Makefile.in

# Recursive wildcard function
# http://blog.jgc.org/2011/07/gnu-make-recursive-wildcard-function.html
rwildcard=$(foreach d,$(wildcard $1*),$(call rwildcard,$d/,$2) \
  $(filter $(subst *,%,$2),$d))

include config.mk

# Target-and-rule "utility variables"
ifdef VERBOSE
  Q :=
  E =
else
  Q := @
  E = echo $(1)
endif

S := $(CFG_SRC_DIR)
B := $(CFG_BUILD_DIR)

#VPATH := $(S)src

# Delete the built-in rules.
.SUFFIXES:
%:: %,v
%:: RCS/%,v
%:: RCS/%
%:: s.%
%:: SCCS/s.%

MKFILE_DEPS := config.stamp $(call rwildcard,$(S)mk/,*)

# Enable debug!() etc even without configure --enable-debug
# The evaluation of these prints & their arguments is controlled
# at runtime by the environment variable RUST_LOG.
CFG_RUSTC_FLAGS += --cfg debug

ifdef CFG_DISABLE_OPTIMIZE
  $(info cfg: disabling rustc optimization (CFG_DISABLE_OPTIMIZE))
  CFG_RUSTC_FLAGS +=
else
  CFG_RUSTC_FLAGS += -O
endif

ifdef CFG_ENABLE_DEBUG
  $(info cfg: enabling more debugging (CFG_ENABLE_DEBUG))
  CFG_RUSTC_FLAGS +=
  CFG_GCCISH_CFLAGS += -DRUST_DEBUG
else
  CFG_GCCISH_CFLAGS += -DRUST_NDEBUG
endif

export CFG_RUSTC
export CFG_RUSTC_FLAGS
export CFG_LOCAL_RUSTC
export CFG_ENABLE_DEBUG
export RUSTC=$(CFG_RUSTC)
export RUSTFLAGS=$(CFG_RUSTC_FLAGS)
export CC=$(CFG_CC)
export CXX=$(CFG_CXX)
export LD=$(CFG_LD)
export AR=$(CFG_AR)
export RANLIB=$(CFG_RANLIB)
export PATH=$(CFG_PATH)
export CFG_ANDROID_SDK_PATH
export CFG_OSTYPE
export CFG_CPUTYPE

######################################################################
# Re-configuration
######################################################################

ifndef CFG_DISABLE_MANAGE_SUBMODULES
# This is a pretty expensive operation but I don't see any way to avoid it
NEED_GIT_RECONFIG=$(shell cd "$(S)" && "$(CFG_GIT)" submodule status | grep -c '^\(+\|-\)')
else
NEED_GIT_RECONFIG=0
endif

ifeq ($(NEED_GIT_RECONFIG),0)
else
# If the submodules have changed then always execute config.mk
.PHONY: $(S)config.stamp
endif

$(S)Makefile $(S)config.mk: $(S)config.stamp

$(S)config.stamp : $(S)configure $(S)Makefile.in
	@$(call E, cfg: reconfiguring)
	$(Q)$(S)configure $(CFG_CONFIGURE_ARGS)

# Build the compiler
ifneq ($(CFG_LOCAL_RUSTC),1)
$(CFG_RUSTC):
	@$(call E, building rustc)
	$(Q)$(MAKE) -C "$(CFG_BUILD_DIR)src/compiler/rust" CFG_RUSTC_FLAGS="" RUSTFLAGS="" CC=gcc CXX=g++ LD=ld AR=ar

clean-rust:
	@$(call E, cleaning rustc)
	$(Q)$(MAKE) -C "$(CFG_BUILD_DIR)src/compiler/rust" CFG_RUSTC_FLAGS="" RUSTFLAGS="" clean

else
$(CFG_RUSTC):

clean-rust:

endif

$(B)/src/compiler/rust/rust-auto-clean-stamp: $(S)src/compiler/rust-auto-clean-trigger
	$(Q)$(MAKE) clean-rust
	touch $@

rust: $(CFG_RUSTC)

# Strip off submodule paths to determine "raw" submodule names.
SUBMODULES=$(shell echo $(CFG_SUBMODULES) | perl -p -e 's![A-Za-z0-9_-]+/!!g')

