Adding upstream version 1.0.1.upstream/1.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 455 insertions, 0 deletions

diff --git a/mesonbuild/envconfig.py b/mesonbuild/envconfig.py
new file mode 100644
index 0000000..90117c1
--- /dev/null
+++ b/mesonbuild/envconfig.py
@@ -0,0 +1,455 @@
+# Copyright 2012-2016 The Meson development team
+
+# 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.
+from __future__ import annotations
+
+from dataclasses import dataclass
+import subprocess
+import typing as T
+from enum import Enum
+
+from . import mesonlib
+from .mesonlib import EnvironmentException, HoldableObject
+from . import mlog
+from pathlib import Path
+
+
+# These classes contains all the data pulled from configuration files (native
+# and cross file currently), and also assists with the reading environment
+# variables.
+#
+# At this time there isn't an ironclad difference between this an other sources
+# of state like `coredata`. But one rough guide is much what is in `coredata` is
+# the *output* of the configuration process: the final decisions after tests.
+# This, on the other hand has *inputs*. The config files are parsed, but
+# otherwise minimally transformed. When more complex fallbacks (environment
+# detection) exist, they are defined elsewhere as functions that construct
+# instances of these classes.
+
+
+known_cpu_families = (
+    'aarch64',
+    'alpha',
+    'arc',
+    'arm',
+    'avr',
+    'c2000',
+    'csky',
+    'dspic',
+    'e2k',
+    'ft32',
+    'ia64',
+    'loongarch64',
+    'm68k',
+    'microblaze',
+    'mips',
+    'mips64',
+    'msp430',
+    'parisc',
+    'pic24',
+    'ppc',
+    'ppc64',
+    'riscv32',
+    'riscv64',
+    'rl78',
+    'rx',
+    's390',
+    's390x',
+    'sh4',
+    'sparc',
+    'sparc64',
+    'wasm32',
+    'wasm64',
+    'x86',
+    'x86_64',
+)
+
+# It would feel more natural to call this "64_BIT_CPU_FAMILIES", but
+# python identifiers cannot start with numbers
+CPU_FAMILIES_64_BIT = [
+    'aarch64',
+    'alpha',
+    'ia64',
+    'loongarch64',
+    'mips64',
+    'ppc64',
+    'riscv64',
+    's390x',
+    'sparc64',
+    'wasm64',
+    'x86_64',
+]
+
+# Map from language identifiers to environment variables.
+ENV_VAR_COMPILER_MAP: T.Mapping[str, str] = {
+    # Compilers
+    'c': 'CC',
+    'cpp': 'CXX',
+    'cs': 'CSC',
+    'd': 'DC',
+    'fortran': 'FC',
+    'objc': 'OBJC',
+    'objcpp': 'OBJCXX',
+    'rust': 'RUSTC',
+    'vala': 'VALAC',
+    'nasm': 'NASM',
+
+    # Linkers
+    'c_ld': 'CC_LD',
+    'cpp_ld': 'CXX_LD',
+    'd_ld': 'DC_LD',
+    'fortran_ld': 'FC_LD',
+    'objc_ld': 'OBJC_LD',
+    'objcpp_ld': 'OBJCXX_LD',
+    'rust_ld': 'RUSTC_LD',
+}
+
+# Map from utility names to environment variables.
