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build-script-impl
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#!/usr/bin/env bash
#===--- build-script-impl - Implementation details of build-script ---------===#
#
## This source file is part of the Swift.org open source project
##
## Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
## Licensed under Apache License v2.0 with Runtime Library Exception
##
## See https://swift.org/LICENSE.txt for license information
## See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
#
#===------------------------------------------------------------------------===#
#
# This script is an implementation detail of other build scripts and should not
# be called directly.
#
# Note: This script will NOT auto-clean before building.
#
set -o pipefail
set -e
umask 0022
# Declare the set of known settings along with each one's description
#
# If you add a user-settable variable, add it to this list.
#
# A default value of "" indicates that the corresponding variable
# will remain unset unless set explicitly.
#
# The --skip-build parameter, with no product name, does not affect the
# configuration (CMake parameters). You can turn this option on and
# off in different invocations of the script for the same build
# directory without affecting configuration.
#
# skip-build-* and build-* parameters affect the CMake configuration
# (enable/disable those components).
#
# Each variable name is re-exported into this script in uppercase, where dashes
# are substituted by underscores. For example, `swift-install-components` is
# referred to as `SWIFT_INSTALL_COMPONENTS` in the remainder of this script.
# name default description
KNOWN_SETTINGS=(
## Debugging Options
dry-run "" "print the commands that would be executed, but do not execute them"
verbose-build "" "print the commands executed during the build"
check-args-only "" "set to check all arguments are known. Exit with status 0 if success, non zero otherwise"
only-execute "all" "Only execute the named action (see implementation)"
check-incremental-compilation "0" "set to 1 to compile swift libraries multiple times to check if incremental compilation works"
enable-array-cow-checks "0" "set tp 1 compile the stdlib with Array COW checks enabled (only relevant for assert builds)"
## Build Mode Options
enable-asan "" "enable Address Sanitizer"
enable-ubsan "" "enable Undefined Behavior Sanitizer"
clang-profile-instr-use "" "If set, profile file to use for clang PGO while building llvm/clang"
swift-profile-instr-use "" "If set, profile file to use for clang PGO while building swift"
## Build Tool Settings
build-args "" "arguments to the build tool; defaults to -j8 when CMake generator is \"Unix Makefiles\""
build-dir "" "out-of-tree build directory; default is in-tree. **This argument is required**"
build-jobs "" "The number of parallel build jobs to use"
lit-jobs "" "The number of workers to use when testing with lit"
build-runtime-with-host-compiler "" "use the host c++ compiler to build everything"
build-stdlib-deployment-targets "all" "space-separated list that filters which of the configured targets to build the Swift standard library for, or 'all'"
build-toolchain-only "" "If set, only build the necessary tools to build an external toolchain"
bootstrapping "" "the bootstrapping build mode for the swift compiler modules"
cmake-generator "Unix Makefiles" "kind of build system to generate; see output of 'cmake --help' for choices"
llvm-num-parallel-lto-link-jobs "" "The number of parallel link jobs to use when compiling llvm"
reconfigure "" "force a CMake configuration run even if CMakeCache.txt already exists"
skip-reconfigure "" "set to skip reconfigure"
swift-tools-num-parallel-lto-link-jobs "" "The number of parallel link jobs to use when compiling swift tools"
use-gold-linker "" "Enable using the gold linker"
workspace "${HOME}/src" "source directory containing llvm, clang, swift"
dsymutil-jobs "1" "number of parallel invocations of dsymutil"
extra-dsymutil-args "" "additional arguments to pass to dsymutil"
## Build Tools
host-cc "" "the path to CC, the 'clang' compiler for the host platform. **This argument is required**"
host-cxx "" "the path to CXX, the 'clang++' compiler for the host platform. **This argument is required**"
host-libtool "" "the path to libtool"
host-lipo "" "the path to lipo for creating universal binaries on Darwin"
cmake "" "path to the cmake binary"
distcc "" "use distcc in pump mode"
distcc-pump "" "the path to distcc pump executable. This argument is required if distcc is set."
