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Merge pull request #83809 from finagolfin/cross-tools

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[6.2.1][build] Make it possible to build a cross-compilation toolchain for Android, including Testing
This commit is contained in:
Mishal Shah
2025-09-18 09:10:48 -07:00
committed by GitHub
parent 1a09c139fa bfac55b009
commit c110c9570f
14 changed files with 125 additions and 33 deletions
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2
stdlib/cmake/modules/AddSwiftStdlib.cmake
View File

@@ -2504,6 +2504,8 @@ function(add_swift_target_library name)
list(APPEND swiftlib_link_flags_all "-shared")
# TODO: Instead of `lib${name}.so` find variable or target property which already have this value.
list(APPEND swiftlib_link_flags_all "-Wl,-soname,lib${name}.so")
# Ensure compatibility with Android 15+ devices using 16KB memory pages.
list(APPEND swiftlib_link_flags_all "-Wl,-z,max-page-size=16384")
endif()
if (SWIFTLIB_BACK_DEPLOYMENT_LIBRARY)

1
test/SILOptimizer/concat_string_literals.32.swift
View File

@@ -4,6 +4,7 @@
// We have a separate test for 64-bit architectures.
// REQUIRES: PTRSIZE=32
// XFAIL: OS=linux-androideabi
// NOTE: 25185.byteSwapped = 0x62 'a', 0x61 'b'
// CHECK-LABEL: test_ascii_scalar_scalar2

4
utils/build-script-impl
View File

@@ -2351,7 +2351,7 @@ for host in "${ALL_HOSTS[@]}"; do
continue
fi
if [[ "${CROSS_COMPILE_BUILD_SWIFT_TOOLS}" == "0" ]]; then
if [[ "$(true_false ${CROSS_COMPILE_BUILD_SWIFT_TOOLS})" == "FALSE" ]]; then
echo "Skipping building Foundation Macros for ${host}, because the host tools are not being built"
continue
fi
@@ -2940,7 +2940,7 @@ for host in "${ALL_HOSTS[@]}"; do
continue
fi
if [[ "${CROSS_COMPILE_BUILD_SWIFT_TOOLS}" == "0" && "${product}" == "foundation_macros" ]]; then
if [[ "$(true_false ${CROSS_COMPILE_BUILD_SWIFT_TOOLS})" == "FALSE" && "${product}" == "foundation_macros" ]]; then
echo "Skipping installing Foundation Macros for ${host}, because the host tools are not being built"
continue
fi

6
utils/build_swift/build_swift/driver_arguments.py
View File

@@ -677,6 +677,12 @@ def create_argument_parser():
"for each cross-compiled toolchain's destdir, useful when building "
"multiple toolchains and can be disabled if only cross-compiling one.")
option('--cross-compile-build-swift-tools', toggle_true,
default=True,
help="Cross-compile the Swift compiler, other host tools from the "
"compiler repository, and various macros for each listed "
"--cross-compile-hosts platform.")
option('--stdlib-deployment-targets', store,
type=argparse.ShellSplitType(),
default=None,

2
utils/build_swift/tests/expected_options.py
View File

@@ -155,6 +155,7 @@ EXPECTED_DEFAULTS = {
'compiler_vendor': defaults.COMPILER_VENDOR,
'coverage_db': None,
'cross_compile_append_host_target_to_destdir': True,
'cross_compile_build_swift_tools': True,
'cross_compile_deps_path': None,
'cross_compile_hosts': [],
'infer_cross_compile_hosts_on_darwin': False,
@@ -622,6 +623,7 @@ EXPECTED_OPTIONS = [
EnableOption('--build-swift-clang-overlays'),
EnableOption('--build-swift-remote-mirror'),
EnableOption('--cross-compile-append-host-target-to-destdir'),
EnableOption('--cross-compile-build-swift-tools'),
EnableOption('--color-in-tests'),
EnableOption('--distcc'),
EnableOption('--sccache'),

2
utils/swift_build_support/swift_build_support/build_script_invocation.py
View File

@@ -119,6 +119,8 @@ class BuildScriptInvocation(object):
"--cmake-generator", args.cmake_generator,
"--cross-compile-append-host-target-to-destdir", str(
args.cross_compile_append_host_target_to_destdir).lower(),
"--cross-compile-build-swift-tools", str(
args.cross_compile_build_swift_tools).lower(),
"--build-jobs", str(args.build_jobs),
"--lit-jobs", str(args.lit_jobs),
"--common-cmake-options=%s" % ' '.join(

