rust/mk/stage0.mk
Cody P Schafer aa58d534e5 mk/stage0: complain instead of creating an empty file
If the expected rustc snapshot is not where we expect it to be,
complain and fail at that point rather than creating a empty rustc file
and continuing until we try to run it.
2014-11-20 16:00:12 -05:00

52 lines
1.4 KiB
Makefile

# Extract the snapshot host compiler
$(HBIN0_H_$(CFG_BUILD))/:
mkdir -p $@
# On windows these two are the same, so cause a redifinition warning
ifneq ($(HBIN0_H_$(CFG_BUILD)),$(HLIB0_H_$(CFG_BUILD)))
$(HLIB0_H_$(CFG_BUILD))/:
mkdir -p $@
endif
$(SNAPSHOT_RUSTC_POST_CLEANUP): \
$(S)src/snapshots.txt \
$(S)src/etc/get-snapshot.py $(MKFILE_DEPS) \
| $(HBIN0_H_$(CFG_BUILD))/
@$(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_BUILD) $(CFG_LOCAL_RUST_ROOT) rustlib
else
$(Q)$(CFG_PYTHON) $(S)src/etc/get-snapshot.py $(CFG_BUILD) $(SNAPSHOT_FILE)
endif
$(Q)if [ -e "$@" ]; then touch "$@"; else echo "ERROR: snapshot $@ not found"; exit 1; fi
# 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))/:
mkdir -p $@
$(HLIB0_H_$(1))/:
mkdir -p $@
$$(HBIN0_H_$(1))/rustc$$(X_$(1)): \
$$(TBIN$(2)_T_$(1)_H_$(3))/rustc$$(X_$(1)) \
| $(HBIN0_H_$(1))/
@$$(call E, cp: $$@)
$$(Q)cp $$< $$@
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_BUILD_HOST), \
$(eval $(call BOOTSTRAP_STAGE0,$(t),1,$(CFG_BUILD))))