common/makefiles/MakeHelpers.gmk
changeset 13133 701e61c32ece
child 13697 5262b00bc10c
equal deleted inserted replaced
13132:bd88bb8dd3af 13133:701e61c32ece
       
     1 #
       
     2 # Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
       
     3 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
       
     4 #
       
     5 # This code is free software; you can redistribute it and/or modify it
       
     6 # under the terms of the GNU General Public License version 2 only, as
       
     7 # published by the Free Software Foundation.  Oracle designates this
       
     8 # particular file as subject to the "Classpath" exception as provided
       
     9 # by Oracle in the LICENSE file that accompanied this code.
       
    10 #
       
    11 # This code is distributed in the hope that it will be useful, but WITHOUT
       
    12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
       
    13 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
       
    14 # version 2 for more details (a copy is included in the LICENSE file that
       
    15 # accompanied this code).
       
    16 #
       
    17 # You should have received a copy of the GNU General Public License version
       
    18 # 2 along with this work; if not, write to the Free Software Foundation,
       
    19 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
       
    20 #
       
    21 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
       
    22 # or visit www.oracle.com if you need additional information or have any
       
    23 # questions.
       
    24 #
       
    25 
       
    26 ################################################################
       
    27 #
       
    28 # This file contains helper functions for the top-level Makefile that does
       
    29 # not depend on the spec.gmk file having been read. (The purpose of this 
       
    30 # file is ju to avoid cluttering the top-level Makefile.)
       
    31 #
       
    32 ################################################################
       
    33 
       
    34 ifndef _MAKEHELPERS_GMK
       
    35 _MAKEHELPERS_GMK := 1
       
    36 
       
    37 ##############################
       
    38 # Stuff to run at include time
       
    39 ##############################
       
    40 
       
    41 # Find out which variables were passed explicitely on the make command line. These
       
    42 # will be passed on to sub-makes, overriding spec.gmk settings.
       
    43 MAKE_ARGS=$(foreach var,$(subst =command,,$(filter %=command,$(foreach var,$(.VARIABLES),$(var)=$(firstword $(origin $(var)))))),$(var)=$($(var)))
       
    44 
       
    45 list_alt_overrides_with_origins=$(filter ALT_%=environment ALT_%=command,$(foreach var,$(.VARIABLES),$(var)=$(firstword $(origin $(var)))))
       
    46 list_alt_overrides=$(subst =command,,$(subst =environment,,$(list_alt_overrides_with_origins)))
       
    47 
       
    48 ##############################
       
    49 # Functions
       
    50 ##############################
       
    51 
       
    52 define fatal-error
       
    53     # If the user specificed a "global" target (e.g. 'help'), do not exit but continue running
       
    54     $$(if $$(findstring help,$$(MAKECMDGOALS)),,$$(error Cannot continue))
       
    55 endef
       
    56 
       
    57 define ParseLogLevel
       
    58     ifeq ($$(origin VERBOSE),undefined)
       
    59         # Setup logging according to LOG (but only if VERBOSE is not given)
       
    60         ifeq ($$(LOG),)
       
    61             # Set LOG to "warn" as default if not set (and no VERBOSE given)
       
    62             LOG=warn
       
    63         endif
       
    64         ifeq ($$(LOG),warn)
       
    65             VERBOSE=-s
       
    66         else ifeq ($$(LOG),info)
       
    67             VERBOSE=
       
    68         else ifeq ($$(LOG),debug)
       
    69             VERBOSE=
       
    70         else ifeq ($$(LOG),trace)
       
    71             VERBOSE=-d -p
       
    72         else
       
    73             $$(info Error: LOG must be one of: warn, info, debug or trace.)
       
    74             $$(eval $$(call fatal-error))
       
    75         endif
       
    76     else
       
    77         ifneq ($$(LOG),)
       
    78             # We have both a VERBOSE and a LOG argument. This is OK only if this is a repeated call by ourselves,
       
    79             # but complain if this is the top-level make call.
       
    80             ifeq ($$(MAKELEVEL),0)
       
    81                 $$(info Cannot use LOG=$$(LOG) and VERBOSE=$$(VERBOSE) at the same time. Choose one.)
       
    82                 $$(eval $$(call fatal-error))
       
    83             endif
       
    84         endif
       
    85     endif
       
    86 endef
       
    87 
       
    88 # TODO: Fix duplication in MakeBase.gmk
       
    89 define SetupLogging
       
    90     ifneq ($(findstring $(LOG),debug trace),)
       
    91         # Shell redefinition trick inspired by http://www.cmcrossroads.com/ask-mr-make/6535-tracing-rule-execution-in-gnu-make
       
    92         OLD_SHELL:=$$(SHELL)
       
    93         SHELL = $$(warning Building $$@$$(if $$<, (from $$<))$(if $$?, ($$? newer)))$$(OLD_SHELL) -x
       
    94     endif
       
    95 endef
       
    96 
       
    97 define ParseConfAndSpec
       
    98     ifneq ($$(origin SPEC),undefined)
       
    99         # We have been given a SPEC, check that it works out properly
       
   100         ifeq ($$(wildcard $$(SPEC)),)
       
   101             $$(info Cannot locate spec.gmk, given by SPEC=$$(SPEC))
       
   102             $$(eval $$(call fatal-error))
       
   103         endif
       
   104         ifneq ($$(origin CONF),undefined)
       
   105             # We also have a CONF argument. This is OK only if this is a repeated call by ourselves,
       
   106             # but complain if this is the top-level make call.
       
