xref: /openjdk10/make/InitSupport.gmk

#
# Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
#
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################################################################################
# This file contains helper functions for Init.gmk.
# It is divided in two parts, depending on if a SPEC is present or not
# (HAS_SPEC is true or not).
################################################################################

ifndef _INITSUPPORT_GMK
_INITSUPPORT_GMK := 1

ifeq ($(HAS_SPEC),)
  ##############################################################################
  # Helper functions for the initial part of Init.gmk, before the spec file is
  # loaded. Most of these functions provide parsing and setting up make options
  # from the command-line.
  ##############################################################################

  # Make control variables, handled by Init.gmk
  INIT_CONTROL_VARIABLES := LOG CONF CONF_NAME SPEC JOBS TEST_JOBS CONF_CHECK \
      COMPARE_BUILD

  # All known make control variables
  MAKE_CONTROL_VARIABLES := $(INIT_CONTROL_VARIABLES) TEST JDK_FILTER

  # Define a simple reverse function.
  # Should maybe move to MakeBase.gmk, but we can't include that file now.
  reverse = \
      $(if $(strip $(1)), $(call reverse, $(wordlist 2, $(words $(1)), $(1)))) \
          $(firstword $(1))

  # The variable MAKEOVERRIDES contains variable assignments from the command
  # line, but in reverse order to what the user entered.
  # The '\#' <=> '\ 'dance is needed to keep values with space in them connected.
  COMMAND_LINE_VARIABLES := $(subst \#,\ , $(call reverse, $(subst \ ,\#,$(MAKEOVERRIDES))))

  # A list like FOO="val1" BAR="val2" containing all user-supplied make
  # variables that we should propagate.
  # The '\#' <=> '\ 'dance is needed to keep values with space in them connected.
  USER_MAKE_VARS := $(subst \#,\ , $(filter-out $(addsuffix =%, $(INIT_CONTROL_VARIABLES)), \
      $(subst \ ,\#,$(MAKEOVERRIDES))))

  # Setup information about available configurations, if any.
  build_dir=$(topdir)/build
  all_spec_files=$(wildcard $(build_dir)/*/spec.gmk)
  # Extract the configuration names from the path
  all_confs=$(patsubst %/spec.gmk, %, $(patsubst $(build_dir)/%, %, $(all_spec_files)))

  # Check for unknown command-line variables
  define CheckControlVariables
    command_line_variables := $$(strip $$(foreach var, \
        $$(subst \ ,_,$$(MAKEOVERRIDES)), \
        $$(firstword $$(subst =, , $$(var)))))
    unknown_command_line_variables := $$(strip \
        $$(filter-out $$(MAKE_CONTROL_VARIABLES), $$(command_line_variables)))
    ifneq ($$(unknown_command_line_variables), )
      $$(info Note: Command line contains non-control variables:)
      $$(foreach var, $$(unknown_command_line_variables), $$(info * $$(var)=$$($$(var))))
      $$(info Make sure it is not mistyped, and that you intend to override this variable.)
      $$(info 'make help' will list known control variables.)
      $$(info )
    endif
  endef

  # Check for deprecated ALT_ variables
  define CheckDeprecatedEnvironment
    defined_alt_variables := $$(filter ALT_%, $$(.VARIABLES))
    ifneq ($$(defined_alt_variables), )
      $$(info Warning: You have the following ALT_ variables set:)
      $$(foreach var, $$(defined_alt_variables), $$(info * $$(var)=$$($$(var))))
      $$(info ALT_ variables are deprecated, and may result in a failed build.)
      $$(info Please clean your environment.)
      $$(info )
    endif
  endef

  # Check for invalid make flags like -j
  define CheckInvalidMakeFlags
    # This is a trick to get this rule to execute before any other rules
    # MAKEFLAGS only indicate -j if read in a recipe (!)
    $$(topdir)/make/Init.gmk: .FORCE
	$$(if $$(findstring --jobserver, $$(MAKEFLAGS)), \
	    $$(info Error: 'make -jN' is not supported, use 'make JOBS=N') \
	    $$(error Cannot continue) \
	)
    .FORCE:
    .PHONY: .FORCE
  endef