ninja-bin "" "the path to Ninja tool"
## Android Options
android-api-level "" "The Android API level to target when building for Android. Currently only 21 or above is supported"
android-arch "armv7" "The Android target architecture when building for Android"
android-deploy-device-path "" "Path on an Android device to which built Swift stdlib products will be deployed"
android-ndk "" "An absolute path to the NDK that will be used as a libc implementation for Android builds"
## Linux Options
musl-path "/usr/local/musl" "The path to the Musl headers and libraries"
linux-archs "" "The Linux target architecture(s)"
linux-static-archs "" "The fully static Linux target architecture(s)"
build-linux-static "" "set to build Swift stdlibs for statically linked Linux"
## Darwin Options
darwin-crash-reporter-client "" "whether to enable CrashReporter integration, default is 1 on Darwin platforms, 0 otherwise"
darwin-deployment-version-ios "16.0" "minimum deployment target version for iOS"
darwin-deployment-version-osx "13.0" "minimum deployment target version for OS X"
darwin-deployment-version-tvos "16.0" "minimum deployment target version for tvOS"
darwin-deployment-version-watchos "6.0" "minimum deployment target version for watchOS"
darwin-deployment-version-xros "1.0" "minimum deployment target version for xrOS"
darwin-install-extract-symbols "" "whether to extract symbols with dsymutil during installations"
darwin-install-extract-symbols-use-just-built-dsymutil "1" "whether we should extract symbols using the just built dsymutil"
darwin-symroot-path-filters "" "space-separated list of path patterns to consider for symbol generation"
darwin-overlay-target "" "single overlay target to build, dependencies are computed later"
darwin-sdk-deployment-targets "xctest-ios-8.0" "semicolon-separated list of triples like 'fookit-ios-9.0;barkit-watchos-9.0'"
darwin-stdlib-install-name-dir "" "the directory of the install_name for standard library dylibs"
darwin-toolchain-alias "" "Swift alias for toolchain"
darwin-toolchain-application-cert "" "Application Cert name to codesign xctoolchain"
darwin-toolchain-bundle-identifier "" "CFBundleIdentifier for xctoolchain info plist"
darwin-toolchain-display-name "" "Display Name for xctoolcain info plist"
darwin-toolchain-display-name-short "" "Display Name with out date for xctoolchain info plist"
darwin-toolchain-installer-cert "" "Installer Cert name to create installer pkg"
darwin-toolchain-installer-package "" "The path to installer pkg"
darwin-toolchain-name "" "Directory name for xctoolchain"
darwin-toolchain-version "" "Version for xctoolchain info plist and installer pkg"
darwin-toolchain-require-use-os-runtime "0" "When setting up a plist for a toolchain, require the users of the toolchain to link against the OS instead of the packaged toolchain runtime. 0 for false, 1 for true"
darwin-xcrun-toolchain "default" "the name of the toolchain to use on Darwin"
## Runtime options
min-runtime-version "" "Used to specify the minimum host runtime version when building the compiler on non-Darwin platforms"
## WebAssembly/WASI Options
wasi-sysroot "" "An absolute path to the wasi-sysroot that will be used as a libc implementation for Wasm builds"
## Build Types for Components
swift-stdlib-build-type "Debug" "the CMake build variant for Swift"
## Skip Build ...
skip-build "" "set to configure as usual while skipping the build step"
skip-build-android "" "set to skip building Swift stdlibs for Android"
skip-build-linux "" "set to skip building Swift stdlibs for Linux"
skip-build-wasm "" "set to skip building Swift stdlibs for WebAssembly"
skip-build-benchmarks "" "set to skip building Swift Benchmark Suite"
skip-build-clang-tools-extra "" "set to skip building clang-tools-extra as part of llvm"
skip-build-compiler-rt "" "set to skip building Compiler-RT"
skip-build-lld "" "set to skip building lld as part of llvm (linux only)"
## Skip Test ...
skip-test-benchmarks "" "set to skip running Swift Benchmark Suite"
skip-test-sourcekit "" "set to skip testing SourceKit"
## Extra ... CMake Options
common-cmake-options "" "CMake options used for all targets, including LLVM/Clang"
extra-cmake-options "" "Extra options to pass to CMake for all targets"
ninja-cmake-options "" "CMake options used for all ninja targets"
## Build ...
build-llvm "1" "set to 1 to build LLVM and Clang"
build-sil-debugging-stdlib "0" "set to 1 to build the Swift standard library with -sil-based-debuginfo to enable debugging and profiling on SIL level"
build-swift-clang-overlays "1" "set to 1 to build the Swift overlays for the clang builtin modules"
build-swift-dynamic-sdk-overlay "" "set to 1 to build dynamic variants of the Swift SDK overlay"
build-swift-dynamic-stdlib "" "set to 1 to build dynamic variants of the Swift standard library"
build-swift-examples "1" "set to 1 to build examples"
build-swift-remote-mirror "1" "set to 1 to build the Swift Remote Mirror library"
build-swift-static-sdk-overlay "" "set to 1 to build static variants of the Swift SDK overlay"
build-swift-static-stdlib "" "set to 1 to build static variants of the Swift standard library"
build-swift-stdlib-unittest-extra "0" "set to 1 to build optional StdlibUnittest components"
build-swift-tools "1" "set to 1 to build Swift host tools"
build-swift-libexec "1" "set to 1 to build auxiliary executables"
## Skip cleaning build directories ...
skip-clean-libdispatch "0" "skip cleaning the libdispatch build"
skip-clean-foundation "0" "skip cleaning the foundation build"
skip-clean-xctest "0" "skip cleaning the xctest build"
## Test Options
llvm-include-tests "1" "Set to true to generate testing targets for LLVM. Set to true by default."
