starboard/build/base_configuration.gypi - cobalt - Git at Google

 # Copyright 2017 The Cobalt Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.

 #####################################################################
 # If you modify this file, PLEASE REMEMBER TO UPDATE
 # //starboard/build/config/base.gni AS WELL
 #####################################################################

 # This contains the defaults and documentation for all Starboard-defined GYP
 # variables. Applications that build on top of Starboard are likely to have
 # their own base configuration, as well.
 #
 # starboard/build/gyp_runner includes this file automatically in all .gyp files
 # that it processes.

 {
   'variables': {
     # We need to define some variables inside of an inner 'variables' scope
     # so that they can be referenced by other outer variables here.  Also, it
     # allows for the specification of default values that get referenced by
     # a top level scope.
     'variables': {
       'sb_enable_lib%': 0,
       # TODO: Remove the "data" subdirectory.
       'sb_static_contents_output_data_dir%': '<(PRODUCT_DIR)/content/data',
       'sb_deploy_output_dir%': '<(PRODUCT_DIR)/deploy',
       'sb_evergreen_compatible%': 0,
       'sb_evergreen_compatible_libunwind%': 0,
       'sb_evergreen_compatible_lite%': 0,
     },

     # Enables the yasm compiler to be used to compile .asm files.
     'yasm_exists%': 0,

     # Where yasm can be found on the target device.
     'path_to_yasm%': "yasm",

     # The Starboard API version of the current build configuration. The default
     # value is meant to be overridden by a Starboard ABI file.
     'sb_api_version%': 0,

     # Enabling this variable enables pedantic levels of warnings for the current
     # toolchain.
     'sb_pedantic_warnings%': 0,

     # Enables embedding Cobalt as a shared library within another app. This
     # requires a 'lib' starboard implementation for the corresponding platform.
     'sb_enable_lib%': '<(sb_enable_lib)',

     # Disables an NPLB audit of C++17 support.
     'sb_disable_cpp17_audit': 0,

     # When this is set to true, the web bindings for the microphone
     # are disabled
     'sb_disable_microphone_idl%': 0,

     # Directory path to static contents' data.
     'sb_static_contents_output_data_dir%': '<(sb_static_contents_output_data_dir)',

     # Top-level directory for staging deploy build output. Platform deploy
     # actions should use <(target_deploy_dir) defined in deploy.gypi to place
     # artifacts for each deploy target in its own subdirectoy.
     'sb_deploy_output_dir%': '<(sb_deploy_output_dir)',

     # Contains the name of the hosting OS. The value is defined by the gyp
     # wrapper script.
     'host_os%': 'win',

     # The target platform id as a string, like 'linux-x64x11', 'win32', etc..
     'sb_target_platform': '',

     # Whether this is an evergreen build.
     'sb_evergreen': 0,

     # Whether this is an evergreen compatible platform. A compatible platform
     # can run the elf_loader and launch the evergreen build.
     'sb_evergreen_compatible%': '<(sb_evergreen_compatible)',

     # Whether to use the libunwind library on evergreen compatible platform.
     'sb_evergreen_compatible_libunwind%': '<(sb_evergreen_compatible_libunwind)',

     # Whether to adopt Evergreen Lite on the evergreen compatible platform.
     'sb_evergreen_compatible_lite%': '<(sb_evergreen_compatible_lite)',

     # The operating system of the target, separate from the target_arch. In many
     # cases, an 'unknown' value is fine, but, if set to 'linux', then we can
     # assume some things, and it'll save us some configuration time.
     'target_os%': 'unknown',

     # The variables allow changing the target type on platforms where the
     # native code may require an additional packaging step (ex. Android).
     'gtest_target_type%': 'executable',
     'final_executable_type%': 'executable',

     # Halt execution on failure to allocate memory.
     'abort_on_allocation_failure%': 1,

     # The relative path from src/ to the directory containing the
     # starboard_platform.gyp file.  It is currently set to
     # 'starboard/<(target_arch)' to make semi-starboard platforms work.
     # TODO: Set the default value to '' once all semi-starboard platforms are
     # moved to starboard.
     'starboard_path%': 'starboard/<(target_arch)',