+ENV_VAR_TOOL_MAP: T.Mapping[str, str] = {
+    # Binutils
+    'ar': 'AR',
+    'as': 'AS',
+    'ld': 'LD',
+    'nm': 'NM',
+    'objcopy': 'OBJCOPY',
+    'objdump': 'OBJDUMP',
+    'ranlib': 'RANLIB',
+    'readelf': 'READELF',
+    'size': 'SIZE',
+    'strings': 'STRINGS',
+    'strip': 'STRIP',
+    'windres': 'WINDRES',
+
+    # Other tools
+    'cmake': 'CMAKE',
+    'qmake': 'QMAKE',
+    'pkgconfig': 'PKG_CONFIG',
+    'pkg-config': 'PKG_CONFIG',
+    'make': 'MAKE',
+    'vapigen': 'VAPIGEN',
+    'llvm-config': 'LLVM_CONFIG',
+}
+
+ENV_VAR_PROG_MAP = {**ENV_VAR_COMPILER_MAP, **ENV_VAR_TOOL_MAP}
+
+# Deprecated environment variables mapped from the new variable to the old one
+# Deprecated in 0.54.0
+DEPRECATED_ENV_PROG_MAP: T.Mapping[str, str] = {
+    'd_ld': 'D_LD',
+    'fortran_ld': 'F_LD',
+    'rust_ld': 'RUST_LD',
+    'objcpp_ld': 'OBJCPP_LD',
+}
+
+class CMakeSkipCompilerTest(Enum):
+    ALWAYS = 'always'
+    NEVER = 'never'
+    DEP_ONLY = 'dep_only'
+
+class Properties:
+    def __init__(
+            self,
+            properties: T.Optional[T.Dict[str, T.Optional[T.Union[str, bool, int, T.List[str]]]]] = None,
+    ):
+        self.properties = properties or {}  # type: T.Dict[str, T.Optional[T.Union[str, bool, int, T.List[str]]]]
+
+    def has_stdlib(self, language: str) -> bool:
+        return language + '_stdlib' in self.properties
+
+    # Some of get_stdlib, get_root, get_sys_root are wider than is actually
+    # true, but without heterogenious dict annotations it's not practical to
+    # narrow them
+    def get_stdlib(self, language: str) -> T.Union[str, T.List[str]]:
+        stdlib = self.properties[language + '_stdlib']
+        if isinstance(stdlib, str):
+            return stdlib
+        assert isinstance(stdlib, list)
+        for i in stdlib:
+            assert isinstance(i, str)
+        return stdlib
+
+    def get_root(self) -> T.Optional[str]:
+        root = self.properties.get('root', None)
+        assert root is None or isinstance(root, str)
+        return root
+
+    def get_sys_root(self) -> T.Optional[str]:
+        sys_root = self.properties.get('sys_root', None)
+        assert sys_root is None or isinstance(sys_root, str)
+        return sys_root
+
+    def get_pkg_config_libdir(self) -> T.Optional[T.List[str]]:
+        p = self.properties.get('pkg_config_libdir', None)
+        if p is None:
+            return p
+        res = mesonlib.listify(p)
+        for i in res:
+            assert isinstance(i, str)
+        return res
+
+    def get_cmake_defaults(self) -> bool:
+        if 'cmake_defaults' not in self.properties:
+            return True
+        res = self.properties['cmake_defaults']
+        assert isinstance(res, bool)
+        return res
+
+    def get_cmake_toolchain_file(self) -> T.Optional[Path]:
+        if 'cmake_toolchain_file' not in self.properties:
+            return None
+        raw = self.properties['cmake_toolchain_file']
+        assert isinstance(raw, str)
+        cmake_toolchain_file = Path(raw)
+        if not cmake_toolchain_file.is_absolute():
+            raise EnvironmentException(f'cmake_toolchain_file ({raw}) is not absolute')
+        return cmake_toolchain_file
+
+    def get_cmake_skip_compiler_test(self) -> CMakeSkipCompilerTest:
+        if 'cmake_skip_compiler_test' not in self.properties:
+            return CMakeSkipCompilerTest.DEP_ONLY
+        raw = self.properties['cmake_skip_compiler_test']
+        assert isinstance(raw, str)
+        try:
+            return CMakeSkipCompilerTest(raw)
+        except ValueError:
+            raise EnvironmentException(
+                '"{}" is not a valid value for cmake_skip_compiler_test. Supported values are {}'