6
utils/swift_build_support/swift_build_support/products/cmake_product.py
View File

@@ -24,7 +24,7 @@ class CMakeProduct(product.Product):
return self.args.verbose_build
def build_with_cmake(self, build_targets, build_type, build_args,
prefer_native_toolchain=False):
prefer_native_toolchain=False, build_llvm=True):
assert self.toolchain.cmake is not None
cmake_build = []
_cmake = cmake.CMake(self.args, self.toolchain,
@@ -71,9 +71,7 @@ class CMakeProduct(product.Product):
env=env)
is_llvm = self.product_name() == "llvm"
if (not is_llvm and not self.args.skip_build) or (
is_llvm and self.args._build_llvm
):
if (not is_llvm and not self.args.skip_build) or (is_llvm and build_llvm):
cmake_opts = [self.build_dir, "--config", build_type]
shell.call(

12
utils/swift_build_support/swift_build_support/products/llvm.py
View File

@@ -249,10 +249,13 @@ class LLVM(cmake_product.CMakeProduct):
# space/time efficient than -g on that platform.
llvm_cmake_options.define('LLVM_USE_SPLIT_DWARF:BOOL', 'YES')
if not self.args._build_llvm:
build = True
if not self.args._build_llvm or (not self.args.cross_compile_build_swift_tools
and self.is_cross_compile_target(host_target)):
# Indicating we don't want to build LLVM at all should
# override everything.
build_targets = []
build = False
elif self.args.skip_build or not self.args.build_llvm:
# We can't skip the build completely because the standalone
# build of Swift depends on these.
@@ -399,7 +402,8 @@ class LLVM(cmake_product.CMakeProduct):
self._handle_cxx_headers(host_target, platform)
self.build_with_cmake(build_targets, self.args.llvm_build_variant, [])
self.build_with_cmake(build_targets, self.args.llvm_build_variant, [],
build_llvm=build)
# copy over the compiler-rt builtins for iOS/tvOS/watchOS to ensure
# that Swift's stdlib can use compiler-rt builtins when targeting
@@ -484,7 +488,9 @@ class LLVM(cmake_product.CMakeProduct):
Whether or not this product should be installed with the given
arguments.
"""
return self.args.install_llvm
return self.args.install_llvm and (
self.args.cross_compile_build_swift_tools or
not self.is_cross_compile_target(host_target))
def install(self, host_target):
"""

42
utils/swift_build_support/swift_build_support/products/product.py
View File

@@ -389,7 +389,7 @@ class Product(object):
sysroot_arch, vendor, abi = self.get_linux_target_components(arch)
return '{}-{}-linux-{}'.format(sysroot_arch, vendor, abi)
def generate_linux_toolchain_file(self, platform, arch):
def generate_linux_toolchain_file(self, platform, arch, crosscompiling=True):
"""
Generates a new CMake tolchain file that specifies Linux as a target
platform.
@@ -402,18 +402,34 @@ class Product(object):
toolchain_args = {}
if crosscompiling:
if platform == "linux":
toolchain_args['CMAKE_SYSTEM_NAME'] = 'Linux'
toolchain_args['CMAKE_SYSTEM_PROCESSOR'] = arch
elif platform == "android":
toolchain_args['CMAKE_SYSTEM_NAME'] = 'Android'
toolchain_args['CMAKE_SYSTEM_VERSION'] = self.args.android_api_level
toolchain_args['CMAKE_SYSTEM_PROCESSOR'] = arch if not arch == 'armv7' \
else 'armv7-a'
toolchain_args['CMAKE_ANDROID_NDK'] = self.args.android_ndk
toolchain_args['CMAKE_FIND_ROOT_PATH'] = self.args.cross_compile_deps_path
# This is a workaround for a CMake 3.30+ bug,
# https://gitlab.kitware.com/cmake/cmake/-/issues/26154, and can
# be removed once that is fixed.
toolchain_args['CMAKE_SHARED_LINKER_FLAGS'] = '\"\"'
# We only set the actual sysroot if we are actually cross
# compiling. This is important since otherwise cmake seems to change the
# RUNPATH to be a relative rather than an absolute path, breaking
# certain cmark tests (and maybe others).
if platform == "linux":
maybe_sysroot = self.get_linux_sysroot(platform, arch)
if maybe_sysroot is not None:
toolchain_args['CMAKE_SYSROOT'] = maybe_sysroot
target = self.get_linux_target(platform, arch)
elif platform == "android":
target = '%s-unknown-linux-android%s' % (arch, self.args.android_api_level)
if self.toolchain.cc.endswith('clang'):
toolchain_args['CMAKE_C_COMPILER_TARGET'] = target
if self.toolchain.cxx.endswith('clang++'):
@@ -459,10 +475,30 @@ class Product(object):
platform, arch,
macos_deployment_version=override_macos_deployment_version)
self.cmake_options.define('CMAKE_TOOLCHAIN_FILE:PATH', toolchain_file)
elif platform == "linux":
toolchain_file = self.generate_linux_toolchain_file(platform, arch)
elif platform == "linux" or platform == "android":
# Always cross-compile for linux, but not on Android, as a native
# compile on Android does not use the NDK and its CMake config.
cross_compile = platform == "linux" or \
self.is_cross_compile_target(host_target)
toolchain_file = self.generate_linux_toolchain_file(platform, arch,
cross_compile)
self.cmake_options.define('CMAKE_TOOLCHAIN_FILE:PATH', toolchain_file)
if cross_compile and platform == "android":
resource_dir = None
# build-script-impl products build before the install and use
# the Swift stdlib from the compiler build directory instead,
# while products built even before that currently do not support
# cross-compiling Swift.
if not self.is_before_build_script_impl_product() and \
not self.is_build_script_impl_product():
install_path = self.host_install_destdir(host_target) + \
self.args.install_prefix
resource_dir = '%s/lib/swift' % install_path
flags = targets.StdlibDeploymentTarget.get_target_for_name(
host_target).platform.swift_flags(self.args, resource_dir)
self.cmake_options.define('CMAKE_Swift_FLAGS', flags)
return toolchain_file
def get_openbsd_toolchain_file(self):

