1 # Copyright 2012 The Rust Project Developers. See the COPYRIGHT
2 # file at the top-level directory of this distribution and at
3 # http://rust-lang.org/COPYRIGHT.
5 # Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 # http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 # <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 # option. This file may not be copied, modified, or distributed
9 # except according to those terms.
11 # This is the compile-time target-triple for the compiler. For the compiler at
12 # runtime, this should be considered the host-triple. More explanation for why
13 # this exists can be found on issue #2400
14 export CFG_COMPILER_HOST_TRIPLE
16 # The standard libraries should be held up to a higher standard than any old
17 # code, make sure that these common warnings are denied by default. These can
18 # be overridden during development temporarily. For stage0, we allow warnings
19 # which may be bugs in stage0 (should be fixed in stage1+)
20 RUST_LIB_FLAGS_ST0 += -W warnings
21 RUST_LIB_FLAGS_ST1 += -D warnings
22 RUST_LIB_FLAGS_ST2 += -D warnings
24 # Macro that generates the full list of dependencies for a crate at a particular
25 # stage/target/host tuple.
31 define RUST_CRATE_FULLDEPS
32 CRATE_FULLDEPS_$(1)_T_$(2)_H_$(3)_$(4) := \
35 $$(foreach dep,$$(RUST_DEPS_$(4)), \
36 $$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$$(dep)) \
37 $$(foreach dep,$$(NATIVE_DEPS_$(4)), \
38 $$(RT_OUTPUT_DIR_$(2))/$$(call CFG_STATIC_LIB_NAME_$(2),$$(dep))) \
39 $$(foreach dep,$$(NATIVE_DEPS_$(4)_T_$(2)), \
40 $$(RT_OUTPUT_DIR_$(2))/$$(dep))
43 $(foreach host,$(CFG_HOST), \
44 $(foreach target,$(CFG_TARGET), \
45 $(foreach stage,$(STAGES), \
46 $(foreach crate,$(CRATES), \
47 $(eval $(call RUST_CRATE_FULLDEPS,$(stage),$(target),$(host),$(crate)))))))
49 # RUST_TARGET_STAGE_N template: This defines how target artifacts are built
50 # for all stage/target architecture combinations. This is one giant rule which
53 # 1. The immediate dependencies are the rust source files
54 # 2. Each rust crate dependency is listed (based on their stamp files),
55 # as well as all native dependencies (listed in RT_OUTPUT_DIR)
56 # 3. The stage (n-1) compiler is required through the TSREQ dependency
57 # 4. When actually executing the rule, the first thing we do is to clean out
58 # old libs and rlibs via the REMOVE_ALL_OLD_GLOB_MATCHES macro
59 # 5. Finally, we get around to building the actual crate. It's just one
60 # "small" invocation of the previous stage rustc. We use -L to
61 # RT_OUTPUT_DIR so all the native dependencies are picked up.
62 # Additionally, we pass in the llvm dir so rustc can link against it.
63 # 6. Some cleanup is done (listing what was just built) if verbose is turned
67 # $(2) is the target triple
68 # $(3) is the host triple
69 # $(4) is the crate name
70 define RUST_TARGET_STAGE_N
72 $$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$(4): CFG_COMPILER_HOST_TRIPLE = $(2)
73 $$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$(4): \
75 $$(CRATE_FULLDEPS_$(1)_T_$(2)_H_$(3)_$(4)) \
76 $$(LLVM_CONFIG_$(2)) \
77 $$(TSREQ$(1)_T_$(2)_H_$(3)) \
78 | $$(TLIB$(1)_T_$(2)_H_$(3))/
79 @$$(call E, rustc: $$(@D)/lib$(4))
81 $$(call REMOVE_ALL_OLD_GLOB_MATCHES, \
82 $$(dir $$@)$$(call CFG_LIB_GLOB_$(2),$(4)))
83 $$(call REMOVE_ALL_OLD_GLOB_MATCHES, \
84 $$(dir $$@)$$(call CFG_RLIB_GLOB,$(4)))
85 $(Q)CFG_LLVM_LINKAGE_FILE=$$(LLVM_LINKAGE_PATH_$(2)) \
86 $$(subst @,,$$(STAGE$(1)_T_$(2)_H_$(3))) \
87 $$(RUST_LIB_FLAGS_ST$(1)) \
88 -L "$$(RT_OUTPUT_DIR_$(2))" \
89 $$(LLVM_LIBDIR_RUSTFLAGS_$(2)) \
90 $$(LLVM_STDCPP_RUSTFLAGS_$(2)) \
92 $$(RUSTFLAGS$(1)_$(4)_T_$(2)) \
94 -C extra-filename=-$$(CFG_FILENAME_EXTRA) \
96 @touch -r $$@.start_time $$@ && rm $$@.start_time
97 $$(call LIST_ALL_OLD_GLOB_MATCHES, \
98 $$(dir $$@)$$(call CFG_LIB_GLOB_$(2),$(4)))
99 $$(call LIST_ALL_OLD_GLOB_MATCHES, \
100 $$(dir $$@)$$(call CFG_RLIB_GLOB,$(4)))
104 # Macro for building any tool as part of the rust compilation process. Each
105 # tool is defined in crates.mk with a list of library dependencies as well as
106 # the source file for the tool. Building each tool will also be passed '--cfg
107 # <tool>' for usage in driver.rs
109 # This build rule is similar to the one found above, just tweaked for
110 # locations and things.
