# SPDX-License-Identifier: GPL-2.0

  TARGETS = android

  TARGETS += arm64

  TARGETS += bpf

  TARGETS += breakpoints

  TARGETS += capabilities

  TARGETS += cgroup

  TARGETS += clone3

  TARGETS += core

  TARGETS += cpufreq

  TARGETS += cpu-hotplug

  TARGETS += drivers/dma-buf

  TARGETS += efivarfs

  TARGETS += exec

  TARGETS += filesystems

  TARGETS += filesystems/binderfs

  TARGETS += filesystems/epoll

  TARGETS += firmware

  TARGETS += fpu

  TARGETS += ftrace

  TARGETS += futex

  TARGETS += gpio

  TARGETS += intel_pstate

  TARGETS += ipc

  TARGETS += ir

  TARGETS += kcmp

  TARGETS += kexec

  TARGETS += kvm

  TARGETS += lib

  TARGETS += livepatch

  TARGETS += lkdtm

  TARGETS += membarrier

  TARGETS += memfd

  TARGETS += memory-hotplug

  TARGETS += mincore

  TARGETS += mount

  TARGETS += mqueue

  TARGETS += net

  TARGETS += net/forwarding

  TARGETS += net/mptcp

  TARGETS += netfilter

  TARGETS += nsfs

  TARGETS += pidfd

  TARGETS += pid_namespace

  TARGETS += powerpc

  TARGETS += proc

  TARGETS += pstore

  TARGETS += ptrace

  TARGETS += openat2

  TARGETS += rseq

  TARGETS += rtc

  TARGETS += seccomp

  TARGETS += sigaltstack

  TARGETS += size

  TARGETS += sparc64

  TARGETS += splice

  TARGETS += static_keys

  TARGETS += sync

  TARGETS += sysctl

  TARGETS += tc-testing

  TARGETS += timens

  ifneq (1, $(quicktest))

  TARGETS += timers

  endif

  TARGETS += tmpfs

  TARGETS += tpm2

  TARGETS += user

  TARGETS += vm

  TARGETS += x86

  TARGETS += zram

  #Please keep the TARGETS list alphabetically sorted

  # Run "make quicktest=1 run_tests" or

  # "make quicktest=1 kselftest" from top level Makefile

  TARGETS_HOTPLUG = cpu-hotplug
  TARGETS_HOTPLUG += memory-hotplug

  # User can optionally provide a TARGETS skiplist.
  SKIP_TARGETS ?=
  ifneq ($(SKIP_TARGETS),)
  	TMP := $(filter-out $(SKIP_TARGETS), $(TARGETS))
  	override TARGETS := $(TMP)
  endif

  # User can set FORCE_TARGETS to 1 to require all targets to be successfully
  # built; make will fail if any of the targets cannot be built. If
  # FORCE_TARGETS is not set (the default), make will succeed if at least one
  # of the targets gets built.
  FORCE_TARGETS ?=

  # Clear LDFLAGS and MAKEFLAGS when implicit rules are missing.  This provides
  # implicit rules to sub-test Makefiles which avoids build failures in test
  # Makefile that don't have explicit build rules.
  ifeq (,$(LINK.c))

  override LDFLAGS =

  override MAKEFLAGS =
  endif

  # Append kselftest to KBUILD_OUTPUT and O to avoid cluttering

  # KBUILD_OUTPUT with selftest objects and headers installed
  # by selftests Makefile or lib.mk.

  ifdef building_out_of_srctree

  override LDFLAGS =
  endif

  ifneq ($(O),)

  	BUILD := $(O)/kselftest

  else
  	ifneq ($(KBUILD_OUTPUT),)

  		BUILD := $(KBUILD_OUTPUT)/kselftest

  	else
  		BUILD := $(shell pwd)
  		DEFAULT_INSTALL_HDR_PATH := 1
  	endif

  endif

  # Prepare for headers install
  top_srcdir ?= ../../..
  include $(top_srcdir)/scripts/subarch.include
  ARCH           ?= $(SUBARCH)
  export KSFT_KHDR_INSTALL_DONE := 1

  export BUILD

  # build and run gpio when output directory is the src dir.
  # gpio has dependency on tools/gpio and builds tools/gpio
  # objects in the src directory in all cases making the src
  # repo dirty even when objects are relocated.
  ifneq (1,$(DEFAULT_INSTALL_HDR_PATH))
  	TMP := $(filter-out gpio, $(TARGETS))
  	TARGETS := $(TMP)
  endif

  # set default goal to all, so make without a target runs all, even when
  # all isn't the first target in the file.
  .DEFAULT_GOAL := all
  
  # Install headers here once for all tests. KSFT_KHDR_INSTALL_DONE
  # is used to avoid running headers_install from lib.mk.
  # Invoke headers install with --no-builtin-rules to avoid circular
  # dependency in "make kselftest" case. In this case, second level
  # make inherits builtin-rules which will use the rule generate
  # Makefile.o and runs into
  # "Circular Makefile.o <- prepare dependency dropped."
  # and headers_install fails and test compile fails.
  #
  # O= KBUILD_OUTPUT cases don't run into this error, since main Makefile
  # invokes them as sub-makes and --no-builtin-rules is not necessary,
  # but doesn't cause any failures. Keep it simple and use the same
  # flags in both cases.
  # Local build cases: "make kselftest", "make -C" - headers are installed
  # in the default INSTALL_HDR_PATH usr/include.
  khdr:
  ifeq (1,$(DEFAULT_INSTALL_HDR_PATH))