     # The source of EGL and GLES headers and libraries.
     # Valid values (case and everything sensitive!):
     #   'none'   - No EGL + GLES implementation is available on this platform.
     #   'system_gles3' - Deprecated. Use system_gles2 instead.
     #                    Use the system implementation of EGL + GLES3. The
     #                    headers and libraries must be on the system include and
     #                    link paths.
     #   'system_gles2' - Use the system implementation of EGL + GLES2. The
     #                    headers and libraries must be on the system include and
     #                    link paths.
     #   'glimp'  - Cobalt's own EGL + GLES2 implementation. This requires a
     #              valid Glimp implementation for the platform.
     #   'angle'  - A DirectX-to-OpenGL adaptation layer. This requires a valid
     #              ANGLE implementation for the platform.
     # Choosing an unsupported value will result in a GYP error:
     #   "cobalt/renderer/egl_and_gles/egl_and_gles_<gl_type>.gyp not found"
     'gl_type%': 'system_gles2',

     # Temporary indicator for Tizen - should eventually move to feature defines.
     'tizen_os%': 0,

     # The event polling mechanism available on this platform to support libevent.
     # Platforms may redefine to 'poll' if necessary.
     # Other mechanisms, e.g. devpoll, kqueue, select, are not yet supported.
     'sb_libevent_method%': 'epoll',

     # Used to indicate that the player is filter based.
     'sb_filter_based_player%': 1,

     # Used to enable benchmarks.
     'sb_enable_benchmark%': 0,

     # This variable dictates whether a given gyp target should be compiled with
     # optimization flags for size vs. speed.
     'optimize_target_for_speed%': 0,

     # Compiler configuration.

     # The following variables are used to specify compiler and linker
     # flags by build configuration. Platform specific .gypi includes and
     # .gyp targets can use them to add additional flags.

     'compiler_flags%': [],
     'linker_flags%': [],

     # TODO: Replace linker_flags_(config) with linker_shared_flags_(config)
     # and linker_executable_flags_(config) to distinguish the flags for
     # SharedLibraryLinker and ExecutableLinker.
     'compiler_flags_debug%': [],
     'compiler_flags_c_debug%': [],
     'compiler_flags_cc_debug%': [],
     'linker_flags_debug%': [],
     'defines_debug%': [],

     'compiler_flags_devel%': [],
     'compiler_flags_c_devel%': [],
     'compiler_flags_cc_devel%': [],
     'linker_flags_devel%': [],
     'defines_devel%': [],

     # For qa and gold configs, different compiler flags may be specified for
     # gyp targets that should be built for size than for speed. Targets which
     # specify 'optimize_target_for_speed == 1', will compile with flags:
     #   ['compiler_flags_*<config>', 'compiler_flags_*<config>_speed'].
     # Otherwise, targets will use compiler flags:
     #   ['compiler_flags_*<config>', 'compiler_flags_*<config>_size'].
     # Platforms may decide to use the same optimization flags for both
     # target types by leaving the '*_size' and '*_speed' variables empty.
     'compiler_flags_qa%': [],
     'compiler_flags_qa_size%': [],
     'compiler_flags_qa_speed%': [],
     'compiler_flags_c_qa%': [],
     'compiler_flags_c_qa_size%': [],
     'compiler_flags_c_qa_speed%': [],
     'compiler_flags_cc_qa%': [],
     'compiler_flags_cc_qa_size%': [],
     'compiler_flags_cc_qa_speed%': [],
     'linker_flags_qa%': [],
     'defines_qa%': [],

     'compiler_flags_gold%': [],
     'compiler_flags_gold_size%': [],
     'compiler_flags_gold_speed%': [],
     'compiler_flags_c_gold%': [],
     'compiler_flags_c_gold_size%': [],
     'compiler_flags_c_gold_speed%': [],
     'compiler_flags_cc_gold%': [],
     'compiler_flags_cc_gold_size%': [],
     'compiler_flags_cc_gold_speed%': [],
     'linker_flags_gold%': [],
     'defines_gold%': [],

     'compiler_flags_host%': [],
     'compiler_flags_c_host%': [],
     'defines_host%': [],

