include ../scripts/Makefile.include

ifndef MK
ifeq ($(MAKECMDGOALS),)
# no target specified, trigger the whole suite
all:
	@echo "Testing Makefile";      $(MAKE) -sf tests/make MK=Makefile
	@echo "Testing Makefile.perf"; $(MAKE) -sf tests/make MK=Makefile.perf SET_PARALLEL=1 SET_O=1
else
# run only specific test over 'Makefile'
%:
	@echo "Testing Makefile";      $(MAKE) -sf tests/make MK=Makefile $@
endif
else
PERF := .
PERF_O := $(PERF)
O_OPT :=
FULL_O := $(shell readlink -f $(PERF_O) || echo $(PERF_O))

ifneq ($(O),)
  FULL_O := $(shell readlink -f $(O) || echo $(O))
  PERF_O := $(FULL_O)
  ifeq ($(SET_O),1)
    O_OPT := 'O=$(FULL_O)'
  endif
  K_O_OPT := 'O=$(FULL_O)'
endif

PARALLEL_OPT=
ifeq ($(SET_PARALLEL),1)
  ifeq ($(findstring jobserver,$(MAKEFLAGS))$(findstring -j,$(MAKEFLAGS)),)
    ifeq ($(JOBS),)
      cores := $(shell (getconf _NPROCESSORS_ONLN || grep -E -c '^processor|^CPU[0-9]' /proc/cpuinfo) 2>/dev/null)
      ifeq ($(cores),0)
        cores := 1
      endif
    else
      cores=$(JOBS)
    endif
    PARALLEL_OPT="-j$(cores)"
  endif
endif

# As per kernel Makefile, avoid funny character set dependencies
unexport LC_ALL
LC_COLLATE=C
LC_NUMERIC=C
export LC_COLLATE LC_NUMERIC

ifeq ($(srctree),)
srctree := $(patsubst %/,%,$(dir $(CURDIR)))
srctree := $(patsubst %/,%,$(dir $(srctree)))
#$(info Determined 'srctree' to be $(srctree))
endif

include $(srctree)/tools/scripts/Makefile.arch

# FIXME looks like x86 is the only arch running tests ;-)
# we need some IS_(32/64) flag to make this generic
ifeq ($(ARCH)$(IS_64_BIT), x861)
lib = lib64
else
lib = lib
endif

has = $(shell which $1 2>/dev/null)
python_perf_so := $(shell $(MAKE) python_perf_target|grep "Target is:"|awk '{print $$3}')

# standard single make variable specified
make_clean_all      := clean all
make_python_perf_so := $(python_perf_so)
make_debug          := DEBUG=1
make_nondistro      := BUILD_NONDISTRO=1
make_nondistro_no_demangle := BUILD_NONDISTRO=1 NO_DEMANGLE=1
make_clang          := CC=clang
make_clang_nondistro := CC=clang BUILD_NONDISTRO=1
make_extra_tests    := EXTRA_TESTS=1
make_no_jevents     := NO_JEVENTS=1
make_jevents_all    := JEVENTS_ARCH=all
make_no_bpf_skel    := BUILD_BPF_SKEL=0
make_gen_vmlinux_h  := GEN_VMLINUX_H=1
make_no_python_module := NO_PYTHON_MODULE=1
make_no_scripts     := NO_PYTHON_MODULE=1
make_no_slang       := NO_SLANG=1
make_no_demangle    := NO_DEMANGLE=1
make_no_libelf      := NO_LIBELF=1
make_no_libdw       := NO_LIBDW=1
make_libunwind      := LIBUNWIND=1
make_no_backtrace   := NO_BACKTRACE=1
make_no_libcapstone := NO_CAPSTONE=1
make_libcapstone_dlopen := LIBCAPSTONE_DLOPEN=1
make_no_libnuma     := NO_LIBNUMA=1
make_no_libbionic   := NO_LIBBIONIC=1
make_no_libbpf	    := NO_LIBBPF=1
make_libbpf_dynamic := LIBBPF_DYNAMIC=1
make_no_libbpf_DEBUG := NO_LIBBPF=1 DEBUG=1
make_no_libllvm     := NO_LIBLLVM=1
make_no_babeltrace2 := NO_BABELTRACE2=1
make_with_coresight := CORESIGHT=1
make_no_sdt	    := NO_SDT=1
make_no_libpfm4     := NO_LIBPFM4=1
make_with_gtk4      := GTK4=1
make_refcnt_check   := EXTRA_CFLAGS="-DREFCNT_CHECKING=1"
make_tags           := tags
make_cscope         := cscope
make_help           := help
make_doc            := doc
make_perf_o           := perf.o
make_util_map_o       := util/map.o
make_util_pmu_bison_o := util/pmu-bison.o
make_install        := install
make_install_bin    := install-bin
make_install_doc    := install-doc
make_install_man    := install-man
make_install_html   := install-html
make_install_info   := install-info
make_install_pdf    := install-pdf
make_install_prefix       := install prefix=/tmp/krava
make_install_prefix_slash := install prefix=/tmp/krava/
make_static         := LDFLAGS=-static NO_PERF_READ_VDSO32=1 NO_PERF_READ_VDSOX32=1 NO_JVMTI=1 NO_LIBTRACEEVENT=1 NO_LIBELF=1

