Make meson crosss build simple

cross/darwin-aarch64.ini

@@ -0,0 +1,23 @@
+[binaries]
+c = 'aarch64-apple-darwin20.4-clang'
+cpp = 'aarch64-apple-darwin20.4-clang++'
+ar = 'aarch64-apple-darwin20.4-ar'
+strip = 'aarch64-apple-darwin20.4-strip'
+
+[host_machine]
+system = 'darwin'
+cpu_family = 'aarch64'
+cpu = 'aarch64'
+endian = 'little'
+
+[properties]
+needs_exe_wrapper = true
+
+[required_binaries]
+aarch64-apple-darwin20.4-clang = ''
+aarch64-apple-darwin20.4-clang++ = ''
+aarch64-apple-darwin20.4-ar = ''
+aarch64-apple-darwin20.4-strip = ''
+
+[required_packages]
+osxcross = ''

cross/darwin-x86_64.ini

@@ -0,0 +1,23 @@
+[binaries]
+c = 'x86_64-apple-darwin20.4-clang'
+cpp = 'x86_64-apple-darwin20.4-clang++'
+ar = 'x86_64-apple-darwin20.4-ar'
+strip = 'x86_64-apple-darwin20.4-strip'
+
+[host_machine]
+system = 'darwin'
+cpu_family = 'x86_64'
+cpu = 'x86_64'
+endian = 'little'
+
+[properties]
+needs_exe_wrapper = true
+
+[required_binaries]
+x86_64-apple-darwin20.4-clang = ''
+x86_64-apple-darwin20.4-clang++ = ''
+x86_64-apple-darwin20.4-ar = ''
+x86_64-apple-darwin20.4-strip = ''
+
+[required_packages]
+osxcross = ''

cross/linux-aarch32.ini

@@ -0,0 +1,26 @@
+[binaries]
+c = 'arm-linux-gnueabihf-gcc'
+cpp = 'arm-linux-gnueabihf-g++'
+ar = 'arm-linux-gnueabihf-ar'
+strip = 'arm-linux-gnueabihf-strip'
+pkg-config = 'arm-linux-gnueabihf-pkg-config'
+
+[host_machine]
+system = 'linux'
+cpu_family = 'arm'
+cpu = 'armv7'
+endian = 'little'
+
+[properties]
+needs_exe_wrapper = true
+
+[required_binaries]
+arm-linux-gnueabihf-gcc = ''
+arm-linux-gnueabihf-g++ = ''
+arm-linux-gnueabihf-ar = ''
+arm-linux-gnueabihf-strip = ''
+arm-linux-gnueabihf-pkg-config = ''
+
+[required_packages]
+g++-arm-linux-gnueabihf = ''
+binutils-arm-linux-gnueabihf = ''

cross/linux-aarch64.ini

@@ -0,0 +1,26 @@
+[binaries]
+c = 'aarch64-linux-gnu-gcc'
+cpp = 'aarch64-linux-gnu-g++'
+ar = 'aarch64-linux-gnu-ar'
+strip = 'aarch64-linux-gnu-strip'
+pkg-config = 'aarch64-linux-gnu-pkg-config'
+
+[host_machine]
+system = 'linux'
+cpu_family = 'aarch64'
+cpu = 'aarch64'
+endian = 'little'
+
+[properties]
+needs_exe_wrapper = true
+
+[required_binaries]
+aarch64-linux-gnu-gcc = ''
+aarch64-linux-gnu-g++ = ''
+aarch64-linux-gnu-ar = ''
+aarch64-linux-gnu-strip = ''
+aarch64-linux-gnu-pkg-config = ''
+
+[required_packages]
+g++-aarch64-linux-gnu = ''
+binutils-aarch64-linux-gnu = ''

cross/linux-x86.ini

@@ -0,0 +1,26 @@
+[binaries]
+c = 'i686-linux-gnu-gcc'
+cpp = 'i686-linux-gnu-g++'
+ar = 'i686-linux-gnu-ar'
+strip = 'i686-linux-gnu-strip'
+pkg-config = 'i686-linux-gnu-pkg-config'
+
+[host_machine]
+system = 'linux'
+cpu_family = 'x86'
+cpu = 'i686'
+endian = 'little'
+
+[properties]
+needs_exe_wrapper = true
+
+[required_binaries]
+i686-linux-gnu-gcc = ''
+i686-linux-gnu-g++ = ''
+i686-linux-gnu-ar = ''
+i686-linux-gnu-strip = ''
+i686-linux-gnu-pkg-config = ''
+
+[required_packages]
+g++-i686-linux-gnu = ''
+binutils-i686-linux-gnu = ''

cross/linux-x86_64.ini

@@ -0,0 +1,26 @@
+[binaries]
+c = 'x86_64-linux-gnu-gcc'
+cpp = 'x86_64-linux-gnu-g++'
+ar = 'x86_64-linux-gnu-ar'
+strip = 'x86_64-linux-gnu-strip'
+pkg-config = 'x86_64-linux-gnu-pkg-config'
+
+[host_machine]
+system = 'linux'
+cpu_family = 'x86_64'
+cpu = 'x86_64'
+endian = 'little'
+
+[properties]
+needs_exe_wrapper = true
+
+[required_binaries]
+x86_64-linux-gnu-gcc = ''
+x86_64-linux-gnu-g++ = ''
+x86_64-linux-gnu-ar = ''
+x86_64-linux-gnu-strip = ''
+x86_64-linux-gnu-pkg-config = ''
+
+[required_packages]
+g++-x86-64-linux-gnu = ''
+binutils-x86-64-linux-gnu = ''