8
utils/swift_build_support/swift_build_support/products/swift_testing.py
View File

@@ -127,3 +127,11 @@ class SwiftTestingCMakeShim(cmake_product.CMakeProduct):
install_prefix = install_destdir + self.args.install_prefix
self.install_with_cmake(['install'], install_prefix)
@classmethod
def is_build_script_impl_product(cls):
return False
@classmethod
def is_before_build_script_impl_product(cls):
return False

23
utils/swift_build_support/swift_build_support/products/swift_testing_macros.py
View File

@@ -42,13 +42,24 @@ class SwiftTestingMacros(product.Product):
return True
def should_build(self, host_target):
return True
build_macros = not self.is_cross_compile_target(host_target) or \
self.args.cross_compile_build_swift_tools
if not build_macros:
print("Skipping building Testing Macros for %s, because the host tools "
"are not being built" % host_target)
return build_macros
def should_test(self, host_target):
return False
def should_install(self, host_target):
return self.args.install_swift_testing_macros
install_macros = self.args.install_swift_testing_macros and \
(not self.is_cross_compile_target(host_target) or
self.args.cross_compile_build_swift_tools)
if self.args.install_swift_testing_macros and not install_macros:
print("Skipping installing Testing Macros for %s, because the host tools "
"are not being built" % host_target)
return install_macros
def _cmake_product(self, host_target):
build_root = os.path.dirname(self.build_dir)
@@ -121,3 +132,11 @@ class SwiftTestingMacrosCMakeShim(cmake_product.CMakeProduct):
install_prefix = install_destdir + self.args.install_prefix
self.install_with_cmake(['install'], install_prefix)
@classmethod
def is_build_script_impl_product(cls):
return False
@classmethod
def is_before_build_script_impl_product(cls):
return False

10
utils/swift_build_support/swift_build_support/targets.py
View File

@@ -72,7 +72,7 @@ class Platform(object):
return True
return False
def swift_flags(self, args):
def swift_flags(self, args, resource_path=None):
"""
Swift compiler flags for a platform, useful for cross-compiling
"""
@@ -154,17 +154,21 @@ class AndroidPlatform(Platform):
"""
return True
def swift_flags(self, args):
def swift_flags(self, args, resource_path=None):
flags = '-target %s-unknown-linux-android%s ' % (args.android_arch,
args.android_api_level)
if resource_path is not None:
flags += '-resource-dir %s ' % (resource_path)
else:
flags += '-resource-dir %s/swift-%s-%s/lib/swift ' % (
args.build_root, self.name, args.android_arch)
android_toolchain_path = self.ndk_toolchain_path(args)
flags += '-sdk %s/sysroot ' % (android_toolchain_path)
flags += '-tools-directory %s/bin' % (android_toolchain_path)
flags += '-tools-directory %s/bin ' % (android_toolchain_path)
flags += '-Xclang-linker -Wl,-z,max-page-size=16384'
return flags
def cmake_options(self, args):