# all the NO_* variable combined
make_minimal        := NO_PYTHON_MODULE=1
make_minimal        += NO_DEMANGLE=1 NO_LIBELF=1 NO_BACKTRACE=1
make_minimal        += NO_LIBNUMA=1 NO_LIBBIONIC=1 NO_LIBDW=1
make_minimal        += NO_LIBBPF=1
make_minimal        += NO_SDT=1 NO_JVMTI=1 NO_LIBZSTD=1
make_minimal        += NO_CAPSTONE=1

# binutils 2_42 and newer have bfd_thread_init()
new_libbfd := $(shell echo '#include <bfd.h>' | $(CC) -E -x c - | grep bfd_thread_init)

# Whether libLLVM can be built, which needs the llvm-devel/llvm-dev headers and
# libraries of version 13 or newer, not just llvm-config. This mirrors the
# llvm-perf feature test in tools/build/feature/test-llvm-perf.cpp so that
# libLLVM is only asserted below when the default compiler can really build it.
ifneq ($(call has,$(LLVM_CONFIG)),)
have_libllvm := $(shell printf '#include <llvm/Support/ManagedStatic.h>\n#include <llvm/Support/raw_ostream.h>\n#if LLVM_VERSION_MAJOR < 13\n#error "llvm-devel/llvm-dev version 13 or greater is required"\n#endif\nint main(){llvm::errs()<<"";llvm::llvm_shutdown();return 0;}\n' | \
	$(CXX) -x c++ -std=gnu++17 -I$(shell $(LLVM_CONFIG) --includedir 2>/dev/null) - -o /dev/null \
		-L$(shell $(LLVM_CONFIG) --libdir 2>/dev/null) \
		$(shell $(LLVM_CONFIG) --libs Core BPF 2>/dev/null) \
		$(shell $(LLVM_CONFIG) --system-libs 2>/dev/null) >/dev/null 2>&1 && echo y)
endif

# $(run) contains all available tests
run := make_pure
# Targets 'clean all' can be run together only through top level
# Makefile because we detect clean target in Makefile.perf and
# disable features detection
ifeq ($(MK),Makefile)
run += make_clean_all
MAKE_F := $(MAKE)
else
MAKE_F := $(MAKE) -f $(MK)
endif
run += make_python_perf_so
run += make_debug
ifneq ($(new_libbfd),)
run += make_nondistro
# Demangling with libbfd is only built when the C++ ABI's __cxa_demangle
# isn't available, so it needs a build of its own to be compiled at all.
run += make_nondistro_no_demangle
endif
# CXX is only set to clang++ by LLVM=1, so a CC=clang build has to cope with
# a C compiler and a C++ compiler that don't match.
ifneq ($(call has,clang),)
run += make_clang
ifneq ($(new_libbfd),)
run += make_clang_nondistro
endif
endif
run += make_extra_tests
run += make_no_jevents
run += make_jevents_all
run += make_no_bpf_skel
run += make_gen_vmlinux_h
run += make_no_python_module
run += make_no_scripts
run += make_no_slang
run += make_no_demangle
run += make_no_libelf
run += make_no_libdw
run += make_libunwind
run += make_no_backtrace
run += make_no_libcapstone
run += make_libcapstone_dlopen
run += make_no_libnuma
run += make_no_libbionic
run += make_no_libbpf
run += make_no_libbpf_DEBUG
run += make_no_libllvm
run += make_no_sdt
run += make_no_babeltrace2
run += make_with_coresight
run += make_no_libpfm4
run += make_refcnt_check
run += make_help
run += make_doc
run += make_perf_o
run += make_util_map_o
run += make_util_pmu_bison_o
run += make_install
run += make_install_bin
run += make_install_prefix
run += make_install_prefix_slash
# FIXME 'install-*' commented out till they're fixed
# run += make_install_doc
# run += make_install_man
# run += make_install_html
# run += make_install_info
# run += make_install_pdf
run += make_minimal

