mk/rt.mk - third_party/rust - Git at Google

 # This is a procedure to define the targets for building
 # the runtime.
 #
 # Argument 1 is the target triple.
 #
 # This is not really the right place to explain this, but
 # for those of you who are not Makefile gurus, let me briefly
 # cover the $ expansion system in use here, because it
 # confused me for a while!  The variable DEF_RUNTIME_TARGETS
 # will be defined once and then expanded with different
 # values substituted for $(1) each time it is called.
 # That resulting text is then eval'd.
 #
 # For most variables, you could use a single $ sign.  The result
 # is that the substitution would occur when the CALL occurs,
 # I believe.  The problem is that the automatic variables $< and $@
 # need to be expanded-per-rule.  Therefore, for those variables at
 # least, you need $$< and $$@ in the variable text.  This way, after
 # the CALL substitution occurs, you will have $< and $@.  This text
 # will then be evaluated, and all will work as you like.
 #
 # Reader beware, this explanantion could be wrong, but it seems to
 # fit the experimental data (i.e., I was able to get the system
 # working under these assumptions).

 # Hack for passing flags into LIBUV, see below.
 LIBUV_FLAGS_i386 = -m32 -fPIC
 LIBUV_FLAGS_x86_64 = -m64 -fPIC

 # when we're doing a snapshot build, we intentionally degrade as many
 # features in libuv and the runtime as possible, to ease portability.

 SNAP_DEFINES:=
 ifneq ($(strip $(findstring snap,$(MAKECMDGOALS))),)
 	SNAP_DEFINES=-DRUST_SNAPSHOT
 endif


 define DEF_RUNTIME_TARGETS

 ######################################################################
 # Runtime (C++) library variables
 ######################################################################

 RUNTIME_CS_$(1) := \
               rt/sync/timer.cpp \
               rt/sync/lock_and_signal.cpp \
               rt/sync/rust_thread.cpp \
               rt/rust.cpp \
               rt/rust_builtin.cpp \
               rt/rust_run_program.cpp \
               rt/rust_env.cpp \
               rt/rust_sched_loop.cpp \
               rt/rust_sched_launcher.cpp \
               rt/rust_sched_driver.cpp \
               rt/rust_scheduler.cpp \
               rt/rust_sched_reaper.cpp \
               rt/rust_task.cpp \
               rt/rust_stack.cpp \
               rt/rust_port.cpp \
               rt/rust_upcall.cpp \
               rt/rust_uv.cpp \
               rt/rust_crate_map.cpp \
               rt/rust_log.cpp \
               rt/rust_gc_metadata.cpp \
               rt/rust_port_selector.cpp \
               rt/rust_util.cpp \
               rt/circular_buffer.cpp \
               rt/isaac/randport.cpp \
               rt/miniz.cpp \
               rt/rust_kernel.cpp \
               rt/rust_shape.cpp \
               rt/rust_abi.cpp \
               rt/rust_debug.cpp \
               rt/rust_box_annihilator.cpp \
               rt/memory_region.cpp \
               rt/boxed_region.cpp \
               rt/arch/$$(HOST_$(1))/context.cpp \
               rt/arch/$$(HOST_$(1))/gpr.cpp

 RUNTIME_S_$(1) := rt/arch/$$(HOST_$(1))/_context.S \
                   rt/arch/$$(HOST_$(1))/ccall.S \
                   rt/arch/$$(HOST_$(1))/record_sp.S

 ifeq ($$(HOST_$(1)), i386)
   LIBUV_ARCH_$(1) := ia32
 else
   LIBUV_ARCH_$(1) := x86_64
 endif

 ifeq ($$(CFG_WINDOWSY), 1)
   LIBUV_OSTYPE_$(1) := win
   LIBUV_LIB_$(1) := rt/$(1)/libuv/Release/obj.target/src/libuv/libuv.a
 else ifeq ($(CFG_OSTYPE), apple-darwin)
   LIBUV_OSTYPE_$(1) := mac
   LIBUV_LIB_$(1) := rt/$(1)/libuv/Release/libuv.a
 else ifeq ($(CFG_OSTYPE), unknown-freebsd)
   LIBUV_OSTYPE_$(1) := unix/freebsd
   LIBUV_LIB_$(1) := rt/$(1)/libuv/Release/obj.target/src/libuv/libuv.a
 else
   LIBUV_OSTYPE_$(1) := unix/linux
   LIBUV_LIB_$(1) := rt/$(1)/libuv/Release/obj.target/src/libuv/libuv.a
 endif

