#

# Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.

# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

#

# This code is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License version 2 only, as

# published by the Free Software Foundation.  Oracle designates this

# particular file as subject to the "Classpath" exception as provided

# by Oracle in the LICENSE file that accompanied this code.

#

# This code is distributed in the hope that it will be useful, but WITHOUT

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

# version 2 for more details (a copy is included in the LICENSE file that

# accompanied this code).

#

# You should have received a copy of the GNU General Public License version

# 2 along with this work; if not, write to the Free Software Foundation,

# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

#

# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

# or visit www.oracle.com if you need additional information or have any

# questions.

#

################################################################################

# This is the bootstrapping part of the build. This file is included from the

# top level Makefile, and is responsible for launching the Main.gmk file with

# the proper make and the proper make arguments.

################################################################################

# This must be the first rule

default:

.PHONY: default

# Inclusion of this pseudo-target will cause make to execute this file

# serially, regardless of -j.

.NOTPARALLEL:

ifeq ($(HAS_SPEC),)

  ##############################################################################

  # This is the default mode. We have not been recursively called with a SPEC.

  ##############################################################################

  # Include our helper functions.

  include $(topdir)/make/InitSupport.gmk

  # Here are "global" targets, i.e. targets that can be executed without having

  # a configuration. This will define ALL_GLOBAL_TARGETS.

  include $(topdir)/make/Help.gmk

  # Targets provided by Init.gmk.

  ALL_INIT_TARGETS := print-modules print-targets reconfigure

  # CALLED_TARGETS is the list of targets that the user provided,

  # or "default" if unspecified.

  CALLED_TARGETS := $(if $(MAKECMDGOALS), $(MAKECMDGOALS), default)

  # Extract non-global targets that require a spec file.

  CALLED_SPEC_TARGETS := $(filter-out $(ALL_GLOBAL_TARGETS), $(CALLED_TARGETS))

  # If we have only global targets, or if we are called with -qp (assuming an

  # external part, e.g. bash completion, is trying to understand our targets),

  # we will skip SPEC location and the sanity checks.

  ifeq ($(CALLED_SPEC_TARGETS), )

    ONLY_GLOBAL_TARGETS := true

  endif

  ifneq ($(findstring qp, $(MAKEFLAGS)),)

    ONLY_GLOBAL_TARGETS := true

  endif

  ifeq ($(ONLY_GLOBAL_TARGETS), true)

    ############################################################################

    # We have only global targets, or are called with -pq.

    ############################################################################

    ifeq ($(wildcard $(SPEC)), )

      # If we have no SPEC provided, we will just make a "best effort" target list.

      # First try to grab any available pre-existing main-targets.gmk.

      main_targets_file := $(firstword $(wildcard $(build_dir)/*/make-support/main-targets.gmk))

      ifneq ($(main_targets_file), )

        # Extract the SPEC that corresponds to this main-targets.gmk file.

        SPEC := $(patsubst %/make-support/main-targets.gmk, %/spec.gmk, $(main_targets_file))

      else

        # None found, pick an arbitrary SPEC for which to generate a file

        SPEC := $(firstword $(all_spec_files))

      endif

    endif

    ifneq ($(wildcard $(SPEC)), )

      $(eval $(call DefineMainTargets, LAZY, $(SPEC)))

    else

      # If we have no configurations we can not provide any main targets.

      ALL_MAIN_TARGETS :=

    endif

    ALL_TARGETS := $(sort $(ALL_GLOBAL_TARGETS) $(ALL_MAIN_TARGETS) $(ALL_INIT_TARGETS))

    # Just list all our targets.

    $(ALL_TARGETS):

    .PHONY: $(ALL_TARGETS)

  else

    ############################################################################

    # This is the normal case, we have been called from the command line by the

    # user and we need to call ourself back with a proper SPEC.

    # We have at least one non-global target, so we need to find a spec file.

    ############################################################################

    # Basic checks on environment and command line.

    $(eval $(call CheckControlVariables))

    $(eval $(call CheckDeprecatedEnvironment))

    $(eval $(call CheckInvalidMakeFlags))

