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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
342 lines
12 KiB
Makefile
342 lines
12 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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# Native libraries built as part of the rust build process
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#
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# This portion of the rust build system is meant to keep track of native
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# dependencies and how to build them. It is currently required that all native
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# dependencies are built as static libraries, as slinging around dynamic
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# libraries isn't exactly the most fun thing to do.
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#
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# This section should need minimal modification to add new libraries. The
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# relevant variables are:
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#
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# NATIVE_LIBS
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# This is a list of all native libraries which are built as part of the
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# build process. It will build all libraries into RT_OUTPUT_DIR with the
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# appropriate name of static library as dictated by the target platform
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#
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# NATIVE_DEPS_<lib>
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# This is a list of files relative to the src/rt directory which are
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# needed to build the native library. Each file will be compiled to an
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# object file, and then all the object files will be assembled into an
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# archive (static library). The list contains files of any extension
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#
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# If adding a new library, you should update the NATIVE_LIBS list, and then list
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# the required files below it. The list of required files is a list of files
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# that's per-target so you're allowed to conditionally add files based on the
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# target.
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################################################################################
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NATIVE_LIBS := rust_builtin hoedown miniz rust_test_helpers
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# $(1) is the target triple
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define NATIVE_LIBRARIES
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NATIVE_DEPS_hoedown_$(1) := hoedown/src/autolink.c \
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hoedown/src/buffer.c \
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hoedown/src/document.c \
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hoedown/src/escape.c \
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hoedown/src/html.c \
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hoedown/src/html_blocks.c \
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hoedown/src/html_smartypants.c \
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hoedown/src/stack.c \
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hoedown/src/version.c
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NATIVE_DEPS_miniz_$(1) = miniz.c
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NATIVE_DEPS_rust_builtin_$(1) := rust_builtin.c \
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rust_android_dummy.c
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NATIVE_DEPS_rust_test_helpers_$(1) := rust_test_helpers.c
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################################################################################
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# You shouldn't find it that necessary to edit anything below this line.
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################################################################################
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# While we're defining the native libraries for each target, we define some
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# common rules used to build files for various targets.
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RT_OUTPUT_DIR_$(1) := $(1)/rt
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$$(RT_OUTPUT_DIR_$(1))/%.o: $(S)src/rt/%.c $$(MKFILE_DEPS)
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@mkdir -p $$(@D)
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@$$(call E, compile: $$@)
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$$(Q)$$(call CFG_COMPILE_C_$(1), $$@, \
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$$(call CFG_CC_INCLUDE_$(1),$$(S)src/rt/hoedown/src) \
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$$(call CFG_CC_INCLUDE_$(1),$$(S)src/rt) \
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$$(RUNTIME_CFLAGS_$(1))) $$<
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$$(RT_OUTPUT_DIR_$(1))/%.o: $(S)src/rt/%.S $$(MKFILE_DEPS) \
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$$(LLVM_CONFIG_$$(CFG_BUILD))
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@mkdir -p $$(@D)
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@$$(call E, compile: $$@)
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$$(Q)$$(call CFG_ASSEMBLE_$(1),$$@,$$<)
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# On MSVC targets the compiler's default include path (e.g. where to find system
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# headers) is specified by the INCLUDE environment variable. This may not be set
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# so the ./configure script scraped the relevant values and this is the location
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# that we put them into cl.exe's environment.
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ifeq ($$(findstring msvc,$(1)),msvc)
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$$(RT_OUTPUT_DIR_$(1))/%.o: \
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export INCLUDE := $$(CFG_MSVC_INCLUDE_PATH_$$(HOST_$(1)))
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$(1)/rustllvm/%.o: \
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export INCLUDE := $$(CFG_MSVC_INCLUDE_PATH_$$(HOST_$(1)))
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endif
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endef
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$(foreach target,$(CFG_TARGET),$(eval $(call NATIVE_LIBRARIES,$(target))))
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# A macro for devining how to build third party libraries listed above (based
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# on their dependencies).
