PERF := .
  MK   := Makefile
  
  include config/Makefile.arch
  
  # FIXME looks like x86 is the only arch running tests ;-)
  # we need some IS_(32/64) flag to make this generic
  ifeq ($(IS_X86_64),1)
  lib = lib64
  else
  lib = lib
  endif
  
  has = $(shell which $1 2>/dev/null)
  
  # standard single make variable specified
  make_clean_all      := clean all
  make_python_perf_so := python/perf.so
  make_debug          := DEBUG=1
  make_no_libperl     := NO_LIBPERL=1
  make_no_libpython   := NO_LIBPYTHON=1
  make_no_scripts     := NO_LIBPYTHON=1 NO_LIBPERL=1
  make_no_newt        := NO_NEWT=1
  make_no_slang       := NO_SLANG=1
  make_no_gtk2        := NO_GTK2=1
  make_no_ui          := NO_NEWT=1 NO_SLANG=1 NO_GTK2=1
  make_no_demangle    := NO_DEMANGLE=1
  make_no_libelf      := NO_LIBELF=1
  make_no_libunwind   := NO_LIBUNWIND=1
  make_no_backtrace   := NO_BACKTRACE=1
  make_no_libnuma     := NO_LIBNUMA=1
  make_no_libaudit    := NO_LIBAUDIT=1
  make_no_libbionic   := NO_LIBBIONIC=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_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
  
  # all the NO_* variable combined
  make_minimal        := NO_LIBPERL=1 NO_LIBPYTHON=1 NO_NEWT=1 NO_GTK2=1
  make_minimal        += NO_DEMANGLE=1 NO_LIBELF=1 NO_LIBUNWIND=1 NO_BACKTRACE=1
  make_minimal        += NO_LIBNUMA=1 NO_LIBAUDIT=1 NO_LIBBIONIC=1
  
  # $(run) contains all available tests
  run := make_pure
  run += make_clean_all
  run += make_python_perf_so
  run += make_debug
  run += make_no_libperl
  run += make_no_libpython
  run += make_no_scripts
  run += make_no_newt
  run += make_no_slang
  run += make_no_gtk2
  run += make_no_ui
  run += make_no_demangle
  run += make_no_libelf
  run += make_no_libunwind
  run += make_no_backtrace
  run += make_no_libnuma
  run += make_no_libaudit
  run += make_no_libbionic
  run += make_help
  run += make_doc
  run += make_perf_o
  run += make_util_map_o
  run += make_install
  run += make_install_bin
  # 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
  
  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)/python/perf.so
  
  test_make_perf_o     := test -f $(PERF)/perf.o
  test_make_util_map_o := test -f $(PERF)/util/map.o
  
  define test_dest_files
    for file in $(1); do				\
      if [ ! -x $$TMP_DEST/$$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_plugins := $(lib)/traceevent/plugins/plugin_cfg80211.so
  installed_files_plugins += $(lib)/traceevent/plugins/plugin_scsi.so
  installed_files_plugins += $(lib)/traceevent/plugins/plugin_xen.so
  installed_files_plugins += $(lib)/traceevent/plugins/plugin_function.so
  installed_files_plugins += $(lib)/traceevent/plugins/plugin_sched_switch.so
  installed_files_plugins += $(lib)/traceevent/plugins/plugin_mac80211.so
  installed_files_plugins += $(lib)/traceevent/plugins/plugin_kvm.so
  installed_files_plugins += $(lib)/traceevent/plugins/plugin_kmem.so
  installed_files_plugins += $(lib)/traceevent/plugins/plugin_hrtimer.so
  installed_files_plugins += $(lib)/traceevent/plugins/plugin_jbd2.so
  
  installed_files_all := $(installed_files_bin)
  installed_files_all += $(installed_files_plugins)
  
  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))
  
  # 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)
  
  # Kbuild tests only
  #test_make_python_perf_so_O := test -f $$TMP/tools/perf/python/perf.so
  #test_make_perf_o_O         := test -f $$TMP/tools/perf/perf.o
  #test_make_util_map_o_O     := test -f $$TMP/tools/perf/util/map.o
  
  test_make_perf_o_O     := true
  test_make_util_map_o_O := true
  
  test_default = test -x $(PERF)/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 DEBUG
  d := $(info run   $(run))
  d := $(info run_O $(run_O))
  endif
  
  MAKEFLAGS := --no-print-directory
  
  clean := @(cd $(PERF); make -s -f $(MK) clean >/dev/null)
  
  $(run):
  	$(call clean)
  	@TMP_DEST=$$(mktemp -d); \
  	cmd="cd $(PERF) && make -f $(MK) DESTDIR=$$TMP_DEST $($@)"; \
  	echo "- $@: $$cmd" && echo $$cmd > $@ && \
  	( eval $$cmd ) >> $@ 2>&1; \
  	echo "  test: $(call test,$@)" >> $@ 2>&1; \
  	$(call test,$@) && \
  	rm -f $@ \
  	rm -rf $$TMP_DEST
  
  $(run_O):
  	$(call clean)
  	@TMP_O=$$(mktemp -d); \
  	TMP_DEST=$$(mktemp -d); \
  	cmd="cd $(PERF) && make -f $(MK) O=$$TMP_O DESTDIR=$$TMP_DEST $($(patsubst %_O,%,$@))"; \
  	echo "- $@: $$cmd" && echo $$cmd > $@ && \
  	( eval $$cmd ) >> $@ 2>&1 && \
  	echo "  test: $(call test_O,$@)" >> $@ 2>&1; \
  	$(call test_O,$@) && \
  	rm -f $@ && \
  	rm -rf $$TMP_O \
  	rm -rf $$TMP_DEST
  
  tarpkg:
  	@cmd="$(PERF)/tests/perf-targz-src-pkg $(PERF)"; \
  	echo "- $@: $$cmd" && echo $$cmd > $@ && \
  	( eval $$cmd ) >> $@ 2>&1
  	
  
  all: $(run) $(run_O) tarpkg
  	@echo OK
  
  out: $(run_O)
  	@echo OK
  
  .PHONY: all $(run) $(run_O) tarpkg clean