long-test "0" "set to run the long test suite"
only-executable-test "" "only run the executable variant of the swift lit tests"
stress-test "0" "set to run the stress test suite"
stress-test-sourcekit "" "set to run the stress-SourceKit target"
swift-include-tests "1" "Set to true to generate testing targets for Swift. This allows the build to proceed when 'test' directory is missing (required for B&I builds)"
validation-test "0" "set to run the validation test suite"
## llbuild Options
llbuild-enable-assertions "1" "enable assertions in llbuild"
skip-clean-llbuild "0" "skip cleaning up llbuild"
## LLDB Options
lldb-assertions "1" "build lldb with assertions enabled"
lldb-extra-cmake-args "" "extra command line args to pass to lldb cmake"
lldb-test-cc "" "CC to use for building LLDB testsuite test inferiors. Defaults to just-built, in-tree clang. If set to 'host-toolchain', sets it to same as host-cc."
lldb-test-swift-compatibility "" "specify additional Swift compilers to test lldb with"
lldb-test-swift-only "0" "when running lldb tests, only include Swift-specific tests"
lldb-use-system-debugserver "" "don't try to codesign debugserver, and use the system's debugserver instead"
lldb-configure-tests "1" "if set, will make sure we configure LLDB's test target without running the tests"
## LLVM Options
llvm-enable-lto "" "Must be set to one of 'thin' or 'full'"
llvm-enable-modules "0" "enable building llvm using modules"
llvm-install-components "" "a semicolon-separated list of LLVM components to install"
llvm-lit-args "" "If set, override the lit args passed to LLVM"
enable-llvm-assertions "1" "set to enable llvm assertions"
llvm-ninja-targets "" "list of ninja targets to build for LLVM"
llvm-ninja-targets-for-cross-compile-hosts "" "list of ninja targets to build for LLVM for hosts that are cross-compiled"
## Swift Options
swift-analyze-code-coverage "not-merged" "Code coverage analysis mode for Swift (false, not-merged, merged). Defaults to false if the argument is not present, and not-merged if the argument is present without a modifier."
swift-enable-assertions "1" "enable assertions in Swift"
swift-enable-ast-verifier "1" "If enabled, and the assertions are enabled, the built Swift compiler will run the AST verifier every time it is invoked"
swift-install-components "" "a semicolon-separated list of Swift components to install"
swift-primary-variant-arch "" "default arch for target binaries"
swift-primary-variant-sdk "" "default SDK for target binaries"
swift-runtime-enable-leak-checker "0" "Enable leaks checking routines in the runtime"
swift-stdlib-enable-assertions "1" "enable assertions in Swift"
swift-stdlib-enable-debug-preconditions-in-release "0" "Enable _debugPrecondition checks in the stdlib in Release configurations"
swift-tools-enable-lto "" "enable LTO compilation of Swift tools. *NOTE* This does not include the swift standard library and runtime. Must be set to one of 'thin' or 'full'"
extra-swift-args "" "Extra arguments to pass to swift modules which match regex. Assumed to be a flattened cmake list consisting of [module_regexp, args, module_regexp, args, ...]"
report-statistics "0" "set to 1 to generate compilation statistics files for swift libraries"
sil-verify-all "0" "If enabled, run the SIL verifier after each transform when building Swift files during this build process"
sil-verify-all-macos-only "0" "If enabled, run the SIL verifier after each transform when building Swift files during this build process when building a macos stdlib"
stdlib-deployment-targets "" "space-separated list of targets to configure the Swift standard library to be compiled or cross-compiled for"
swift-objc-interop "" "whether to enable interoperability with Objective-C, default is 1 on Darwin platforms, 0 otherwise"
swift-enable-dispatch "1" "whether to enable use of libdispatch"
swift-implicit-concurrency-import "1" "whether to implicitly import the Swift concurrency module"
swift-stdlib-support-back-deployment "1" "whether to support back-deployment of built binaries to older OS versions"
swift-enable-reflection "1" "whether to support reflection and mirrors"
swift-stdlib-reflection-metadata "enabled" "whether to build stdlib with runtime metadata (valid options are 'enabled', 'disabled' and 'debugger-only')"
swift-stdlib-has-dladdr "1" "whether to build stdlib assuming the runtime environment provides dladdr API"
swift-stdlib-has-dlsym "1" "whether to build stdlib assuming the runtime environment provides the dlsym API"
swift-stdlib-has-filesystem "1" "whether to build stdlib assuming the runtime environment provides a filesystem"
