1 # Copyright 2014-2015 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 ######################################################################
12 # Version numbers and strings
13 ######################################################################
16 CFG_RELEASE_NUM=1.12.0
18 # An optional number to put after the label, e.g. '.2' -> '-beta.2'
19 # NB Make sure it starts with a dot to conform to semver pre-release
20 # versions (section 9)
21 CFG_PRERELEASE_VERSION=.1
23 ifeq ($(CFG_RELEASE_CHANNEL),stable)
24 # This is the normal semver version string, e.g. "0.12.0", "0.12.0-nightly"
25 CFG_RELEASE=$(CFG_RELEASE_NUM)
26 # This is the string used in dist artifact file names, e.g. "0.12.0", "nightly"
27 CFG_PACKAGE_VERS=$(CFG_RELEASE_NUM)
28 CFG_DISABLE_UNSTABLE_FEATURES=1
30 ifeq ($(CFG_RELEASE_CHANNEL),beta)
31 CFG_RELEASE=$(CFG_RELEASE_NUM)-beta$(CFG_PRERELEASE_VERSION)
32 # When building beta distributables just reuse the same "beta" name
33 # so when we upload we'll always override the previous beta. This
34 # doesn't actually impact the version reported by rustc - it's just
37 CFG_DISABLE_UNSTABLE_FEATURES=1
39 ifeq ($(CFG_RELEASE_CHANNEL),nightly)
40 CFG_RELEASE=$(CFG_RELEASE_NUM)-nightly
41 # When building nightly distributables just reuse the same "nightly" name
42 # so when we upload we'll always override the previous nighly. This
43 # doesn't actually impact the version reported by rustc - it's just
45 CFG_PACKAGE_VERS=nightly
47 ifeq ($(CFG_RELEASE_CHANNEL),dev)
48 CFG_RELEASE=$(CFG_RELEASE_NUM)-dev
49 CFG_PACKAGE_VERS=$(CFG_RELEASE_NUM)-dev
52 # Append a version-dependent hash to each library, so we can install different
53 # versions in the same place
54 CFG_FILENAME_EXTRA=$(shell printf '%s' $(CFG_RELEASE)$(CFG_EXTRA_FILENAME) | $(CFG_HASH_COMMAND))
56 # A magic value that allows the compiler to use unstable features during the
57 # bootstrap even when doing so would normally be an error because of feature
58 # staging or because the build turns on warnings-as-errors and unstable features
59 # default to warnings. The build has to match this key in an env var.
61 # This value is keyed off the release to ensure that all compilers for one
62 # particular release have the same bootstrap key. Note that this is
63 # intentionally not "secure" by any definition, this is largely just a deterrent
64 # from users enabling unstable features on the stable compiler.
65 CFG_BOOTSTRAP_KEY=$(CFG_FILENAME_EXTRA)
67 # If local-rust is the same as the current version, then force a local-rebuild
68 ifdef CFG_ENABLE_LOCAL_RUST
69 ifeq ($(CFG_RELEASE),\
70 $(shell $(S)src/etc/local_stage0.sh --print-rustc-release $(CFG_LOCAL_RUST_ROOT)))
71 CFG_INFO := $(info cfg: auto-detected local-rebuild $(CFG_RELEASE))
72 CFG_ENABLE_LOCAL_REBUILD = 1
76 # The stage0 compiler needs to use the previous key recorded in src/stage0.txt,
77 # except for local-rebuild when it just uses the same current key.
78 ifdef CFG_ENABLE_LOCAL_REBUILD
79 CFG_BOOTSTRAP_KEY_STAGE0=$(CFG_BOOTSTRAP_KEY)
81 CFG_BOOTSTRAP_KEY_STAGE0=$(shell sed -ne 's/^rustc_key: //p' $(S)src/stage0.txt)
84 # The name of the package to use for creating tarballs, installers etc.
85 CFG_PACKAGE_NAME=rustc-$(CFG_PACKAGE_VERS)
87 # The version string plus commit information - this is what rustc reports
88 CFG_VERSION = $(CFG_RELEASE)
89 CFG_GIT_DIR := $(CFG_SRC_DIR).git
90 # since $(CFG_GIT) may contain spaces (especially on Windows),
91 # we need to escape them. (" " to r"\ ")
92 # Note that $(subst ...) ignores space after `subst`,
93 # so we use a hack: define $(SPACE) which contains space character.