     'platform_libraries%': [],

     # TODO: Remove these compatibility variables from Starboard.

     # List of platform-specific targets that get compiled into cobalt.
     'cobalt_platform_dependencies%': [],

     'conditions': [
       ['host_os=="linux"', {
         'conditions': [
           ['target_arch=="arm" or target_arch=="x86"', {
             # All the 32 bit CPU architectures v8 supports.
             'compiler_flags_cc_host%': [
               '-m32',
               '--std=gnu++14',
             ],
             'compiler_flags_host': [
               '-m32',
             ],
             'compiler_flags_host': [
               '-m32',
             ],
             'linker_flags_host%': [
               '-target', 'i386-unknown-linux-gnu',
               '-pthread',
               '-latomic',
             ],
           }, {
             'compiler_flags_cc_host%': [
               '--std=gnu++14',
             ],
             'linker_flags_host%': [
             '-pthread',
             ],
           }],
         ],
       }, {
         'compiler_flags_cc_host%': [],
         'linker_flags_host%': [],
       }],
     ],
   },

   'target_defaults': {
     'variables': {
       # The condition that operates on sb_pedantic_warnings is in a
       # target_conditions section, and will not have access to the default
       # fallback value of sb_pedantic_warnings at the top of this file,
       # or to the sb_pedantic_warnings variable placed at the root
       # variables scope of .gyp files, because those variables are not set at
       # target scope.  As a workaround, if sb_pedantic_warnings is not
       # set at target scope, define it in target scope to contain whatever
       # value it has during early variable expansion. That's enough to make
       # it available during target conditional processing.
       'sb_pedantic_warnings%': '<(sb_pedantic_warnings)',

       # This workaround is used to surface the default setting for the variable
       # 'optimize_target_for_speed' if the gyp target does not explicitly set
       # it.
       'optimize_target_for_speed%': '<(optimize_target_for_speed)',
     },
     'cflags': [ '<@(compiler_flags)' ],
     'ldflags': [ '<@(linker_flags)' ],
     'cflags_host': [ '<@(compiler_flags_host)', ],
     'cflags_c_host': [ '<@(compiler_flags_c_host)', ],
     'cflags_cc_host': [ '<@(compiler_flags_cc_host)', ],
     'ldflags_host': [ '<@(linker_flags_host)' ],

     # Allows any source file to include files relative to the source tree.
     'include_dirs': [ '<(DEPTH)' ],
     'libraries': [ '<@(platform_libraries)' ],

     'conditions': [
       ['final_executable_type=="shared_library"', {
         'target_conditions': [
           ['_toolset=="target"', {
             'defines': [
               # Rewrite main() functions into StarboardMain. TODO: This is a
               # hack, it would be better to be more surgical, here.
               'main=StarboardMain',
             ],
             'cflags': [
               # To link into a shared library on Linux and similar platforms,
               # the compiler must be told to generate Position Independent Code.
               # This appears to cause errors when linking the code statically,
               # however.
               '-fPIC',
             ],
           }],
         ],
       }],
       ['OS == "starboard"', {
         'target_conditions': [
           ['_toolset=="target"', {
             # Keeps common Starboard target changes in the starboard project.
             'includes': [
               '../../starboard/starboard_base_target.gypi',
             ],
           }],
         ],
       }],  # OS == "starboard"
     ],