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#
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# $(1) is the target
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# $(2) is the lib name
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define THIRD_PARTY_LIB
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OBJS_$(2)_$(1) := $$(NATIVE_DEPS_$(2)_$(1):%=$$(RT_OUTPUT_DIR_$(1))/%)
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OBJS_$(2)_$(1) := $$(OBJS_$(2)_$(1):.c=.o)
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OBJS_$(2)_$(1) := $$(OBJS_$(2)_$(1):.cpp=.o)
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OBJS_$(2)_$(1) := $$(OBJS_$(2)_$(1):.S=.o)
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NATIVE_$(2)_$(1) := $$(call CFG_STATIC_LIB_NAME_$(1),$(2))
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$$(RT_OUTPUT_DIR_$(1))/$$(NATIVE_$(2)_$(1)): $$(OBJS_$(2)_$(1))
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@$$(call E, link: $$@)
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$$(Q)$$(call CFG_CREATE_ARCHIVE_$(1),$$@) $$^
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endef
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$(foreach target,$(CFG_TARGET), \
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$(eval $(call RUNTIME_RULES,$(target))))
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$(foreach lib,$(NATIVE_LIBS), \
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$(foreach target,$(CFG_TARGET), \
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$(eval $(call THIRD_PARTY_LIB,$(target),$(lib)))))
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################################################################################
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# Building third-party targets with external build systems
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#
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# This location is meant for dependencies which have external build systems. It
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# is still assumed that the output of each of these steps is a static library
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# in the correct location.
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################################################################################
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define DEF_THIRD_PARTY_TARGETS
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# $(1) is the target triple
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ifeq ($$(CFG_WINDOWSY_$(1)), 1)
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# This isn't necessarily a desired option, but it's harmless and works around
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# what appears to be a mingw-w64 bug.
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#
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# https://sourceforge.net/p/mingw-w64/bugs/395/
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JEMALLOC_ARGS_$(1) := --enable-lazy-lock
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else ifeq ($(OSTYPE_$(1)), apple-ios)
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JEMALLOC_ARGS_$(1) := --disable-tls
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else ifeq ($(findstring android, $(OSTYPE_$(1))), android)
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JEMALLOC_ARGS_$(1) := --disable-tls
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endif
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ifdef CFG_ENABLE_DEBUG_JEMALLOC
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JEMALLOC_ARGS_$(1) += --enable-debug --enable-fill
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endif
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################################################################################
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# jemalloc
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################################################################################
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ifdef CFG_ENABLE_FAST_MAKE
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JEMALLOC_DEPS := $(S)/.gitmodules
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else
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JEMALLOC_DEPS := $(wildcard \
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$(S)src/jemalloc/* \
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$(S)src/jemalloc/*/* \
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$(S)src/jemalloc/*/*/* \
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$(S)src/jemalloc/*/*/*/*)
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endif
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# See #17183 for details, this file is touched during the build process so we
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# don't want to consider it as a dependency.
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JEMALLOC_DEPS := $(filter-out $(S)src/jemalloc/VERSION,$(JEMALLOC_DEPS))
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JEMALLOC_NAME_$(1) := $$(call CFG_STATIC_LIB_NAME_$(1),jemalloc)
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ifeq ($$(CFG_WINDOWSY_$(1)),1)
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JEMALLOC_REAL_NAME_$(1) := $$(call CFG_STATIC_LIB_NAME_$(1),jemalloc_s)
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else
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JEMALLOC_REAL_NAME_$(1) := $$(call CFG_STATIC_LIB_NAME_$(1),jemalloc_pic)
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endif
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JEMALLOC_LIB_$(1) := $$(RT_OUTPUT_DIR_$(1))/$$(JEMALLOC_NAME_$(1))
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JEMALLOC_BUILD_DIR_$(1) := $$(RT_OUTPUT_DIR_$(1))/jemalloc
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JEMALLOC_LOCAL_$(1) := $$(JEMALLOC_BUILD_DIR_$(1))/lib/$$(JEMALLOC_REAL_NAME_$(1))
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$$(JEMALLOC_LOCAL_$(1)): $$(JEMALLOC_DEPS) $$(MKFILE_DEPS)
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@$$(call E, make: jemalloc)
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cd "$$(JEMALLOC_BUILD_DIR_$(1))"; "$(S)src/jemalloc/configure" \