# Define e.g. PATH_rust-io-surface = platform/macos/rust-io-surface
$(foreach submodule,$(CFG_SUBMODULES),\
$(eval PATH_$(shell echo $(submodule) | perl -p -e 's![A-Za-z0-9_-]+/!!g') = $(submodule)))

define DEF_SUBMODULE_VARS

#defaults 
DEPS_$(1) =
CFLAGS_$(1) = -O2

#if global cflags set, inherit that
ifneq ($$(CFLAGS),)
	CFLAGS_$(1) = $$(CFLAGS) 
endif

# any "done" dummy files must be named libSOMETHING.dummy. 
#
# We can't auto-compute this, because some modules have lib* prefix in
# their name already, while others don't.
DONE_$(1) = $$(B)src/$$(PATH_$(1))/lib*.dummy
DEPS_SUBMODULES += $$(PATH_$(1))
DEPS_SUBMODULES += $$(PATH_$(1))/.libs
DEPS_SUBMODULES += $$(PATH_$(1))/src/.libs
endef

# these will get populated.
DEPS_SUBMODULES =

$(foreach submodule,$(SUBMODULES),\
$(eval $(call DEF_SUBMODULE_VARS,$(submodule))))

# include submodule dependencies configuration
include $(S)mk/sub.mk

# Define how to make submodule targets
define DEF_SUBMODULE_RULES

ENV_RLDFLAGS_$(1) = $$(foreach dep,$$(DEPS_$(1)),-L $$(B)src/$$(PATH_$$(dep)) -L $$(B)src/$$(PATH_$$(dep))/.libs -L $$(B)src/$$(PATH_$$(dep))/src/.libs)

# variables that depend on dependency definitions from sub.mk!
ENV_CFLAGS_$(1) = CFLAGS="$$(CFLAGS_$(1))"
ENV_RFLAGS_$(1) = RUSTFLAGS="$$(strip $$(CFG_RUSTC_FLAGS)) $$(ENV_RLDFLAGS_$(1))"

# use a rough approximation of submodule dependencies to trigger calling submodule make
# whenever a submodule changes
# TODO: this may be a bit brutish, but is there a better way?
ROUGH_DEPS_$(1)=$$(call rwildcard,$$(S)src/$$(PATH_$(1)),*h *c *cpp *rs *rc)
DONE_DEPS_$(1)=$$(foreach dep,$$(DEPS_$(1)),$$(DONE_$$(dep)))
# the main target for a submodule
# --

# Native builds do not depend on the rust compiler, so we can build them in parallel with rustc
ifneq "$$(filter $(1),$$(NATIVE_BUILDS))" "$(1)"
RUSTC_DEP_$(1)=$$(CFG_RUSTC)
endif

$$(DONE_$(1)) : $$(DONE_DEPS_$(1)) $$(ROUGH_DEPS_$(1)) $$(RUSTC_DEP_$(1))
#	@$$(call E, make: $(1))
#	@$$(call E, $(1) deps= $$(DEPS_$(1)))
#	@$$(call E, $(1) done_deps= $$(DONE_DEPS_$(1)))
#	@$$(call E, $(1) cflags= $$(ENV_CFLAGS_$(1)))
#	@$$(call E, $(1) cxxflags= $$(ENV_CXXFLAGS_$(1)))
#	@$$(call E, $(1) rflags= $$(ENV_RFLAGS_$(1)))

	$$(Q) \
	$$(ENV_CFLAGS_$(1)) \
	$$(ENV_CXXFLAGS_$(1)) \
	$$(ENV_RFLAGS_$(1)) \
	$$(MAKE) -C $$(B)src/$$(PATH_$(1)) && touch $$(DONE_$(1))

# main submodule target
$(1) : $$(DONE_$(1))
.PHONY : $(1)
.NOTPARALLEL : $(1)
endef

$(foreach submodule,$(SUBMODULES),\
$(eval $(call DEF_SUBMODULE_RULES,$(submodule))))

DONE_SUBMODULES = $(foreach submodule,$(SUBMODULES),$(DONE_$(submodule)))

