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This commit is an implementation of [RFC 1513] which allows applications to alter the behavior of panics at compile time. A new compiler flag, `-C panic`, is added and accepts the values `unwind` or `panic`, with the default being `unwind`. This model affects how code is generated for the local crate, skipping generation of landing pads with `-C panic=abort`. [RFC 1513]: https://github.com/rust-lang/rfcs/blob/master/text/1513-less-unwinding.md Panic implementations are then provided by crates tagged with `#![panic_runtime]` and lazily required by crates with `#![needs_panic_runtime]`. The panic strategy (`-C panic` value) of the panic runtime must match the final product, and if the panic strategy is not `abort` then the entire DAG must have the same panic strategy. With the `-C panic=abort` strategy, users can expect a stable method to disable generation of landing pads, improving optimization in niche scenarios, decreasing compile time, and decreasing output binary size. With the `-C panic=unwind` strategy users can expect the existing ability to isolate failure in Rust code from the outside world. Organizationally, this commit dismantles the `sys_common::unwind` module in favor of some bits moving part of it to `libpanic_unwind` and the rest into the `panicking` module in libstd. The custom panic runtime support is pretty similar to the custom allocator support with the only major difference being how the panic runtime is injected (takes the `-C panic` flag into account).
223 lines
8.5 KiB
Makefile
223 lines
8.5 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 term \
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getopts collections test rand \
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core alloc \
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rustc_unicode rustc_bitflags \
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alloc_system alloc_jemalloc \
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panic_abort panic_unwind unwind
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RUSTC_CRATES := rustc rustc_typeck rustc_mir 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 rustc_platform_intrinsics \
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rustc_plugin rustc_metadata rustc_passes rustc_save_analysis \
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rustc_const_eval rustc_const_math rustc_incremental
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HOST_CRATES := syntax syntax_ext $(RUSTC_CRATES) rustdoc fmt_macros \
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flate arena graphviz rbml log serialize
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TOOLS := compiletest rustdoc rustc rustbook error_index_generator
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DEPS_core :=
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DEPS_alloc := core libc alloc_system
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DEPS_alloc_system := core libc
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DEPS_alloc_jemalloc := core libc native:jemalloc
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DEPS_collections := core alloc rustc_unicode
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DEPS_libc := core
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DEPS_rand := core
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DEPS_rustc_bitflags := core
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DEPS_rustc_unicode := core
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DEPS_panic_abort := libc alloc
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DEPS_panic_unwind := libc alloc unwind
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DEPS_unwind := libc
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# FIXME(stage0): change this to just `RUSTFLAGS_panic_abort := ...`
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RUSTFLAGS1_panic_abort := -C panic=abort
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RUSTFLAGS2_panic_abort := -C panic=abort
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RUSTFLAGS3_panic_abort := -C panic=abort
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DEPS_std := core libc rand alloc collections rustc_unicode \
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native:backtrace \
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alloc_system panic_abort panic_unwind unwind
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DEPS_arena := std
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DEPS_glob := std
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DEPS_flate := std native:miniz
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DEPS_fmt_macros = std
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DEPS_getopts := std
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DEPS_graphviz := std
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DEPS_log := std
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DEPS_num := std
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DEPS_rbml := std log serialize
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DEPS_serialize := std log
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DEPS_term := std
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DEPS_test := std getopts term native:rust_test_helpers
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DEPS_syntax := std term serialize log arena libc rustc_bitflags rustc_unicode
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DEPS_syntax_ext := syntax fmt_macros
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DEPS_rustc_const_math := std syntax log serialize
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DEPS_rustc_const_eval := rustc_const_math rustc syntax log serialize \
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rustc_back graphviz
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DEPS_rustc := syntax fmt_macros flate arena serialize getopts rbml \
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log graphviz rustc_llvm rustc_back rustc_data_structures\
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rustc_const_math
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DEPS_rustc_back := std syntax flate log libc
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DEPS_rustc_borrowck := rustc rustc_mir log graphviz syntax
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DEPS_rustc_data_structures := std log serialize
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DEPS_rustc_driver := arena flate getopts graphviz libc rustc rustc_back rustc_borrowck \