 RUNTIME_DEF_$(1) := rt/rustrt$$(CFG_DEF_SUFFIX)
 RUNTIME_INCS_$(1) := -I $$(S)src/rt -I $$(S)src/rt/isaac -I $$(S)src/rt/uthash \
                 -I $$(S)src/rt/arch/$$(HOST_$(1)) \
 				-I $$(S)src/libuv/include
 RUNTIME_OBJS_$(1) := $$(RUNTIME_CS_$(1):rt/%.cpp=rt/$(1)/%.o) \
                      $$(RUNTIME_S_$(1):rt/%.S=rt/$(1)/%.o)
 ALL_OBJ_FILES += $$(RUNTIME_OBJS_$(1))

 MORESTACK_OBJ_$(1) := rt/$(1)/arch/$$(HOST_$(1))/morestack.o
 ALL_OBJ_FILES += $$(MORESTACK_OBJS_$(1))

 RUNTIME_LIBS_$(1) := $$(LIBUV_LIB_$(1))

 rt/$(1)/%.o: rt/%.cpp $$(MKFILE_DEPS)
 	@$$(call E, compile: $$@)
 	$$(Q)$$(call CFG_COMPILE_C_$(1), $$@, $$(RUNTIME_INCS_$(1)) \
                  $$(SNAP_DEFINES)) $$<

 rt/$(1)/%.o: rt/%.S  $$(MKFILE_DEPS) \
                      $$(LLVM_CONFIG_$$(CFG_HOST_TRIPLE))
 	@$$(call E, compile: $$@)
 	$$(Q)$$(call CFG_ASSEMBLE_$(1),$$@,$$<)

 rt/$(1)/arch/$$(HOST_$(1))/libmorestack.a: $$(MORESTACK_OBJ_$(1))
 	@$$(call E, link: $$@)
 	$$(Q)ar rcs $$@ $$<

 rt/$(1)/$(CFG_RUNTIME): $$(RUNTIME_OBJS_$(1)) $$(MKFILE_DEPS) \
                         $$(RUNTIME_DEF_$(1)) \
                         $$(RUNTIME_LIBS_$(1))
 	@$$(call E, link: $$@)
 	$$(Q)$$(call CFG_LINK_C_$(1),$$@, $$(RUNTIME_OBJS_$(1)) \
 	  $$(CFG_GCCISH_POST_LIB_FLAGS) $$(RUNTIME_LIBS_$(1)) \
 	  $$(CFG_LIBUV_LINK_FLAGS),$$(RUNTIME_DEF_$(1)),$$(CFG_RUNTIME))

 # FIXME: For some reason libuv's makefiles can't figure out the
 # correct definition of CC on the mingw I'm using, so we are
 # explicitly using gcc. Also, we have to list environment variables
 # first on windows... mysterious

 ifdef CFG_ENABLE_FAST_MAKE
 LIBUV_DEPS := $$(S)/.gitmodules
 else
 LIBUV_DEPS := $$(wildcard \
               $$(S)src/libuv/* \
               $$(S)src/libuv/*/* \
               $$(S)src/libuv/*/*/* \
               $$(S)src/libuv/*/*/*/*)
 endif