old_libbpf := $(shell echo '\#include <bpf/libbpf.h>' | $(CC) -E -dM -x c -| grep -q -E "define[[:space:]]+LIBBPF_MAJOR_VERSION[[:space:]]+0{1}")

ifneq ($(old_libbpf),)
run += make_libbpf_dynamic
endif

ifneq ($(call has,ctags),)
run += make_tags
endif
ifneq ($(call has,cscope),)
run += make_cscope
endif

# $(run_O) contains same portion of $(run) tests with '_O' attached
# to distinguish O=... tests
run_O := $(addsuffix _O,$(run))

# disable some tests for O=...
run_O := $(filter-out make_python_perf_so_O,$(run_O))

# define test for each compile as 'test_NAME' variable
# with the test itself as a value
test_make_tags   = test -f tags
test_make_cscope = test -f cscope.out

test_make_tags_O   := $(test_make_tags)
test_make_cscope_O := $(test_make_cscope)

test_ok          := true
test_make_help   := $(test_ok)
test_make_doc    := $(test_ok)
test_make_help_O := $(test_ok)
test_make_doc_O  := $(test_ok)

test_make_python_perf_so := test -f $(PERF_O)/$(python_perf_so)

test_make_perf_o           := test -f $(PERF_O)/perf.o
test_make_util_map_o       := test -f $(PERF_O)/util/map.o
test_make_util_pmu_bison_o := test -f $(PERF_O)/util/pmu-bison.o

define test_dest_files
  for file in $(1); do				\
    if [ ! -f $$TMP_DEST/$$file ]; then		\
      echo "  failed to find: $$file";		\
    fi						\
  done
endef

installed_files_bin := bin/perf
installed_files_bin += etc/bash_completion.d/perf
installed_files_bin += libexec/perf-core/perf-archive

installed_files_all := $(installed_files_bin)

test_make_install       := $(call test_dest_files,$(installed_files_all))
test_make_install_O     := $(call test_dest_files,$(installed_files_all))
test_make_install_bin   := $(call test_dest_files,$(installed_files_bin))
test_make_install_bin_O := $(call test_dest_files,$(installed_files_bin))

# We prefix all installed files for make_install_prefix(_slash)
# with '/tmp/krava' to match installed/prefix-ed files.
installed_files_all_prefix := $(addprefix /tmp/krava/,$(installed_files_all))
test_make_install_prefix   :=  $(call test_dest_files,$(installed_files_all_prefix))
test_make_install_prefix_O :=  $(call test_dest_files,$(installed_files_all_prefix))

test_make_install_prefix_slash   := $(test_make_install_prefix)
test_make_install_prefix_slash_O := $(test_make_install_prefix_O)

# FIXME nothing gets installed
test_make_install_man    := test -f $$TMP_DEST/share/man/man1/perf.1
test_make_install_man_O  := $(test_make_install_man)

# FIXME nothing gets installed
test_make_install_doc    := $(test_ok)
test_make_install_doc_O  := $(test_ok)

# FIXME nothing gets installed
test_make_install_html   := $(test_ok)
test_make_install_html_O := $(test_ok)

# FIXME nothing gets installed
test_make_install_info   := $(test_ok)
test_make_install_info_O := $(test_ok)

# FIXME nothing gets installed
test_make_install_pdf    := $(test_ok)
test_make_install_pdf_O  := $(test_ok)

test_make_libbpf_dynamic :=   ldd $(PERF_O)/perf | grep -q libbpf
test_make_libbpf_dynamic_O := ldd $$TMP_O/perf | grep -q libbpf

