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PreInit.gmk
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#
# Copyright (c) 2012, 2025, 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 file is the earliest part of the build bootstrap process (not counting
# Makefile that includes it). Its main responsibility is to figure out what
# configuration to use and pick up the corresponding SPEC file. It will then
# call Init.gmk with this SPEC for further bootstrapping.
################################################################################
# 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:
IS_PREINIT_ENV := true
# Include our helper functions.
include $(TOPDIR)/make/PreInitSupport.gmk
include $(TOPDIR)/make/common/LogUtils.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/Global.gmk
# Targets provided by Init.gmk.
ALL_INIT_TARGETS := print-modules print-targets print-configuration \
print-tests reconfigure pre-compare-build post-compare-build
# 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), )
SKIP_SPEC := true
endif
ifeq ($(findstring p, $(MAKEFLAGS))$(findstring q, $(MAKEFLAGS)), pq)
SKIP_SPEC := true
endif
ifneq ($(SKIP_SPEC), true)
############################################################################
# This is the common case: we have been called from the command line by the
# user with a target that should be delegated to Main.gmk, so we need to
# figure out a proper SPEC and call Init.gmk with it.
############################################################################
# Basic checks on environment and command line.
$(eval $(call CheckControlVariables))
$(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,
# MAKE_LOG_VARS 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))
MAKE_INIT_ARGS := $(MFLAGS) $(MAKE_LOG_FLAGS) -r -R -I $(TOPDIR)/make/common
# 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)/make/autoconf/*) \
$(if $(CUSTOM_CONFIG_DIR), $(wildcard $(CUSTOM_CONFIG_DIR)/*)) \
$(addprefix $(TOPDIR)/make/conf/, version-numbers.conf branding.conf) \
$(if $(CUSTOM_CONF_DIR), $(wildcard $(addprefix $(CUSTOM_CONF_DIR)/, \
version-numbers.conf branding.conf)))
ifeq ($(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) $(MAKE_INIT_ARGS) -f $(TOPDIR)/make/Init.gmk SPEC=$@ \
reconfigure )
else ifeq ($(CONF_CHECK), ignore)
# Do nothing
endif
# Do not let make delete spec files even if aborted while doing a reconfigure
.PRECIOUS: $(SPECS)
# Unless reconfigure is explicitly called, let all main targets depend on
# the spec files to be up to date.
ifeq ($(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) $(MAKECMDGOALS))')
endif
MAKE_INIT_MAIN_TARGET_ARGS := \
USER_MAKE_VARS="$(USER_MAKE_VARS)" MAKE_LOG_FLAGS=$(MAKE_LOG_FLAGS) \
$(MAKE_LOG_VARS) \
INIT_TARGETS="$(INIT_TARGETS)" \
SEQUENTIAL_TARGETS="$(SEQUENTIAL_TARGETS)" \
PARALLEL_TARGETS="$(PARALLEL_TARGETS)"
# 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.
# The COMPARE_BUILD part implements special support for makefile development.
$(ALL_INIT_TARGETS) $(ALL_MAIN_TARGETS): make-info
@$(if $(TARGET_DONE), \
true \
, \
( cd $(TOPDIR) && \
$(foreach spec, $(SPECS), \
$(MAKE) $(MAKE_INIT_ARGS) -j 1 -f $(TOPDIR)/make/Init.gmk \
SPEC=$(spec) $(MAKE_INIT_MAIN_TARGET_ARGS) \
main && \
$(if $(and $(COMPARE_BUILD), $(PARALLEL_TARGETS)), \
$(MAKE) $(MAKE_INIT_ARGS) -f $(TOPDIR)/make/Init.gmk \
SPEC=$(spec) \
COMPARE_BUILD="$(COMPARE_BUILD)" \
pre-compare-build && \
$(MAKE) $(MAKE_INIT_ARGS) -j 1 -f $(TOPDIR)/make/Init.gmk \
SPEC=$(spec) $(MAKE_INIT_MAIN_TARGET_ARGS) \
COMPARE_BUILD="$(COMPARE_BUILD):NODRYRUN=true" \
main && \
$(MAKE) $(MAKE_INIT_ARGS) -f $(TOPDIR)/make/Init.gmk \
SPEC=$(spec) \
COMPARE_BUILD="$(COMPARE_BUILD):NODRYRUN=true" \
post-compare-build && \
) \
) true ) \
$(eval TARGET_DONE=true) \
)
.PHONY: $(ALL_MAIN_TARGETS) $(ALL_INIT_TARGETS)
else # SKIP_SPEC=true
############################################################################
# We have only global targets, or are called with -pq (from command
# completion). In this case we might not even have a configuration at all, but
# still need to handle the situation gracefully even if there is no SPEC file.
############################################################################
ifeq ($(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)
endif # $(SKIP_SPEC)!=true
################################################################################