# Copyright 2012 The Rust Project Developers. See the COPYRIGHT # file at the top-level directory of this distribution and at # http://rust-lang.org/COPYRIGHT. # # Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or # http://www.apache.org/licenses/LICENSE-2.0> or the MIT license # <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your # option. This file may not be copied, modified, or distributed # except according to those terms. # This is the compile-time target-triple for the compiler. For the compiler at # runtime, this should be considered the host-triple. More explanation for why # this exists can be found on issue #2400 export CFG_COMPILER_HOST_TRIPLE # Used as defaults for the runtime ar and cc tools export CFG_DEFAULT_LINKER export CFG_DEFAULT_AR # The standard libraries should be held up to a higher standard than any old # code, make sure that these common warnings are denied by default. These can # be overridden during development temporarily. For stage0, we allow warnings # which may be bugs in stage0 (should be fixed in stage1+) RUST_LIB_FLAGS_ST0 += -W warnings RUST_LIB_FLAGS_ST1 += -D warnings RUST_LIB_FLAGS_ST2 += -D warnings # Macro that generates the full list of dependencies for a crate at a particular # stage/target/host tuple. # # $(1) - stage # $(2) - target # $(3) - host # $(4) crate define RUST_CRATE_FULLDEPS CRATE_FULLDEPS_$(1)_T_$(2)_H_$(3)_$(4) := \ $$(CRATEFILE_$(4)) \ $$(RSINPUTS_$(4)) \ $$(foreach dep,$$(RUST_DEPS_$(4)), \ $$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$$(dep)) \ $$(foreach dep,$$(NATIVE_DEPS_$(4)), \ $$(RT_OUTPUT_DIR_$(2))/$$(call CFG_STATIC_LIB_NAME_$(2),$$(dep))) \ $$(foreach dep,$$(NATIVE_DEPS_$(4)_T_$(2)), \ $$(RT_OUTPUT_DIR_$(2))/$$(dep)) endef $(foreach host,$(CFG_HOST), \ $(foreach target,$(CFG_TARGET), \ $(foreach stage,$(STAGES), \ $(foreach crate,$(CRATES), \ $(eval $(call RUST_CRATE_FULLDEPS,$(stage),$(target),$(host),$(crate))))))) # RUST_TARGET_STAGE_N template: This defines how target artifacts are built # for all stage/target architecture combinations. This is one giant rule which # works as follows: # # 1. The immediate dependencies are the rust source files # 2. Each rust crate dependency is listed (based on their stamp files), # as well as all native dependencies (listed in RT_OUTPUT_DIR) # 3. The stage (n-1) compiler is required through the TSREQ dependency # 4. When actually executing the rule, the first thing we do is to clean out # old libs and rlibs via the REMOVE_ALL_OLD_GLOB_MATCHES macro # 5. Finally, we get around to building the actual crate. It's just one # "small" invocation of the previous stage rustc. We use -L to # RT_OUTPUT_DIR so all the native dependencies are picked up. # Additionally, we pass in the llvm dir so rustc can link against it. # 6. Some cleanup is done (listing what was just built) if verbose is turned # on. # # $(1) is the stage # $(2) is the target triple # $(3) is the host triple # $(4) is the crate name define RUST_TARGET_STAGE_N $$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$(4): CFG_COMPILER_HOST_TRIPLE = $(2) $$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$(4): \ $$(CRATEFILE_$(4)) \ $$(CRATE_FULLDEPS_$(1)_T_$(2)_H_$(3)_$(4)) \ $$(LLVM_CONFIG_$(2)) \ $$(TSREQ$(1)_T_$(2)_H_$(3)) \ | $$(TLIB$(1)_T_$(2)_H_$(3))/ @$$(call E, rustc: $$(@D)/lib$(4)) @touch $$@.start_time $$(call REMOVE_ALL_OLD_GLOB_MATCHES, \ $$(dir $$@)$$(call CFG_LIB_GLOB_$(2),$(4))) $$(call REMOVE_ALL_OLD_GLOB_MATCHES, \ $$(dir $$@)$$(call CFG_RLIB_GLOB,$(4))) $(Q)CFG_LLVM_LINKAGE_FILE=$$(LLVM_LINKAGE_PATH_$(2)) \ $$(subst @,,$$(STAGE$(1)_T_$(2)_H_$(3))) \ $$(RUST_LIB_FLAGS_ST$(1)) \ -L "$$(RT_OUTPUT_DIR_$(2))" \ $$(LLVM_LIBDIR_RUSTFLAGS_$(2)) \ $$(LLVM_STDCPP_RUSTFLAGS_$(2)) \ $$(RUSTFLAGS_$(4)) \ $$(RUSTFLAGS$(1)_$(4)) \ $$(RUSTFLAGS$(1)_$(4)_T_$(2)) \ --out-dir $$(@D) \ -C extra-filename=-$$(CFG_FILENAME_EXTRA) \ $$< @touch -r $$@.start_time $$@ && rm $$@.start_time $$(call LIST_ALL_OLD_GLOB_MATCHES, \ $$(dir $$@)$$(call CFG_LIB_GLOB_$(2),$(4))) $$(call LIST_ALL_OLD_GLOB_MATCHES, \ $$(dir $$@)$$(call CFG_RLIB_GLOB,$(4))) endef # Macro for building any tool as part of the rust compilation process. Each # tool is defined in crates.mk with a list of library dependencies as well as # the source file for the tool. Building each tool will also be passed '--cfg # <tool>' for usage in driver.rs # # This build rule is similar to the one found above, just tweaked for # locations and things. # # $(1) - stage # $(2) - target triple # $(3) - host triple # $(4) - name of the tool being built define TARGET_TOOL $$(TBIN$(1)_T_$(2)_H_$(3))/$(4)$$(X_$(2)): \ $$(TOOL_SOURCE_$(4)) \ $$(TOOL_INPUTS_$(4)) \ $$(foreach dep,$$(TOOL_DEPS_$(4)), \ $$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$$(dep)) \ $$(TSREQ$(1)_T_$(2)_H_$(3)) \ | $$(TBIN$(1)_T_$(2)_H_$(3))/ @$$(call E, rustc: $$@) $$(STAGE$(1)_T_$(2)_H_$(3)) \ $$(LLVM_LIBDIR_RUSTFLAGS_$(2)) \ -o $$@ $$< --cfg $(4) endef # Macro for building runtime startup/shutdown object files; # these are Rust's equivalent of crti.o, crtn.o # # $(1) - stage # $(2) - target triple # $(3) - host triple # $(4) - object basename define TARGET_RUSTRT_STARTUP_OBJ $$(TLIB$(1)_T_$(2)_H_$(3))/$(4).o: \ $(S)src/rtstartup/$(4).rs \ $$(TLIB$(1)_T_$(2)_H_$(3))/stamp.core \ $$(HSREQ$(1)_T_$(2)_H_$(3)) \ | $$(TBIN$(1)_T_$(2)_H_$(3))/ @$$(call E, rustc: $$@) $$(STAGE$(1)_T_$(2)_H_$(3)) --emit=obj -o $$@ $$< ifeq ($$(CFG_RUSTRT_HAS_STARTUP_OBJS_$(2)), 1) # Add dependencies on Rust startup objects to all crates that depend on core. # This ensures that they are built after core (since they depend on it), # but before everything else (since they are needed for linking dylib crates). $$(foreach crate, $$(TARGET_CRATES), \ $$(if $$(findstring core,$$(DEPS_$$(crate))), \ $$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$$(crate))) : $$(TLIB$(1)_T_$(2)_H_$(3))/$(4).o endif endef # Every recipe in RUST_TARGET_STAGE_N outputs to $$(TLIB$(1)_T_$(2)_H_$(3), # a directory that can be cleaned out during the middle of a run of # the get-snapshot.py script. Therefore, every recipe needs to have # an order-only dependency either on $(SNAPSHOT_RUSTC_POST_CLEANUP) or # on $$(TSREQ$(1)_T_$(2)_H_$(3)), to ensure that no products will be # put into the target area until after the get-snapshot.py script has # had its chance to clean it out; otherwise the other products will be # inadvertently included in the clean out. SNAPSHOT_RUSTC_POST_CLEANUP=$(HBIN0_H_$(CFG_BUILD))/rustc$(X_$(CFG_BUILD)) define TARGET_HOST_RULES $$(TLIB$(1)_T_$(2)_H_$(3))/: mkdir -p $$@ $$(TLIB$(1)_T_$(2)_H_$(3))/%: $$(RT_OUTPUT_DIR_$(2))/% \ | $$(TLIB$(1)_T_$(2)_H_$(3))/ $$(SNAPSHOT_RUSTC_POST_CLEANUP) @$$(call E, cp: $$@) $$(Q)cp $$< $$@ endef $(foreach source,$(CFG_HOST), \ $(foreach target,$(CFG_TARGET), \ $(eval $(call TARGET_HOST_RULES,0,$(target),$(source))) \ $(eval $(call TARGET_HOST_RULES,1,$(target),$(source))) \ $(eval $(call TARGET_HOST_RULES,2,$(target),$(source))) \ $(eval $(call TARGET_HOST_RULES,3,$(target),$(source))))) # In principle, each host can build each target for both libs and tools $(foreach crate,$(CRATES), \ $(foreach source,$(CFG_HOST), \ $(foreach target,$(CFG_TARGET), \ $(eval $(call RUST_TARGET_STAGE_N,0,$(target),$(source),$(crate))) \ $(eval $(call RUST_TARGET_STAGE_N,1,$(target),$(source),$(crate))) \ $(eval $(call RUST_TARGET_STAGE_N,2,$(target),$(source),$(crate))) \ $(eval $(call RUST_TARGET_STAGE_N,3,$(target),$(source),$(crate)))))) $(foreach host,$(CFG_HOST), \ $(foreach target,$(CFG_TARGET), \ $(foreach stage,$(STAGES), \ $(foreach tool,$(TOOLS), \ $(eval $(call TARGET_TOOL,$(stage),$(target),$(host),$(tool))))))) $(foreach host,$(CFG_HOST), \ $(foreach target,$(CFG_TARGET), \ $(foreach stage,$(STAGES), \ $(foreach obj,rsbegin rsend, \ $(eval $(call TARGET_RUSTRT_STARTUP_OBJ,$(stage),$(target),$(host),$(obj)))))))