97 ifneq ($(wildcard $(subst $(SPACE),\$(SPACE),$(CFG_GIT_DIR))),)
98 CFG_VER_DATE = $(shell git --git-dir='$(CFG_GIT_DIR)' log -1 --date=short --pretty=format:'%cd')
99 CFG_VER_HASH = $(shell git --git-dir='$(CFG_GIT_DIR)' rev-parse HEAD)
100 CFG_SHORT_VER_HASH = $(shell git --git-dir='$(CFG_GIT_DIR)' rev-parse --short=9 HEAD)
101 CFG_VERSION += ($(CFG_SHORT_VER_HASH) $(CFG_VER_DATE))
105 # Windows exe's need numeric versions - don't use anything but
106 # numbers and dots here
107 CFG_VERSION_WIN = $(CFG_RELEASE_NUM)
109 CFG_INFO := $(info cfg: version $(CFG_VERSION))
111 ######################################################################
113 ######################################################################
115 MKFILE_DEPS := config.stamp $(call rwildcard,$(CFG_SRC_DIR)mk/,*)
116 MKFILES_FOR_TARBALL:=$(MKFILE_DEPS)
117 ifneq ($(NO_MKFILE_DEPS),)
120 NON_BUILD_HOST = $(filter-out $(CFG_BUILD),$(CFG_HOST))
121 NON_BUILD_TARGET = $(filter-out $(CFG_BUILD),$(CFG_TARGET))
123 ifneq ($(MAKE_RESTARTS),)
124 CFG_INFO := $(info cfg: make restarts: $(MAKE_RESTARTS))
127 CFG_INFO := $(info cfg: build triple $(CFG_BUILD))
128 CFG_INFO := $(info cfg: host triples $(CFG_HOST))
129 CFG_INFO := $(info cfg: target triples $(CFG_TARGET))
131 ifneq ($(wildcard $(NON_BUILD_HOST)),)
132 CFG_INFO := $(info cfg: non-build host triples $(NON_BUILD_HOST))
134 ifneq ($(wildcard $(NON_BUILD_TARGET)),)
135 CFG_INFO := $(info cfg: non-build target triples $(NON_BUILD_TARGET))
138 CFG_RUSTC_FLAGS := $(RUSTFLAGS)
140 CFG_GCCISH_LINK_FLAGS :=
142 CFG_JEMALLOC_FLAGS :=
144 ifdef CFG_DISABLE_OPTIMIZE
145 $(info cfg: disabling rustc optimization (CFG_DISABLE_OPTIMIZE))
147 CFG_JEMALLOC_FLAGS += --enable-debug
149 # The rtopt cfg turns off runtime sanity checks
150 CFG_RUSTC_FLAGS += -O --cfg rtopt
153 CFG_JEMALLOC_FLAGS += $(JEMALLOC_FLAGS)
155 ifdef CFG_ENABLE_DEBUG_ASSERTIONS
156 $(info cfg: enabling debug assertions (CFG_ENABLE_DEBUG_ASSERTIONS))
157 CFG_RUSTC_FLAGS += -C debug-assertions=on
160 ifdef CFG_ENABLE_DEBUGINFO
161 $(info cfg: enabling debuginfo (CFG_ENABLE_DEBUGINFO))
162 CFG_RUSTC_FLAGS += -g
165 ifdef CFG_ENABLE_ORBIT
166 $(info cfg: launching MIR (CFG_ENABLE_ORBIT))
167 CFG_RUSTC_FLAGS += -Z orbit
171 CFG_RUSTC_FLAGS += -C save-temps
174 CFG_RUSTC_FLAGS += -Z asm-comments
177 CFG_RUSTC_FLAGS += -Z time-passes
179 ifdef TIME_LLVM_PASSES
180 CFG_RUSTC_FLAGS += -Z time-llvm-passes
183 CFG_RUSTC_FLAGS += -Z trace
185 ifndef CFG_DISABLE_RPATH
186 CFG_RUSTC_FLAGS += -C rpath
189 # The executables crated during this compilation process have no need to include
190 # static copies of libstd and libextra. We also generate dynamic versions of all
191 # libraries, so in the interest of space, prefer dynamic linking throughout the
192 # compilation process.