     # TODO: Revisit and remove unused configurations.
     'configurations': {
       'debug_base': {
         'abstract': 1,
         # no optimization, include symbols:
         'cflags': [ '<@(compiler_flags_debug)' ],
         'cflags_c': [ '<@(compiler_flags_c_debug)' ],
         'cflags_cc': [ '<@(compiler_flags_cc_debug)' ],
         'ldflags': [ '<@(linker_flags_debug)' ],
         'defines': [
           '<@(defines_debug)',
           'STARBOARD_BUILD_TYPE_DEBUG',
           '_DEBUG',
         ],
       }, # end of debug_base
       'devel_base': {
         'abstract': 1,
         # optimize, include symbols:
         'cflags': [ '<@(compiler_flags_devel)' ],
         'cflags_c': [ '<@(compiler_flags_c_devel)' ],
         'cflags_cc': [ '<@(compiler_flags_cc_devel)' ],
         'ldflags': [ '<@(linker_flags_devel)' ],
         'defines': [
           '<@(defines_devel)',
           'STARBOARD_BUILD_TYPE_DEVEL',
           '_DEBUG',
         ],
       }, # end of devel_base
       'qa_base': {
         'abstract': 1,
         # optimize:
         'target_conditions': [
           ['optimize_target_for_speed==1', {
             'cflags': [
               '<@(compiler_flags_qa)',
               '<@(compiler_flags_qa_speed)',
             ],
             'cflags_c': [
               '<@(compiler_flags_c_qa)',
               '<@(compiler_flags_c_qa_speed)',
             ],
             'cflags_cc': [
               '<@(compiler_flags_cc_qa)',
               '<@(compiler_flags_cc_qa_speed)',
             ],
           }, {
             'cflags': [
               '<@(compiler_flags_qa)',
               '<@(compiler_flags_qa_size)',
             ],
             'cflags_c': [
               '<@(compiler_flags_c_qa)',
               '<@(compiler_flags_c_qa_size)',
             ],
             'cflags_cc': [
               '<@(compiler_flags_cc_qa)',
               '<@(compiler_flags_cc_qa_size)',
             ],
           }]
         ],
         'ldflags': [ '<@(linker_flags_qa)' ],
         'defines': [
           '<@(defines_qa)',
           'STARBOARD_BUILD_TYPE_QA',
           'NDEBUG',
         ],
       }, # end of devel_base
       'gold_base': {
         'abstract': 1,
         # optimize:
         'target_conditions': [
           ['optimize_target_for_speed==1', {
             'cflags': [
               '<@(compiler_flags_gold)',
               '<@(compiler_flags_gold_speed)',
             ],
             'cflags_c': [
               '<@(compiler_flags_c_gold)',
               '<@(compiler_flags_c_gold_speed)',
             ],
             'cflags_cc': [
               '<@(compiler_flags_cc_gold)',
               '<@(compiler_flags_cc_gold_speed)',
             ],
           }, {
             'cflags': [
               '<@(compiler_flags_gold)',
               '<@(compiler_flags_gold_size)',
             ],
             'cflags_c': [
               '<@(compiler_flags_c_gold)',
               '<@(compiler_flags_c_gold_size)',
             ],
             'cflags_cc': [
               '<@(compiler_flags_cc_gold)',
               '<@(compiler_flags_cc_gold_size)',
             ],
           }]
         ],
         'ldflags': [ '<@(linker_flags_gold)' ],
         'defines': [
           '<@(defines_gold)',
           'STARBOARD_BUILD_TYPE_GOLD',
           'NDEBUG',
         ],
       }, # end of gold_base
     }, # end of configurations
   }, # end of target_defaults

   'conditions': [
     ['cobalt_config != "gold"', {
       'variables' : {
         'sb_allows_memory_tracking': 1,
       },
     },
     {
       'variables' : {
         'sb_allows_memory_tracking': 0,
       },
     }],
   ],
 }
	# Copyright 2017 The Cobalt Authors. All Rights Reserved.
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.

	#####################################################################
	# If you modify this file, PLEASE REMEMBER TO UPDATE
	# //starboard/build/config/base.gni AS WELL
	#####################################################################

	# This contains the defaults and documentation for all Starboard-defined GYP
	# variables. Applications that build on top of Starboard are likely to have
	# their own base configuration, as well.
	#
	# starboard/build/gyp_runner includes this file automatically in all .gyp files
	# that it processes.

	{
	'variables': {
	# We need to define some variables inside of an inner 'variables' scope
	# so that they can be referenced by other outer variables here. Also, it
	# allows for the specification of default values that get referenced by
	# a top level scope.
	'variables': {
	'sb_enable_lib%': 0,
	# TODO: Remove the "data" subdirectory.
	'sb_static_contents_output_data_dir%': '<(PRODUCT_DIR)/content/data',
	'sb_deploy_output_dir%': '<(PRODUCT_DIR)/deploy',
	'sb_evergreen_compatible%': 0,
	'sb_evergreen_compatible_libunwind%': 0,
	'sb_evergreen_compatible_lite%': 0,
	},

	# Enables the yasm compiler to be used to compile .asm files.
	'yasm_exists%': 0,

	# Where yasm can be found on the target device.
	'path_to_yasm%': "yasm",

	# The Starboard API version of the current build configuration. The default
	# value is meant to be overridden by a Starboard ABI file.
	'sb_api_version%': 0,

	# Enabling this variable enables pedantic levels of warnings for the current
	# toolchain.
	'sb_pedantic_warnings%': 0,

	# Enables embedding Cobalt as a shared library within another app. This
	# requires a 'lib' starboard implementation for the corresponding platform.
	'sb_enable_lib%': '<(sb_enable_lib)',

	# Disables an NPLB audit of C++17 support.
	'sb_disable_cpp17_audit': 0,

	# When this is set to true, the web bindings for the microphone
	# are disabled
	'sb_disable_microphone_idl%': 0,

	# Directory path to static contents' data.
	'sb_static_contents_output_data_dir%': '<(sb_static_contents_output_data_dir)',