swift-stdlib-supports-backtrace-reporting "" "whether to build stdlib assuming the runtime environment provides the backtrace(3) API, if not set defaults to true on all platforms except for Cygwin, Haiku and wasm"
swift-runtime-static-image-inspection "0" "whether to build stdlib assuming the runtime environment only supports a single runtime image with Swift code"
swift-threading-package "" "override the threading package for the host build; this is either a single package or a semicolon-separated list of sdk:package pairs. Valid packages are empty string (no override), 'pthreads', 'darwin', 'linux', 'win32', 'c11', 'none'"
swift-stdlib-single-threaded-concurrency "0" "build Swift concurrency in single-threaded mode"
swift-stdlib-task-to-thread-model-concurrency "0" "build Swift concurrency with task-to-thread mode"
swift-stdlib-tracing "" "whether to enable tracing signposts for the stdlib; default is 1 on Darwin platforms, 0 otherwise"
swift-stdlib-concurrency-tracing "" "whether to enable tracing signposts for concurrency; default is 1 on Darwin platforms, 0 otherwise"
swift-stdlib-use-relative-protocol-witness-tables "0" "whether to use relative protocol witness table"
swift-stdlib-use-fragile-resilient-protocol-witness-tables "0" "whether to use fragile resilient protocol witness table"
swift-enable-runtime-function-counters "" "whether to enable runtime function counters"
swift-stdlib-os-versioning "1" "whether to build stdlib with availability based on OS versions (Darwin only)"
swift-stdlib-has-commandline "1" "whether to build stdlib with the CommandLine enum and support for argv/argc"
swift-stdlib-stable-abi "" "should stdlib be built with stable ABI, if not set defaults to true on Darwin, false otherwise"
swift-stdlib-has-darwin-libmalloc "1" "whether the Darwin build of stdlib can use extended libmalloc APIs"
swift-stdlib-has-asl "" "whether the stdlib can use the asl_log API, defaults to true on Darwin, false otherwise"
swift-stdlib-has-stdin "1" "whether to build stdlib assuming the platform supports stdin and getline API"
swift-stdlib-has-environ "1" "whether to build stdlib assuming the platform supports environment variables"
swift-stdlib-has-locale "" "whether to build stdlib assuming the platform has locale support"
swift-stdlib-lto "" "enable LLVM LTO on the stdlib, valid values are empty string (no LTO), 'full' and 'thin'"
swift-stdlib-enable-prespecialization "" "whether stdlib should be built with generic metadata prespecialization enabled, defaults to true on Darwin and Linux, false otherwise"
swift-stdlib-passthrough-metadata-allocator "0" "whether stdlib should be built without a custom implementation of MetadataAllocator, relying on malloc+free instead"
swift-stdlib-short-mangling-lookups "1" "whether to build stdlib with fast-path context descriptor lookups based on well-known short manglings"
swift-stdlib-enable-vector-types "1" "whether to build stdlib with support for SIMD and vector types"
swift-stdlib-experimental-hermetic-seal-at-link "0" "whether stdlib should be built with -experimental-hermetic-seal-at-link"
swift-stdlib-disable-instantiation-caches "0" "whether to build stdlib with -disable-preallocated-instantiation-caches"
swift-stdlib-has-type-printing "1" "whether stdlib should support printing user-friendly type name as strings at runtime"
swift-stdlib-trap-function "" "Name of function to call instead of emitting a trap instruction"
swift-disable-dead-stripping "0" "turns off Darwin-specific dead stripping for Swift host tools"
common-swift-flags "" "Flags used for Swift targets other than the stdlib, like the corelibs"
swift-enable-experimental-string-processing "1" "whether to build experimental string processing feature"
swift-earlyswiftsyntax "0" "use the early SwiftSyntax"
swift-enable-backtracing "1" "whether to build the backtracing support"
swift-runtime-fixed-backtracer-path "" "if set, use a fixed path for the backtracer"
swift-stdlib-overridable-retain-release "1" "whether to allow retain/release functions to be overridden by indirecting through function pointers"
## FREESTANDING Stdlib Options
swift-freestanding-flavor "" "when building the FREESTANDING stdlib, which build style to use (options: apple, linux)"
swift-freestanding-sdk "" "which SDK to use when building the FREESTANDING stdlib"
swift-freestanding-triple-name "" "which triple name (e.g. 'none-macho') to use when building the FREESTANDING stdlib"
swift-freestanding-module-name "" "which .swiftmodule name (e.g. 'freestanding') to use when building the FREESTANDING stdlib"
swift-freestanding-archs "" "space-separated list of which architectures to build when building the FREESTANDING stdlib"