194 # Note though that these flags are omitted for the *bins* in stage2+. This means
195 # that the snapshot will be generated with a statically linked rustc so we only
196 # have to worry about the distribution of one file (with its native dynamic
198 RUSTFLAGS_STAGE0 += -C prefer-dynamic -C no-stack-check
199 RUSTFLAGS_STAGE1 += -C prefer-dynamic
200 RUST_LIB_FLAGS_ST2 += -C prefer-dynamic
201 RUST_LIB_FLAGS_ST3 += -C prefer-dynamic
203 # Landing pads require a lot of codegen. We can get through bootstrapping faster
204 # by not emitting them.
206 ifdef CFG_DISABLE_STAGE0_LANDING_PADS
207 RUSTFLAGS_STAGE0 += -Z no-landing-pads
210 # platform-specific auto-configuration
211 include $(CFG_SRC_DIR)mk/platform.mk
213 # Run the stage1/2 compilers under valgrind
214 ifdef VALGRIND_COMPILE
215 CFG_VALGRIND_COMPILE := $(CFG_VALGRIND)
217 CFG_VALGRIND_COMPILE :=
221 ifndef CFG_DISABLE_VALGRIND_RPASS
222 $(info cfg: enabling valgrind run-pass tests (CFG_ENABLE_VALGRIND_RPASS))
223 $(info cfg: valgrind-rpass command set to $(CFG_VALGRIND))
224 CFG_VALGRIND_RPASS :=$(CFG_VALGRIND)
226 $(info cfg: disabling valgrind run-pass tests)
227 CFG_VALGRIND_RPASS :=
231 ifdef CFG_ENABLE_VALGRIND
232 $(info cfg: enabling valgrind (CFG_ENABLE_VALGRIND))
233 CFG_JEMALLOC_FLAGS += --enable-valgrind
238 ######################################################################
239 # Target-and-rule "utility variables"
240 ######################################################################
242 define DEF_FOR_TARGET
243 X_$(1) := $(CFG_EXE_SUFFIX_$(1))
244 ifndef CFG_LLVM_TARGET_$(1)
245 CFG_LLVM_TARGET_$(1) := $(1)
248 $(foreach target,$(CFG_TARGET), \
249 $(eval $(call DEF_FOR_TARGET,$(target))))
251 # "Source" files we generate in builddir along the way.
254 # Delete the built-in rules.
263 ######################################################################
264 # Cleaning out old crates
265 ######################################################################
267 # $(1) is the path for directory to match against
268 # $(2) is the glob to use in the match
270 # Note that a common bug is to accidentally construct the glob denoted
271 # by $(2) with a space character prefix, which invalidates the
272 # construction $(1)$(2).
273 define CHECK_FOR_OLD_GLOB_MATCHES
274 $(Q)MATCHES="$(wildcard $(1))"; if [ -n "$$MATCHES" ] ; then echo "warning: there are previous" \'$(notdir $(2))\' "libraries:" $$MATCHES; fi
277 # Same interface as above, but deletes rather than just listing the files.
279 define REMOVE_ALL_OLD_GLOB_MATCHES
280 $(Q)MATCHES="$(wildcard $(1))"; if [ -n "$$MATCHES" ] ; then echo "warning: removing previous" \'$(notdir $(1))\' "libraries:" $$MATCHES; rm $$MATCHES ; fi
283 define REMOVE_ALL_OLD_GLOB_MATCHES
284 $(Q)MATCHES="$(wildcard $(1))"; if [ -n "$$MATCHES" ] ; then rm $$MATCHES ; fi
288 # We use a different strategy for LIST_ALL_OLD_GLOB_MATCHES_EXCEPT
289 # than in the macros above because it needs the result of running the
290 # `ls` command after other rules in the command list have run; the
291 # macro-expander for $(wildcard ...) would deliver its results too
292 # soon. (This is in contrast to the macros above, which are meant to
293 # be run at the outset of a command list in a rule.)