 $$(LIBUV_LIB_$(1)): $$(LIBUV_DEPS)
 	$$(Q)$$(MAKE) -C $$(S)mk/libuv/$$(LIBUV_ARCH_$(1))/$$(LIBUV_OSTYPE_$(1)) \
 		CFLAGS="$$(LIBUV_FLAGS_$$(HOST_$(1))) $$(SNAP_DEFINES)" \
         LDFLAGS="$$(LIBUV_FLAGS_$$(HOST_$(1)))" \
 		CC="$$(CFG_GCCISH_CROSS)$$(CC)" \
 		CXX="$$(CFG_GCCISH_CROSS)$$(CXX)" \
 		AR="$$(CFG_GCCISH_CROSS)$$(AR)" \
 		BUILDTYPE=Release \
 		builddir_name="$$(CFG_BUILD_DIR)/rt/$(1)/libuv" \
 		V=$$(VERBOSE) FLOCK= uv

 # These could go in rt.mk or rustllvm.mk, they're needed for both.

 # This regexp has a single $, escaped twice
 %.bsd.def:    %.def.in $$(MKFILE_DEPS)
 	@$$(call E, def: $$@)
 	$$(Q)echo "{" > $$@
 	$$(Q)sed 's/.$$$$/&;/' $$< >> $$@
 	$$(Q)echo "};" >> $$@

 %.linux.def:    %.def.in $$(MKFILE_DEPS)
 	@$$(call E, def: $$@)
 	$$(Q)echo "{" > $$@
 	$$(Q)sed 's/.$$$$/&;/' $$< >> $$@
 	$$(Q)echo "};" >> $$@

 %.darwin.def:	%.def.in $$(MKFILE_DEPS)
 	@$$(call E, def: $$@)
 	$$(Q)sed 's/^./_&/' $$< > $$@

 ifdef CFG_WINDOWSY
 %.def:	%.def.in $$(MKFILE_DEPS)
 	@$$(call E, def: $$@)
 	$$(Q)echo LIBRARY $$* > $$@
 	$$(Q)echo EXPORTS >> $$@
 	$$(Q)sed 's/^./    &/' $$< >> $$@
 endif

 endef

 # Instantiate template for all stages
 $(foreach target,$(CFG_TARGET_TRIPLES), \
  $(eval $(call DEF_RUNTIME_TARGETS,$(target))))
	# This is a procedure to define the targets for building
	# the runtime.
	#
	# Argument 1 is the target triple.
	#
	# This is not really the right place to explain this, but
	# for those of you who are not Makefile gurus, let me briefly
	# cover the $ expansion system in use here, because it
	# confused me for a while! The variable DEF_RUNTIME_TARGETS
	# will be defined once and then expanded with different
	# values substituted for $(1) each time it is called.
	# That resulting text is then eval'd.
	#
	# For most variables, you could use a single $ sign. The result
	# is that the substitution would occur when the CALL occurs,
	# I believe. The problem is that the automatic variables $< and $@
	# need to be expanded-per-rule. Therefore, for those variables at
	# least, you need $$< and $$@ in the variable text. This way, after
	# the CALL substitution occurs, you will have $< and $@. This text
	# will then be evaluated, and all will work as you like.
	#
	# Reader beware, this explanantion could be wrong, but it seems to
	# fit the experimental data (i.e., I was able to get the system
	# working under these assumptions).

	# Hack for passing flags into LIBUV, see below.
	LIBUV_FLAGS_i386 = -m32 -fPIC
	LIBUV_FLAGS_x86_64 = -m64 -fPIC

	# when we're doing a snapshot build, we intentionally degrade as many
	# features in libuv and the runtime as possible, to ease portability.

