mirror of
https://github.com/rust-lang/rust
synced 2024-09-15 22:50:55 +00:00
ae36d4f72a
This commit modifies the configure script and our makefiles to support building 32-bit MSVC targets. The MSVC toolchain is now parameterized over whether it can produce a 32-bit or 64-bit binary. The configure script was updated to export more variables at configure time, and the makefiles were rejiggered to selectively reexport the relevant environment variables for the applicable targets they're going to run for.
260 lines
9.8 KiB
Makefile
260 lines
9.8 KiB
Makefile
# Copyright 2012 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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# This is the compile-time target-triple for the compiler. For the compiler at
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# runtime, this should be considered the host-triple. More explanation for why
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# this exists can be found on issue #2400
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export CFG_COMPILER_HOST_TRIPLE
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# The standard libraries should be held up to a higher standard than any old
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# code, make sure that these common warnings are denied by default. These can
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# be overridden during development temporarily. For stage0, we allow warnings
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# which may be bugs in stage0 (should be fixed in stage1+)
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RUST_LIB_FLAGS_ST0 += -W warnings
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RUST_LIB_FLAGS_ST1 += -D warnings
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RUST_LIB_FLAGS_ST2 += -D warnings
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# Macro that generates the full list of dependencies for a crate at a particular
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# stage/target/host tuple.
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#
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# $(1) - stage
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# $(2) - target
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# $(3) - host
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# $(4) crate
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define RUST_CRATE_FULLDEPS
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CRATE_FULLDEPS_$(1)_T_$(2)_H_$(3)_$(4) := \
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$$(CRATEFILE_$(4)) \
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$$(RSINPUTS_$(4)) \
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$$(foreach dep,$$(RUST_DEPS_$(4)), \
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$$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$$(dep)) \
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$$(foreach dep,$$(NATIVE_DEPS_$(4)), \
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$$(RT_OUTPUT_DIR_$(2))/$$(call CFG_STATIC_LIB_NAME_$(2),$$(dep))) \
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$$(foreach dep,$$(NATIVE_DEPS_$(4)_T_$(2)), \
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$$(RT_OUTPUT_DIR_$(2))/$$(dep)) \
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$$(foreach dep,$$(NATIVE_TOOL_DEPS_$(4)_T_$(2)), \
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$$(TBIN$(1)_T_$(3)_H_$(3))/$$(dep)) \
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$$(CUSTOM_DEPS_$(4)_T_$(2))
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endef
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$(foreach host,$(CFG_HOST), \
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$(foreach target,$(CFG_TARGET), \
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$(foreach stage,$(STAGES), \
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$(foreach crate,$(CRATES), \
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$(eval $(call RUST_CRATE_FULLDEPS,$(stage),$(target),$(host),$(crate)))))))
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# RUST_TARGET_STAGE_N template: This defines how target artifacts are built
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# for all stage/target architecture combinations. This is one giant rule which
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# works as follows:
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#
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# 1. The immediate dependencies are the rust source files
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# 2. Each rust crate dependency is listed (based on their stamp files),
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# as well as all native dependencies (listed in RT_OUTPUT_DIR)
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# 3. The stage (n-1) compiler is required through the TSREQ dependency, along
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# with the morestack library
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# 4. When actually executing the rule, the first thing we do is to clean out
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# old libs and rlibs via the REMOVE_ALL_OLD_GLOB_MATCHES macro
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# 5. Finally, we get around to building the actual crate. It's just one
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# "small" invocation of the previous stage rustc. We use -L to
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# RT_OUTPUT_DIR so all the native dependencies are picked up.
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# Additionally, we pass in the llvm dir so rustc can link against it.
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# 6. Some cleanup is done (listing what was just built) if verbose is turned
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# on.