295 define LIST_ALL_OLD_GLOB_MATCHES
296 @echo "info: now are following matches for" '$(notdir $(1))' "libraries:"
297 @( ls $(1) 2>/dev/null || true )
300 define LIST_ALL_OLD_GLOB_MATCHES
304 ######################################################################
306 ######################################################################
308 LLVM_OPTIONAL_COMPONENTS=x86 arm aarch64 mips powerpc pnacl
309 LLVM_REQUIRED_COMPONENTS=ipo bitreader bitwriter linker asmparser mcjit \
310 interpreter instrumentation
312 ifneq ($(CFG_LLVM_ROOT),)
313 # Ensure we only try to link targets that the installed LLVM actually has:
314 LLVM_COMPONENTS := $(filter $(shell $(CFG_LLVM_ROOT)/bin/llvm-config$(X_$(CFG_BUILD)) --components),\
315 $(LLVM_OPTIONAL_COMPONENTS)) $(LLVM_REQUIRED_COMPONENTS)
317 LLVM_COMPONENTS := $(LLVM_OPTIONAL_COMPONENTS) $(LLVM_REQUIRED_COMPONENTS)
320 # Only build these LLVM tools
321 LLVM_TOOLS=bugpoint llc llvm-ar llvm-as llvm-dis llvm-mc opt llvm-extract
324 # The configure script defines these variables with the target triples
325 # separated by Z. This defines new ones with the expected format.
326 ifeq ($$(CFG_LLVM_ROOT),)
327 CFG_LLVM_BUILD_DIR_$(1):=$$(CFG_LLVM_BUILD_DIR_$(subst -,_,$(1)))
328 CFG_LLVM_INST_DIR_$(1):=$$(CFG_LLVM_INST_DIR_$(subst -,_,$(1)))
330 CFG_LLVM_INST_DIR_$(1):=$$(CFG_LLVM_ROOT)
333 # Any rules that depend on LLVM should depend on LLVM_CONFIG
334 LLVM_CONFIG_$(1):=$$(CFG_LLVM_INST_DIR_$(1))/bin/llvm-config$$(X_$(1))
335 LLVM_MC_$(1):=$$(CFG_LLVM_INST_DIR_$(1))/bin/llvm-mc$$(X_$(1))
336 LLVM_AR_$(1):=$$(CFG_LLVM_INST_DIR_$(1))/bin/llvm-ar$$(X_$(1))
337 LLVM_VERSION_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --version)
338 LLVM_BINDIR_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --bindir)
339 LLVM_INCDIR_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --includedir)
340 LLVM_LIBDIR_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --libdir)
341 LLVM_LIBDIR_RUSTFLAGS_$(1)=-L native="$$(LLVM_LIBDIR_$(1))"
342 LLVM_LDFLAGS_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --ldflags)
343 ifeq ($$(findstring freebsd,$(1)),freebsd)
344 # On FreeBSD, it may search wrong headers (that are for pre-installed LLVM),
345 # so we replace -I with -iquote to ensure that it searches bundled LLVM first.
346 LLVM_CXXFLAGS_$(1)=$$(subst -I, -iquote , $$(shell "$$(LLVM_CONFIG_$(1))" --cxxflags))
348 LLVM_CXXFLAGS_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --cxxflags)
350 LLVM_HOST_TRIPLE_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --host-target)
352 LLVM_AS_$(1)=$$(CFG_LLVM_INST_DIR_$(1))/bin/llvm-as$$(X_$(1))
353 LLC_$(1)=$$(CFG_LLVM_INST_DIR_$(1))/bin/llc$$(X_$(1))
355 LLVM_ALL_COMPONENTS_$(1)=$$(shell "$$(LLVM_CONFIG_$(1))" --components)
359 $(foreach host,$(CFG_HOST), \
360 $(eval $(call DEF_LLVM_VARS,$(host))))
362 ######################################################################
363 # Exports for sub-utilities
364 ######################################################################
366 # Note that any variable that re-configure should pick up needs to be
370 export CFG_SRC_DIR_RELATIVE
379 export CFG_VERSION_WIN
381 export CFG_PACKAGE_NAME
383 export CFG_RELEASE_CHANNEL
387 export CFG_LIBDIR_RELATIVE
388 export CFG_DISABLE_INJECT_STD_VERSION
389 ifdef CFG_DISABLE_UNSTABLE_FEATURES
390 CFG_INFO := $(info cfg: disabling unstable features (CFG_DISABLE_UNSTABLE_FEATURES))
391 # Turn on feature-staging
392 export CFG_DISABLE_UNSTABLE_FEATURES
393 # Subvert unstable feature lints to do the self-build
394 export RUSTC_BOOTSTRAP_KEY:=$(CFG_BOOTSTRAP_KEY)
396 export CFG_BOOTSTRAP_KEY
401 ######################################################################
402 # Per-stage targets and runner
403 ######################################################################
405 # Valid setting-strings are 'all', 'none', 'gdb', 'lldb'
406 # This 'function' will determine which debugger scripts to copy based on a
407 # target triple. See debuggers.mk for more information.
