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# -*- makefile -*-
# vim:set ts=8 sw=8 sts=8 noet:
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

# Defines main targets for driving the Firefox build system.
#
# This make file should not be invoked directly. Instead, use
# `mach` (likely `mach build`) for invoking the build system.
#
# Options:
#   MOZ_OBJDIR           - Destination object directory
#   MOZ_MAKE_FLAGS       - Flags to pass to $(MAKE)
#
#######################################################################
# Defines

ifdef MACH
ifndef NO_BUILDSTATUS_MESSAGES
define BUILDSTATUS
@echo 'BUILDSTATUS $1'

endef
endif
endif


CWD := $(CURDIR)

ifeq "$(CWD)" "/"
CWD   := /.
endif

PYTHON ?= $(shell which python2.7 > /dev/null 2>&1 && echo python2.7 || echo python)

####################################
# Load mozconfig Options

include $(OBJDIR)/.mozconfig-client-mk

ifdef MOZ_PARALLEL_BUILD
  MOZ_MAKE_FLAGS := $(filter-out -j%,$(MOZ_MAKE_FLAGS))
  MOZ_MAKE_FLAGS += -j$(MOZ_PARALLEL_BUILD)
endif

# Automatically add -jN to make flags if not defined. N defaults to number of cores.
ifeq (,$(findstring -j,$(MOZ_MAKE_FLAGS)))
  cores=$(shell $(PYTHON) -c 'import multiprocessing; print(multiprocessing.cpu_count())')
  MOZ_MAKE_FLAGS += -j$(cores)
endif

ifdef MOZ_AUTOMATION
ifeq (4.0,$(firstword $(sort 4.0 $(MAKE_VERSION))))
MOZ_MAKE_FLAGS += --output-sync=line
endif
endif

MOZ_MAKE = $(MAKE) $(MOZ_MAKE_FLAGS) -C $(OBJDIR)

# 'configure' scripts generated by autoconf.
CONFIGURES := $(TOPSRCDIR)/configure
CONFIGURES += $(TOPSRCDIR)/js/src/configure

#######################################################################
# Rules

# The default rule is build
build::

ifndef MACH
$(error client.mk must be used via `mach`. Try running \
`./mach $(firstword $(MAKECMDGOALS) $(.DEFAULT_GOAL))`)
endif

# In automation, manage an sccache daemon. The starting of the server
# needs to be in a make file so sccache inherits the jobserver.
ifdef MOZBUILD_MANAGE_SCCACHE_DAEMON
build::
	# Terminate any sccache server that might still be around.
	-$(MOZBUILD_MANAGE_SCCACHE_DAEMON) --stop-server > /dev/null 2>&1
	# Start a new server, ensuring it gets the jobserver file descriptors
	# from make (but don't use the + prefix when make -n is used, so that
	# the command doesn't run in that case)
	$(if $(findstring n,$(filter-out --%, $(MAKEFLAGS))),,+)env RUST_LOG=sccache::compiler=debug SCCACHE_ERROR_LOG=$(OBJDIR)/dist/sccache.log $(MOZBUILD_MANAGE_SCCACHE_DAEMON) --start-server
endif

####################################
# Configure

MAKEFILE      = $(wildcard $(OBJDIR)/Makefile)
CONFIG_STATUS = $(wildcard $(OBJDIR)/config.status)

EXTRA_CONFIG_DEPS := \
  $(TOPSRCDIR)/aclocal.m4 \
  $(TOPSRCDIR)/old-configure.in \
  $(wildcard $(TOPSRCDIR)/build/autoconf/*.m4) \
  $(TOPSRCDIR)/js/src/aclocal.m4 \
  $(TOPSRCDIR)/js/src/old-configure.in \
  $(NULL)

$(CONFIGURES): %: %.in $(EXTRA_CONFIG_DEPS)
	@echo Generating $@
	cp -f $< $@
	chmod +x $@

CONFIG_STATUS_DEPS := \
  $(wildcard $(TOPSRCDIR)/*/confvars.sh) \
  $(CONFIGURES) \
  $(TOPSRCDIR)/nsprpub/configure \
  $(TOPSRCDIR)/config/milestone.txt \
  $(TOPSRCDIR)/browser/config/version.txt \
  $(TOPSRCDIR)/browser/config/version_display.txt \
  $(TOPSRCDIR)/build/virtualenv_packages.txt \
  $(TOPSRCDIR)/python/mozbuild/mozbuild/virtualenv.py \
  $(TOPSRCDIR)/testing/mozbase/packages.txt \
  $(OBJDIR)/.mozconfig.json \
  $(NULL)

# Include a dep file emitted by configure to track Python files that
# may influence the result of configure.
-include $(OBJDIR)/configure.d

CONFIGURE_ENV_ARGS += \
  MAKE='$(MAKE)' \
  $(NULL)

# configure uses the program name to determine @srcdir@. Calling it without
#   $(TOPSRCDIR) will set @srcdir@ to "."; otherwise, it is set to the full
#   path of $(TOPSRCDIR).
ifeq ($(TOPSRCDIR),$(OBJDIR))
  CONFIGURE = ./configure
else
  CONFIGURE = $(TOPSRCDIR)/configure
endif

configure-files: $(CONFIGURES)

configure-preqs = \
  configure-files \
  $(OBJDIR)/.mozconfig.json \
  $(NULL)

configure:: $(configure-preqs)
	$(call BUILDSTATUS,TIERS configure)
	$(call BUILDSTATUS,TIER_START configure)
	@echo cd $(OBJDIR);
	@echo $(CONFIGURE) $(CONFIGURE_ARGS)
	@cd $(OBJDIR) && $(CONFIGURE_ENV_ARGS) $(CONFIGURE) $(CONFIGURE_ARGS) \
	  || ( echo '*** Fix above errors and then restart with\
               "$(MAKE) -f client.mk build"' && exit 1 )
	@touch $(OBJDIR)/Makefile
	$(call BUILDSTATUS,TIER_FINISH configure)

ifneq (,$(MAKEFILE))
$(OBJDIR)/Makefile: $(OBJDIR)/config.status

$(OBJDIR)/config.status: $(CONFIG_STATUS_DEPS)
else
$(OBJDIR)/Makefile: $(CONFIG_STATUS_DEPS)
endif
	@$(MAKE) -f $(TOPSRCDIR)/client.mk configure

####################################
# Build it

build::  $(OBJDIR)/Makefile $(OBJDIR)/config.status
	+$(MOZ_MAKE)

ifdef MOZ_AUTOMATION
build::
	+$(MOZ_MAKE) automation/build
endif

ifdef MOZBUILD_MANAGE_SCCACHE_DAEMON
build::
	# Terminate sccache server. This prints sccache stats.
	-$(MOZBUILD_MANAGE_SCCACHE_DAEMON) --stop-server
endif

# This makefile doesn't support parallel execution. It does pass
# MOZ_MAKE_FLAGS to sub-make processes, so they will correctly execute
# in parallel.
.NOTPARALLEL:

.PHONY: \
    build \
    configure