  # Check that the CONF_CHECK option is valid and set up handling
  define ParseConfCheckOption
    ifeq ($$(CONF_CHECK), )
      # Default behavior is fail
      CONF_CHECK := fail
    else ifneq ($$(filter-out auto fail ignore, $$(CONF_CHECK)),)
      $$(info Error: CONF_CHECK must be one of: auto, fail or ignore.)
      $$(error Cannot continue)
    endif
  endef

  define ParseLogLevel
    # Catch old-style VERBOSE= command lines.
    ifneq ($$(origin VERBOSE), undefined)
      $$(info Error: VERBOSE is deprecated. Use LOG=<warn|info|debug|trace> instead.)
      $$(error Cannot continue)
    endif

    # Setup logging according to LOG

    # If the "nofile" argument is given, act on it and strip it away
    ifneq ($$(findstring nofile, $$(LOG)),)
      LOG_NOFILE := true
      # COMMA is defined in spec.gmk, but that is not included yet
      COMMA := ,
      # First try to remove ",nofile" if it exists, otherwise just remove "nofile"
      LOG_STRIPPED := $$(subst nofile,, $$(subst $$(COMMA)nofile,, $$(LOG)))
      # We might have ended up with a leading comma. Remove it
      LOG_LEVEL := $$(strip $$(patsubst $$(COMMA)%, %, $$(LOG_STRIPPED)))
    else
      LOG_LEVEL := $$(LOG)
    endif

    ifeq ($$(LOG_LEVEL),)
      # Set LOG to "warn" as default if not set
      LOG_LEVEL := warn
    endif

    ifeq ($$(LOG_LEVEL), warn)
      MAKE_LOG_FLAGS := -s
    else ifeq ($$(LOG_LEVEL), info)
      MAKE_LOG_FLAGS := -s
    else ifeq ($$(LOG_LEVEL), debug)
      MAKE_LOG_FLAGS :=
    else ifeq ($$(LOG_LEVEL), trace)
      MAKE_LOG_FLAGS :=
    else
      $$(info Error: LOG must be one of: warn, info, debug or trace.)
      $$(error Cannot continue)
    endif
  endef

  define ParseConfAndSpec
    ifneq ($$(origin SPEC), undefined)
      # We have been given a SPEC, check that it works out properly
      ifneq ($$(origin CONF), undefined)
        # We also have a CONF argument. We can't have both.
        $$(info Error: Cannot use CONF=$$(CONF) and SPEC=$$(SPEC) at the same time. Choose one.)
        $$(error Cannot continue)
      endif
      ifneq ($$(origin CONF_NAME), undefined)
        # We also have a CONF_NAME argument. We can't have both.
        $$(info Error: Cannot use CONF_NAME=$$(CONF_NAME) and SPEC=$$(SPEC) at the same time. Choose one.)
        $$(error Cannot continue)
      endif
      ifeq ($$(wildcard $$(SPEC)),)
        $$(info Error: Cannot locate spec.gmk, given by SPEC=$$(SPEC).)
        $$(error Cannot continue)
      endif
      ifeq ($$(filter /%, $$(SPEC)),)
        # If given with relative path, make it absolute
        SPECS := $$(CURDIR)/$$(strip $$(SPEC))
      else
        SPECS := $$(SPEC)
      endif

      # For now, unset this SPEC variable.
      override SPEC :=
    else
      # Use spec.gmk files in the build output directory
      ifeq ($$(all_spec_files),)
        $$(info Error: No configurations found for $$(topdir).)
        $$(info Please run 'bash configure' to create a configuration.)
        $$(info )
        $$(error Cannot continue)
      endif