408 TRIPLE_TO_DEBUGGER_SCRIPT_SETTING=\
409 $(if $(findstring windows-msvc,$(1)),none,all)
414 # $(1) is the stage number
415 # $(2) is the target triple
416 # $(3) is the host triple
418 # Destinations of artifacts for the host compiler
419 HROOT$(1)_H_$(3) = $(3)/stage$(1)
420 HBIN$(1)_H_$(3) = $$(HROOT$(1)_H_$(3))/bin
422 ifeq ($$(CFG_WINDOWSY_$(3)),1)
423 # On Windows we always store host runtime libraries in the 'bin' directory because
424 # there's no rpath. Target libraries go under $CFG_LIBDIR_RELATIVE (usually 'lib').
425 HLIB_RELATIVE$(1)_H_$(3) = bin
426 TROOT$(1)_T_$(2)_H_$(3) = $$(HROOT$(1)_H_$(3))/$$(CFG_LIBDIR_RELATIVE)/rustlib/$(2)
427 # Remove the next 3 lines after a snapshot
429 RUSTFLAGS_STAGE0 += -L $$(TROOT$(1)_T_$(2)_H_$(3))/lib
435 HLIB_RELATIVE$(1)_H_$(3) = lib
437 HLIB_RELATIVE$(1)_H_$(3) = $$(CFG_LIBDIR_RELATIVE)
439 TROOT$(1)_T_$(2)_H_$(3) = $$(HLIB$(1)_H_$(3))/rustlib/$(2)
442 HLIB$(1)_H_$(3) = $$(HROOT$(1)_H_$(3))/$$(HLIB_RELATIVE$(1)_H_$(3))
444 # Destinations of artifacts for target architectures
445 TBIN$(1)_T_$(2)_H_$(3) = $$(TROOT$(1)_T_$(2)_H_$(3))/bin
446 TLIB$(1)_T_$(2)_H_$(3) = $$(TROOT$(1)_T_$(2)_H_$(3))/lib
448 # Preqrequisites for using the stageN compiler
450 HSREQ$(1)_H_$(3) = $$(HBIN$(1)_H_$(3))/rustc$$(X_$(3))
453 $$(HBIN$(1)_H_$(3))/rustc$$(X_$(3)) \
455 tmp/install-debugger-scripts$(1)_H_$(3)-$$(call TRIPLE_TO_DEBUGGER_SCRIPT_SETTING,$(3)).done
458 # Prerequisites for using the stageN compiler to build target artifacts
459 TSREQ$(1)_T_$(2)_H_$(3) = \
460 $$(HSREQ$(1)_H_$(3)) \
461 $$(foreach obj,$$(REQUIRED_OBJECTS_$(2)),\
462 $$(TLIB$(1)_T_$(2)_H_$(3))/$$(obj))
464 # Prerequisites for a working stageN compiler and libraries, for a specific
466 SREQ$(1)_T_$(2)_H_$(3) = \
467 $$(TSREQ$(1)_T_$(2)_H_$(3)) \
468 $$(foreach dep,$$(TARGET_CRATES_$(2)), \
469 $$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$$(dep)) \
470 tmp/install-debugger-scripts$(1)_T_$(2)_H_$(3)-$$(call TRIPLE_TO_DEBUGGER_SCRIPT_SETTING,$(2)).done
472 # Prerequisites for a working stageN compiler and complete set of target
474 CSREQ$(1)_T_$(2)_H_$(3) = \
475 $$(TSREQ$(1)_T_$(2)_H_$(3)) \
476 $$(HBIN$(1)_H_$(3))/rustdoc$$(X_$(3)) \
477 $$(foreach dep,$$(HOST_CRATES),$$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$$(dep))
480 # Don't run the stage0 compiler under valgrind - that ship has sailed
481 CFG_VALGRIND_COMPILE$(1) =
483 CFG_VALGRIND_COMPILE$(1) = $$(CFG_VALGRIND_COMPILE)
486 # Add RUSTFLAGS_STAGEN values to the build command
487 EXTRAFLAGS_STAGE$(1) = $$(RUSTFLAGS_STAGE$(1))
489 CFGFLAG$(1)_T_$(2)_H_$(3) = stage$(1)
493 # Same macro/variables as above, but defined in a separate loop so it can use
494 # all the variables above for all archs. The RPATH_VAR setup sometimes needs to
495 # reach across triples to get things in order.