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#
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# $(1) is the stage
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# $(2) is the target triple
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# $(3) is the host triple
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# $(4) is the crate name
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define RUST_TARGET_STAGE_N
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$$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$(4): CFG_COMPILER_HOST_TRIPLE = $(2)
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$$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$(4): \
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$$(CRATEFILE_$(4)) \
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$$(CRATE_FULLDEPS_$(1)_T_$(2)_H_$(3)_$(4)) \
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$$(LLVM_CONFIG_$(2)) \
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$$(TSREQ$(1)_T_$(2)_H_$(3)) \
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| $$(TLIB$(1)_T_$(2)_H_$(3))/
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@$$(call E, rustc: $$(@D)/lib$(4))
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@touch $$@.start_time
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$$(call REMOVE_ALL_OLD_GLOB_MATCHES, \
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$$(dir $$@)$$(call CFG_LIB_GLOB_$(2),$(4)))
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$$(call REMOVE_ALL_OLD_GLOB_MATCHES, \
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$$(dir $$@)$$(call CFG_RLIB_GLOB,$(4)))
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$(Q)CFG_LLVM_LINKAGE_FILE=$$(LLVM_LINKAGE_PATH_$(2)) \
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$$(subst @,,$$(STAGE$(1)_T_$(2)_H_$(3))) \
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$$(RUST_LIB_FLAGS_ST$(1)) \
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-L "$$(RT_OUTPUT_DIR_$(2))" \
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$$(LLVM_LIBDIR_RUSTFLAGS_$(2)) \
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$$(LLVM_STDCPP_RUSTFLAGS_$(2)) \
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$$(RUSTFLAGS_$(4)) \
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$$(RUSTFLAGS_$(4)_T_$(2)) \
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--out-dir $$(@D) \
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-C extra-filename=-$$(CFG_FILENAME_EXTRA) \
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$$<
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@touch -r $$@.start_time $$@ && rm $$@.start_time
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$$(call LIST_ALL_OLD_GLOB_MATCHES, \
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$$(dir $$@)$$(call CFG_LIB_GLOB_$(2),$(4)))
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$$(call LIST_ALL_OLD_GLOB_MATCHES, \
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$$(dir $$@)$$(call CFG_RLIB_GLOB,$(4)))
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endef
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# Macro for building any tool as part of the rust compilation process. Each
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# tool is defined in crates.mk with a list of library dependencies as well as
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# the source file for the tool. Building each tool will also be passed '--cfg
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# <tool>' for usage in driver.rs
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#
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# This build rule is similar to the one found above, just tweaked for
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# locations and things.
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#
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# $(1) - stage
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# $(2) - target triple
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# $(3) - host triple
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# $(4) - name of the tool being built
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define TARGET_TOOL
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$$(TBIN$(1)_T_$(2)_H_$(3))/$(4)$$(X_$(2)): \
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$$(TOOL_SOURCE_$(4)) \
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$$(TOOL_INPUTS_$(4)) \
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$$(foreach dep,$$(TOOL_DEPS_$(4)), \
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$$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$$(dep)) \
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$$(TSREQ$(1)_T_$(2)_H_$(3)) \
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| $$(TBIN$(1)_T_$(2)_H_$(3))/
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@$$(call E, rustc: $$@)
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$$(STAGE$(1)_T_$(2)_H_$(3)) -o $$@ $$< --cfg $(4)
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endef
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# Every recipe in RUST_TARGET_STAGE_N outputs to $$(TLIB$(1)_T_$(2)_H_$(3),
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# a directory that can be cleaned out during the middle of a run of
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# the get-snapshot.py script. Therefore, every recipe needs to have
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# an order-only dependency either on $(SNAPSHOT_RUSTC_POST_CLEANUP) or
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# on $$(TSREQ$(1)_T_$(2)_H_$(3)), to ensure that no products will be
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# put into the target area until after the get-snapshot.py script has
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# had its chance to clean it out; otherwise the other products will be
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# inadvertently included in the clean out.
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SNAPSHOT_RUSTC_POST_CLEANUP=$(HBIN0_H_$(CFG_BUILD))/rustc$(X_$(CFG_BUILD))
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define TARGET_HOST_RULES
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$$(TBIN$(1)_T_$(2)_H_$(3))/:
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mkdir -p $$@
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$$(TLIB$(1)_T_$(2)_H_$(3))/:
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mkdir -p $$@
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$$(TLIB$(1)_T_$(2)_H_$(3))/%: $$(RT_OUTPUT_DIR_$(2))/% \
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| $$(TLIB$(1)_T_$(2)_H_$(3))/ $$(SNAPSHOT_RUSTC_POST_CLEANUP)
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@$$(call E, cp: $$@)
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$$(Q)cp $$< $$@
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$$(TBIN$(1)_T_$(2)_H_$(3))/%: $$(CFG_LLVM_INST_DIR_$(2))/bin/% \
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| $$(TBIN$(1)_T_$(2)_H_$(3))/ $$(SNAPSHOT_RUSTC_POST_CLEANUP)
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@$$(call E, cp: $$@)
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$$(Q)cp $$< $$@
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endef
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$(foreach source,$(CFG_HOST), \
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$(foreach target,$(CFG_TARGET), \
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$(eval $(call TARGET_HOST_RULES,0,$(target),$(source))) \
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$(eval $(call TARGET_HOST_RULES,1,$(target),$(source))) \
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$(eval $(call TARGET_HOST_RULES,2,$(target),$(source))) \
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$(eval $(call TARGET_HOST_RULES,3,$(target),$(source)))))
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# In principle, each host can build each target for both libs and tools
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$(foreach crate,$(CRATES), \
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$(foreach source,$(CFG_HOST), \
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$(foreach target,$(CFG_TARGET), \
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$(eval $(call RUST_TARGET_STAGE_N,0,$(target),$(source),$(crate))) \
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$(eval $(call RUST_TARGET_STAGE_N,1,$(target),$(source),$(crate))) \
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$(eval $(call RUST_TARGET_STAGE_N,2,$(target),$(source),$(crate))) \
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$(eval $(call RUST_TARGET_STAGE_N,3,$(target),$(source),$(crate))))))
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$(foreach host,$(CFG_HOST), \
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$(foreach target,$(CFG_TARGET), \
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$(foreach stage,$(STAGES), \
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$(foreach tool,$(TOOLS), \
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$(eval $(call TARGET_TOOL,$(stage),$(target),$(host),$(tool)))))))
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# We have some triples which are bootstrapped from other triples, and this means
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# that we need to fixup some of the native tools that a triple depends on.