+                .format(raw, [e.value for e in CMakeSkipCompilerTest]))
+
+    def get_cmake_use_exe_wrapper(self) -> bool:
+        if 'cmake_use_exe_wrapper' not in self.properties:
+            return True
+        res = self.properties['cmake_use_exe_wrapper']
+        assert isinstance(res, bool)
+        return res
+
+    def get_java_home(self) -> T.Optional[Path]:
+        value = T.cast('T.Optional[str]', self.properties.get('java_home'))
+        return Path(value) if value else None
+
+    def __eq__(self, other: object) -> bool:
+        if isinstance(other, type(self)):
+            return self.properties == other.properties
+        return NotImplemented
+
+    # TODO consider removing so Properties is less freeform
+    def __getitem__(self, key: str) -> T.Optional[T.Union[str, bool, int, T.List[str]]]:
+        return self.properties[key]
+
+    # TODO consider removing so Properties is less freeform
+    def __contains__(self, item: T.Union[str, bool, int, T.List[str]]) -> bool:
+        return item in self.properties
+
+    # TODO consider removing, for same reasons as above
+    def get(self, key: str, default: T.Optional[T.Union[str, bool, int, T.List[str]]] = None) -> T.Optional[T.Union[str, bool, int, T.List[str]]]:
+        return self.properties.get(key, default)
+
+@dataclass(unsafe_hash=True)
+class MachineInfo(HoldableObject):
+    system: str
+    cpu_family: str
+    cpu: str
+    endian: str
+
+    def __post_init__(self) -> None:
+        self.is_64_bit: bool = self.cpu_family in CPU_FAMILIES_64_BIT
+
+    def __repr__(self) -> str:
+        return f'<MachineInfo: {self.system} {self.cpu_family} ({self.cpu})>'
+
+    @classmethod
+    def from_literal(cls, literal: T.Dict[str, str]) -> 'MachineInfo':
+        minimum_literal = {'cpu', 'cpu_family', 'endian', 'system'}
+        if set(literal) < minimum_literal:
+            raise EnvironmentException(
+                f'Machine info is currently {literal}\n' +
+                'but is missing {}.'.format(minimum_literal - set(literal)))
+
+        cpu_family = literal['cpu_family']
+        if cpu_family not in known_cpu_families:
+            mlog.warning(f'Unknown CPU family {cpu_family}, please report this at https://github.com/mesonbuild/meson/issues/new')
+
+        endian = literal['endian']
+        if endian not in ('little', 'big'):
+            mlog.warning(f'Unknown endian {endian}')
+
+        return cls(literal['system'], cpu_family, literal['cpu'], endian)
+
+    def is_windows(self) -> bool:
+        """
+        Machine is windows?
+        """
+        return self.system == 'windows'
+
+    def is_cygwin(self) -> bool:
+        """
+        Machine is cygwin?
+        """
+        return self.system == 'cygwin'
+
+    def is_linux(self) -> bool:
+        """
+        Machine is linux?
+        """
+        return self.system == 'linux'
+
+    def is_darwin(self) -> bool:
+        """
+        Machine is Darwin (iOS/tvOS/OS X)?
+        """
+        return self.system in {'darwin', 'ios', 'tvos'}
+
+    def is_android(self) -> bool:
+        """
+        Machine is Android?
+        """
+        return self.system == 'android'
+
+    def is_haiku(self) -> bool:
+        """
+        Machine is Haiku?
+        """
+        return self.system == 'haiku'
+
+    def is_netbsd(self) -> bool:
+        """
+        Machine is NetBSD?
+        """
+        return self.system == 'netbsd'
+
+    def is_openbsd(self) -> bool:
+        """
+        Machine is OpenBSD?
+        """
+        return self.system == 'openbsd'
+
+    def is_dragonflybsd(self) -> bool:
+        """Machine is DragonflyBSD?"""
+        return self.system == 'dragonfly'
+
+    def is_freebsd(self) -> bool:
+        """Machine is FreeBSD?"""