497 # Defines (with the standard $(1)_T_$(2)_H_$(3) suffix):
498 # * `LD_LIBRARY_PATH_ENV_NAME`: the name for the key to use in the OS
499 # environment to access or extend the lookup path for dynamic
500 # libraries. Note on Windows, that key is `$PATH`, and thus not
501 # only conflates programs with dynamic libraries, but also often
502 # contains spaces which confuse make.
503 # * `LD_LIBRARY_PATH_ENV_HOSTDIR`: the entry to add to lookup path for the host
504 # * `LD_LIBRARY_PATH_ENV_TARGETDIR`: the entry to add to lookup path for target
506 # Below that, HOST_RPATH_VAR and TARGET_RPATH_VAR are defined in terms of the
511 ifeq ($$(OSTYPE_$(3)),apple-darwin)
512 LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3) := DYLD_LIBRARY_PATH
514 ifeq ($$(CFG_WINDOWSY_$(3)),1)
515 LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3) := PATH
517 LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3) := LD_LIBRARY_PATH
521 LD_LIBRARY_PATH_ENV_HOSTDIR$(1)_T_$(2)_H_$(3) := \
522 $$(CURDIR)/$$(HLIB$(1)_H_$(3)):$$(CFG_LLVM_INST_DIR_$(3))/lib
523 LD_LIBRARY_PATH_ENV_TARGETDIR$(1)_T_$(2)_H_$(3) := \
524 $$(CURDIR)/$$(TLIB$(1)_T_$(2)_H_$(3))
526 HOST_RPATH_VAR$(1)_T_$(2)_H_$(3) := \
527 $$(LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3))=$$(LD_LIBRARY_PATH_ENV_HOSTDIR$(1)_T_$(2)_H_$(3)):$$$$$$(LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3))
528 TARGET_RPATH_VAR$(1)_T_$(2)_H_$(3) := \
529 $$(LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3))=$$(LD_LIBRARY_PATH_ENV_TARGETDIR$(1)_T_$(2)_H_$(3)):$$$$$$(LD_LIBRARY_PATH_ENV_NAME$(1)_T_$(2)_H_$(3))
531 RPATH_VAR$(1)_T_$(2)_H_$(3) := $$(HOST_RPATH_VAR$(1)_T_$(2)_H_$(3))
533 # Pass --cfg stage0 only for the build->host part of stage0;
534 # if you're building a cross config, the host->* parts are
535 # effectively stage1, since it uses the just-built stage0.
537 # Also be sure to use the right rpath because we're loading libraries from the
538 # CFG_BUILD's stage1 directory for our target, so switch this one instance of
539 # `RPATH_VAR` to get the bootstrap working.
541 ifneq ($(strip $(CFG_BUILD)),$(strip $(3)))
542 CFGFLAG$(1)_T_$(2)_H_$(3) = stage1
544 RPATH_VAR$(1)_T_$(2)_H_$(3) := $$(TARGET_RPATH_VAR1_T_$(2)_H_$$(CFG_BUILD))
546 ifdef CFG_ENABLE_LOCAL_REBUILD
547 # Assume the local-rebuild rustc already has stage1 features too.
