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# Extract the snapshot host compiler
$(HBIN0_H_$(CFG_HOST_TRIPLE))/rustc$(X): \
$(S)src/snapshots.txt \
$(S)src/etc/get-snapshot.py $(MKFILE_DEPS)
@$(call E, fetch: $@)
# Note: the variable "SNAPSHOT_FILE" is generally not set, and so
# we generally only pass one argument to this script.
ifdef CFG_ENABLE_LOCAL_RUST
$(Q)$(S)src/etc/local_stage0.sh $(CFG_HOST_TRIPLE) $(CFG_LOCAL_RUST_ROOT)
else
$(Q)$(S)src/etc/get-snapshot.py $(CFG_HOST_TRIPLE) $(SNAPSHOT_FILE)
endif
$(Q)touch $@
# Host libs will be extracted by the above rule
$(HLIB0_H_$(CFG_HOST_TRIPLE))/$(CFG_RUNTIME): \
$(HBIN0_H_$(CFG_HOST_TRIPLE))/rustc$(X)
$(Q)touch $@
$(HLIB0_H_$(CFG_HOST_TRIPLE))/$(CFG_CORELIB): \
$(HBIN0_H_$(CFG_HOST_TRIPLE))/rustc$(X)
$(Q)touch $@
$(HLIB0_H_$(CFG_HOST_TRIPLE))/$(CFG_STDLIB): \
$(HBIN0_H_$(CFG_HOST_TRIPLE))/rustc$(X)
$(Q)touch $@
$(HLIB0_H_$(CFG_HOST_TRIPLE))/$(CFG_LIBRUSTC): \
$(HBIN0_H_$(CFG_HOST_TRIPLE))/rustc$(X)
$(Q)touch $@
$(HLIB0_H_$(CFG_HOST_TRIPLE))/$(CFG_RUSTLLVM): \
$(HBIN0_H_$(CFG_HOST_TRIPLE))/rustc$(X)
$(Q)touch $@
# For other targets, let the host build the target:
define BOOTSTRAP_STAGE0
# $(1) target to bootstrap
# $(2) stage to bootstrap from
# $(3) target to bootstrap from
$$(HBIN0_H_$(1))/rustc$$(X): \
$$(TBIN$(2)_T_$(1)_H_$(3))/rustc$$(X)
@$$(call E, cp: $$@)
$$(Q)cp $$< $$@
$$(HLIB0_H_$(1))/$$(CFG_RUNTIME): \
$$(TLIB$(2)_T_$(1)_H_$(3))/$$(CFG_RUNTIME)
@$$(call E, cp: $$@)
$$(Q)cp $$< $$@
$$(HLIB0_H_$(1))/$(CFG_CORELIB): \
$$(TLIB$(2)_T_$(1)_H_$(3))/$$(CFG_CORELIB)
@$$(call E, cp: $$@)
$$(Q)cp $$(TLIB$(2)_T_$(1)_H_$(3))/$$(CORELIB_GLOB) $$@
$$(HLIB0_H_$(1))/$(CFG_STDLIB): \
$$(TLIB$(2)_T_$(1)_H_$(3))/$$(CFG_STDLIB)
@$$(call E, cp: $$@)
$$(Q)cp $$(TLIB$(2)_T_$(1)_H_$(3))/$$(STDLIB_GLOB) $$@
$$(HLIB0_H_$(1))/$(CFG_LIBRUSTC): \
$$(TLIB$(2)_T_$(1)_H_$(3))/$$(CFG_LIBRUSTC)
@$$(call E, cp: $$@)
$$(Q)cp $$(TLIB$(2)_T_$(1)_H_$(3))/$$(LIBRUSTC_GLOB) $$@
$$(HLIB0_H_$(1))/$(CFG_RUSTLLVM): \
$$(TLIB$(2)_T_$(1)_H_$(3))/$$(CFG_RUSTLLVM)
@$$(call E, cp: $$@)
$$(Q)cp $$< $$@
endef
# Use stage1 to build other architectures: then you don't have to wait
# for stage2, but you get the latest updates to the compiler source.
$(foreach t,$(NON_HOST_TRIPLES), \
$(eval $(call BOOTSTRAP_STAGE0,$(t),1,$(CFG_HOST_TRIPLE))))
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