	# Top-level directory for staging deploy build output. Platform deploy
	# actions should use <(target_deploy_dir) defined in deploy.gypi to place
	# artifacts for each deploy target in its own subdirectoy.
	'sb_deploy_output_dir%': '<(sb_deploy_output_dir)',

	# Contains the name of the hosting OS. The value is defined by the gyp
	# wrapper script.
	'host_os%': 'win',

	# The target platform id as a string, like 'linux-x64x11', 'win32', etc..
	'sb_target_platform': '',

	# Whether this is an evergreen build.
	'sb_evergreen': 0,

	# Whether this is an evergreen compatible platform. A compatible platform
	# can run the elf_loader and launch the evergreen build.
	'sb_evergreen_compatible%': '<(sb_evergreen_compatible)',

	# Whether to use the libunwind library on evergreen compatible platform.
	'sb_evergreen_compatible_libunwind%': '<(sb_evergreen_compatible_libunwind)',

	# Whether to adopt Evergreen Lite on the evergreen compatible platform.
	'sb_evergreen_compatible_lite%': '<(sb_evergreen_compatible_lite)',

	# The operating system of the target, separate from the target_arch. In many
	# cases, an 'unknown' value is fine, but, if set to 'linux', then we can
	# assume some things, and it'll save us some configuration time.
	'target_os%': 'unknown',

	# The variables allow changing the target type on platforms where the
	# native code may require an additional packaging step (ex. Android).
	'gtest_target_type%': 'executable',
	'final_executable_type%': 'executable',

	# Halt execution on failure to allocate memory.
	'abort_on_allocation_failure%': 1,

	# The relative path from src/ to the directory containing the
	# starboard_platform.gyp file. It is currently set to
	# 'starboard/<(target_arch)' to make semi-starboard platforms work.
	# TODO: Set the default value to '' once all semi-starboard platforms are
	# moved to starboard.
	'starboard_path%': 'starboard/<(target_arch)',

	# The source of EGL and GLES headers and libraries.
	# Valid values (case and everything sensitive!):
	# 'none' - No EGL + GLES implementation is available on this platform.
	# 'system_gles3' - Deprecated. Use system_gles2 instead.
	# Use the system implementation of EGL + GLES3. The
	# headers and libraries must be on the system include and
	# link paths.
	# 'system_gles2' - Use the system implementation of EGL + GLES2. The
	# headers and libraries must be on the system include and
	# link paths.
	# 'glimp' - Cobalt's own EGL + GLES2 implementation. This requires a
	# valid Glimp implementation for the platform.
	# 'angle' - A DirectX-to-OpenGL adaptation layer. This requires a valid
	# ANGLE implementation for the platform.
	# Choosing an unsupported value will result in a GYP error:
	# "cobalt/renderer/egl_and_gles/egl_and_gles_<gl_type>.gyp not found"
	'gl_type%': 'system_gles2',

	# Temporary indicator for Tizen - should eventually move to feature defines.
	'tizen_os%': 0,

	# The event polling mechanism available on this platform to support libevent.
	# Platforms may redefine to 'poll' if necessary.
	# Other mechanisms, e.g. devpoll, kqueue, select, are not yet supported.
	'sb_libevent_method%': 'epoll',

	# Used to indicate that the player is filter based.
	'sb_filter_based_player%': 1,

	# Used to enable benchmarks.
	'sb_enable_benchmark%': 0,

	# This variable dictates whether a given gyp target should be compiled with
	# optimization flags for size vs. speed.
	'optimize_target_for_speed%': 0,

	# Compiler configuration.

	# The following variables are used to specify compiler and linker
	# flags by build configuration. Platform specific .gypi includes and
	# .gyp targets can use them to add additional flags.