548 CFGFLAG$(1)_T_$(2)_H_$(3) = stage1
553 STAGE$(1)_T_$(2)_H_$(3) := \
554 $$(Q)$$(RPATH_VAR$(1)_T_$(2)_H_$(3)) \
555 $$(call CFG_RUN_TARG_$(3),$(1), \
556 $$(CFG_VALGRIND_COMPILE$(1)) \
557 $$(HBIN$(1)_H_$(3))/rustc$$(X_$(3)) \
558 --cfg $$(CFGFLAG$(1)_T_$(2)_H_$(3)) \
559 $$(CFG_RUSTC_FLAGS) $$(EXTRAFLAGS_STAGE$(1)) --target=$(2)) \
564 $(foreach build,$(CFG_HOST), \
565 $(eval $(foreach target,$(CFG_TARGET), \
566 $(eval $(foreach stage,$(STAGES), \
567 $(eval $(call SREQ,$(stage),$(target),$(build))))))))
569 $(foreach build,$(CFG_HOST), \
570 $(eval $(foreach target,$(CFG_TARGET), \
571 $(eval $(foreach stage,$(STAGES), \
572 $(eval $(call SREQ_CMDS,$(stage),$(target),$(build))))))))
574 ######################################################################
577 # Builds a functional Rustc for the given host.
578 ######################################################################
580 define DEF_RUSTC_STAGE_TARGET
581 # $(1) == architecture
584 rustc-stage$(2)-H-$(1): \
585 $$(foreach target,$$(CFG_TARGET),$$(SREQ$(2)_T_$$(target)_H_$(1)))
589 $(foreach host,$(CFG_HOST), \
590 $(eval $(foreach stage,1 2 3, \
591 $(eval $(call DEF_RUSTC_STAGE_TARGET,$(host),$(stage))))))
593 rustc-stage1: rustc-stage1-H-$(CFG_BUILD)
594 rustc-stage2: rustc-stage2-H-$(CFG_BUILD)
595 rustc-stage3: rustc-stage3-H-$(CFG_BUILD)
597 define DEF_RUSTC_TARGET
598 # $(1) == architecture
600 rustc-H-$(1): rustc-stage2-H-$(1)
603 $(foreach host,$(CFG_TARGET), \
604 $(eval $(call DEF_RUSTC_TARGET,$(host))))
606 rustc-stage1: rustc-stage1-H-$(CFG_BUILD)
607 rustc-stage2: rustc-stage2-H-$(CFG_BUILD)
608 rustc-stage3: rustc-stage3-H-$(CFG_BUILD)
609 rustc: rustc-H-$(CFG_BUILD)
611 rustc-H-all: $(foreach host,$(CFG_HOST),rustc-H-$(host))
613 ######################################################################
615 ######################################################################
620 ifneq ($$(findstring $(1),$$(CFG_HOST)),)
622 all-target-$(1)-host-$(2): $$(CSREQ2_T_$(1)_H_$(2))
624 # This is a target only
625 all-target-$(1)-host-$(2): $$(SREQ2_T_$(1)_H_$(2))
629 $(foreach target,$(CFG_TARGET), \
630 $(foreach host,$(CFG_HOST), \
631 $(eval $(call ALL_TARGET_N,$(target),$(host)))))
633 ALL_TARGET_RULES = $(foreach target,$(CFG_TARGET), \
634 $(foreach host,$(CFG_HOST), \
635 all-target-$(target)-host-$(host)))
637 all: $(ALL_TARGET_RULES) $(GENERATED) docs
639 ######################################################################
640 # Build system documentation
641 ######################################################################
643 # $(1) is the name of the doc <section> in Makefile.in
644 # pick everything between tags | remove first line | remove last line
645 # | remove extra (?) line | strip leading `#` from lines
646 SHOW_DOCS = $(Q)awk '/<$(1)>/,/<\/$(1)>/' $(S)/Makefile.in | sed '1d' | sed '$$d' | sed 's/^\# \?//'
649 $(call SHOW_DOCS,help)
652 $(call SHOW_DOCS,tips)
655 $(call SHOW_DOCS,nitty-gritty)