# TARGET_STAGE_N template: This defines how target artifacts are built
# for all stage/target architecture combinations. The arguments:
# $(1) is the stage
# $(2) is the target triple
# $(3) is the host triple

define TARGET_STAGE_N

$$(TLIB$(1)_T_$(2)_H_$(3))/intrinsics.ll: \
		$$(S)src/rt/intrinsics/intrinsics.$(HOST_$(2)).ll.in
	@$$(call E, sed: $$@)
	$$(Q)sed s/@CFG_TARGET_TRIPLE@/$(2)/ $$< > $$@

$$(TLIB$(1)_T_$(2)_H_$(3))/intrinsics.bc: \
		$$(TLIB$(1)_T_$(2)_H_$(3))/intrinsics.ll \
		$$(LLVM_CONFIG_$(2))
	@$$(call E, llvms-as: $$@)
	$$(Q)$$(LLVM_AS_$(2)) -o $$@ $$<

$$(TLIB$(1)_T_$(2)_H_$(3))/libmorestack.a: \
		rt/$(2)/arch/$$(HOST_$(2))/libmorestack.a
	@$$(call E, cp: $$@)
	$$(Q)cp $$< $$@

$$(TLIB$(1)_T_$(2)_H_$(3))/$$(CFG_CORELIB): \
		$$(CORELIB_CRATE) $$(CORELIB_INPUTS) \
		$$(TSREQ$(1)_T_$(2)_H_$(3))
	@$$(call E, compile_and_link: $$@)
	$$(STAGE$(1)_T_$(2)_H_$(3)) --no-core --lib -o $$@ $$< && touch $$@

$$(TLIB$(1)_T_$(2)_H_$(3))/$$(CFG_STDLIB): \
		$$(STDLIB_CRATE) $$(STDLIB_INPUTS) \
        $$(TLIB$(1)_T_$(2)_H_$(3))/$$(CFG_CORELIB) \
		$$(TSREQ$(1)_T_$(2)_H_$(3))
	@$$(call E, compile_and_link: $$@)
	$$(STAGE$(1)_T_$(2)_H_$(3)) --lib -o $$@ $$< && touch $$@

$$(TLIB$(1)_T_$(2)_H_$(3))/$$(CFG_RUSTLLVM): \
		rustllvm/$(2)/$$(CFG_RUSTLLVM)
	@$$(call E, cp: $$@)
	$$(Q)cp $$< $$@

$$(TBIN$(1)_T_$(2)_H_$(3))/rustc$$(X):				\
		$$(RUSTC_INPUTS)                                \
		$$(TLIBRUSTC_DEFAULT$(1)_T_$(2)_H_$(3))
	@$$(call E, compile_and_link: $$@)
	$$(STAGE$(1)_T_$(2)_H_$(3))  -o $$@ $$<

$$(TLIB$(1)_T_$(2)_H_$(3))/$$(CFG_LIBRUSTC):		\
		$$(COMPILER_CRATE) $$(COMPILER_INPUTS)		\
		$$(TSREQ$(1)_T_$(2)_H_$(3))			\
		$$(TLIB$(1)_T_$(2)_H_$(3))/$$(CFG_RUSTLLVM)	\
		$$(TCORELIB_DEFAULT$(1)_T_$(2)_H_$(3))      \
		$$(TSTDLIB_DEFAULT$(1)_T_$(2)_H_$(3))
	@$$(call E, compile_and_link: $$@)
	$$(STAGE$(1)_T_$(2)_H_$(3))  --lib -o $$@ $$< && touch $$@

endef

# The stage0 (snapshot) compiler produces binaries that expect the
# snapshot runtime.  Therefore, the stage1 compiler and libraries
# (which are produced by stage0) should use the runtime from the
# snapshot.  The stage2 compiler and libraries (which are produced by
# stage1) will be the first that are expecting to run against the
# runtime as defined in the working directory.
#
# Arguments are the same as for TARGET_BASE_STAGE_N
define TARGET_RT_FROM_SNAPSHOT

$$(TLIB$(1)_T_$(2)_H_$(3))/$$(CFG_RUNTIME): \
		$$(HLIB$(1)_H_$(3))/$$(CFG_RUNTIME)
	@$$(call E, cp: $$@)
	$$(Q)cp $$< $$@

endef

# This rule copies from the runtime for the working directory.  It
# applies to targets produced by stage1 or later.  See comment on
# previous rule.
#
# Arguments are the same as for TARGET_BASE_STAGE_N
define TARGET_RT_FROM_WD

$$(TLIB$(1)_T_$(2)_H_$(3))/$$(CFG_RUNTIME): \
		rt/$(2)/$$(CFG_RUNTIME)
	@$$(call E, cp: $$@)
	$$(Q)cp $$< $$@

endef

# In principle, each host can build each target:
$(foreach source,$(CFG_TARGET_TRIPLES),						\
 $(foreach target,$(CFG_TARGET_TRIPLES),					\
  $(eval $(call TARGET_STAGE_N,0,$(target),$(source)))		\
  $(eval $(call TARGET_STAGE_N,1,$(target),$(source)))		\
  $(eval $(call TARGET_STAGE_N,2,$(target),$(source)))		\
  $(eval $(call TARGET_STAGE_N,3,$(target),$(source)))))

$(eval $(call TARGET_RT_FROM_SNAPSHOT,0,$(CFG_HOST_TRIPLE),$(CFG_HOST_TRIPLE)))

$(foreach source,$(CFG_TARGET_TRIPLES),						\
 $(foreach target,$(CFG_TARGET_TRIPLES),					\
  $(eval $(call TARGET_RT_FROM_WD,1,$(target),$(source)))	\
  $(eval $(call TARGET_RT_FROM_WD,2,$(target),$(source)))	\
  $(eval $(call TARGET_RT_FROM_WD,3,$(target),$(source)))))