## Uncategorised
install-prefix "" "installation prefix"
toolchain-prefix "" "the path to the .xctoolchain directory that houses the install prefix path"
install-destdir "" "the path to use as the filesystem root for the installation"
install-symroot "" "the path to install debug symbols into"
installable-package "" "the path to the archive of the installation directory"
test-installable-package "" "whether to run post-packaging tests on the produced package"
skip-local-build "" "set to skip building for the current host (useful when crosscompiling)"
test-paths "" "run tests located in specific directories and/or files"
native-llvm-tools-path "" "directory that contains LLVM tools that are executable on the build machine"
native-clang-tools-path "" "directory that contains Clang tools that are executable on the build machine"
native-swift-tools-path "" "directory that contains Swift tools that are executable on the build machine"
embed-bitcode-section "0" "embed an LLVM bitcode section in stdlib/overlay binaries for supported platforms"
host-target "" "The host target. LLVM, Clang, and Swift will be built for this target. The built LLVM and Clang will be used to compile Swift for the cross-compilation targets. **This argument is required**"
cross-compile-hosts "" "space-separated list of targets to cross-compile host Swift tools for"
cross-compile-with-host-tools "" "set to use the clang we build for the host to then build the cross-compile hosts"
cross-compile-install-prefixes "" "semicolon-separated list of install prefixes to use for the cross-compiled hosts. The list expands, so if there are more cross-compile hosts than prefixes, unmatched hosts use the last prefix in the list"
cross-compile-deps-path "" "path for CMake to look for cross-compiled library dependencies, such as libXML2"
cross-compile-append-host-target-to-destdir "1" "turns on appending the host target name of each cross-compiled toolchain to its install-destdir, to keep them separate from the natively-built toolchain"
skip-merge-lipo-cross-compile-tools "" "set to skip running merge-lipo after installing cross-compiled host Swift tools"
coverage-db "" "If set, coverage database to use when prioritizing testing"
skip-local-host-install "" "If we are cross-compiling multiple targets, skip an install pass locally if the hosts match"
enable-extract-symbol-dry-run-test "" "If we are dry-running, still run the extract symbol phase so that we can test it"
)
components=(
foundation
libcxx
libdispatch
libxml2
zlib
curl
llbuild
lldb
llvm
static-foundation
static-libdispatch
swift
xctest
)
for component in ${components[@]} ; do
component_skip_test_default=""
KNOWN_SETTINGS+=(
${component}-build-type "Debug" "the build variant for ${component}"
${component}-cmake-options "" "CMake options used for ${component}"
skip-build-${component} "" "set to skip building ${component}"
skip-test-${component} "${component_skip_test_default}" "set to skip testing ${component}"
install-${component} "" "whether to install ${component}"
)
done
# Centralized access point for traced command invocation.
# Every operation that might mutates file system should be called via
# these functions.
function call() {
if [[ ${DRY_RUN} ]] || [[ "${VERBOSE_BUILD}" ]]; then
echo "${PS4}"$(quoted_print "$@")
fi
SECONDS=0
if [[ ! ${DRY_RUN} ]]; then
{ set -x; } 2>/dev/null
"$@"
{ set +x; } 2>/dev/null
fi
}
function with_pushd() {
local dir=$1
shift
if [[ "$1" == "call" ]]; then
shift
fi
if [[ ${DRY_RUN} ]]; then
echo ${PS4}pushd "${dir}"
echo "${PS4}"$(quoted_print "$@")
echo ${PS4}popd
else
set -x
pushd "${dir}"
"$@"
{ set -x; } 2>/dev/null # because $@ might includes { set +x; }
popd
{ set +x; } 2>/dev/null
fi
}
function quoted_print() {
python3 -c 'import shlex; import sys; print(" ".join(shlex.quote(arg) for arg in sys.argv[1:]))' "$@"
}
function toupper() {
echo "$@" | tr '[:lower:]' '[:upper:]'
}
function tolower() {
echo "$@" | tr '[:upper:]' '[:lower:]'
}
function true_false() {
case "$1" in
false | FALSE | 0 | "")
echo "FALSE"
;;
true | TRUE | 1)
echo "TRUE"
;;
*)
echo "true_false: unknown value: $1" >&2
exit 1
;;
esac
}
function to_varname() {
# Uses `tr` because it is orders of magnitude faster than ${1//-/_} on long
# strings, which happens when translating KNOWN_SETTINGS.
toupper "$(echo $1 | tr '-' '_')"
}
function is_llvm_lto_enabled() {
if [[ "${LLVM_ENABLE_LTO}" == "thin" ]] ||
[[ "${LLVM_ENABLE_LTO}" == "full" ]]; then
echo "TRUE"
else
echo "FALSE"
fi
}
function is_swift_lto_enabled() {
if [[ "${SWIFT_TOOLS_ENABLE_LTO}" == "thin" ]] ||
[[ "${SWIFT_TOOLS_ENABLE_LTO}" == "full" ]]; then
echo "TRUE"
else
echo "FALSE"
