# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (c) Linux Test Project, 2009-2022
# Copyright (c) Cisco Systems Inc., 2009-2010
# Ngie Cooper, July 2009

# Avoid funny character set dependencies
unexport LC_ALL
LC_COLLATE=C
LC_NUMERIC=C
export LC_COLLATE LC_NUMERIC

top_srcdir		?= $(CURDIR)

include $(top_srcdir)/include/mk/env_pre.mk
include $(top_srcdir)/include/mk/automake.mk
include $(top_srcdir)/include/mk/gitignore.mk

.SUFFIXES:
.SUFFIXES: .am .default .h .in .m4 .mk

vpath %.am		$(top_srcdir)/m4
vpath %.default		$(top_srcdir)/include
vpath %.h		$(top_srcdir)/include:$(top_builddir)/include
vpath %.in		$(top_srcdir)/include
vpath %.m4		$(top_srcdir)/m4
vpath %.mk		$(top_srcdir)/mk:$(top_srcdir)/mk/include

# User wants uclinux binaries?
UCLINUX			?= 0
export UCLINUX

# CLEAN_TARGETS:	Targets which exist solely in clean.
# COMMON_TARGETS:	Targets which exist in all, clean, and install.
# INSTALL_TARGETS:	Targets which exist in clean and install (contains
# 			COMMON_TARGETS).
# BOOTSTRAP_TARGETS:	Directories required to bootstrap out-of-build-tree
# 			support.

# We're not using uclinux based targets (default).
ifneq ($(UCLINUX),1)
COMMON_TARGETS		:= pan utils
INSTALL_TARGETS		:= doc
endif

define target_to_dir_dep_mapping
ifeq ($$(filter %-clean,$(1)),) # not *-clean
$(1): | $$(abs_top_builddir)/$$(basename $$(subst -,.,$(1)))
else				# clean
$(1):: | $$(abs_top_builddir)/$$(basename $$(subst -,.,$(1)))
endif
endef

COMMON_TARGETS		+= testcases tools metadata

# Don't want to nuke the original files if we're installing in-build-tree.
ifneq ($(BUILD_TREE_STATE),$(BUILD_TREE_SRCDIR_INSTALL))
INSTALL_TARGETS		+= runtest scenario_groups testscripts
CLEAN_TARGETS		+= include runtest scenario_groups testscripts
endif
INSTALL_TARGETS		+= $(COMMON_TARGETS)
CLEAN_TARGETS		+= $(COMMON_TARGETS) lib libs
BOOTSTRAP_TARGETS	:= $(sort $(COMMON_TARGETS) $(CLEAN_TARGETS) $(INSTALL_TARGETS))

CLEAN_TARGETS		:= $(addsuffix -clean,$(CLEAN_TARGETS))
INSTALL_TARGETS		:= $(addsuffix -install,$(INSTALL_TARGETS))
MAKE_TARGETS		:= $(addsuffix -all,$(filter-out lib,$(COMMON_TARGETS)))
CHECK_TARGETS		:= $(addsuffix -check,testcases lib)

# There's no reason why we should run `all' twice. Otherwise we're just wasting
# 3+ mins of useful CPU cycles on a modern machine, and even more time on an
# overtaxed one, or one where -j => 1 was specified.
all: $(addsuffix -all,$(COMMON_TARGETS)) Version

$(MAKE_TARGETS): lib-all libs-all

.PHONY: include-all include-install
include-install: $(top_builddir)/include/config.h include/mk/config.mk include-all

INSTALL_DIR		:= $(DESTDIR)/$(prefix)

# DO NOT REMOVE THIS CALL (see clean_install_dir call below...)!!!!
INSTALL_DIR		:= $(abspath $(INSTALL_DIR))

# build tree bootstrap targets and $(INSTALL_DIR) target.
$(sort $(addprefix $(abs_top_builddir)/,$(BOOTSTRAP_TARGETS)) $(INSTALL_DIR) $(DESTDIR)/$(bindir)):
	mkdir -m 00755 -p "$@"

## Pattern based subtarget rules.
lib-install: lib-all

libs-all: $(abs_top_builddir)/libs

$(MAKE_TARGETS) include-all lib-all libs-all:
	$(MAKE) -C "$(subst -all,,$@)" \
		-f "$(abs_top_srcdir)/$(subst -all,,$@)/Makefile" all

$(CHECK_TARGETS): tools-all
	$(MAKE) -C "$(subst -check,,$@)" \
		-f "$(abs_top_srcdir)/$(subst -check,,$@)/Makefile" check

# Let's not conflict with ac-clean, maintainer-clean, etc, so.
$(filter-out include-clean,$(CLEAN_TARGETS))::
	-$(MAKE) -C "$(subst -clean,,$@)" \
		 -f "$(abs_top_srcdir)/$(subst -clean,,$@)/Makefile" clean