  	$(MAKE) --no-builtin-rules ARCH=$(ARCH) -C $(top_srcdir) headers_install

  else

  	$(MAKE) --no-builtin-rules INSTALL_HDR_PATH=$$BUILD/usr \

  		ARCH=$(ARCH) -C $(top_srcdir) headers_install
  endif
  
  all: khdr

  	@ret=1;							\
  	for TARGET in $(TARGETS); do				\
  		BUILD_TARGET=$$BUILD/$$TARGET;			\
  		mkdir $$BUILD_TARGET  -p;			\

  		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET	\
  				$(if $(FORCE_TARGETS),|| exit);	\

  		ret=$$((ret * $$?));				\
  	done; exit $$ret;

  run_tests: all

  	@for TARGET in $(TARGETS); do \

  		BUILD_TARGET=$$BUILD/$$TARGET;	\

  		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET run_tests;\

  	done;

  hotplug:

  	@for TARGET in $(TARGETS_HOTPLUG); do \

  		BUILD_TARGET=$$BUILD/$$TARGET;	\

  		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET;\

  	done;
  
  run_hotplug: hotplug

  	@for TARGET in $(TARGETS_HOTPLUG); do \

  		BUILD_TARGET=$$BUILD/$$TARGET;	\

  		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET run_full_test;\

  	done;
  
  clean_hotplug:

  	@for TARGET in $(TARGETS_HOTPLUG); do \

  		BUILD_TARGET=$$BUILD/$$TARGET;	\

  		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET clean;\

  	done;

  run_pstore_crash:

  	$(MAKE) -C pstore run_crash

  # Use $BUILD as the default install root. $BUILD points to the
  # right output location for the following cases:
  # 1. output_dir=kernel_src
  # 2. a separate output directory is specified using O= KBUILD_OUTPUT
  # 3. a separate output directory is specified using KBUILD_OUTPUT

  # Avoid conflict with INSTALL_PATH set by the main Makefile

  #

  KSFT_INSTALL_PATH ?= $(BUILD)/kselftest_install
  KSFT_INSTALL_PATH := $(abspath $(KSFT_INSTALL_PATH))
  # Avoid changing the rest of the logic here and lib.mk.
  INSTALL_PATH := $(KSFT_INSTALL_PATH)

  ALL_SCRIPT := $(INSTALL_PATH)/run_kselftest.sh

  TEST_LIST := $(INSTALL_PATH)/kselftest-list.txt

  install: all

  ifdef INSTALL_PATH
  	@# Ask all targets to install their files

  	mkdir -p $(INSTALL_PATH)/kselftest

  	install -m 744 kselftest/module.sh $(INSTALL_PATH)/kselftest/

  	install -m 744 kselftest/runner.sh $(INSTALL_PATH)/kselftest/

  	install -m 744 kselftest/prefix.pl $(INSTALL_PATH)/kselftest/

  	install -m 744 run_kselftest.sh $(INSTALL_PATH)/
  	rm -f $(TEST_LIST)

  	@ret=1;	\
  	for TARGET in $(TARGETS); do \

  		BUILD_TARGET=$$BUILD/$$TARGET;	\

  		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET INSTALL_PATH=$(INSTALL_PATH)/$$TARGET install \
  				$(if $(FORCE_TARGETS),|| exit);	\

  		ret=$$((ret * $$?));		\
  	done; exit $$ret;

  	@# Ask all targets to emit their test scripts
  	@# While building kselftest-list.text skip also non-existent TARGET dirs:

  	@# they could be the result of a build failure and should NOT be
  	@# included in the generated runlist.

  	for TARGET in $(TARGETS); do \

  		BUILD_TARGET=$$BUILD/$$TARGET;	\

  		[ ! -d $(INSTALL_PATH)/$$TARGET ] && echo "Skipping non-existent dir: $$TARGET" && continue; \

  		echo -n "Emit Tests for $$TARGET
  "; \

  		$(MAKE) -s --no-print-directory OUTPUT=$$BUILD_TARGET COLLECTION=$$TARGET \
  			-C $$TARGET emit_tests >> $(TEST_LIST); \

  	done;

  else
  	$(error Error: set INSTALL_PATH to use install)
  endif

  FORMAT ?= .gz
  TAR_PATH = $(abspath ${INSTALL_PATH}/kselftest-packages/kselftest.tar${FORMAT})
  gen_tar: install
  	@mkdir -p ${INSTALL_PATH}/kselftest-packages/
  	@tar caf ${TAR_PATH} --exclude=kselftest-packages -C ${INSTALL_PATH} .
  	@echo "Created ${TAR_PATH}"

  clean:

  	@for TARGET in $(TARGETS); do \

  		BUILD_TARGET=$$BUILD/$$TARGET;	\

  		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET clean;\

  	done;

  .PHONY: khdr all run_tests hotplug run_hotplug clean_hotplug run_pstore_crash install clean gen_tar