      ifneq ($$(origin CONF_NAME), undefined)
        ifneq ($$(origin CONF), undefined)
          # We also have a CONF argument. We can't have both.
          $$(info Error: Cannot use CONF=$$(CONF) and CONF_NAME=$$(CONF_NAME) at the same time. Choose one.)
          $$(error Cannot continue)
        endif
        matching_conf := $$(strip $$(filter $$(CONF_NAME), $$(all_confs)))
        ifeq ($$(matching_conf),)
          $$(info Error: No configurations found matching CONF_NAME=$$(CONF_NAME).)
          $$(info Available configurations in $$(build_dir):)
          $$(foreach var, $$(all_confs), $$(info * $$(var)))
          $$(error Cannot continue)
        else ifneq ($$(words $$(matching_conf)), 1)
          $$(info Error: Matching more than one configuration CONF_NAME=$$(CONF_NAME).)
          $$(info Available configurations in $$(build_dir):)
          $$(foreach var, $$(all_confs), $$(info * $$(var)))
          $$(error Cannot continue)
        else
          $$(info Building configuration '$$(matching_conf)' (matching CONF_NAME=$$(CONF_NAME)))
        endif
        # Create a SPEC definition. This will contain the path to exactly one spec file.
        SPECS := $$(build_dir)/$$(matching_conf)/spec.gmk
      else ifneq ($$(origin CONF), undefined)
        # User have given a CONF= argument.
        ifeq ($$(CONF),)
          # If given CONF=, match all configurations
          matching_confs := $$(strip $$(all_confs))
        else
          # Otherwise select those that contain the given CONF string
          matching_confs := $$(strip $$(foreach var, $$(all_confs), \
              $$(if $$(findstring $$(CONF), $$(var)), $$(var))))
        endif
        ifeq ($$(matching_confs),)
          $$(info Error: No configurations found matching CONF=$$(CONF).)
          $$(info Available configurations in $$(build_dir):)
          $$(foreach var, $$(all_confs), $$(info * $$(var)))
          $$(error Cannot continue)
        else
          # Don't repeat this output on make restarts caused by including
          # generated files.
          ifeq ($$(MAKE_RESTARTS),)
            ifeq ($$(words $$(matching_confs)), 1)
              $$(info Building configuration '$$(matching_confs)' (matching CONF=$$(CONF)))
            else
              $$(info Building these configurations (matching CONF=$$(CONF)):)
              $$(foreach var, $$(matching_confs), $$(info * $$(var)))
            endif
          endif
        endif

        # Create a SPEC definition. This will contain the path to one or more spec.gmk files.
        SPECS := $$(addsuffix /spec.gmk, $$(addprefix $$(build_dir)/, $$(matching_confs)))
      else
        # No CONF or SPEC given, check the available configurations
        ifneq ($$(words $$(all_spec_files)), 1)
          $$(info Error: No CONF given, but more than one configuration found.)
          $$(info Available configurations in $$(build_dir):)
          $$(foreach var, $$(all_confs), $$(info * $$(var)))
          $$(info Please retry building with CONF=<config pattern> (or SPEC=<spec file>).)
          $$(info )
          $$(error Cannot continue)
        endif

        # We found exactly one configuration, use it
        SPECS := $$(strip $$(all_spec_files))
      endif
    endif
  endef

  # Extract main targets from Main.gmk using the spec provided in $2.
  #
  # Param 1: FORCE = force generation of main-targets.gmk or LAZY = do not force.
  # Param 2: The SPEC file to use.
  define DefineMainTargets

    # We will start by making sure the main-targets.gmk file is removed, if
    # make has not been restarted. By the -include, we will trigger the
    # rule for generating the file (which is never there since we removed it),
    # thus generating it fresh, and make will restart, incrementing the restart
    # count.
    main_targets_file := $$(dir $(strip $2))make-support/main-targets.gmk

    ifeq ($$(MAKE_RESTARTS),)
      # Only do this if make has not been restarted, and if we do not force it.
      ifeq ($(strip $1), FORCE)
        $$(shell rm -f $$(main_targets_file))
      endif
    endif

    $$(main_targets_file):
	@( cd $$(topdir) && \
	$$(MAKE) $$(MAKE_LOG_FLAGS) -r -R -f $$(topdir)/make/Main.gmk \
	    -I $$(topdir)/make/common SPEC=$(strip $2) NO_RECIPES=true \
	    LOG_LEVEL=$$(LOG_LEVEL) \
	    create-main-targets-include )