# Just like everything depends on include-all / -install, we need to get rid
# of include last to ensure that things won't be monkey screwed up. Only do
# this if we're invoking clean or a subclean directly though.
ifneq ($(filter clean,$(MAKECMDGOALS)),)
INCLUDE_CLEAN_RDEP_SUBJECT	:= $(CLEAN_TARGETS)
else
ifneq ($(filter %clean,$(MAKECMDGOALS)),)
INCLUDE_CLEAN_RDEP_SUBJECT	:= $(MAKECMDGOALS)
endif
endif

# Remove potential for circular dependencies.
INCLUDE_CLEAN_RDEPS		:= $(filter-out include-clean,$(INCLUDE_CLEAN_RDEP_SUBJECT))

include-clean:: $(INCLUDE_CLEAN_RDEPS) | $(abs_top_builddir)/include
	-$(MAKE) -C include -f "$(abs_top_srcdir)/include/Makefile" clean

# include-install is separate to avoid creating a circular dependency below in
# the install target.
$(INSTALL_TARGETS) include-install lib-install:
	$(MAKE) -C "$(subst -install,,$@)" \
		-f "$(abs_top_srcdir)/$(subst -install,,$@)/Makefile" install

# Just in case configure hasn't been run yet, let's not overambitiously remove
# the $(INSTALL_DIR).
.PHONY: clean_install_dir
clean_install_dir::
	$(RM) -Rf "$(INSTALL_DIR)"

# Clean the directory if the build-tree is properly configured and not set to
# the srcdir.
ifeq ($(filter $(BUILD_TREE_STATE),$(BUILD_TREE_SRCDIR_INSTALL) $(BUILD_TREE_UNCONFIGURED)),)
# Make sure that we don't whack `/'!!!!!
ifneq ($(INSTALL_DIR),/)
CLEAN_TARGETS	+= clean_install_dir
endif
endif

clean:: $(CLEAN_TARGETS)
	$(RM) -f Version

$(foreach tgt,$(MAKE_TARGETS) include-all lib-all $(filter-out clean_install_dir,$(CLEAN_TARGETS)) $(INSTALL_TARGETS) include-install lib-install,$(eval $(call target_to_dir_dep_mapping,$(tgt))))

SRCDIR_INSTALL_SCRIPTS	:= IDcheck.sh runltp ver_linux
SRCDIR_INSTALL_READONLY	:= Version
SRCDIR_INSTALL_TARGETS	:= $(SRCDIR_INSTALL_SCRIPTS) $(SRCDIR_INSTALL_READONLY)

#
# If we are in git repository, use git describe to indentify current version,
# otherwise if downloaded as tarball use VERSION file.
#
.PHONY: Version
Version:
	if git describe >/dev/null 2>&1; then \
		git describe > "$@"; \
	else \
		cp $(top_srcdir)/VERSION "$@"; \
	fi

$(INSTALL_DIR)/Version: Version
	install -m 00644 "$(top_builddir)/$(@F)" "$@"

$(addprefix $(DESTDIR)/$(bindir)/,$(BINDIR_INSTALL_SCRIPTS)): %:
	install -m 00755 "$(top_builddir)/$(@F)" "$@"

$(addprefix $(INSTALL_DIR)/,$(SRCDIR_INSTALL_SCRIPTS)): %:
	install -m 00755 "$(top_srcdir)/$(@F)" "$@"

ifneq ($(BUILD_TREE_STATE),$(BUILD_TREE_SRCDIR_INSTALL))
INSTALL_TARGETS		+= $(addprefix $(INSTALL_DIR)/,$(SRCDIR_INSTALL_TARGETS))
endif
INSTALL_TARGETS		+= $(addprefix $(DESTDIR)/$(bindir)/,$(BINDIR_INSTALL_SCRIPTS))

$(INSTALL_TARGETS): $(INSTALL_DIR) $(DESTDIR)/$(bindir)

.PHONY: check
check: $(CHECK_TARGETS)

## Install
install: $(INSTALL_TARGETS)

## Test
define _test
	@set -e; $(top_srcdir)/lib/newlib_tests/runtest.sh -b $(abs_builddir) $(1)
endef

test: lib-all
ifneq ($(build),$(host))
	$(error running tests on cross-compile build not supported)
endif
	$(call _test)
	$(MAKE) test-metadata

test-c: lib-all
ifneq ($(build),$(host))
	$(error running tests on cross-compile build not supported)
endif
	$(call _test,-c)

test-shell: lib-all
ifneq ($(build),$(host))
	$(error running tests on cross-compile build not supported)
endif
	$(call _test,-s)

test-metadata: metadata-all
	$(MAKE) -C $(abs_srcdir)/metadata/ test

## Help
.PHONY: help
help:
	@echo "Please read the Configuration section in $(top_srcdir)/INSTALL"
	@exit 1

## Menuconfig
menuconfig:
	@$(SHELL) "$(top_srcdir)/ltpmenu"

## End misc targets.