fi
}
# Support for performing isolated actions.
#
# This is part of refactoring more work to be done or controllable via
# `build-script` itself. For additional information, see:
# https://github.com/apple/swift/issues/42859
#
# To use this functionality, the script is invoked with:
# ONLY_EXECUTE=<action name>
# where <action name> is one of:
# all -- execute all actions
# ${host}-${product}-build -- the build of the product
# ${host}-${product}-test -- the test of the product
# ${host}-${product}-install -- the install of the product
# ${host}-package -- the package construction and test
# merged-hosts-lipo -- the lipo step, if used
# and if used, only the one individual action will be performed.
#
# If not set, the default is `all`.
# should_execute_action(name) -> 1 or nil
#
# Check if the named action should be run in the given script invocation.
function should_execute_action() {
local name="$1"
if [[ "${ONLY_EXECUTE}" = "all" ]] ||
[[ "${ONLY_EXECUTE}" = "${name}" ]]; then
echo 1
fi
}
# should_execute_host_actions_for_phase(host, phase-name) -> 1 or nil
#
# Check if the there are any actions to execute for this host and phase (i.e.,
# "build", "test", or "install")
function should_execute_host_actions_for_phase() {
local host="$1"
local phase_name="$2"
if [[ "${ONLY_EXECUTE}" = "all" ]] ||
[[ "${ONLY_EXECUTE}" == ${host}-*-${phase_name} ]]; then
echo 1
fi
}
function verify_host_is_supported() {
local host="$1"
case ${host} in
freebsd-arm64 \
| freebsd-x86_64 \
| openbsd-amd64 \
| cygwin-x86_64 \
| haiku-x86_64 \
| linux-x86_64 \
| linux-i686 \
| linux-armv5 \
| linux-armv6 \
| linux-armv7 \
| linux-aarch64 \
| linux-powerpc \
| linux-powerpc64 \
| linux-powerpc64le \
| linux-riscv64 \
| linux-s390x \
| linux-static-aarch64 \
| linux-static-x86_64 \
| macosx-x86_64 \
| macosx-arm64 \
| macosx-arm64e \
| iphonesimulator-x86_64 \
| iphonesimulator-arm64 \
| iphoneos-arm64 \
| iphoneos-arm64e \
| appletvsimulator-x86_64 \
| appletvsimulator-arm64 \
| appletvos-arm64 \
| watchsimulator-i386 \
| watchsimulator-x86_64 \
| watchsimulator-arm64 \
| watchos-armv7k \
| watchos-arm64_32 \
| xrsimulator-arm64 \
| xros-arm64 \
| xros-arm64e \
| wasi-wasm32 \
| android-armv7 \
| android-aarch64 \
| android-x86_64)
;;
*)
echo "Unknown host tools target: ${host}"
exit 1
;;
esac
}
function set_build_options_for_host() {
llvm_cmake_options=()
swift_cmake_options=()
lldb_cmake_options=()
llbuild_cmake_options=()
SWIFT_HOST_VARIANT=
SWIFT_HOST_VARIANT_SDK=
SWIFT_HOST_VARIANT_ARCH=
SWIFT_HOST_TRIPLE=
local host="$1"
# Hosts which can be cross-compiled must specify:
# SWIFT_HOST_TRIPLE and llvm_target_arch.
# Hosts which have differing platform names from their
# SWIFT_HOST_VARIANT_* values should change them here as well.
verify_host_is_supported $host
local platform=${host%%-*}
local architecture=${host##*-}
SWIFT_HOST_VARIANT=$platform
SWIFT_HOST_VARIANT_SDK=$(toupper $platform)
SWIFT_HOST_VARIANT_ARCH=$architecture
case ${host} in
android-*)
# Clang uses a different sysroot natively on Android in the Termux
# app, which the Termux build scripts pass in through a $PREFIX
# variable.
if [[ "${PREFIX}" ]] ; then
llvm_cmake_options+=(
-DCLANG_DEFAULT_LINKER:STRING="lld"
-DDEFAULT_SYSROOT:STRING="$(dirname ${PREFIX})"
)