    # Check that CONF_CHECK is valid.

    $(eval $(call ParseConfCheckOption))

    # Check that the LOG given is valid, and set LOG_LEVEL, LOG_NOFILE and MAKE_LOG_FLAGS.

    $(eval $(call ParseLogLevel))

    # After this SPECS contain 1..N spec files (otherwise ParseConfAndSpec fails).

    $(eval $(call ParseConfAndSpec))

    # Extract main targets from Main.gmk using the spec(s) provided. In theory,

    # with multiple specs, we should find the intersection of targets provided

    # by all specs, but we approximate this by an arbitrary spec from the list.

    # This will setup ALL_MAIN_TARGETS.

    $(eval $(call DefineMainTargets, FORCE, $(firstword $(SPECS))))

    # Separate called targets depending on type.

    INIT_TARGETS := $(filter $(ALL_INIT_TARGETS), $(CALLED_SPEC_TARGETS))

    MAIN_TARGETS := $(filter $(ALL_MAIN_TARGETS), $(CALLED_SPEC_TARGETS))

    SEQUENTIAL_TARGETS := $(filter dist-clean clean%, $(MAIN_TARGETS))

    PARALLEL_TARGETS := $(filter-out $(SEQUENTIAL_TARGETS), $(MAIN_TARGETS))

    # The spec files depend on the autoconf source code. This check makes sure

    # the configuration is up to date after changes to configure.

    $(SPECS): $(wildcard $(topdir)/common/autoconf/*)

        ifeq ($(CONF_CHECK), fail)

	  @echo "Error: The configuration is not up to date for '$(lastword $(subst /, , $(dir $@)))'."

	  $(call PrintConfCheckFailed)

	  @exit 2

        else ifeq ($(CONF_CHECK), auto)

	  @echo "Note: The configuration is not up to date for '$(lastword $(subst /, , $(dir $@)))'."

	  @( cd $(topdir) && \

	      $(MAKE) $(MFLAGS) $(MAKE_LOG_FLAGS) -r -R -f $(topdir)/make/Init.gmk \

	      SPEC=$@ HAS_SPEC=true ACTUAL_TOPDIR=$(topdir) \

	      reconfigure )

        else ifeq ($(CONF_CHECK), ignore)

          # Do nothing

        endif

    # Unless reconfigure is explicitely called, let all main targets depend on

    # the spec files to be up to date.

    ifeq ($(findstring reconfigure, $(INIT_TARGETS)), )

      $(MAIN_TARGETS): $(SPECS)

    endif

    make-info:

        ifneq ($(findstring $(LOG_LEVEL),info debug trace),)

	  $(info Running make as '$(strip $(MAKE) $(MFLAGS) \

	      $(COMMAND_LINE_VARIABLES) $(MAKECMDGOALS))')

        endif

    # Now the init and main targets will be called, once for each SPEC. The

    # recipe will be run once for every target specified, but we only want to

    # execute the recipe a single time, hence the TARGET_DONE with a dummy

    # command if true.

    $(ALL_INIT_TARGETS) $(ALL_MAIN_TARGETS): make-info

	@$(if $(TARGET_DONE), \

	  true \

	, \

	  $(foreach spec, $(SPECS), \

	    ( cd $(topdir) && \

	    $(MAKE) $(MFLAGS) $(MAKE_LOG_FLAGS) -r -R -j 1 -f $(topdir)/make/Init.gmk \

	        SPEC=$(spec) HAS_SPEC=true ACTUAL_TOPDIR=$(topdir) \

	        USER_MAKE_VARS="$(USER_MAKE_VARS)" MAKE_LOG_FLAGS=$(MAKE_LOG_FLAGS) \

	        LOG_LEVEL=$(LOG_LEVEL) LOG_NOFILE=$(LOG_NOFILE) \

	        INIT_TARGETS="$(INIT_TARGETS)" \

	        SEQUENTIAL_TARGETS="$(SEQUENTIAL_TARGETS)" \

	        PARALLEL_TARGETS="$(PARALLEL_TARGETS)"  \

	        main ) && \

	  ) true \

	  $(eval TARGET_DONE=true) \

	)

