Source code for spack.platforms.darwin

# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
# SPDX-License-Identifier: (Apache-2.0 OR MIT)

import platform as py_platform

import archspec.cpu

from spack.operating_systems.mac_os import MacOs

from ._platform import Platform

[docs]class Darwin(Platform): priority = 89 binary_formats = ['macho'] def __init__(self): super(Darwin, self).__init__('darwin') for name in archspec.cpu.TARGETS: self.add_target(name, self.default = self.front_end = self.default self.back_end = self.default mac_os = MacOs() self.default_os = str(mac_os) self.front_os = str(mac_os) self.back_os = str(mac_os) self.add_operating_system(str(mac_os), mac_os)
[docs] @classmethod def detect(cls): return 'darwin' in py_platform.system().lower()
[docs] def setup_platform_environment(self, pkg, env): """Specify deployment target based on target OS version. The ``MACOSX_DEPLOYMENT_TARGET`` environment variable provides a default ``-mmacosx-version-min`` argument for GCC and Clang compilers, as well as the default value of ``CMAKE_OSX_DEPLOYMENT_TARGET`` for CMake-based build systems. The default value for the deployment target is usually the major version (11, 10.16, ...) for CMake and Clang, but some versions of GCC specify a minor component as well (11.3), leading to numerous link warnings about inconsistent or incompatible target versions. Setting the environment variable ensures consistent versions for an install toolchain target, even when the host macOS version changes. TODO: it may be necessary to add SYSTEM_VERSION_COMPAT for older versions of the macosx developer tools; see for discussion. """ os = self.operating_sys[pkg.spec.os] version = os.version if len(version) == 1: # Version has only one component: add a minor version to prevent # potential errors with `ld`, # which fails with `-macosx_version_min 11` # but succeeds with `-macosx_version_min 11.0`. # Most compilers seem to perform this translation automatically, # but older GCC does not. version = str(version) + '.0' env.set('MACOSX_DEPLOYMENT_TARGET', str(version))