	'compiler_flags%': [],
	'linker_flags%': [],

	# TODO: Replace linker_flags_(config) with linker_shared_flags_(config)
	# and linker_executable_flags_(config) to distinguish the flags for
	# SharedLibraryLinker and ExecutableLinker.
	'compiler_flags_debug%': [],
	'compiler_flags_c_debug%': [],
	'compiler_flags_cc_debug%': [],
	'linker_flags_debug%': [],
	'defines_debug%': [],

	'compiler_flags_devel%': [],
	'compiler_flags_c_devel%': [],
	'compiler_flags_cc_devel%': [],
	'linker_flags_devel%': [],
	'defines_devel%': [],

	# For qa and gold configs, different compiler flags may be specified for
	# gyp targets that should be built for size than for speed. Targets which
	# specify 'optimize_target_for_speed == 1', will compile with flags:
	# ['compiler_flags_<config>', 'compiler_flags_<config>_speed'].
	# Otherwise, targets will use compiler flags:
	# ['compiler_flags_<config>', 'compiler_flags_<config>_size'].
	# Platforms may decide to use the same optimization flags for both
	# target types by leaving the '_size' and '_speed' variables empty.
	'compiler_flags_qa%': [],
	'compiler_flags_qa_size%': [],
	'compiler_flags_qa_speed%': [],
	'compiler_flags_c_qa%': [],
	'compiler_flags_c_qa_size%': [],
	'compiler_flags_c_qa_speed%': [],
	'compiler_flags_cc_qa%': [],
	'compiler_flags_cc_qa_size%': [],
	'compiler_flags_cc_qa_speed%': [],
	'linker_flags_qa%': [],
	'defines_qa%': [],

	'compiler_flags_gold%': [],
	'compiler_flags_gold_size%': [],
	'compiler_flags_gold_speed%': [],
	'compiler_flags_c_gold%': [],
	'compiler_flags_c_gold_size%': [],
	'compiler_flags_c_gold_speed%': [],
	'compiler_flags_cc_gold%': [],
	'compiler_flags_cc_gold_size%': [],
	'compiler_flags_cc_gold_speed%': [],
	'linker_flags_gold%': [],
	'defines_gold%': [],

	'compiler_flags_host%': [],
	'compiler_flags_c_host%': [],
	'defines_host%': [],

	'platform_libraries%': [],

	# TODO: Remove these compatibility variables from Starboard.

	# List of platform-specific targets that get compiled into cobalt.
	'cobalt_platform_dependencies%': [],

	'conditions': [
	['host_os=="linux"', {
	'conditions': [
	['target_arch=="arm" or target_arch=="x86"', {
	# All the 32 bit CPU architectures v8 supports.
	'compiler_flags_cc_host%': [
	'-m32',
	'--std=gnu++14',
	],
	'compiler_flags_host': [
	'-m32',
	],
	'compiler_flags_host': [
	'-m32',
	],
	'linker_flags_host%': [
	'-target', 'i386-unknown-linux-gnu',
	'-pthread',
	'-latomic',
	],
	}, {
	'compiler_flags_cc_host%': [
	'--std=gnu++14',
	],
	'linker_flags_host%': [
	'-pthread',
	],
	}],
	],
	}, {
	'compiler_flags_cc_host%': [],
	'linker_flags_host%': [],
	}],
	],
	},

	'target_defaults': {
	'variables': {
	# The condition that operates on sb_pedantic_warnings is in a
	# target_conditions section, and will not have access to the default
	# fallback value of sb_pedantic_warnings at the top of this file,
	# or to the sb_pedantic_warnings variable placed at the root
	# variables scope of .gyp files, because those variables are not set at
	# target scope. As a workaround, if sb_pedantic_warnings is not
	# set at target scope, define it in target scope to contain whatever
	# value it has during early variable expansion. That's enough to make
	# it available during target conditional processing.
	'sb_pedantic_warnings%': '<(sb_pedantic_warnings)',

	# This workaround is used to surface the default setting for the variable
	# 'optimize_target_for_speed' if the gyp target does not explicitly set
	# it.
	'optimize_target_for_speed%': '<(optimize_target_for_speed)',
	},
	'cflags': [ '<@(compiler_flags)' ],
	'ldflags': [ '<@(linker_flags)' ],
	'cflags_host': [ '<@(compiler_flags_host)', ],
	'cflags_c_host': [ '<@(compiler_flags_c_host)', ],
	'cflags_cc_host': [ '<@(compiler_flags_cc_host)', ],
	'ldflags_host': [ '<@(linker_flags_host)' ],

	# Allows any source file to include files relative to the source tree.
	'include_dirs': [ '<(DEPTH)' ],
	'libraries': [ '<@(platform_libraries)' ],