RFLAGS_util = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES))
SRC_util = $(call rwildcard,$(S)src/components/util/,*.rs)
CRATE_util = $(S)src/components/util/util.rc
DONE_util = $(B)src/components/util/libutil.dummy

DEPS_util = $(CRATE_util) $(SRC_util) $(DONE_SUBMODULES)

RFLAGS_net = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/components/util
SRC_net = $(call rwildcard,$(S)src/components/net/,*.rs)
CRATE_net = $(S)src/components/net/net.rc
DONE_net = $(B)src/components/net/libnet.dummy

DEPS_net = $(CRATE_net) $(SRC_net) $(DONE_SUBMODULES) $(DONE_util)

RFLAGS_msg = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES))
SRC_msg = $(call rwildcard,$(S)src/components/msg/,*.rs)
CRATE_msg = $(S)src/components/msg/msg.rc
DONE_msg = $(B)src/components/msg/libmsg.dummy

DEPS_msg = $(CRATE_msg) $(SRC_msg) $(DONE_SUBMODULES)

RFLAGS_gfx = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/components/util -L $(B)src/components/net -L $(B)src/components/msg
SRC_gfx = $(call rwildcard,$(S)src/components/gfx/,*.rs)
CRATE_gfx = $(S)src/components/gfx/gfx.rc
DONE_gfx = $(B)src/components/gfx/libgfx.dummy

DEPS_gfx = $(CRATE_gfx) $(SRC_gfx) $(DONE_SUBMODULES) $(DONE_util) $(DONE_net) $(DONE_msg)

RFLAGS_script = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/components/util -L $(B)src/components/net -L $(B)src/components/gfx -L $(B)src/components/msg
WEBIDL_script = $(call rwildcard,$(S)src/components/script/,*.webidl)
AUTOGEN_SRC_script = $(patsubst %.webidl, %Binding.rs, $(WEBIDL_script))
SRC_script = $(call rwildcard,$(S)src/components/script/,*.rs) $(AUTOGEN_SRC_script)
CRATE_script = $(S)src/components/script/script.rc
DONE_script = $(B)src/components/script/libscript.dummy

DEPS_script = $(CRATE_script) $(SRC_script) $(DONE_SUBMODULES) $(DONE_util) $(DONE_net) $(DONE_gfx) $(DONE_msg)

RFLAGS_servo = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/components/gfx -L $(B)src/components/util -L $(B)src/components/net -L $(B)src/components/script -L $(B)src/components/msg

SRC_servo = $(call rwildcard,$(S)src/components/main/,*.rs)
CRATE_servo = $(S)src/components/main/servo.rc

DEPS_servo = $(CRATE_servo) $(SRC_servo) $(DONE_SUBMODULES) $(DONE_util) $(DONE_gfx) $(DONE_script) $(DONE_net) $(DONE_msg)

# rules that depend on having correct meta-target vars (DEPS_CLEAN, DEPS_servo, etc)
include $(S)mk/check.mk
include $(S)mk/clean.mk

.DEFAULT_GOAL := all
.PHONY:	all
all: $(B)/src/compiler/rust/rust-auto-clean-stamp servo package

# Servo helper libraries

$(DONE_util):	$(DEPS_util)
	@$(call E, compile: $@)
	$(Q)$(RUSTC) $(RFLAGS_util) --out-dir $(B)src/components/util $< && touch $@

$(DONE_net):	$(DEPS_net)
	@$(call E, compile: $@)
	$(Q)$(RUSTC) $(RFLAGS_net) --out-dir $(B)src/components/net $< && touch $@

$(DONE_msg):	$(DEPS_msg)
	@$(call E, compile: $@)
	$(Q)$(RUSTC) $(RFLAGS_msg) --out-dir $(B)src/components/msg $< && touch $@

$(DONE_gfx):	$(DEPS_gfx)
	@$(call E, compile: $@)
	$(Q)$(RUSTC) $(RFLAGS_gfx) --out-dir $(B)src/components/gfx $< && touch $@