    # Now include main-targets.gmk. This will define ALL_MAIN_TARGETS.
    -include $$(main_targets_file)
  endef

  define PrintConfCheckFailed
	@echo ' '
	@echo "Please rerun configure! Easiest way to do this is by running"
	@echo "'make reconfigure'."
	@echo "This behavior may also be changed using CONF_CHECK=<ignore|auto>."
	@echo ' '
  endef

else # $(HAS_SPEC)=true
  ##############################################################################
  # Helper functions for the 'main' target. These functions assume a single,
  # proper and existing SPEC is included.
  ##############################################################################

  include $(SRC_ROOT)/make/common/MakeBase.gmk

  # Define basic logging setup
  BUILD_LOG := $(OUTPUT_ROOT)/build.log
  BUILD_TRACE_LOG := $(OUTPUT_ROOT)/build-trace-time.log

  BUILD_LOG_PIPE := > >($(TEE) -a $(BUILD_LOG)) 2> >($(TEE) -a $(BUILD_LOG) >&2)

  # Sanity check the spec file, so it matches this source code
  define CheckSpecSanity
    ifneq ($$(ACTUAL_TOPDIR), $$(TOPDIR))
      ifneq ($$(ACTUAL_TOPDIR), $$(ORIGINAL_TOPDIR))
        ifneq ($$(ACTUAL_TOPDIR), $$(CANONICAL_TOPDIR))
          $$(info Error: SPEC mismatch! Current working directory)
          $$(info $$(ACTUAL_TOPDIR))
          $$(info does not match either TOPDIR, ORIGINAL_TOPDIR or CANONICAL_TOPDIR)
          $$(info $$(TOPDIR))
          $$(info $$(ORIGINAL_TOPDIR))
          $$(info $$(CANONICAL_TOPDIR))
          $$(error Cannot continue)
        endif
      endif
    endif
  endef

  # Parse COMPARE_BUILD into COMPARE_BUILD_*
  # Syntax: COMPARE_BUILD=CONF=<configure options>:PATCH=<patch file>:
  #         MAKE=<make targets>:COMP_OPTS=<compare script options>:
  #         COMP_DIR=<compare script base dir>|<default>
  # If neither CONF or PATCH is given, assume <default> means CONF if it
  # begins with "--", otherwise assume it means PATCH.
  # MAKE and COMP_OPTS can only be used with CONF and/or PATCH specified.
  # If any value contains "+", it will be replaced by space.
  define ParseCompareBuild
    ifneq ($$(COMPARE_BUILD), )
      COMPARE_BUILD_OUTPUT_ROOT := $(TOPDIR)/build/compare-build/$(CONF_NAME)

      ifneq ($$(findstring :, $$(COMPARE_BUILD)), )
        $$(foreach part, $$(subst :, , $$(COMPARE_BUILD)), \
          $$(if $$(filter PATCH=%, $$(part)), \
            $$(eval COMPARE_BUILD_PATCH=$$(strip $$(patsubst PATCH=%, %, $$(part)))) \
          ) \
          $$(if $$(filter CONF=%, $$(part)), \
            $$(eval COMPARE_BUILD_CONF=$$(strip $$(subst +, , $$(patsubst CONF=%, %, $$(part))))) \
          ) \
          $$(if $$(filter MAKE=%, $$(part)), \
            $$(eval COMPARE_BUILD_MAKE=$$(strip $$(subst +, , $$(patsubst MAKE=%, %, $$(part))))) \
          ) \
          $$(if $$(filter COMP_OPTS=%, $$(part)), \
            $$(eval COMPARE_BUILD_COMP_OPTS=$$(strip $$(subst +, , $$(patsubst COMP_OPTS=%, %, $$(part))))) \
          ) \
          $$(if $$(filter COMP_DIR=%, $$(part)), \
            $$(eval COMPARE_BUILD_COMP_DIR=$$(strip $$(subst +, , $$(patsubst COMP_DIR=%, %, $$(part))))) \
          ) \
        )
      else
        # Separate handling for single field case, to allow for spaces in values.
        ifneq ($$(filter PATCH=%, $$(COMPARE_BUILD)), )
          COMPARE_BUILD_PATCH=$$(strip $$(patsubst PATCH=%, %, $$(COMPARE_BUILD)))
        else ifneq ($$(filter CONF=%, $$(COMPARE_BUILD)), )
          COMPARE_BUILD_CONF=$$(strip $$(subst +, , $$(patsubst CONF=%, %, $$(COMPARE_BUILD))))
        else ifneq ($$(filter --%, $$(COMPARE_BUILD)), )
          # Assume CONF if value begins with --
          COMPARE_BUILD_CONF=$$(strip $$(subst +, , $$(COMPARE_BUILD)))
        else
          # Otherwise assume patch file
          COMPARE_BUILD_PATCH=$$(strip $$(COMPARE_BUILD))
        endif
      endif
      ifneq ($$(COMPARE_BUILD_PATCH), )
        ifneq ($$(wildcard $$(TOPDIR)/$$(COMPARE_BUILD_PATCH)), )
          # Assume relative path, if file exists
          COMPARE_BUILD_PATCH := $$(wildcard $$(TOPDIR)/$$(COMPARE_BUILD_PATCH))
        else ifeq ($$(wildcard $$(COMPARE_BUILD_PATCH)), )
          $$(error Patch file $$(COMPARE_BUILD_PATCH) does not exist)
        endif
      endif
    endif
  endef

