1# Copyright 2023 The Chromium Authors 2# Use of this source code is governed by a BSD-style license that can be 3# found in the LICENSE file. 4 5# Provides per-crate and overall configuration options to gnrt. 6# 7# Most commonly needed configuration options can be found in the top-level doc 8# comment in //third_party/rust/chromium_crates_io/gnrt_config.toml. As a 9# fallback, one may also read the doc comments in 10# `//tools/crates/gnrt/lib/config.rs` (e.g. `CrateConfig`'s fields correspond 11# to per-crate options). 12 13[resolve] 14# `/build/rust/std/fake_root` is an artificial crate that depends on a 15# `sysroot` crate from `//third_party/rust-src/library/sysroot` while also 16# turning on all the required crate features of `sysroot`. `sysroot` includes 17# all sysroot libraries as dependencies. 18root = "fake_root" 19 20# Workaround for Cargo issue: hashbrown's Cargo.toml uses an unstable Cargo 21# feature that leads to incorrect `cargo metadata` output. 22# 23# TODO(https://github.com/rust-lang/cargo/issues/10801): remove workaround once 24# issue is fixed. 25remove_crates = ['allocator-api2', 'shlex'] 26 27[gn] 28build_file_template = "BUILD.gn.hbs" 29 30[all-crates] 31# std crates should have metadata applied to them. This would avoid any symbol 32# conflicts between std dependencies and third_party/rust crates. 33# 34# However, we can't apply it yet. GN can't automatically clean old artifacts, 35# nor can we delete and rebuild the sysroot on every build. 36# 37# TODO(crbug.com/40196262): set up GN rules to rebuilt the sysroot only when 38# needed. Then set this metadata. 39# 40# rustc_metadata = "libstd" 41 42extra_kv = { include_coverage = true } 43 44[crate.compiler_builtins] 45# Dependencies of profiler_builtins must have instrumentation disabled 46# The build script conditionally generates a file; it's simplest to just paste 47# raw GN into the output. (crbug.com/1470653) 48extra_kv = { include_coverage = false, raw_gn = 'if (current_cpu == "arm64") { build_script_outputs = ["outlined_atomics.rs"] }' } 49extra_src_roots = [ 50 # compiler_builtins depends on libm on windows crbug.com/1472681 51 '../libm', 52] 53extra_build_script_src_roots = [ 54 '../configure.rs', 55] 56 57[crate.core] 58# Dependencies of profiler_builtins must have instrumentation disabled 59extra_kv = { include_coverage = false, immediate_abort = true } 60extra_src_roots = ['../../portable-simd/crates/core_simd', '../../stdarch/crates/core_arch'] 61 62[crate.hashbrown] 63# Workaround for Cargo issue: hashbrown's Cargo.toml uses an unstable Cargo 64# feature that leads to incorrect `cargo metadata` output. 65# 66# TODO(https://github.com/rust-lang/cargo/issues/10801): remove workaround once 67# issue is fixed. 68remove_deps = ['allocator-api2'] 69 70[crate.libc] 71# This target is #[no_core] when included by std, which is incompatible with 72# profiling. 73extra_kv = { include_coverage = false } 74 75[crate.profiler_builtins] 76# The build script is used to compile a profiler-rt library, but we get 77# the profiler rt library from clang, so we skip this. 78# 79# profiler_builtins cannot depend on itself, which it would if build with 80# instrumentation. 81extra_kv = { include_coverage = false, skip_build_rs = true } 82 83[crate.rustc-std-workspace-alloc] 84# This target is #[no_core] which is incompatible with profiling. 85extra_kv = { include_coverage = false } 86 87[crate.rustc-std-workspace-core] 88# Dependencies of profiler_builtins must have instrumentation disabled 89extra_kv = { include_coverage = false } 90 91[crate.std] 92extra_src_roots = ['../../backtrace/src', '../../portable-simd/crates/std_float/src', '../../core/src/primitive_docs.rs'] 93extra_input_roots = [ '../../portable-simd/crates/core_simd/src', '../../stdarch/crates/core_arch/src', '../../core/src'] 94 95# Remove this from std. It will be depended on directly when needed. 96exclude_deps_in_gn = ['profiler_builtins'] 97 98extra_kv = { immediate_abort = true } 99 100[crate.test] 101# test only depends on proc_macro as an internal detail of the Rust build, so 102# it's implicitly included with std/test. However, we list the std crates and 103# construct the sysroot explicitly. We don't need this, and we don't even want 104# it during cross-compiles (since we will only build host proc_macro crates). 105exclude_deps_in_gn = ['proc_macro'] 106 107[crate.unwind] 108# The build script is used to set up the link directives which we skip below. 109# It uses `cc` to run a compiler to do so, which we don't support in build 110# scripts. 111# 112# Suppress link directives since we specify the deps in GN configs. 113extra_kv = { skip_build_rs = true, no_link_directives = true } 114 115[crate.windows-targets] 116# This target is #[no_core] which is incompatible with profiling. 117extra_kv = { include_coverage = false } 118