fi
# Android doesn't support building all of compiler-rt yet.
if [[ ! $(is_cross_tools_host "${host}") ]] ; then
llvm_cmake_options+=(
-DCOMPILER_RT_INCLUDE_TESTS:BOOL=FALSE
)
fi
case ${host} in
android-aarch64)
SWIFT_HOST_TRIPLE="aarch64-unknown-linux-android${ANDROID_API_LEVEL}"
llvm_target_arch="AArch64"
;;
android-armv7)
SWIFT_HOST_TRIPLE="armv7-unknown-linux-androideabi${ANDROID_API_LEVEL}"
llvm_target_arch="ARM"
;;
android-x86_64)
SWIFT_HOST_TRIPLE="x86_64-unknown-linux-android${ANDROID_API_LEVEL}"
llvm_target_arch="X86"
;;
esac
;;
linux-armv5)
SWIFT_HOST_TRIPLE="armv5-unknown-linux-gnueabi"
llvm_target_arch="ARM"
;;
linux-armv6)
SWIFT_HOST_TRIPLE="armv6-unknown-linux-gnueabihf"
llvm_target_arch="ARM"
;;
linux-armv7)
SWIFT_HOST_TRIPLE="armv7-unknown-linux-gnueabihf"
llvm_target_arch="ARM"
;;
macosx-* | \
iphoneos-* | \
iphonesimulator-* | \
appletvos-* | \
appletvsimulator-* | \
watchos-* | \
watchsimulator-* | \
xros-* | \
xrsimulator-*)
case ${host} in
macosx-x86_64)
SWIFT_HOST_TRIPLE="x86_64-apple-macosx${DARWIN_DEPLOYMENT_VERSION_OSX}"
llvm_target_arch=""
SWIFT_HOST_VARIANT_SDK="OSX"
cmake_osx_deployment_target="${DARWIN_DEPLOYMENT_VERSION_OSX}"
;;
macosx-arm64)
xcrun_sdk_name="macosx"
llvm_target_arch="AArch64"
SWIFT_HOST_TRIPLE="arm64-apple-macosx${DARWIN_DEPLOYMENT_VERSION_OSX}"
SWIFT_HOST_VARIANT="macosx"
SWIFT_HOST_VARIANT_SDK="OSX"
SWIFT_HOST_VARIANT_ARCH="arm64"
cmake_osx_deployment_target="${DARWIN_DEPLOYMENT_VERSION_OSX}"
;;
macosx-arm64e)
xcrun_sdk_name="macosx"
llvm_target_arch="AArch64"
SWIFT_HOST_TRIPLE="arm64e-apple-macosx${DARWIN_DEPLOYMENT_VERSION_OSX}"
SWIFT_HOST_VARIANT="macosx"
SWIFT_HOST_VARIANT_SDK="OSX"
SWIFT_HOST_VARIANT_ARCH="arm64e"
cmake_osx_deployment_target="${DARWIN_DEPLOYMENT_VERSION_OSX}"
;;
iphonesimulator-x86_64)
SWIFT_HOST_TRIPLE="x86_64-apple-ios${DARWIN_DEPLOYMENT_VERSION_IOS}-simulator"
llvm_target_arch="X86"
SWIFT_HOST_VARIANT_SDK="IOS_SIMULATOR"
cmake_osx_deployment_target=""
;;
iphonesimulator-arm64)
xcrun_sdk_name="iphonesimulator"
llvm_target_arch="AArch64"
SWIFT_HOST_TRIPLE="arm64-apple-ios${DARWIN_DEPLOYMENT_VERSION_IOS}-simulator"
SWIFT_HOST_VARIANT="iphonesimulator"
SWIFT_HOST_VARIANT_SDK="IOS_SIMULATOR"
SWIFT_HOST_VARIANT_ARCH="arm64"
cmake_osx_deployment_target=""
;;
iphoneos-arm64)
SWIFT_HOST_TRIPLE="arm64-apple-ios${DARWIN_DEPLOYMENT_VERSION_IOS}"
llvm_target_arch="AArch64"
SWIFT_HOST_VARIANT_SDK="IOS"
cmake_osx_deployment_target=""
;;
iphoneos-arm64e)
SWIFT_HOST_TRIPLE="arm64e-apple-ios${DARWIN_DEPLOYMENT_VERSION_IOS}"
llvm_target_arch="AArch64"
SWIFT_HOST_VARIANT_SDK="IOS"
cmake_osx_deployment_target=""
;;
appletvsimulator-x86_64)
SWIFT_HOST_TRIPLE="x86_64-apple-tvos${DARWIN_DEPLOYMENT_VERSION_TVOS}-simulator"
llvm_target_arch="X86"
SWIFT_HOST_VARIANT_SDK="TVOS_SIMULATOR"
cmake_osx_deployment_target=""
;;
appletvsimulator-arm64)
xcrun_sdk_name="appletvsimulator"
llvm_target_arch="AArch64"
SWIFT_HOST_TRIPLE="arm64-apple-tvos${DARWIN_DEPLOYMENT_VERSION_IOS}-simulator"
SWIFT_HOST_VARIANT="appletvsimulator"
SWIFT_HOST_VARIANT_SDK="TVOS_SIMULATOR"
SWIFT_HOST_VARIANT_ARCH="arm64"
cmake_osx_deployment_target=""
;;
appletvos-arm64)