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$$(JEMALLOC_ARGS_$(1)) --with-jemalloc-prefix=je_ $(CFG_JEMALLOC_FLAGS) \
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--build=$$(CFG_GNU_TRIPLE_$(CFG_BUILD)) --host=$$(CFG_GNU_TRIPLE_$(1)) \
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CC="$$(CC_$(1)) $$(CFG_JEMALLOC_CFLAGS_$(1))" \
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AR="$$(AR_$(1))" \
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RANLIB="$$(AR_$(1)) s" \
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CPPFLAGS="-I $(S)src/rt/" \
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EXTRA_CFLAGS="-g1 -ffunction-sections -fdata-sections"
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$$(Q)$$(MAKE) -C "$$(JEMALLOC_BUILD_DIR_$(1))" build_lib_static
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ifeq ($(1),$$(CFG_BUILD))
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ifneq ($$(CFG_JEMALLOC_ROOT),)
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$$(JEMALLOC_LIB_$(1)): $$(CFG_JEMALLOC_ROOT)/libjemalloc_pic.a
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@$$(call E, copy: jemalloc)
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$$(Q)cp $$< $$@
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else
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$$(JEMALLOC_LIB_$(1)): $$(JEMALLOC_LOCAL_$(1))
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$$(Q)cp $$< $$@
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endif
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else
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$$(JEMALLOC_LIB_$(1)): $$(JEMALLOC_LOCAL_$(1))
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$$(Q)cp $$< $$@
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endif
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################################################################################
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# compiler-rt
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################################################################################
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ifdef CFG_ENABLE_FAST_MAKE
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COMPRT_DEPS := $(S)/.gitmodules
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else
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COMPRT_DEPS := $(wildcard \
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$(S)src/compiler-rt/* \
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$(S)src/compiler-rt/*/* \
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$(S)src/compiler-rt/*/*/* \
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$(S)src/compiler-rt/*/*/*/*)
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endif
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COMPRT_NAME_$(1) := $$(call CFG_STATIC_LIB_NAME_$(1),compiler-rt)
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COMPRT_LIB_$(1) := $$(RT_OUTPUT_DIR_$(1))/$$(COMPRT_NAME_$(1))
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COMPRT_BUILD_DIR_$(1) := $$(RT_OUTPUT_DIR_$(1))/compiler-rt
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# Note that on MSVC-targeting builds we hardwire CC/AR to gcc/ar even though
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# we're targeting MSVC. This is because although compiler-rt has a CMake build
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# config I can't actually figure out how to use it, so I'm not sure how to use
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# cl.exe to build the objects. Additionally, the compiler-rt library when built
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# with gcc has the same ABI as cl.exe, so they're largely compatible
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COMPRT_CC_$(1) := $$(CC_$(1))
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COMPRT_AR_$(1) := $$(AR_$(1))
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COMPRT_CFLAGS_$(1) := $$(CFG_GCCISH_CFLAGS_$(1))
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ifeq ($$(findstring msvc,$(1)),msvc)
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COMPRT_CC_$(1) := gcc
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COMPRT_AR_$(1) := ar
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ifeq ($$(findstring i686,$(1)),i686)
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COMPRT_CFLAGS_$(1) := $$(CFG_GCCISH_CFLAGS_$(1)) -m32
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else
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COMPRT_CFLAGS_$(1) := $$(CFG_GCCISH_CFLAGS_$(1)) -m64
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endif
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endif
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$$(COMPRT_LIB_$(1)): $$(COMPRT_DEPS) $$(MKFILE_DEPS)
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@$$(call E, make: compiler-rt)
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$$(Q)$$(MAKE) -C "$(S)src/compiler-rt" \
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ProjSrcRoot="$(S)src/compiler-rt" \
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ProjObjRoot="$$(abspath $$(COMPRT_BUILD_DIR_$(1)))" \
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CC='$$(COMPRT_CC_$(1))' \
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AR='$$(COMPRT_AR_$(1))' \
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RANLIB='$$(COMPRT_AR_$(1)) s' \
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CFLAGS="$$(COMPRT_CFLAGS_$(1))" \
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TargetTriple=$(1) \
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triple-builtins
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$$(Q)cp $$(COMPRT_BUILD_DIR_$(1))/triple/builtins/libcompiler_rt.a $$@
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################################################################################
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# libbacktrace
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#
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# We use libbacktrace on linux to get symbols in backtraces, but only on linux.
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# Elsewhere we use other system utilities, so this library is only built on
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# linux.