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rustc_typeck rustc_mir rustc_resolve log syntax serialize rustc_llvm \
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rustc_trans rustc_privacy rustc_lint rustc_plugin \
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rustc_metadata syntax_ext rustc_passes rustc_save_analysis rustc_const_eval \
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rustc_incremental
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DEPS_rustc_lint := rustc log syntax rustc_const_eval
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DEPS_rustc_llvm := native:rustllvm libc std rustc_bitflags
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DEPS_rustc_metadata := rustc syntax rbml rustc_const_math
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DEPS_rustc_passes := syntax rustc core rustc_const_eval
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DEPS_rustc_mir := rustc syntax rustc_const_math rustc_const_eval rustc_bitflags
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DEPS_rustc_resolve := arena rustc log syntax
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DEPS_rustc_platform_intrinsics := std
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DEPS_rustc_plugin := rustc rustc_metadata syntax rustc_mir
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DEPS_rustc_privacy := rustc log syntax
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DEPS_rustc_trans := arena flate getopts graphviz libc rustc rustc_back rustc_mir \
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log syntax serialize rustc_llvm rustc_platform_intrinsics \
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rustc_const_math rustc_const_eval rustc_incremental
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DEPS_rustc_incremental := rbml rustc serialize rustc_data_structures
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DEPS_rustc_save_analysis := rustc log syntax serialize
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DEPS_rustc_typeck := rustc syntax rustc_platform_intrinsics rustc_const_math \
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rustc_const_eval
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DEPS_rustdoc := rustc rustc_driver native:hoedown serialize getopts \
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test rustc_lint rustc_const_eval
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TOOL_DEPS_compiletest := test getopts log serialize
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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/tools/compiletest/src/main.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/tools/rustbook/main.rs
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TOOL_SOURCE_error_index_generator := $(S)src/tools/error_index_generator/main.rs
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ONLY_RLIB_core := 1
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ONLY_RLIB_libc := 1
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ONLY_RLIB_alloc := 1
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ONLY_RLIB_rand := 1
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ONLY_RLIB_collections := 1
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ONLY_RLIB_rustc_unicode := 1
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ONLY_RLIB_rustc_bitflags := 1
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ONLY_RLIB_alloc_system := 1
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ONLY_RLIB_alloc_jemalloc := 1
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ONLY_RLIB_panic_unwind := 1
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ONLY_RLIB_panic_abort := 1
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ONLY_RLIB_unwind := 1
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TARGET_SPECIFIC_alloc_jemalloc := 1
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# Documented-by-default crates
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DOC_CRATES := std alloc collections core libc rustc_unicode
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ifeq ($(CFG_DISABLE_JEMALLOC),)
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RUSTFLAGS_rustc_back := --cfg 'feature="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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NATIVE_DEPS_$(1) := $$(patsubst native:%,%,$$(filter native:%,$$(DEPS_$(1))))
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endef
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$(foreach crate,$(CRATES),$(eval $(call RUST_CRATE,$(crate))))
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# $(1) - crate
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# $(2) - target
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define RUST_CRATE_DEPS
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RUST_DEPS_$(1)_T_$(2) := $$(filter-out native:%,$$(DEPS_$(1)))
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endef
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$(foreach target,$(CFG_TARGET),\
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$(foreach crate,$(CRATES),$(eval $(call RUST_CRATE_DEPS,$(crate),$(target)))))
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# $(1) - target
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# $(2) - crate
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define DEFINE_TARGET_CRATES
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ifndef TARGET_SPECIFIC_$(2)
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TARGET_CRATES_$(1) += $(2)
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endif
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endef
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$(foreach target,$(CFG_TARGET),\
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$(foreach crate,$(TARGET_CRATES),\
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$(eval $(call DEFINE_TARGET_CRATES,$(target),$(crate)))))
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# Similar to the macro above for crates, this macro is for tools
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#
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# $(1) is the crate to generate variables for
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define RUST_TOOL
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TOOL_INPUTS_$(1) := $$(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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CRATEFILE_libc := $(SREL)src/liblibc/src/lib.rs
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RUSTFLAGS_libc := --cfg stdbuild
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