   107             ifeq ($$(MAKELEVEL),0)
       
   108                 $$(info Cannot use CONF=$$(CONF) and SPEC=$$(SPEC) at the same time. Choose one.)
       
   109                 $$(eval $$(call fatal-error))
       
   110             endif
       
   111         endif
       
   112         # ... OK, we're satisfied, we'll use this SPEC later on
       
   113     else
       
   114         # Find all spec.gmk files in the build output directory
       
   115         output_dir=$$(root_dir)/build
       
   116         all_spec_files=$$(wildcard $$(output_dir)/*/spec.gmk)
       
   117         ifeq ($$(all_spec_files),)
       
   118             $$(info No configurations found for $$(root_dir)! Please run configure to create a configuration.)
       
   119             $$(eval $$(call fatal-error))
       
   120         endif
       
   121         # Extract the configuration names from the path
       
   122         all_confs=$$(patsubst %/spec.gmk,%,$$(patsubst $$(output_dir)/%,%,$$(all_spec_files)))
       
   123 
       
   124         ifneq ($$(origin CONF),undefined)
       
   125             # User have given a CONF= argument.
       
   126             ifeq ($$(CONF),)
       
   127                 # If given CONF=, match all configurations
       
   128                 matching_confs=$$(strip $$(all_confs))
       
   129             else
       
   130                 # Otherwise select those that contain the given CONF string
       
   131                 matching_confs=$$(strip $$(foreach var,$$(all_confs),$$(if $$(findstring $$(CONF),$$(var)),$$(var))))
       
   132             endif
       
   133             ifeq ($$(matching_confs),)
       
   134                 $$(info No configurations found matching CONF=$$(CONF))
       
   135                 $$(info Available configurations:)
       
   136                 $$(foreach var,$$(all_confs),$$(info * $$(var)))
       
   137                 $$(eval $$(call fatal-error))
       
   138             else
       
   139                 ifeq ($$(words $$(matching_confs)),1)
       
   140                     $$(info Building '$$(matching_confs)' (matching CONF=$$(CONF)))
       
   141                 else
       
   142                     $$(info Building the following configurations (matching CONF=$$(CONF)):)
       
   143                     $$(foreach var,$$(matching_confs),$$(info * $$(var)))
       
   144                 endif
       
   145             endif
       
   146 
       
   147             # Create a SPEC definition. This will contain the path to one or more spec.gmk files.
       
   148             SPEC=$$(addsuffix /spec.gmk,$$(addprefix $$(output_dir)/,$$(matching_confs)))
       
   149         else
       
   150             # No CONF or SPEC given, check the available configurations
       
   151             ifneq ($$(words $$(all_spec_files)),1)
       
   152                 $$(info No CONF or SPEC given, but more than one spec.gmk found in $$(output_dir).)
       
   153                 $$(info Available configurations:)
       
   154                 $$(foreach var,$$(all_confs),$$(info * $$(var)))
       
   155                 $$(info Please retry building with CONF=<config> or SPEC=<specfile>)
       
   156                 $$(eval $$(call fatal-error))
       
   157             endif
       
   158 
       
   159             # We found exactly one configuration, use it
       
   160             SPEC=$$(strip $$(all_spec_files))
       
   161         endif
       
   162     endif
       
   163 endef
       
   164 
       
   165 define CheckEnvironment
       
   166     # Find all environment or command line variables that begin with ALT.
       
   167     $(if $(list_alt_overrides),
       
   168         @$(PRINTF) "\nWARNING: You have the following ALT_ variables set:\n"
       
   169     @$(PRINTF) "$(foreach var,$(list_alt_overrides),$(var)=$$$(var))\n"
       
   170     @$(PRINTF) "ALT_ variables are deprecated and will be ignored. Please clean your environment.\n\n"
       
   171     )
       
   172 endef
       
   173 
       
   174 define PrintStartMessage
       
   175     $(if $(VERBOSE),,@$(ECHO) Running make as $(MAKE) $(MFLAGS) $(MAKE_ARGS))
       
   176     $(call CheckEnvironment)
       
   177     @$(ECHO) "Building OpenJDK for target $(if $(MAKECMDGOALS),'$(MAKECMDGOALS)','all') in configuration '$(CONF_NAME)'"
       
   178 endef
       
   179 
       
   180 define PrintEndMessage
       
   181     @$(ECHO) "Finished building OpenJDK for target '$@'"
       
   182     $(call CheckEnvironment)
       
   183 endef
       
   184 
       
   185 endif # _MAKEHELPERS_GMK