# Feature tests are allowed to fail, so a broken C++ compiler command line
# doesn't fail the build, it just quietly turns off everything that needs a
# C++ compiler. Check a feature that does, otherwise these tests would pass
# while producing a perf with less in it than the default build has.
ifneq ($(have_libllvm),)
test_make_clang               := test -x $(PERF_O)/perf && $(PERF_O)/perf check -q feature libLLVM
test_make_clang_O             := test -x $$TMP_O/perf && $$TMP_O/perf check -q feature libLLVM
test_make_clang_nondistro     := $(test_make_clang)
test_make_clang_nondistro_O   := $(test_make_clang_O)
endif

test_make_python_perf_so_O    := test -f $$TMP_O/python/perf.so
test_make_perf_o_O            := test -f $$TMP_O/perf.o
test_make_util_map_o_O        := test -f $$TMP_O/util/map.o
test_make_util_pmu_bison_o_O := test -f $$TMP_O/util/pmu-bison.o

test_default = test -x $(PERF_O)/perf
test = $(if $(test_$1),$(test_$1),$(test_default))

test_default_O = test -x $$TMP_O/perf
test_O = $(if $(test_$1),$(test_$1),$(test_default_O))

all:

ifdef SHUF
run := $(shell shuf -e $(run))
run_O := $(shell shuf -e $(run_O))
endif

max_width := $(shell echo $(run_O) | sed 's/ /\n/g' | wc -L)

ifdef DEBUG
d := $(info run   $(run))
d := $(info run_O $(run_O))
endif

MAKEFLAGS := --no-print-directory

clean := @(cd $(PERF); $(MAKE_F) -s $(O_OPT) clean >/dev/null && $(MAKE) -s $(O_OPT) -C ../build clean >/dev/null)

$(run):
	$(call clean)
	+@TMP_DEST=$$(mktemp -d); \
	trap 'rm -rf $@ $$TMP_DEST; exit 130' INT TERM; \
	cmd="cd $(PERF) && $(MAKE_F) $($@) $(PARALLEL_OPT) $(O_OPT) DESTDIR=$$TMP_DEST"; \
	printf "%*.*s: %s\n" $(max_width) $(max_width) "$@" "$$cmd" && echo $$cmd > $@ && \
	( eval $$cmd ) >> $@ 2>&1; \
	echo "  test: $(call test,$@)" >> $@ 2>&1; \
	$(call test,$@) && \
	rm -rf $@ $$TMP_DEST || (cat $@ ; false)

make_with_gtk4:
	$(call clean)
	+@TMP_DEST=$$(mktemp -d); \
	trap 'rm -rf $@ $$TMP_DEST; exit 130' INT TERM; \
	cmd="cd $(PERF) && $(MAKE_F) $($@) $(PARALLEL_OPT) $(O_OPT) DESTDIR=$$TMP_DEST"; \
	printf "%*.*s: %s\n" $(max_width) $(max_width) "$@" "$$cmd" && echo $$cmd > $@ && \
	( eval $$cmd ) >> $@ 2>&1; \
	echo "  test: $(call test,$@)" >> $@ 2>&1; \
	$(call test,$@) && \
	rm -rf $@ $$TMP_DEST || (cat $@ ; false)

make_static:
	$(call clean)
	+@TMP_DEST=$$(mktemp -d); \
	trap 'rm -rf $@ $$TMP_DEST; exit 130' INT TERM; \
	cmd="cd $(PERF) && $(MAKE_F) $($@) $(PARALLEL_OPT) $(O_OPT) DESTDIR=$$TMP_DEST"; \
	printf "%*.*s: %s\n" $(max_width) $(max_width) "$@" "$$cmd" && echo $$cmd > $@ && \
	( eval $$cmd ) >> $@ 2>&1; \
	echo "  test: $(call test,$@)" >> $@ 2>&1; \
	$(call test,$@) && \
	rm -rf $@ $$TMP_DEST || (cat $@ ; false)

$(run_O):
ifneq ($(O_CLEAN),0)
	$(call clean)
endif
	+@TMP_O=$$(mktemp -d); \
	TMP_DEST=$$(mktemp -d); \
	trap 'rm -rf $@ $$TMP_O $$TMP_DEST; exit 130' INT TERM; \
	cmd="cd $(PERF) && $(MAKE_F) $($(patsubst %_O,%,$@)) $(PARALLEL_OPT) O=$$TMP_O DESTDIR=$$TMP_DEST"; \
	printf "%*.*s: %s\n" $(max_width) $(max_width) "$@" "$$cmd" && echo $$cmd > $@ && \
	( eval $$cmd ) >> $@ 2>&1 && \
	echo "  test: $(call test_O,$@)" >> $@ 2>&1; \
	$(call test_O,$@) && \
	rm -rf $@ $$TMP_O $$TMP_DEST || (cat $@ ; false)

tarpkg:
	@cmd="$(PERF)/tests/perf-targz-src-pkg $(PERF)"; \
	echo "- $@: $$cmd" && echo $$cmd > $@ && \
	( eval $$cmd ) >> $@ 2>&1 && \
	rm -f $@