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#
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# For example, MSVC requires the llvm-ar.exe executable to manage archives, but
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# it bootstraps from the GNU Windows triple. This means that the compiler will
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# add this directory to PATH when executing new processes:
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#
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# $SYSROOT/rustlib/x86_64-pc-windows-gnu/bin
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#
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# Unfortunately, however, the GNU triple is not known about in stage0, so the
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# tools are actually located in:
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#
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# $SYSROOT/rustlib/x86_64-pc-windows-msvc/bin
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#
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# To remedy this problem, the rules below copy all native tool dependencies into
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# the bootstrap triple's location in stage 0 so the bootstrap compiler can find
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# the right sets of tools. Later stages (1+) will have the right host triple for
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# the compiler, so there's no need to worry there.
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#
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# $(1) - stage
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# $(2) - triple that's being used as host/target
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# $(3) - triple snapshot is built for
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# $(4) - crate
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# $(5) - tool
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define MOVE_TOOLS_TO_SNAPSHOT_HOST_DIR
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ifneq (,$(3))
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$$(TLIB$(1)_T_$(2)_H_$(2))/stamp.$(4): $$(HLIB$(1)_H_$(2))/rustlib/$(3)/bin/$(5)
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$$(HLIB$(1)_H_$(2))/rustlib/$(3)/bin/$(5): $$(TBIN$(1)_T_$(2)_H_$(2))/$(5)
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mkdir -p $$(@D)
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cp $$< $$@
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endif
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endef
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$(foreach target,$(CFG_TARGET), \
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$(foreach crate,$(CRATES), \
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$(foreach tool,$(NATIVE_TOOL_DEPS_$(crate)_T_$(target)), \
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$(eval $(call MOVE_TOOLS_TO_SNAPSHOT_HOST_DIR,0,$(target),$(BOOTSTRAP_FROM_$(target)),$(crate),$(tool))))))
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# For MSVC targets we need to set up some environment variables for the linker
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# to work correctly when building Rust crates. These two variables are:
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#
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# - LIB tells the linker the default search path for finding system libraries,
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# for example kernel32.dll
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# - PATH needs to be modified to ensure that MSVC's link.exe is first in the
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# path instead of MinGW's /usr/bin/link.exe (entirely unrelated)
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#
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# The values for these variables are detected by the configure script.
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define SETUP_LIB_MSVC_ENV_VARS
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ifeq ($$(findstring msvc,$(2)),msvc)
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$$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$(4): \
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export LIB := $$(CFG_MSVC_LIB_PATH_$$(HOST_$(2)))
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$$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$(4): \
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export PATH := $$(CFG_MSVC_BINDIR_$$(HOST_$(2))):$$(PATH)
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endif
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endef
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define SETUP_TOOL_MSVC_ENV_VARS
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ifeq ($$(findstring msvc,$(2)),msvc)
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$$(TBIN$(1)_T_$(2)_H_$(3))/$(4)$$(X_$(2)): \
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export LIB := $$(CFG_MSVC_LIB_PATH_$$(HOST_$(2)))
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$$(TBIN$(1)_T_$(2)_H_$(3))/$(4)$$(X_$(2)): \
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export PATH := $$(CFG_MSVC_BINDIR_$$(HOST_$(2))):$$(PATH)
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endif
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endef
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$(foreach host,$(CFG_HOST), \
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$(foreach target,$(CFG_TARGET), \
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$(foreach stage,$(STAGES), \
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$(foreach crate,$(CRATES), \
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$(eval $(call SETUP_LIB_MSVC_ENV_VARS,$(stage),$(target),$(host),$(crate)))))))
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$(foreach host,$(CFG_HOST), \
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$(foreach target,$(CFG_TARGET), \
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$(foreach stage,$(STAGES), \
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$(foreach tool,$(TOOLS), \
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$(eval $(call SETUP_TOOL_MSVC_ENV_VARS,$(stage),$(target),$(host),$(tool)))))))
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