45bf1ed1a1
This commit is an implementation of [RFC 1183][rfc] which allows swapping out the default allocator on nightly Rust. No new stable surface area should be added as a part of this commit. [rfc]: https://github.com/rust-lang/rfcs/pull/1183 Two new attributes have been added to the compiler: * `#![needs_allocator]` - this is used by liballoc (and likely only liballoc) to indicate that it requires an allocator crate to be in scope. * `#![allocator]` - this is a indicator that the crate is an allocator which can satisfy the `needs_allocator` attribute above. The ABI of the allocator crate is defined to be a set of symbols that implement the standard Rust allocation/deallocation functions. The symbols are not currently checked for exhaustiveness or typechecked. There are also a number of restrictions on these crates: * An allocator crate cannot transitively depend on a crate that is flagged as needing an allocator (e.g. allocator crates can't depend on liballoc). * There can only be one explicitly linked allocator in a final image. * If no allocator is explicitly requested one will be injected on behalf of the compiler. Binaries and Rust dylibs will use jemalloc by default where available and staticlibs/other dylibs will use the system allocator by default. Two allocators are provided by the distribution by default, `alloc_system` and `alloc_jemalloc` which operate as advertised. Closes #27389
170 lines
6.4 KiB
Makefile
170 lines
6.4 KiB
Makefile
# Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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# file at the top-level directory of this distribution and at
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# http://rust-lang.org/COPYRIGHT.
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#
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# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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# option. This file may not be copied, modified, or distributed
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# except according to those terms.
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################################################################################
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# Rust's standard distribution of crates and tools
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#
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# The crates outlined below are the standard distribution of libraries provided
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# in a rust installation. These rules are meant to abstract over the
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# dependencies (both native and rust) of crates and basically generate all the
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# necessary makefile rules necessary to build everything.
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#
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# Here's an explanation of the variables below
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#
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# TARGET_CRATES
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# This list of crates will be built for all targets, including
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# cross-compiled targets
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#
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# HOST_CRATES
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# This list of crates will be compiled for only host targets. Note that
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# this set is explicitly *not* a subset of TARGET_CRATES, but rather it is
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# a disjoint set. Nothing in the TARGET_CRATES set can depend on crates in
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# the HOST_CRATES set, but the HOST_CRATES set can depend on target
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# crates.
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#
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# TOOLS
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# A list of all tools which will be built as part of the compilation
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# process. It is currently assumed that most tools are built through
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# src/driver/driver.rs with a particular configuration (there's a
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# corresponding library providing the implementation)
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#
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# DEPS_<crate>
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# These lists are the dependencies of the <crate> that is to be built.
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# Rust dependencies are listed bare (i.e. std) and native
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# dependencies have a "native:" prefix (i.e. native:hoedown). All deps
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# will be built before the crate itself is built.
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#
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# TOOL_DEPS_<tool>/TOOL_SOURCE_<tool>
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# Similar to the DEPS variable, this is the library crate dependencies
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# list for tool as well as the source file for the specified tool
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#
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# You shouldn't need to modify much other than these variables. Crates are
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# automatically generated for all stage/host/target combinations.