+        return self.system == 'freebsd'
+
+    def is_sunos(self) -> bool:
+        """Machine is illumos or Solaris?"""
+        return self.system == 'sunos'
+
+    def is_hurd(self) -> bool:
+        """
+        Machine is GNU/Hurd?
+        """
+        return self.system == 'gnu'
+
+    def is_irix(self) -> bool:
+        """Machine is IRIX?"""
+        return self.system.startswith('irix')
+
+    # Various prefixes and suffixes for import libraries, shared libraries,
+    # static libraries, and executables.
+    # Versioning is added to these names in the backends as-needed.
+    def get_exe_suffix(self) -> str:
+        if self.is_windows() or self.is_cygwin():
+            return 'exe'
+        else:
+            return ''
+
+    def get_object_suffix(self) -> str:
+        if self.is_windows():
+            return 'obj'
+        else:
+            return 'o'
+
+    def libdir_layout_is_win(self) -> bool:
+        return self.is_windows() or self.is_cygwin()
+
+class BinaryTable:
+
+    def __init__(
+            self,
+            binaries: T.Optional[T.Dict[str, T.Union[str, T.List[str]]]] = None,
+    ):
+        self.binaries: T.Dict[str, T.List[str]] = {}
+        if binaries:
+            for name, command in binaries.items():
+                if not isinstance(command, (list, str)):
+                    raise mesonlib.MesonException(
+                        f'Invalid type {command!r} for entry {name!r} in cross file')
+                self.binaries[name] = mesonlib.listify(command)
+
+    @staticmethod
+    def detect_ccache() -> T.List[str]:
+        try:
+            subprocess.check_call(['ccache', '--version'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        except (OSError, subprocess.CalledProcessError):
+            return []
+        return ['ccache']
+
+    @staticmethod
+    def detect_sccache() -> T.List[str]:
+        try:
+            subprocess.check_call(['sccache', '--version'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        except (OSError, subprocess.CalledProcessError):
+            return []
+        return ['sccache']
+
+    @staticmethod
+    def detect_compiler_cache() -> T.List[str]:
+        # Sccache is "newer" so it is assumed that people would prefer it by default.
+        cache = BinaryTable.detect_sccache()
+        if cache:
+            return cache
+        return BinaryTable.detect_ccache()
+
+    @classmethod
+    def parse_entry(cls, entry: T.Union[str, T.List[str]]) -> T.Tuple[T.List[str], T.List[str]]:
+        compiler = mesonlib.stringlistify(entry)
+        # Ensure ccache exists and remove it if it doesn't
+        if compiler[0] == 'ccache':
+            compiler = compiler[1:]
+            ccache = cls.detect_ccache()
+        elif compiler[0] == 'sccache':
+            compiler = compiler[1:]
+            ccache = cls.detect_sccache()
+        else:
+            ccache = []
+        # Return value has to be a list of compiler 'choices'
+        return compiler, ccache
+
+    def lookup_entry(self, name: str) -> T.Optional[T.List[str]]:
+        """Lookup binary in cross/native file and fallback to environment.
+
+        Returns command with args as list if found, Returns `None` if nothing is
+        found.
+        """
+        command = self.binaries.get(name)
+        if not command:
+            return None
+        elif not command[0].strip():
+            return None
+        return command
+
+class CMakeVariables:
+    def __init__(self, variables: T.Optional[T.Dict[str, T.Any]] = None) -> None:
+        variables = variables or {}
+        self.variables = {}  # type: T.Dict[str, T.List[str]]
+
+        for key, value in variables.items():
+            value = mesonlib.listify(value)
+            for i in value:
+                if not isinstance(i, str):
+                    raise EnvironmentException(f"Value '{i}' of CMake variable '{key}' defined in a machine file is a {type(i).__name__} and not a str")
+            self.variables[key] = value
+
+    def get_variables(self) -> T.Dict[str, T.List[str]]:
+        return self.variables