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################################################################################
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BACKTRACE_NAME_$(1) := $$(call CFG_STATIC_LIB_NAME_$(1),backtrace)
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BACKTRACE_LIB_$(1) := $$(RT_OUTPUT_DIR_$(1))/$$(BACKTRACE_NAME_$(1))
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BACKTRACE_BUILD_DIR_$(1) := $$(RT_OUTPUT_DIR_$(1))/libbacktrace
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# We don't use this on platforms that aren't linux-based, so just make the file
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# available, the compilation of libstd won't actually build it.
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ifeq ($$(findstring darwin,$$(OSTYPE_$(1))),darwin)
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# See comment above
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$$(BACKTRACE_LIB_$(1)):
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touch $$@
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else
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ifeq ($$(findstring ios,$$(OSTYPE_$(1))),ios)
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# See comment above
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$$(BACKTRACE_LIB_$(1)):
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touch $$@
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else
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ifeq ($$(CFG_WINDOWSY_$(1)),1)
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# See comment above
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$$(BACKTRACE_LIB_$(1)):
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touch $$@
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else
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ifdef CFG_ENABLE_FAST_MAKE
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BACKTRACE_DEPS := $(S)/.gitmodules
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else
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BACKTRACE_DEPS := $(wildcard $(S)src/libbacktrace/*)
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endif
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# We need to export CFLAGS because otherwise it doesn't pick up cross compile
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# builds. If libbacktrace doesn't realize this, it will attempt to read 64-bit
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# elf headers when compiled for a 32-bit system, yielding blank backtraces.
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#
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# This also removes the -Werror flag specifically to prevent errors during
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# configuration.
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#
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# Down below you'll also see echos into the config.h generated by the
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# ./configure script. This is done to force libbacktrace to *not* use the
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# atomic/sync functionality because it pulls in unnecessary dependencies and we
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# never use it anyway.
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$$(BACKTRACE_BUILD_DIR_$(1))/Makefile: $$(BACKTRACE_DEPS) $$(MKFILE_DEPS)
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@$$(call E, configure: libbacktrace for $(1))
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$$(Q)rm -rf $$(BACKTRACE_BUILD_DIR_$(1))
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$$(Q)mkdir -p $$(BACKTRACE_BUILD_DIR_$(1))
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$$(Q)(cd $$(BACKTRACE_BUILD_DIR_$(1)) && \
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CC="$$(CC_$(1))" \
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AR="$$(AR_$(1))" \
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RANLIB="$$(AR_$(1)) s" \
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CFLAGS="$$(CFG_GCCISH_CFLAGS_$(1):-Werror=) -fno-stack-protector" \
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$(S)src/libbacktrace/configure --target=$(1) --host=$(CFG_BUILD))
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$$(Q)echo '#undef HAVE_ATOMIC_FUNCTIONS' >> \
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$$(BACKTRACE_BUILD_DIR_$(1))/config.h
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$$(Q)echo '#undef HAVE_SYNC_FUNCTIONS' >> \
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$$(BACKTRACE_BUILD_DIR_$(1))/config.h
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$$(BACKTRACE_LIB_$(1)): $$(BACKTRACE_BUILD_DIR_$(1))/Makefile $$(MKFILE_DEPS)
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@$$(call E, make: libbacktrace)
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$$(Q)$$(MAKE) -C $$(BACKTRACE_BUILD_DIR_$(1)) \
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INCDIR=$(S)src/libbacktrace
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$$(Q)cp $$(BACKTRACE_BUILD_DIR_$(1))/.libs/libbacktrace.a $$@
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endif # endif for windowsy
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endif # endif for ios
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endif # endif for darwin
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################################################################################
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# libc/libunwind for musl
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#
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# When we're building a musl-like target we're going to link libc/libunwind
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# statically into the standard library and liblibc, so we need to make sure
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# they're in a location that we can find
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################################################################################
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ifeq ($$(findstring musl,$(1)),musl)
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$$(RT_OUTPUT_DIR_$(1))/%: $$(CFG_MUSL_ROOT)/lib/%
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cp $$^ $$@
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endif
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endef
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# Instantiate template for all stages/targets
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$(foreach target,$(CFG_TARGET), \
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$(eval $(call DEF_THIRD_PARTY_TARGETS,$(target))))
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