18
validation-test/BuildSystem/android_cross_compile.test
View File

@@ -1,11 +1,15 @@
# REQUIRES: standalone_build
# UNSUPPORTED: OS=macosx
# UNSUPPORTED: OS=ios
# UNSUPPORTED: OS=tvos
# UNSUPPORTED: OS=watchos
# RUN: %empty-directory(%t)
# RUN: SKIP_XCODE_VERSION_CHECK=1 SWIFT_BUILD_ROOT=%t %swift_src_root/utils/build-script --dry-run --cmake %cmake --libdispatch --cross-compile-hosts=android-aarch64 --skip-local-build --android --android-ndk %t/ndk/ --android-arch aarch64 2>&1 | %FileCheck %s
# RUN: SKIP_XCODE_VERSION_CHECK=1 SWIFT_BUILD_ROOT=%t %swift_src_root/utils/build-script --dry-run --cmake %cmake --foundation --swift-testing --swift-testing-macros --install-foundation --install-swift-testing-macros --install-llvm --cross-compile-hosts=android-aarch64 --cross-compile-build-swift-tools=False --android --android-ndk %t/ndk/ --android-arch aarch64 2>&1 | %FileCheck %s
# CHECK: -DCMAKE_Swift_FLAGS{{.*}}-target {{.*}}unknown-linux-android{{.*}} -sdk
# CHECK: -DCMAKE_SYSTEM_NAME=Android {{.*}} -DCMAKE_ANDROID_NDK
# CHECK: pushd {{.*}}/llvm-android-aarch64
# CHECK-NOT: cmake --build {{.*}}/llvm-android-aarch64 --config
# CHECK-NOT: cmake --build {{.*}}/llvm-android-aarch64 {{.*}} install-llvm
# CHECK: cmake {{.*}}-DSWIFT_INCLUDE_TOOLS:BOOL=FALSE{{.*}}/swift
# CHECK: Skipping building Foundation Macros for android-aarch64, because the host tools are not being built
# CHECK: Skipping installing Foundation Macros for android-aarch64, because the host tools are not being built
# CHECK: Skipping building Testing Macros for android-aarch64, because the host tools are not being built
# CHECK: Skipping installing Testing Macros for android-aarch64, because the host tools are not being built
# CHECK: cmake {{.*}}-DCMAKE_TOOLCHAIN_FILE:PATH={{.*}}swifttesting-android-aarch64/BuildScriptToolchain.cmake
# CHECK: -DCMAKE_Swift_FLAGS=-target aarch64-unknown-linux-android{{.*}} -sdk

6
validation-test/BuildSystem/cmark_crosscompile_using_toolchain_always.test
View File

@@ -1,9 +1,13 @@
# REQUIRES: standalone_build
# REQUIRES: OS=macosx
# RUN: %empty-directory(%t)
# RUN: mkdir -p %t
# RUN: SKIP_XCODE_VERSION_CHECK=1 SWIFT_BUILD_ROOT=%t %swift_src_root/utils/build-script --dry-run --install-all --cmake %cmake --skip-build-llvm --skip-build-swift 2>&1 | %FileCheck %s
# RUN: SKIP_XCODE_VERSION_CHECK=1 SWIFT_BUILD_ROOT=%t %swift_src_root/utils/build-script --dry-run --install-all --cmake %cmake --skip-build-llvm --skip-build-swift --cross-compile-hosts=android-aarch64 --skip-local-build --android --android-ndk %t/ndk/ 2>&1 | %FileCheck --check-prefix=ANDROID %s
# CHECK: DRY_RUN! Writing Toolchain file to path:{{.*}}BuildScriptToolchain.cmake
# CHECK: cmake {{.*}}-DCMAKE_TOOLCHAIN_FILE:PATH={{.*}}BuildScriptToolchain.cmake {{.*}}cmark
# ANDROID: DRY_RUN! Writing Toolchain file to path:{{.*}}cmark-android-aarch64/BuildScriptToolchain.cmake
# ANDROID: cmake {{.*}}-DCMAKE_TOOLCHAIN_FILE:PATH={{.*}}cmark-android-aarch64/BuildScriptToolchain.cmake
# ANDROID: -DCMAKE_Swift_FLAGS=-target aarch64-unknown-linux-android