  # Prepare for a comparison rebuild
  define PrepareCompareBuild
	$(ECHO) "Preparing for comparison rebuild"
        # Apply patch, if any
	$(if $(COMPARE_BUILD_PATCH), $(PATCH) -p1 < $(COMPARE_BUILD_PATCH))
        # Move the first build away temporarily
	$(RM) -r $(TOPDIR)/build/.compare-build-temp
	$(MKDIR) -p $(TOPDIR)/build/.compare-build-temp
	$(MV) $(OUTPUT_ROOT) $(TOPDIR)/build/.compare-build-temp
        # Restore an old compare-build, or create a new compare-build directory.
	if test -d $(COMPARE_BUILD_OUTPUT_ROOT); then \
	  $(MV) $(COMPARE_BUILD_OUTPUT_ROOT) $(OUTPUT_ROOT); \
	else \
	  $(MKDIR) -p $(OUTPUT_ROOT); \
	fi
        # Re-run configure with the same arguments (and possibly some additional),
        # must be done after patching.
	( cd $(OUTPUT_ROOT) && PATH="$(ORIGINAL_PATH)" \
	    $(BASH) $(TOPDIR)/configure $(CONFIGURE_COMMAND_LINE) $(COMPARE_BUILD_CONF))
  endef

  # Cleanup after a compare build
  define CleanupCompareBuild
        # If running with a COMPARE_BUILD patch, reverse-apply it
	$(if $(COMPARE_BUILD_PATCH), $(PATCH) -R -p1 < $(COMPARE_BUILD_PATCH))
        # Move this build away and restore the original build
	$(MKDIR) -p $(TOPDIR)/build/compare-build
	$(MV) $(OUTPUT_ROOT) $(COMPARE_BUILD_OUTPUT_ROOT)
	$(MV) $(TOPDIR)/build/.compare-build-temp/$(CONF_NAME) $(OUTPUT_ROOT)
	$(RM) -r $(TOPDIR)/build/.compare-build-temp
  endef

  # Do the actual comparison of two builds
  define CompareBuildDoComparison
        # Compare first and second build. Ignore any error code from compare.sh.
	$(ECHO) "Comparing between comparison rebuild (this/new) and baseline (other/old)"
	$(if $(COMPARE_BUILD_COMP_DIR), \
	  +(cd $(COMPARE_BUILD_OUTPUT_ROOT) && ./compare.sh $(COMPARE_BUILD_COMP_OPTS) \
	      -2dirs $(COMPARE_BUILD_OUTPUT_ROOT)/$(COMPARE_BUILD_COMP_DIR) $(OUTPUT_ROOT)/$(COMPARE_BUILD_COMP_DIR) || true), \
	  +(cd $(COMPARE_BUILD_OUTPUT_ROOT) && ./compare.sh $(COMPARE_BUILD_COMP_OPTS) \
	      -o $(OUTPUT_ROOT) || true) \
	)
  endef