cross/windows-aarch64.ini

@@ -0,0 +1,27 @@
+[binaries]
+c = 'aarch64-w64-mingw32-gcc'
+cpp = 'aarch64-w64-mingw32-g++'
+ar = 'aarch64-w64-mingw32-ar'
+strip = 'aarch64-w64-mingw32-strip'
+pkg-config = 'aarch64-w64-mingw32-pkg-config'
+windres = 'aarch64-w64-mingw32-windres'
+
+[host_machine]
+system = 'windows'
+cpu_family = 'aarch64'
+cpu = 'aarch64'
+endian = 'little'
+
+[properties]
+needs_exe_wrapper = true
+
+[required_binaries]
+aarch64-w64-mingw32-gcc = ''
+aarch64-w64-mingw32-g++ = ''
+aarch64-w64-mingw32-ar = ''
+aarch64-w64-mingw32-strip = ''
+aarch64-w64-mingw32-pkg-config = ''
+aarch64-w64-mingw32-windres = ''
+
+[required_packages]
+mingw-w64-aarch64-dev = ''

cross/windows-x86.ini

@@ -0,0 +1,27 @@
+[binaries]
+c = 'i686-w64-mingw32-gcc'
+cpp = 'i686-w64-mingw32-g++'
+ar = 'i686-w64-mingw32-ar'
+strip = 'i686-w64-mingw32-strip'
+pkg-config = 'i686-w64-mingw32-pkg-config'
+windres = 'i686-w64-mingw32-windres'
+
+[host_machine]
+system = 'windows'
+cpu_family = 'x86'
+cpu = 'i686'
+endian = 'little'
+
+[properties]
+needs_exe_wrapper = true
+
+[required_binaries]
+i686-w64-mingw32-gcc = ''
+i686-w64-mingw32-g++ = ''
+i686-w64-mingw32-ar = ''
+i686-w64-mingw32-strip = ''
+i686-w64-mingw32-pkg-config = ''
+i686-w64-mingw32-windres = ''
+
+[required_packages]
+mingw-w64-i686-dev = ''

cross/windows-x86_64.ini

@@ -0,0 +1,27 @@
+[binaries]
+c = 'x86_64-w64-mingw32-gcc'
+cpp = 'x86_64-w64-mingw32-g++'
+ar = 'x86_64-w64-mingw32-ar'
+strip = 'x86_64-w64-mingw32-strip'
+pkg-config = 'x86_64-w64-mingw32-pkg-config'
+windres = 'x86_64-w64-mingw32-windres'
+
+[host_machine]
+system = 'windows'
+cpu_family = 'x86_64'
+cpu = 'x86_64'
+endian = 'little'
+
+[properties]
+needs_exe_wrapper = true
+
+[required_binaries]
+x86_64-w64-mingw32-gcc = ''
+x86_64-w64-mingw32-g++ = ''
+x86_64-w64-mingw32-ar = ''
+x86_64-w64-mingw32-strip = ''
+x86_64-w64-mingw32-pkg-config = ''
+x86_64-w64-mingw32-windres = ''
+
+[required_packages]
+mingw-w64-x86-64-dev = ''

mesonbuild/cmdline.py

@@ -35,6 +35,8 @@ class SharedCMDOptions(Protocol):
         d_keys: T.Set[OptionKey]
         cross_file: T.List[str]
         native_file: T.List[str]
+        cross_os: T.Optional[str]
+        cross_arch: T.Optional[str]
 
 
 class CmdLineFileParser(configparser.ConfigParser):
@@ -77,16 +79,24 @@ def read_cmd_line_file(build_dir: str, options: SharedCMDOptions) -> None:
         # This will be a string in the form: "['first', 'second', ...]", use
         # literal_eval to get it into the list of strings.
         options.native_file = ast.literal_eval(properties.get('native_file', '[]'))
+    if options.cross_os is None:
+        options.cross_os = properties.get('cross_os')
+    if options.cross_arch is None:
+        options.cross_arch = properties.get('cross_arch')
 
 def write_cmd_line_file(build_dir: str, options: SharedCMDOptions) -> None:
     filename = get_cmd_line_file(build_dir)
     config = CmdLineFileParser()
 
-    properties: T.Dict[str, T.List[str]] = {}
+    properties: T.Dict[str, T.Union[str, T.List[str]]] = {}
     if options.cross_file:
         properties['cross_file'] = options.cross_file
     if options.native_file:
         properties['native_file'] = options.native_file
+    if options.cross_os:
+        properties['cross_os'] = options.cross_os
+    if options.cross_arch:
+        properties['cross_arch'] = options.cross_arch
 
     config['options'] = {str(k): str(v) for k, v in options.cmd_line_options.items()}
     config['properties'] = {k: repr(v) for k, v in properties.items()}
@@ -118,6 +128,10 @@ def format_cmd_line_options(options: SharedCMDOptions) -> str:
         cmdline += [f'--cross-file={f}' for f in options.cross_file]
     if options.native_file:
         cmdline += [f'--native-file={f}' for f in options.native_file]
+    if options.cross_os:
+        cmdline += [f'--cross-os={options.cross_os}']
+    if options.cross_arch:
+        cmdline += [f'--cross-arch={options.cross_arch}']
     return ' '.join([shlex.quote(x) for x in cmdline])
 
 

mesonbuild/cross/__init__.py

@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: Apache-2.0
+# Copyright 2025 The Meson development team
+
+from .registry import CrossConfigRegistry, CrossConfigNotFoundError
+from .checker import DependencyChecker, DependencyCheckResult
+
+__all__ = [
+    'CrossConfigRegistry',
+    'CrossConfigNotFoundError',
+    'DependencyChecker',
+    'DependencyCheckResult',
+]