# SPDX-License-Identifier: GPL-2.0
# TARGETS += alsa
# TARGETS += amd-pstate
# TARGETS += arm64
# TARGETS += bpf
# TARGETS += breakpoints
# TARGETS += capabilities
# TARGETS += cgroup
# TARGETS += clone3
# TARGETS += core
# TARGETS += cpufreq
# TARGETS += cpu-hotplug
# TARGETS += damon
# TARGETS += drivers/dma-buf
# TARGETS += drivers/s390x/uvdevice
TARGETS += drivers/net/bonding
TARGETS += drivers/net/team
# TARGETS += efivarfs
# TARGETS += exec
# TARGETS += filesystems
# TARGETS += filesystems/binderfs
# TARGETS += filesystems/epoll
# TARGETS += filesystems/fat
# TARGETS += firmware
# TARGETS += fpu
# TARGETS += ftrace
# TARGETS += futex
# TARGETS += gpio
# TARGETS += hid
# TARGETS += intel_pstate
# TARGETS += iommu
# TARGETS += ipc
# TARGETS += ir
# TARGETS += kcmp
# TARGETS += kexec
# TARGETS += kvm
# TARGETS += landlock
# TARGETS += lib
# TARGETS += livepatch
# TARGETS += lkdtm
# TARGETS += membarrier
# TARGETS += memfd
# TARGETS += memory-hotplug
# TARGETS += mincore
# TARGETS += mount
# TARGETS += mount_setattr
# TARGETS += move_mount_set_group
# TARGETS += mqueue
# TARGETS += nci
# TARGETS += net
# TARGETS += net/af_unix
# TARGETS += net/forwarding
# TARGETS += net/hsr
# TARGETS += net/mptcp
# TARGETS += net/openvswitch
# TARGETS += netfilter
# TARGETS += nsfs
# TARGETS += pidfd
# TARGETS += pid_namespace
# TARGETS += powerpc
# TARGETS += proc
# TARGETS += pstore
# TARGETS += ptrace
# TARGETS += openat2
# TARGETS += resctrl
# TARGETS += rlimits
# TARGETS += rseq
# TARGETS += rtc
# TARGETS += seccomp
# TARGETS += sgx
# TARGETS += sigaltstack
# TARGETS += size
# TARGETS += sparc64
# TARGETS += splice
# TARGETS += static_keys
# TARGETS += sync
# TARGETS += syscall_user_dispatch
# TARGETS += sysctl
# TARGETS += tc-testing
# TARGETS += tdx
# TARGETS += timens
ifneq (1, $(quicktest))
# TARGETS += timers
endif
# TARGETS += tmpfs
# TARGETS += tpm2
# TARGETS += user
# TARGETS += vDSO
# TARGETS += mm
# 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.  By default we skip
# BPF since it has cutting edge build time dependencies which require
# more effort to install.
SKIP_TARGETS ?= bpf
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

top_srcdir ?= ../../..

ifeq ("$(origin O)", "command line")
  KBUILD_OUTPUT := $(O)
endif

ifneq ($(KBUILD_OUTPUT),)
  # Make's built-in functions such as $(abspath ...), $(realpath ...) cannot
  # expand a shell special character '~'. We use a somewhat tedious way here.
  abs_objtree := $(shell cd $(top_srcdir) && mkdir -p $(KBUILD_OUTPUT) && cd $(KBUILD_OUTPUT) && pwd)
  $(if $(abs_objtree),, \
    $(error failed to create output directory "$(KBUILD_OUTPUT)"))
  # $(realpath ...) resolves symlinks
  abs_objtree := $(realpath $(abs_objtree))
  BUILD := $(abs_objtree)/kselftest
  KHDR_INCLUDES := -isystem ${abs_objtree}/usr/include
else
  BUILD := $(CURDIR)
  abs_srctree := $(shell cd $(top_srcdir) && pwd)
  KHDR_INCLUDES := -isystem ${abs_srctree}/usr/include
  DEFAULT_INSTALL_HDR_PATH := 1
endif

# Prepare for headers install
include $(top_srcdir)/scripts/subarch.include
ARCH           ?= $(SUBARCH)
export BUILD
export KHDR_INCLUDES

# 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

all:
	@ret=1;							\
	for TARGET in $(TARGETS); do				\
		BUILD_TARGET=$$BUILD/$$TARGET;			\
		mkdir $$BUILD_TARGET  -p;			\
		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET	\
				O=$(abs_objtree)		\
				$(if $(FORCE_TARGETS),|| exit);	\
		ret=$$((ret * $$?));				\
	done; exit $$ret;

run_tests: all
	@for TARGET in $(TARGETS); do \
		BUILD_TARGET=$$BUILD/$$TARGET;	\
		$(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET run_tests \
				O=$(abs_objtree);		    \
	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)/$$TARGET install \
				O=$(abs_objtree)		\
				$(if $(FORCE_TARGETS),|| exit);	\
		ret=$$((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)/$$TARGET ] && printf "Skipping non-existent dir: $$TARGET\n" && continue; \
		printf "Emit Tests for $$TARGET\n"; \
		$(MAKE) -s --no-print-directory OUTPUT=$$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: all run_tests hotplug run_hotplug clean_hotplug run_pstore_crash install clean gen_tar