113 # $(2) - target triple
115 # $(4) - name of the tool being built
118 $$(TBIN$(1)_T_$(2)_H_$(3))/$(4)$$(X_$(2)): \
119 $$(TOOL_SOURCE_$(4)) \
120 $$(TOOL_INPUTS_$(4)) \
121 $$(foreach dep,$$(TOOL_DEPS_$(4)), \
122 $$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$$(dep)) \
123 $$(TSREQ$(1)_T_$(2)_H_$(3)) \
124 | $$(TBIN$(1)_T_$(2)_H_$(3))/
125 @$$(call E, rustc: $$@)
126 $$(STAGE$(1)_T_$(2)_H_$(3)) -o $$@ $$< --cfg $(4)
130 # Every recipe in RUST_TARGET_STAGE_N outputs to $$(TLIB$(1)_T_$(2)_H_$(3),
131 # a directory that can be cleaned out during the middle of a run of
132 # the get-snapshot.py script. Therefore, every recipe needs to have
133 # an order-only dependency either on $(SNAPSHOT_RUSTC_POST_CLEANUP) or
134 # on $$(TSREQ$(1)_T_$(2)_H_$(3)), to ensure that no products will be
135 # put into the target area until after the get-snapshot.py script has
136 # had its chance to clean it out; otherwise the other products will be
137 # inadvertently included in the clean out.
138 SNAPSHOT_RUSTC_POST_CLEANUP=$(HBIN0_H_$(CFG_BUILD))/rustc$(X_$(CFG_BUILD))
140 define TARGET_HOST_RULES
142 $$(TLIB$(1)_T_$(2)_H_$(3))/:
145 $$(TLIB$(1)_T_$(2)_H_$(3))/%: $$(RT_OUTPUT_DIR_$(2))/% \
146 | $$(TLIB$(1)_T_$(2)_H_$(3))/ $$(SNAPSHOT_RUSTC_POST_CLEANUP)
151 $(foreach source,$(CFG_HOST), \
152 $(foreach target,$(CFG_TARGET), \
153 $(eval $(call TARGET_HOST_RULES,0,$(target),$(source))) \
154 $(eval $(call TARGET_HOST_RULES,1,$(target),$(source))) \
155 $(eval $(call TARGET_HOST_RULES,2,$(target),$(source))) \
156 $(eval $(call TARGET_HOST_RULES,3,$(target),$(source)))))
158 # In principle, each host can build each target for both libs and tools
159 $(foreach crate,$(CRATES), \
160 $(foreach source,$(CFG_HOST), \
161 $(foreach target,$(CFG_TARGET), \
162 $(eval $(call RUST_TARGET_STAGE_N,0,$(target),$(source),$(crate))) \
163 $(eval $(call RUST_TARGET_STAGE_N,1,$(target),$(source),$(crate))) \
164 $(eval $(call RUST_TARGET_STAGE_N,2,$(target),$(source),$(crate))) \
165 $(eval $(call RUST_TARGET_STAGE_N,3,$(target),$(source),$(crate))))))
167 $(foreach host,$(CFG_HOST), \
168 $(foreach target,$(CFG_TARGET), \
169 $(foreach stage,$(STAGES), \
170 $(foreach tool,$(TOOLS), \
171 $(eval $(call TARGET_TOOL,$(stage),$(target),$(host),$(tool)))))))