所以我想设置 Rust 编译器使用的作业数量,我听说应该把它放在 config.toml 中。此外,config.toml 应该放在:
$CARGO_HOME/config.toml 默认为:
Windows: %USERPROFILE%\.cargo\config.toml
Unix: $HOME/.cargo/config.toml
我所拥有的最接近的东西是三个这样的文件名:
/home/myname/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cfg-expr-0.15.8/.cargo/config.toml
不是那个吧?我的理解是,Cargo 会在当前目录中查找 config.toml 文件,然后递归向上搜索一个文件夹,直到到达根目录。我甚至不知道它在用什么,因为我没有看到名为 config.toml 的文件,而且系统范围的搜索只显示了我上面粘贴的内容。这个 config.toml 文件在哪里?其中两个 config.toml 文件非常小,设置了几个标志,然后 cfg-expr-0.15.8/.cargo 下的那个文件看起来像这样:
[target.'cfg(all())']
rustflags = [
# BEGIN - Embark standard lints v6 for Rust 1.55+
# do not change or add/remove here, but one can add exceptions after this section
# for more info see: <https://github.com/EmbarkStudios/rust-ecosystem/issues/59>
"-Dunsafe_code",
"-Wclippy::all",
"-Wclippy::await_holding_lock",
"-Wclippy::char_lit_as_u8",
"-Wclippy::checked_conversions",
"-Wclippy::dbg_macro",
"-Wclippy::debug_assert_with_mut_call",
"-Wclippy::doc_markdown",
"-Wclippy::empty_enum",
"-Wclippy::enum_glob_use",
"-Wclippy::exit",
"-Wclippy::expl_impl_clone_on_copy",
"-Wclippy::explicit_deref_methods",
"-Wclippy::explicit_into_iter_loop",
"-Wclippy::fallible_impl_from",
"-Wclippy::filter_map_next",
"-Wclippy::flat_map_option",
"-Wclippy::float_cmp_const",
"-Wclippy::fn_params_excessive_bools",
"-Wclippy::from_iter_instead_of_collect",
"-Wclippy::if_let_mutex",
"-Wclippy::implicit_clone",
"-Wclippy::imprecise_flops",
"-Wclippy::inefficient_to_string",
"-Wclippy::invalid_upcast_comparisons",
"-Wclippy::large_digit_groups",
"-Wclippy::large_stack_arrays",
"-Wclippy::large_types_passed_by_value",
"-Wclippy::let_unit_value",
"-Wclippy::linkedlist",
"-Wclippy::lossy_float_literal",
"-Wclippy::macro_use_imports",
"-Wclippy::manual_ok_or",
"-Wclippy::map_err_ignore",
"-Wclippy::map_flatten",
"-Wclippy::map_unwrap_or",
"-Wclippy::match_on_vec_items",
"-Wclippy::match_same_arms",
"-Wclippy::match_wild_err_arm",
"-Wclippy::match_wildcard_for_single_variants",
"-Wclippy::mem_forget",
"-Wclippy::mismatched_target_os",
"-Wclippy::missing_enforced_import_renames",
"-Wclippy::mut_mut",
"-Wclippy::mutex_integer",
"-Wclippy::needless_borrow",
"-Wclippy::needless_continue",
"-Wclippy::needless_for_each",
"-Wclippy::option_option",
"-Wclippy::path_buf_push_overwrite",
"-Wclippy::ptr_as_ptr",
"-Wclippy::rc_mutex",
"-Wclippy::ref_option_ref",
"-Wclippy::rest_pat_in_fully_bound_structs",
"-Wclippy::same_functions_in_if_condition",
"-Wclippy::semicolon_if_nothing_returned",
"-Wclippy::single_match_else",
"-Wclippy::string_add_assign",
"-Wclippy::string_add",
"-Wclippy::string_lit_as_bytes",
"-Wclippy::string_to_string",
"-Wclippy::todo",
"-Wclippy::trait_duplication_in_bounds",
"-Wclippy::unimplemented",
"-Wclippy::unnested_or_patterns",
"-Wclippy::unused_self",
"-Wclippy::useless_transmute",
"-Wclippy::verbose_file_reads",
"-Wclippy::zero_sized_map_values",
"-Wfuture_incompatible",
"-Wnonstandard_style",
"-Wrust_2018_idioms",
# END - Embark standard lints v6 for Rust 1.55+
编辑:好的,我发现 Cargo 还会查找名为“config”而没有“.toml”的文件,在我的 Cargo Home 中没有配置文件,只有一堆“config.yml”和“config.rs”,以及我提到的三个“config.toml”,但不在 Cargo Home 文件夹中,而是在一些冗长的路径中。
您的主路径中的“config.toml”文件(加上“.cargo”)是可选的。
如果您没有并且想要设置某些选项,您只需创建一个。