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# Copyright 2020 The Bazel 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.
"""Definition of incoming apple crosstool transition."""
transition = _builtins.toplevel.transition
def _cpu_string(platform_type, settings):
arch = _determine_single_architecture(platform_type, settings)
if platform_type == MACOS:
return "darwin_{}".format(arch)
return "{}_{}".format(platform_type, arch)
def _determine_single_architecture(platform_type, settings):
apple_split_cpu = settings["//command_line_option:apple_split_cpu"]
if apple_split_cpu != None and len(apple_split_cpu) > 0:
return apple_split_cpu
if platform_type == IOS:
ios_cpus = settings["//command_line_option:ios_multi_cpus"]
if len(ios_cpus) > 0:
return ios_cpus[0]
cpu_value = settings["//command_line_option:cpu"]
if cpu_value.startswith(IOS_CPU_PREFIX):
return cpu_value[len(IOS_CPU_PREFIX):]
if cpu_value == "darwin_arm64":
return "sim_arm64"
return DEFAULT_IOS_CPU
if platform_type == WATCHOS:
watchos_cpus = settings["//command_line_option:watchos_cpus"]
if len(watchos_cpus) == 0:
return DEFAULT_WATCHOS_CPU
return watchos_cpus[0]
if platform_type == TVOS:
tvos_cpus = settings["//command_line_option:tvos_cpus"]
if len(tvos_cpus) == 0:
return DEFAULT_TVOS_CPU
return tvos_cpus[0]
if platform_type == MACOS:
macos_cpus = settings["//command_line_option:macos_cpus"]
if macos_cpus:
return macos_cpus[0]
cpu_value = settings["//command_line_option:cpu"]
if cpu_value.startswith(DARWIN_CPU_PREFIX):
return cpu_value[len(DARWIN_CPU_PREFIX):]
return DEFAULT_MACOS_CPU
if platform_type == CATALYST:
catalyst_cpus = settings["//command_line_option:catalyst_cpus"]
if len(catalyst_cpus) == 0:
return DEFAULT_CATALYST_CPU
return catalyst_cpus[0]
fail("ERROR: Unhandled platform type {}".format(platform_type))
IOS = "ios"
WATCHOS = "watchos"
TVOS = "tvos"
MACOS = "macos"
CATALYST = "catalyst"
IOS_CPU_PREFIX = "ios_"
DARWIN_CPU_PREFIX = "darwin_"
DEFAULT_IOS_CPU = "x86_64"
DEFAULT_WATCHOS_CPU = "i386"
DEFAULT_TVOS_CPU = "x86_64"
DEFAULT_MACOS_CPU = "x86_64"
DEFAULT_CATALYST_CPU = "x86_64"
def _output_dictionary(settings, cpu, platform_type, platforms):
return {
"//command_line_option:apple configuration distinguisher": "applebin_" + platform_type,
"//command_line_option:compiler": settings["//command_line_option:apple_compiler"],
"//command_line_option:cpu": cpu,
"//command_line_option:crosstool_top": (
settings["//command_line_option:apple_crosstool_top"]
),
"//command_line_option:platforms": platforms,
"//command_line_option:fission": [],
"//command_line_option:grte_top": settings["//command_line_option:apple_grte_top"],
}
def _apple_crosstool_transition_impl(settings, attr):
platform_type = str(settings["//command_line_option:apple_platform_type"])
cpu = _cpu_string(platform_type, settings)
if settings["//command_line_option:incompatible_enable_apple_toolchain_resolution"]:
platforms = (
settings["//command_line_option:apple_platforms"] or
settings["//command_line_option:platforms"]
)
return _output_dictionary(settings, cpu, platform_type, platforms)
crosstools_are_equal = (
settings["//command_line_option:crosstool_top"] ==
settings["//command_line_option:apple_crosstool_top"]
)
if cpu == settings["//command_line_option:cpu"] and crosstools_are_equal:
# No changes necessary.
return {}
# Ensure platforms aren't set so that platform mapping can take place.
return _output_dictionary(settings, cpu, platform_type, [])
_apple_rule_base_transition_inputs = [
"//command_line_option:apple configuration distinguisher",
"//command_line_option:apple_compiler",
"//command_line_option:apple_platform_type",
"//command_line_option:apple_platforms",
"//command_line_option:apple_crosstool_top",
"//command_line_option:crosstool_top",
"//command_line_option:apple_split_cpu",
"//command_line_option:apple_grte_top",
"//command_line_option:cpu",
"//command_line_option:ios_multi_cpus",
"//command_line_option:macos_cpus",
"//command_line_option:tvos_cpus",
"//command_line_option:watchos_cpus",
"//command_line_option:catalyst_cpus",
"//command_line_option:platforms",
"//command_line_option:fission",
"//command_line_option:grte_top",
"//command_line_option:incompatible_enable_apple_toolchain_resolution",
]
_apple_rule_base_transition_outputs = [
"//command_line_option:apple configuration distinguisher",
"//command_line_option:compiler",
"//command_line_option:cpu",
"//command_line_option:crosstool_top",
"//command_line_option:platforms",
"//command_line_option:fission",
"//command_line_option:grte_top",
]
apple_crosstool_transition = transition(
implementation = _apple_crosstool_transition_impl,
inputs = _apple_rule_base_transition_inputs,
outputs = _apple_rule_base_transition_outputs,
)