$(DONE_script):	$(DEPS_script)
	@$(call E, compile: $@)
	$(Q)$(RUSTC) $(RFLAGS_script) --out-dir $(B)src/components/script $< && touch $@

BINDINGS_SRC = $(S)/src/components/script/dom/bindings/codegen

CACHE_DIR = $(BINDINGS_SRC)/_cache

bindinggen_dependencies := $(addprefix $(BINDINGS_SRC)/, BindingGen.py Bindings.conf Configuration.py CodegenRust.py parser/WebIDL.py ParserResults.pkl)

$(AUTOGEN_SRC_script): %Binding.rs: $(bindinggen_dependencies) \
                                   %.webidl
	@$(call E, "Maybe generating $(shell basename $@)...")
	$(Q)PYTHONDONTWRITEBYTECODE=1 $(CFG_PYTHON2) $(BINDINGS_SRC)/pythonpath.py \
	  -I$(BINDINGS_SRC)/parser -I$(BINDINGS_SRC)/ply \
	  -D$(BINDINGS_SRC) \
	  $(BINDINGS_SRC)/BindingGen.py rs \
	  $(BINDINGS_SRC)/Bindings.conf $*Binding $*.webidl
	$(Q)touch $@

globalgen_dependencies := $(addprefix $(BINDINGS_SRC)/, GlobalGen.py Bindings.conf Configuration.py CodegenRust.py parser/WebIDL.py) $(CACHE_DIR)/.done

$(CACHE_DIR)/.done:
	mkdir -p $(CACHE_DIR)
	@touch $@

$(BINDINGS_SRC)/ParserResults.pkl: $(globalgen_dependencies) \
                                   $(WEBIDL_script)
	$(Q)PYTHONDONTWRITEBYTECODE=1 $(CFG_PYTHON2) $(BINDINGS_SRC)/pythonpath.py \
	  -I$(BINDINGS_SRC)/parser -I$(BINDINGS_SRC)/ply \
	  -D$(BINDINGS_SRC) \
	  $(BINDINGS_SRC)/GlobalGen.py $(BINDINGS_SRC)/Bindings.conf . \
	  --cachedir=$(CACHE_DIR) \
	  $(WEBIDL_script)

# Servo binaries

ifneq ($(CFG_OSTYPE),linux-androideabi)
servo:	$(DEPS_servo)
	@$(call E, compile: $@)
	$(Q)$(RUSTC) $(RFLAGS_servo) -o $@ $< --bin
else
servo:  $(DEPS_servo)
	@$(call E, compile: $@)
	$(Q)$(RUSTC) $(RFLAGS_servo) -o $@ $< --lib
endif

# Darwin app packaging

ifeq ($(CFG_OSTYPE),apple-darwin)

package: servo
	mkdir -p Servo.app/Contents/MacOS/src/platform/macos/rust-cocoa
	mkdir -p Servo.app/Contents/MacOS/src/support/azure/rust-azure
	cp $(S)Info.plist Servo.app/Contents/
	cp servo Servo.app/Contents/MacOS/
	cp $(B)src/platform/macos/rust-cocoa/lib*.dylib Servo.app/Contents/MacOS/src/platform/macos/rust-cocoa/
	cp $(B)src/support/azure/rust-azure/lib*.dylib Servo.app/Contents/MacOS/src/support/azure/rust-azure/

else

bindings: $(AUTOGEN_SRC_script)

.PHONY: package
package:

endif

# Build commands for backing up and restoring the Rust build.
# Because Rust takes a very long time to build and changes infrequently,
# the bots want to reuse it between builds. They can do so by running
# `make backup-rust` and `make restore-rust`.
#
# backup-rust is run before the build directory is cleaned. if it fails, that's ok.
#
# restore-rust is run after configure and before invoking make. if it fails, we must abort.

.PHONY: backup-rust restore-rust
backup-rust:
	-mv $(B)src/compiler/rust ../$(CFG_TARGET_TRIPLES)

restore-rust:
	if [ -d ../$(CFG_TARGET_TRIPLES) ]; then rm -rf $(B)src/compiler/rust; mv ../$(CFG_TARGET_TRIPLES) $(B)src/compiler/rust; fi