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################################################################################
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TARGET_CRATES := libc std flate arena term \
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serialize getopts collections test rand \
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log graphviz core rbml alloc \
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rustc_unicode rustc_bitflags \
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alloc_system
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RUSTC_CRATES := rustc rustc_typeck rustc_borrowck rustc_resolve rustc_driver \
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rustc_trans rustc_back rustc_llvm rustc_privacy rustc_lint \
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rustc_data_structures
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HOST_CRATES := syntax $(RUSTC_CRATES) rustdoc fmt_macros
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TOOLS := compiletest rustdoc rustc rustbook error-index-generator
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DEPS_core :=
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DEPS_libc := core
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DEPS_rustc_unicode := core
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DEPS_alloc := core libc alloc_system
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DEPS_std := core libc rand alloc collections rustc_unicode \
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native:rust_builtin native:backtrace \
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alloc_system
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DEPS_graphviz := std
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DEPS_syntax := std term serialize log fmt_macros arena libc rustc_bitflags
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DEPS_rustc_driver := arena flate getopts graphviz libc rustc rustc_back rustc_borrowck \
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rustc_typeck rustc_resolve log syntax serialize rustc_llvm \
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rustc_trans rustc_privacy rustc_lint
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DEPS_rustc_trans := arena flate getopts graphviz libc rustc rustc_back \
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log syntax serialize rustc_llvm
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DEPS_rustc_typeck := rustc syntax
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DEPS_rustc_borrowck := rustc log graphviz syntax
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DEPS_rustc_resolve := rustc log syntax
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DEPS_rustc_privacy := rustc log syntax
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DEPS_rustc_lint := rustc log syntax
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DEPS_rustc := syntax flate arena serialize getopts rbml \
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log graphviz rustc_llvm rustc_back rustc_data_structures
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DEPS_rustc_llvm := native:rustllvm libc std rustc_bitflags
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DEPS_rustc_back := std syntax rustc_llvm flate log libc
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DEPS_rustc_data_structures := std log serialize
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DEPS_rustdoc := rustc rustc_driver native:hoedown serialize getopts \
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test rustc_lint
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DEPS_rustc_bitflags := core
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DEPS_flate := std native:miniz
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DEPS_arena := std
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DEPS_graphviz := std
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DEPS_glob := std
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DEPS_serialize := std log
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DEPS_rbml := std log serialize
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DEPS_term := std log
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DEPS_getopts := std
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DEPS_collections := core alloc rustc_unicode
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DEPS_num := std
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DEPS_test := std getopts serialize rbml term native:rust_test_helpers
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DEPS_rand := core
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DEPS_log := std
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DEPS_fmt_macros = std
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DEPS_alloc_system := core libc
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TOOL_DEPS_compiletest := test getopts
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TOOL_DEPS_rustdoc := rustdoc
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TOOL_DEPS_rustc := rustc_driver
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TOOL_DEPS_rustbook := std rustdoc
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TOOL_DEPS_error-index-generator := rustdoc syntax serialize
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TOOL_SOURCE_compiletest := $(S)src/compiletest/compiletest.rs
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TOOL_SOURCE_rustdoc := $(S)src/driver/driver.rs
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TOOL_SOURCE_rustc := $(S)src/driver/driver.rs
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TOOL_SOURCE_rustbook := $(S)src/rustbook/main.rs
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TOOL_SOURCE_error-index-generator := $(S)src/error-index-generator/main.rs
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ONLY_RLIB_core := 1
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ONLY_RLIB_libc := 1
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ONLY_RLIB_alloc := 1
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ONLY_RLIB_rand := 1
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ONLY_RLIB_collections := 1
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ONLY_RLIB_rustc_unicode := 1
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ONLY_RLIB_rustc_bitflags := 1
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ONLY_RLIB_alloc_system := 1
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# Documented-by-default crates
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DOC_CRATES := std alloc collections core libc rustc_unicode
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ifeq ($(CFG_DISABLE_JEMALLOC),)
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TARGET_CRATES += alloc_jemalloc
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DEPS_std += alloc_jemalloc
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DEPS_alloc_jemalloc := core libc native:jemalloc
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ONLY_RLIB_alloc_jemalloc := 1
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else
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RUSTFLAGS_rustc_back := --cfg disable_jemalloc
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endif
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################################################################################
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# You should not need to edit below this line
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################################################################################
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CRATES := $(TARGET_CRATES) $(HOST_CRATES)
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# This macro creates some simple definitions for each crate being built, just
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# some munging of all of the parameters above.
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#
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# $(1) is the crate to generate variables for
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define RUST_CRATE
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CRATEFILE_$(1) := $$(SREL)src/lib$(1)/lib.rs
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RSINPUTS_$(1) := $$(call rwildcard,$(S)src/lib$(1)/,*.rs)
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RUST_DEPS_$(1) := $$(filter-out native:%,$$(DEPS_$(1)))
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NATIVE_DEPS_$(1) := $$(patsubst native:%,%,$$(filter native:%,$$(DEPS_$(1))))
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endef
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$(foreach crate,$(CRATES),$(eval $(call RUST_CRATE,$(crate))))
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# Similar to the macro above for crates, this macro is for tools
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#
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# $(1) is the crate to generate variables for
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define RUST_TOOL
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TOOL_INPUTS_$(1) := $$(call rwildcard,$$(dir $$(TOOL_SOURCE_$(1))),*.rs)
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endef
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$(foreach crate,$(TOOLS),$(eval $(call RUST_TOOL,$(crate))))
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ifdef CFG_DISABLE_ELF_TLS
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RUSTFLAGS_std := --cfg no_elf_tls
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endif
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