KERNEL_O := ../..
ifneq ($(O),)
  KERNEL_O := $(O)
endif

make_kernelsrc:
	@echo "- make -C <kernelsrc> $(PARALLEL_OPT) $(K_O_OPT) tools/perf"
	$(call clean); \
	($(MAKE) -C ../.. $(PARALLEL_OPT) $(K_O_OPT) tools/perf) > $@ 2>&1 && \
	test -x $(KERNEL_O)/tools/perf/perf && rm -f $@ || (cat $@ ; false)

make_kernelsrc_tools:
	@echo "- make -C <kernelsrc>/tools $(PARALLEL_OPT) $(K_O_OPT) perf"
	$(call clean); \
	($(MAKE) -C ../../tools $(PARALLEL_OPT) $(K_O_OPT) perf) > $@ 2>&1 && \
	test -x $(KERNEL_O)/tools/perf/perf && rm -f $@ || (cat $@ ; false)

make_libperf:
	@echo "- make -C lib";
	$(MAKE) -C lib clean >$@ 2>&1; $(MAKE) -C lib >>$@ 2>&1 && rm $@

FEATURES_DUMP_FILE := $(FULL_O)/BUILD_TEST_FEATURE_DUMP
FEATURES_DUMP_FILE_STATIC := $(FULL_O)/BUILD_TEST_FEATURE_DUMP_STATIC

all: $(run) $(run_O) tarpkg make_kernelsrc make_kernelsrc_tools
	@echo OK
	@rm -f $(FEATURES_DUMP_FILE) $(FEATURES_DUMP_FILE_STATIC)

out:
	$(call clean)
	@$(MAKE) -f tests/make $(run_O) PARALLEL_OPT= O_CLEAN=0 $(if $(findstring jobserver,$(MAKEFLAGS))$(findstring -j,$(MAKEFLAGS)),,$(if $(cores),-j$(cores)))
	@echo OK
	@rm -f $(FEATURES_DUMP_FILE) $(FEATURES_DUMP_FILE_STATIC)

ifeq ($(REUSE_FEATURES_DUMP),1)
$(FEATURES_DUMP_FILE):
	$(call clean)
	@cmd="cd $(PERF) && $(MAKE) FEATURE_DUMP_COPY=$@ $(O_OPT) feature-dump"; \
	echo "- $@: $$cmd" && echo $$cmd && \
	( eval $$cmd ) > /dev/null 2>&1

$(FEATURES_DUMP_FILE_STATIC):
	$(call clean)
	@cmd="cd $(PERF) && $(MAKE) FEATURE_DUMP_COPY=$@ $(O_OPT) LDFLAGS='-static' feature-dump"; \
	echo "- $@: $$cmd" && echo $$cmd && \
	( eval $$cmd ) > /dev/null 2>&1

# The clang tests exist to run feature detection with a compiler other than
# the default one, so they have to do their own and are left out of both the
# dependency and the 'FEATURES_DUMP=' append below.
no_features_dump := make_clang make_clang_nondistro
no_features_dump += $(addsuffix _O,$(no_features_dump))

# Add feature dump dependency for run/run_O targets
$(foreach t,$(filter-out $(no_features_dump),$(run) $(run_O)),$(eval \
	$(t): $(if $(findstring make_static,$(t)),\
		$(FEATURES_DUMP_FILE_STATIC),\
		$(FEATURES_DUMP_FILE))))

# Append 'FEATURES_DUMP=' option to all test cases. For example:
# make_no_libbpf: NO_LIBBPF=1  --> NO_LIBBPF=1 FEATURES_DUMP=/a/b/BUILD_TEST_FEATURE_DUMP
# make_static: LDFLAGS=-static --> LDFLAGS=-static FEATURES_DUMP=/a/b/BUILD_TEST_FEATURE_DUMP_STATIC
$(foreach t,$(filter-out $(no_features_dump),$(run)),$(if $(findstring make_static,$(t)),\
			$(eval $(t) := $($(t)) FEATURES_DUMP=$(FEATURES_DUMP_FILE_STATIC)),\
			$(eval $(t) := $($(t)) FEATURES_DUMP=$(FEATURES_DUMP_FILE))))
endif

.PHONY: all $(run) $(run_O) tarpkg clean make_kernelsrc make_kernelsrc_tools make_libperf
endif # ifndef MK

# Serialize execution of tasks writing to shared in-tree files
make_tags_O: | make_clean_all_O
make_cscope_O: | make_clean_all_O
