Mips;X86"
+#experimental-targets = ""
+
+# =============================================================================
+# General build configuration options
+# =============================================================================
+[build]
+
+# Instead of downloading the src/stage0.txt version of Cargo specified, use
+# this Cargo binary instead to build all Rust code
+cargo = "/home/lzutao/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/cargo"
+
+# Instead of downloading the src/stage0.txt version of the compiler
+# specified, use this rustc binary instead as the stage0 snapshot compiler.
+rustc = "/home/lzutao/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/rustc"
+
+# Instead of download the src/stage0.txt version of rustfmt specified,
+# use this rustfmt binary instead as the stage0 snapshot rustfmt.
+#rustfmt = "/path/to/bin/rustfmt"
+
+# Flag to specify whether any documentation is built. If false, rustdoc and
+# friends will still be compiled but they will not be used to generate any
+# documentation.
+#docs = true
+
+# Indicate whether the compiler should be documented in addition to the standard
+# library and facade crates.
+#compiler-docs = false
+
+# Indicate whether git submodules are managed and updated automatically.
+submodules = false
+
+# Indicates that a local rebuild is occurring instead of a full bootstrap,
+# essentially skipping stage0 as the local compiler is recompiling itself again.
+local-rebuild = true
+
+# Print out how long each rustbuild step took (mostly intended for CI and
+# tracking over time)
+#print-step-timings = false
+
+# =============================================================================
+# Options for compiling Rust code itself
+# =============================================================================
+[rust]
+# Whether to always use incremental compilation when building rustc
+incremental = true
+
+# debug = true
+
+# Whether or not debug assertions are enabled for the compiler and standard
+# library. Debug assertions control the maximum log level used by rustc. When
+# enabled calls to `trace!` and `debug!` macros are preserved in the compiled
+# binary, otherwise they are omitted.
+#
+# Defaults to rust.debug value
+#debug-assertions = debug
+
+# Whether or not to leave debug! and trace! calls in the rust binary.
+# Overrides the `debug-assertions` option, if defined.
+#
+# Defaults to rust.debug-assertions value
+#debug-logging = debug-assertions
+
+# =============================================================================
+# Options for specific targets
+#
+# Each of the following options is scoped to the specific target triple in
+# question and is used for determining how to compile each target.
+# =============================================================================
+[target.x86_64-unknown-linux-gnu]
+
+# Path to the `llvm-config` binary of the installation of a custom LLVM to link
+# against. Note that if this is specified we don't compile LLVM at all for this
+# target.
+#llvm-config = "/home/lzutao/.local/bin/llvm-config"
+
+# Normally the build system can find LLVM's FileCheck utility, but if
+# not, you can specify an explicit file name for it.
+#llvm-filecheck = "/path/to/FileCheck"
diff --git a/setup-rustc-worktree.bash b/setup-rustc-worktree.bash
@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+
+set -e
+
+git config feature.manyFiles true
+
+GIT_COMMON_DIR=$(git rev-parse --git-common-dir)
+cp -if "$GIT_COMMON_DIR"/../../config.toml .
+
+# for path in $(grep 'path = ' .gitmodules | awk '{print $3}'); do
+#     if [[ -e "$path" ]]; then
+#         rmdir "$path"
+#     fi
+#     cp -lr "$ROOT/../$path" "$path"
+# done
+
+git submodule deinit --all -f
+
+LOCAL_MODULES=$(git rev-parse --git-dir)
+# not supported in ext4
+# cp --archive --reflink "$GIT_COMMON_DIR"/modules "$LOCAL_MODULES"
+cp --archive --link "$GIT_COMMON_DIR"/modules "$LOCAL_MODULES"
+
+git submodule init
+git submodule update