	SNAP_DEFINES:=
	ifneq ($(strip $(findstring snap,$(MAKECMDGOALS))),)
	SNAP_DEFINES=-DRUST_SNAPSHOT
	endif


	define DEF_RUNTIME_TARGETS

	######################################################################
	# Runtime (C++) library variables
	######################################################################

	RUNTIME_CS_$(1) := \
	rt/sync/timer.cpp \
	rt/sync/lock_and_signal.cpp \
	rt/sync/rust_thread.cpp \
	rt/rust.cpp \
	rt/rust_builtin.cpp \
	rt/rust_run_program.cpp \
	rt/rust_env.cpp \
	rt/rust_sched_loop.cpp \
	rt/rust_sched_launcher.cpp \
	rt/rust_sched_driver.cpp \
	rt/rust_scheduler.cpp \
	rt/rust_sched_reaper.cpp \
	rt/rust_task.cpp \
	rt/rust_stack.cpp \
	rt/rust_port.cpp \
	rt/rust_upcall.cpp \
	rt/rust_uv.cpp \
	rt/rust_crate_map.cpp \
	rt/rust_log.cpp \
	rt/rust_gc_metadata.cpp \
	rt/rust_port_selector.cpp \
	rt/rust_util.cpp \
	rt/circular_buffer.cpp \
	rt/isaac/randport.cpp \
	rt/miniz.cpp \
	rt/rust_kernel.cpp \
	rt/rust_shape.cpp \
	rt/rust_abi.cpp \
	rt/rust_debug.cpp \
	rt/rust_box_annihilator.cpp \
	rt/memory_region.cpp \
	rt/boxed_region.cpp \
	rt/arch/$$(HOST_$(1))/context.cpp \
	rt/arch/$$(HOST_$(1))/gpr.cpp

	RUNTIME_S_$(1) := rt/arch/$$(HOST_$(1))/_context.S \
	rt/arch/$$(HOST_$(1))/ccall.S \
	rt/arch/$$(HOST_$(1))/record_sp.S

	ifeq ($$(HOST_$(1)), i386)
	LIBUV_ARCH_$(1) := ia32
	else
	LIBUV_ARCH_$(1) := x86_64
	endif

	ifeq ($$(CFG_WINDOWSY), 1)
	LIBUV_OSTYPE_$(1) := win
	LIBUV_LIB_$(1) := rt/$(1)/libuv/Release/obj.target/src/libuv/libuv.a
	else ifeq ($(CFG_OSTYPE), apple-darwin)
	LIBUV_OSTYPE_$(1) := mac
	LIBUV_LIB_$(1) := rt/$(1)/libuv/Release/libuv.a
	else ifeq ($(CFG_OSTYPE), unknown-freebsd)
	LIBUV_OSTYPE_$(1) := unix/freebsd
	LIBUV_LIB_$(1) := rt/$(1)/libuv/Release/obj.target/src/libuv/libuv.a
	else
	LIBUV_OSTYPE_$(1) := unix/linux
	LIBUV_LIB_$(1) := rt/$(1)/libuv/Release/obj.target/src/libuv/libuv.a
	endif

	RUNTIME_DEF_$(1) := rt/rustrt$$(CFG_DEF_SUFFIX)
	RUNTIME_INCS_$(1) := -I $$(S)src/rt -I $$(S)src/rt/isaac -I $$(S)src/rt/uthash \
	-I $$(S)src/rt/arch/$$(HOST_$(1)) \
	-I $$(S)src/libuv/include
	RUNTIME_OBJS_$(1) := $$(RUNTIME_CS_$(1):rt/%.cpp=rt/$(1)/%.o) \
	$$(RUNTIME_S_$(1):rt/%.S=rt/$(1)/%.o)
	ALL_OBJ_FILES += $$(RUNTIME_OBJS_$(1))

	MORESTACK_OBJ_$(1) := rt/$(1)/arch/$$(HOST_$(1))/morestack.o
	ALL_OBJ_FILES += $$(MORESTACK_OBJS_$(1))

