rust/mk/stageN.mk

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# StageN template: arg 1 is the N we're building *from*, arg 2 is N+1.
#
# The easiest way to read this template is to assume we're building stage2
# using stage1, and mentally gloss $(1) as 1, $(2) as 2.
#
# LIBGEN is pulled out seperately because we need to specially invoke
# it to build stage0/lib/libstd using stage0/rustc and to use the
# new rustrt in stage0/lib/.
define LIBGEN
stage$(2)/lib/$$(CFG_STDLIB): $$(STDLIB_CRATE) $$(STDLIB_INPUTS) \
stage$(2)/rustc$$(X) \
stage$(2)/$$(CFG_RUNTIME) \
stage$(2)/$$(CFG_RUSTLLVM) \
stage$(2)/lib/glue.o \
$$(SREQ$(1))
@$$(call E, compile_and_link: $$@)
$$(STAGE$(2)) --lib -o $$@ $$<
stage$(2)/lib/libstd.rlib: $$(STDLIB_CRATE) $$(STDLIB_INPUTS) \
stage$(2)/rustc$$(X) \
stage$(2)/$$(CFG_RUNTIME) \
stage$(2)/$$(CFG_RUSTLLVM) \
stage$(2)/lib/glue.o \
$$(SREQ$(1))
@$$(call E, compile_and_link: $$@)
$$(STAGE$(2)) --lib --static -o $$@ $$<
stage$(2)/lib/$$(CFG_RUNTIME): rt/$$(CFG_RUNTIME)
@$$(call E, cp: $$@)
$$(Q)cp $$< $$@
endef
define STAGEN
# Host libraries and executables (stage$(2)/rustc and its runtime needs)
#
# NB: Due to make not wanting to run the same implicit rules twice on the same
# rule tree (implicit-rule recursion prevention, see "Chains of Implicit
# Rules" in GNU Make manual) we have to re-state the %.o and %.s patterns here
# for different directories, to handle cases where (say) a test relies on a
# compiler that relies on a .o file.
STAGE$(2) := $$(Q)$$(call CFG_RUN_TARG,stage$(2), \
$$(CFG_VALGRIND_COMPILE) stage$(2)/rustc$$(X) \
$$(CFG_RUSTC_FLAGS))
PERF_STAGE$(2) := $$(Q)$$(call CFG_RUN_TARG,stage$(2), \
$$(CFG_PERF_TOOL) stage$(2)/rustc$$(X) \
$$(CFG_RUSTC_FLAGS))
stage$(2)/%.o: stage$(2)/%.s
@$$(call E, assemble [gcc]: $$@)
$$(Q)gcc $$(CFG_GCCISH_CFLAGS) -o $$@ -c $$<
stage$(2)/rustc$$(X): $$(COMPILER_CRATE) $$(COMPILER_INPUTS) \
stage$(2)/$$(CFG_RUNTIME) \
$$(call CFG_STDLIB_DEFAULT,stage$(1),stage$(2)) \
stage$(2)/$$(CFG_RUSTLLVM) \
$$(SREQ$(1))
@$$(call E, compile_and_link: $$@)
$$(STAGE$(1)) -L stage$(2) -o $$@ $$<
stage$(2)/$$(CFG_RUNTIME): rt/$$(CFG_RUNTIME)
@$$(call E, cp: $$@)
$$(Q)cp $$< $$@
stage$(2)/$$(CFG_STDLIB): stage$(1)/lib/$$(CFG_STDLIB)
@$$(call E, cp: $$@)
$$(Q)cp $$< $$@
stage$(2)/$$(CFG_RUSTLLVM): rustllvm/$$(CFG_RUSTLLVM)
@$$(call E, cp: $$@)
$$(Q)cp $$< $$@
# Target libraries (for binaries generated by stage$(2)/rustc)
stage$(2)/lib/intrinsics.bc: $$(INTRINSICS_BC)
@$$(call E, cp: $$@)
$$(Q)cp $$< $$@
stage$(2)/lib/glue.o: stage$(2)/rustc$$(X) \
stage$(2)/$$(CFG_RUNTIME) \
stage$(2)/$$(CFG_RUSTLLVM) \
stage$(2)/lib/intrinsics.bc \
$$(SREQ$(1))
@$$(call E, generate: $$@)
$$(STAGE$(2)) -c -o $$@ --glue
$(eval $(call LIBGEN,$(1),$(2)))
stage$(2)/lib/main.o: rt/main.o
@$$(call E, cp: $$@)
$$(Q)cp $$< $$@
stage$(2)/lib/$$(CFG_LIBRUSTC): $$(COMPILER_CRATE) $$(COMPILER_INPUTS) \
$$(SREQ$(2))
@$$(call E, compile_and_link: $$@)
$$(STAGE$(2)) --lib -o $$@ $$<
endef
# Instantiate template for 0->1, 1->2, 2->3 build dirs
$(eval $(call STAGEN,0,1))
$(eval $(call STAGEN,1,2))
$(eval $(call STAGEN,2,3))