    .PHONY: $(ALL_MAIN_TARGETS) $(ALL_INIT_TARGETS)

  endif # $(ONLY_GLOBAL_TARGETS)!=true

else # HAS_SPEC=true

  ##############################################################################

  # Now we have a spec. This part provides the "main" target that acts as a

  # trampoline to call the Main.gmk with the value of $(MAKE) found in the spec

  # file.

  ##############################################################################

  include $(SPEC)

  # Our helper functions.

  include $(TOPDIR)/make/InitSupport.gmk

  # Verify that the spec file we included seems okay.

  $(eval $(call CheckSpecSanity))

  ifeq ($(LOG_NOFILE), true)

    # Disable log wrapper if LOG=[level,]nofile was given

    override BUILD_LOG_WRAPPER :=

  endif

  ifeq ($(OUTPUT_SYNC_SUPPORTED), true)

    OUTPUT_SYNC_FLAG := -O$(OUTPUT_SYNC)

  endif

  ##############################################################################

  # Init targets

  ##############################################################################

  print-modules:

	( cd $(TOPDIR) && \

	    $(MAKE) $(MAKE_ARGS) -j 1 -f make/Main.gmk $(USER_MAKE_VARS) \

	    NO_RECIPES=true print-modules )

  print-targets:

	( cd $(TOPDIR) && \

	    $(MAKE) $(MAKE_ARGS) -j 1 -f make/Main.gmk $(USER_MAKE_VARS) \

	    NO_RECIPES=true print-targets )

  reconfigure:

        ifneq ($(CONFIGURE_COMMAND_LINE), )

	  $(ECHO) "Re-running configure using arguments '$(CONFIGURE_COMMAND_LINE)'"

        else

	  $(ECHO) "Re-running configure using default settings"

        endif

	( cd $(OUTPUT_ROOT) && PATH="$(ORIGINAL_PATH)" \

	    $(BASH) $(TOPDIR)/configure $(CONFIGURE_COMMAND_LINE) )

  ##############################################################################

  # The main target, for delegating into Main.gmk

  ##############################################################################

  MAIN_TARGETS := $(SEQUENTIAL_TARGETS) $(PARALLEL_TARGETS)

  TARGET_DESCRIPTION := target$(if $(word 2, $(MAIN_TARGETS)),s) \

      '$(strip $(MAIN_TARGETS))' in configuration '$(CONF_NAME)'

  # MAKEOVERRIDES is automatically set and propagated by Make to sub-Make calls.

  # We need to clear it of the init-specific variables. The user-specified

  # variables are explicitely propagated using $(USER_MAKE_VARS).

  main: MAKEOVERRIDES :=

  main: $(INIT_TARGETS)

        ifneq ($(SEQUENTIAL_TARGETS)$(PARALLEL_TARGETS), )

	  $(call RotateLogFiles)

	  $(BUILD_LOG_WRAPPER) $(PRINTF) "Building $(TARGET_DESCRIPTION)\n"

          ifneq ($(SEQUENTIAL_TARGETS), )

            # Don't touch build output dir since we might be cleaning. That

            # means no log wrapper.

	    ( cd $(TOPDIR) && \

	        $(MAKE) $(MAKE_ARGS) -j 1 -f make/Main.gmk $(USER_MAKE_VARS) \

	        $(SEQUENTIAL_TARGETS) )

          endif

          ifneq ($(PARALLEL_TARGETS), )

	    $(call StartGlobalTimer)

	    $(call PrepareSmartJavac)

	    ( cd $(TOPDIR) && \

	        $(BUILD_LOG_WRAPPER) $(MAKE) $(MAKE_ARGS) $(OUTPUT_SYNC_FLAG) \

	        -j $(JOBS) -f make/Main.gmk $(USER_MAKE_VARS) \

	        $(PARALLEL_TARGETS) )

	    $(call CleanupSmartJavac)

	    $(call StopGlobalTimer)

	    $(call ReportBuildTimes)

          endif

	  $(BUILD_LOG_WRAPPER) $(PRINTF) "Finished building $(TARGET_DESCRIPTION)\n"

        endif

  .PHONY: print-targets print-modules reconfigure main

endif