  define PrintFailureReports
	$(if $(wildcard $(MAKESUPPORT_OUTPUTDIR)/failure-logs/*), \
	  $(PRINTF) "=== Output from failing command(s) repeated here ===\n" $(NEWLINE) \
	  $(foreach logfile, $(sort $(wildcard $(MAKESUPPORT_OUTPUTDIR)/failure-logs/*)), \
	      $(PRINTF) "* For target $(notdir $(basename $(logfile))):\n" $(NEWLINE) \
	      $(CAT) $(logfile) | $(GREP) -v -e "^Note: including file:" $(NEWLINE) \
	  ) \
	  $(PRINTF) "=== End of repeated output ===\n" \
	)
  endef

  define PrintBuildLogFailures
	if $(GREP) -q "recipe for target .* failed" $(BUILD_LOG) 2> /dev/null; then  \
	  $(PRINTF) "=== Make failure sequence repeated here ===\n" ; \
	  $(GREP) "recipe for target .* failed" $(BUILD_LOG) ; \
	  $(PRINTF) "=== End of repeated output ===\n" ; \
	  $(PRINTF) "Hint: Try searching the build log for the name of the first failed target.\n" ; \
	else \
	  $(PRINTF) "No indication of failed target found.\n" ; \
	  $(PRINTF) "Hint: Try searching the build log for '] Error'.\n" ; \
	fi
  endef

  define RotateLogFiles
	$(RM) $(BUILD_LOG).old 2> /dev/null && \
	$(MV) $(BUILD_LOG) $(BUILD_LOG).old 2> /dev/null || true
	$(if $(findstring trace, $(LOG_LEVEL)), \
	  $(RM) $(BUILD_TRACE_LOG).old 2> /dev/null && \
	  $(MV) $(BUILD_TRACE_LOG) $(BUILD_TRACE_LOG).old 2> /dev/null || true \
	)
  endef

  define PrepareFailureLogs
	$(RM) -r $(MAKESUPPORT_OUTPUTDIR)/failure-logs 2> /dev/null && \
	$(MKDIR) -p $(MAKESUPPORT_OUTPUTDIR)/failure-logs
  endef

  # Remove any javac server logs and port files. This
  # prevents a new make run to reuse the previous servers.
  define PrepareSmartJavac
	$(if $(SJAVAC_SERVER_DIR), \
	  $(RM) -r $(SJAVAC_SERVER_DIR) 2> /dev/null && \
	  $(MKDIR) -p $(SJAVAC_SERVER_DIR) \
	)
  endef

  define CleanupSmartJavac
	[ -f $(SJAVAC_SERVER_DIR)/server.port ] && $(ECHO) Stopping sjavac server && \
	    $(TOUCH) $(SJAVAC_SERVER_DIR)/server.port.stop; true
  endef

  define StartGlobalTimer
	$(RM) -r $(BUILDTIMESDIR) 2> /dev/null && \
	$(MKDIR) -p $(BUILDTIMESDIR) && \
	$(call RecordStartTime,TOTAL)
  endef

  define StopGlobalTimer
	$(call RecordEndTime,TOTAL)
  endef

  # Find all build_time_* files and print their contents in a list sorted
  # on the name of the sub repository.
  define ReportBuildTimes
	$(PRINTF) $(LOG_INFO) -- \
	    "----- Build times -------\nStart %s\nEnd   %s\n%s\n%s\n-------------------------\n" \
	    "`$(CAT) $(BUILDTIMESDIR)/build_time_start_TOTAL_human_readable`" \
	    "`$(CAT) $(BUILDTIMESDIR)/build_time_end_TOTAL_human_readable`" \
	    "`$(LS) $(BUILDTIMESDIR)/build_time_diff_* | $(GREP) -v _TOTAL | \
	    $(XARGS) $(CAT) | $(SORT) -k 2`" \
	    "`$(CAT) $(BUILDTIMESDIR)/build_time_diff_TOTAL`" \
	    $(BUILD_LOG_PIPE)
  endef

endif # HAS_SPEC

endif # _INITSUPPORT_GMK