	'conditions': [
	['final_executable_type=="shared_library"', {
	'target_conditions': [
	['_toolset=="target"', {
	'defines': [
	# Rewrite main() functions into StarboardMain. TODO: This is a
	# hack, it would be better to be more surgical, here.
	'main=StarboardMain',
	],
	'cflags': [
	# To link into a shared library on Linux and similar platforms,
	# the compiler must be told to generate Position Independent Code.
	# This appears to cause errors when linking the code statically,
	# however.
	'-fPIC',
	],
	}],
	],
	}],
	['OS == "starboard"', {
	'target_conditions': [
	['_toolset=="target"', {
	# Keeps common Starboard target changes in the starboard project.
	'includes': [
	'../../starboard/starboard_base_target.gypi',
	],
	}],
	],
	}], # OS == "starboard"
	],

	# TODO: Revisit and remove unused configurations.
	'configurations': {
	'debug_base': {
	'abstract': 1,
	# no optimization, include symbols:
	'cflags': [ '<@(compiler_flags_debug)' ],
	'cflags_c': [ '<@(compiler_flags_c_debug)' ],
	'cflags_cc': [ '<@(compiler_flags_cc_debug)' ],
	'ldflags': [ '<@(linker_flags_debug)' ],
	'defines': [
	'<@(defines_debug)',
	'STARBOARD_BUILD_TYPE_DEBUG',
	'_DEBUG',
	],
	}, # end of debug_base
	'devel_base': {
	'abstract': 1,
	# optimize, include symbols:
	'cflags': [ '<@(compiler_flags_devel)' ],
	'cflags_c': [ '<@(compiler_flags_c_devel)' ],
	'cflags_cc': [ '<@(compiler_flags_cc_devel)' ],
	'ldflags': [ '<@(linker_flags_devel)' ],
	'defines': [
	'<@(defines_devel)',
	'STARBOARD_BUILD_TYPE_DEVEL',
	'_DEBUG',
	],
	}, # end of devel_base
	'qa_base': {
	'abstract': 1,
	# optimize:
	'target_conditions': [
	['optimize_target_for_speed==1', {
	'cflags': [
	'<@(compiler_flags_qa)',
	'<@(compiler_flags_qa_speed)',
	],
	'cflags_c': [
	'<@(compiler_flags_c_qa)',
	'<@(compiler_flags_c_qa_speed)',
	],
	'cflags_cc': [
	'<@(compiler_flags_cc_qa)',
	'<@(compiler_flags_cc_qa_speed)',
	],
	}, {
	'cflags': [
	'<@(compiler_flags_qa)',
	'<@(compiler_flags_qa_size)',
	],
	'cflags_c': [
	'<@(compiler_flags_c_qa)',
	'<@(compiler_flags_c_qa_size)',
	],
	'cflags_cc': [
	'<@(compiler_flags_cc_qa)',
	'<@(compiler_flags_cc_qa_size)',
	],
	}]
	],
	'ldflags': [ '<@(linker_flags_qa)' ],
	'defines': [
	'<@(defines_qa)',
	'STARBOARD_BUILD_TYPE_QA',
	'NDEBUG',
	],
	}, # end of devel_base
	'gold_base': {
	'abstract': 1,
	# optimize:
	'target_conditions': [
	['optimize_target_for_speed==1', {
	'cflags': [
	'<@(compiler_flags_gold)',
	'<@(compiler_flags_gold_speed)',
	],
	'cflags_c': [
	'<@(compiler_flags_c_gold)',
	'<@(compiler_flags_c_gold_speed)',
	],
	'cflags_cc': [
	'<@(compiler_flags_cc_gold)',
	'<@(compiler_flags_cc_gold_speed)',
	],
	}, {
	'cflags': [
	'<@(compiler_flags_gold)',
	'<@(compiler_flags_gold_size)',
	],
	'cflags_c': [
	'<@(compiler_flags_c_gold)',
	'<@(compiler_flags_c_gold_size)',
	],
	'cflags_cc': [
	'<@(compiler_flags_cc_gold)',
	'<@(compiler_flags_cc_gold_size)',
	],
	}]
	],
	'ldflags': [ '<@(linker_flags_gold)' ],
	'defines': [
	'<@(defines_gold)',
	'STARBOARD_BUILD_TYPE_GOLD',
	'NDEBUG',
	],
	}, # end of gold_base
	}, # end of configurations
	}, # end of target_defaults

	'conditions': [
	['cobalt_config != "gold"', {
	'variables' : {
	'sb_allows_memory_tracking': 1,
	},
	},
	{
	'variables' : {
	'sb_allows_memory_tracking': 0,
	},
	}],
	],
	}