	RUNTIME_LIBS_$(1) := $$(LIBUV_LIB_$(1))

	rt/$(1)/%.o: rt/%.cpp $$(MKFILE_DEPS)
	@$$(call E, compile: $$@)
	$$(Q)$$(call CFG_COMPILE_C_$(1), $$@, $$(RUNTIME_INCS_$(1)) \
	$$(SNAP_DEFINES)) $$<

	rt/$(1)/%.o: rt/%.S $$(MKFILE_DEPS) \
	$$(LLVM_CONFIG_$$(CFG_HOST_TRIPLE))
	@$$(call E, compile: $$@)
	$$(Q)$$(call CFG_ASSEMBLE_$(1),$$@,$$<)

	rt/$(1)/arch/$$(HOST_$(1))/libmorestack.a: $$(MORESTACK_OBJ_$(1))
	@$$(call E, link: $$@)
	$$(Q)ar rcs $$@ $$<

	rt/$(1)/$(CFG_RUNTIME): $$(RUNTIME_OBJS_$(1)) $$(MKFILE_DEPS) \
	$$(RUNTIME_DEF_$(1)) \
	$$(RUNTIME_LIBS_$(1))
	@$$(call E, link: $$@)
	$$(Q)$$(call CFG_LINK_C_$(1),$$@, $$(RUNTIME_OBJS_$(1)) \
	$$(CFG_GCCISH_POST_LIB_FLAGS) $$(RUNTIME_LIBS_$(1)) \
	$$(CFG_LIBUV_LINK_FLAGS),$$(RUNTIME_DEF_$(1)),$$(CFG_RUNTIME))

	# FIXME: For some reason libuv's makefiles can't figure out the
	# correct definition of CC on the mingw I'm using, so we are
	# explicitly using gcc. Also, we have to list environment variables
	# first on windows... mysterious

	ifdef CFG_ENABLE_FAST_MAKE
	LIBUV_DEPS := $$(S)/.gitmodules
	else
	LIBUV_DEPS := $$(wildcard \
	$$(S)src/libuv/* \
	$$(S)src/libuv// \
	$$(S)src/libuv///* \
	$$(S)src/libuv////)
	endif

	$$(LIBUV_LIB_$(1)): $$(LIBUV_DEPS)
	$$(Q)$$(MAKE) -C $$(S)mk/libuv/$$(LIBUV_ARCH_$(1))/$$(LIBUV_OSTYPE_$(1)) \
	CFLAGS="$$(LIBUV_FLAGS_$$(HOST_$(1))) $$(SNAP_DEFINES)" \
	LDFLAGS="$$(LIBUV_FLAGS_$$(HOST_$(1)))" \
	CC="$$(CFG_GCCISH_CROSS)$$(CC)" \
	CXX="$$(CFG_GCCISH_CROSS)$$(CXX)" \
	AR="$$(CFG_GCCISH_CROSS)$$(AR)" \
	BUILDTYPE=Release \
	builddir_name="$$(CFG_BUILD_DIR)/rt/$(1)/libuv" \
	V=$$(VERBOSE) FLOCK= uv

	# These could go in rt.mk or rustllvm.mk, they're needed for both.

	# This regexp has a single $, escaped twice
	%.bsd.def: %.def.in $$(MKFILE_DEPS)
	@$$(call E, def: $$@)
	$$(Q)echo "{" > $$@
	$$(Q)sed 's/.$$$$/&;/' $$< >> $$@
	$$(Q)echo "};" >> $$@

	%.linux.def: %.def.in $$(MKFILE_DEPS)
	@$$(call E, def: $$@)
	$$(Q)echo "{" > $$@
	$$(Q)sed 's/.$$$$/&;/' $$< >> $$@
	$$(Q)echo "};" >> $$@

	%.darwin.def: %.def.in $$(MKFILE_DEPS)
	@$$(call E, def: $$@)
	$$(Q)sed 's/^./_&/' $$< > $$@

	ifdef CFG_WINDOWSY
	%.def: %.def.in $$(MKFILE_DEPS)
	@$$(call E, def: $$@)
	$$(Q)echo LIBRARY $$* > $$@
	$$(Q)echo EXPORTS >> $$@
	$$(Q)sed 's/^./ &/' $$< >> $$@
	endif

	endef

	# Instantiate template for all stages
	$(foreach target,$(CFG_TARGET_TRIPLES), \
	$(eval $(call DEF_RUNTIME_TARGETS,$(target))))