SWIFT_HOST_TRIPLE="arm64-apple-tvos${DARWIN_DEPLOYMENT_VERSION_TVOS}"
llvm_target_arch="AArch64"
SWIFT_HOST_VARIANT_SDK="TVOS"
cmake_osx_deployment_target=""
;;
watchsimulator-i386)
SWIFT_HOST_TRIPLE="i386-apple-watchos${DARWIN_DEPLOYMENT_VERSION_WATCHOS}-simulator"
llvm_target_arch="X86"
SWIFT_HOST_VARIANT_SDK="WATCHOS_SIMULATOR"
cmake_osx_deployment_target=""
;;
watchsimulator-x86_64)
SWIFT_HOST_TRIPLE="x86_64-apple-watchos${DARWIN_DEPLOYMENT_VERSION_WATCHOS}-simulator"
llvm_target_arch="X86"
SWIFT_HOST_VARIANT_SDK="WATCHOS_SIMULATOR"
cmake_osx_deployment_target=""
;;
watchsimulator-arm64)
xcrun_sdk_name="watchsimulator"
llvm_target_arch="AArch64"
SWIFT_HOST_TRIPLE="arm64-apple-watchos${DARWIN_DEPLOYMENT_VERSION_IOS}-simulator"
SWIFT_HOST_VARIANT="watchsimulator"
SWIFT_HOST_VARIANT_SDK="WATCHOS_SIMULATOR"
SWIFT_HOST_VARIANT_ARCH="arm64"
cmake_osx_deployment_target=""
;;
watchos-armv7k)
SWIFT_HOST_TRIPLE="armv7k-apple-watchos${DARWIN_DEPLOYMENT_VERSION_WATCHOS}"
llvm_target_arch="ARM"
SWIFT_HOST_VARIANT_SDK="WATCHOS"
cmake_osx_deployment_target=""
;;
watchos-arm64_32)
SWIFT_HOST_TRIPLE="arm64_32-apple-watchos${DARWIN_DEPLOYMENT_VERSION_WATCHOS}"
llvm_target_arch="AArch64"
SWIFT_HOST_VARIANT_SDK="WATCHOS"
cmake_osx_deployment_target=""
;;
xrsimulator-arm64)
SWIFT_HOST_TRIPLE="arm64-apple-xros${DARWIN_DEPLOYMENT_VERSION_XROS}-simulator"
llvm_target_arch="AArch64"
SWIFT_HOST_VARIANT_SDK="XROS_SIMULATOR"
cmake_osx_deployment_target=""
;;
xros-arm64)
SWIFT_HOST_TRIPLE="arm64-apple-xros${DARWIN_DEPLOYMENT_VERSION_XROS}"
llvm_target_arch="AArch64"
SWIFT_HOST_VARIANT_SDK="XROS"
cmake_osx_deployment_target=""
;;
xros-arm64e)
SWIFT_HOST_TRIPLE="arm64e-apple-xros${DARWIN_DEPLOYMENT_VERSION_XROS}"
llvm_target_arch="AArch64"
SWIFT_HOST_VARIANT_SDK="XROS"
cmake_osx_deployment_target=""
;;
esac
if [[ "${DARWIN_SDK_DEPLOYMENT_TARGETS}" != "" ]]; then
# IFS is immediately unset after its use to avoid unwanted
# replacement of characters in subsequent lines.
local IFS=";"; DARWIN_SDK_DEPLOYMENT_TARGETS=($DARWIN_SDK_DEPLOYMENT_TARGETS); unset IFS
for target in "${DARWIN_SDK_DEPLOYMENT_TARGETS[@]}"; do
# IFS is immediately unset after its use to avoid unwanted
# replacement of characters in subsequent lines.
local IFS="-"; triple=($target); unset IFS
sdk_target=$(toupper ${triple[0]}_${triple[1]})
swift_cmake_options+=(
"-DSWIFTLIB_DEPLOYMENT_VERSION_${sdk_target}=${triple[2]}"
)
done
fi
cmake_os_sysroot="$(xcrun --sdk ${platform} --show-sdk-path)"
llvm_cmake_options=(
-DCMAKE_OSX_DEPLOYMENT_TARGET:STRING="${cmake_osx_deployment_target}"
-DCMAKE_OSX_SYSROOT:PATH="${cmake_os_sysroot}"
-DCOMPILER_RT_ENABLE_IOS:BOOL=FALSE
-DCOMPILER_RT_ENABLE_WATCHOS:BOOL=FALSE
-DCOMPILER_RT_ENABLE_XROS:BOOL=FALSE
-DCOMPILER_RT_ENABLE_TVOS:BOOL=FALSE
-DLLVM_ENABLE_MODULES:BOOL="$(true_false ${LLVM_ENABLE_MODULES})"
-DCMAKE_OSX_ARCHITECTURES="${architecture}"
)
if [[ $(is_llvm_lto_enabled) == "TRUE" ]]; then
llvm_cmake_options+=(
"-DLLVM_PARALLEL_LINK_JOBS=${LLVM_NUM_PARALLEL_LTO_LINK_JOBS}"
)
fi
if [[ $(is_swift_lto_enabled) == "TRUE" ]]; then
llvm_cmake_options+=(
-DLLVM_ENABLE_MODULE_DEBUGGING:BOOL=NO
)
swift_cmake_options+=(
-DLLVM_ENABLE_MODULE_DEBUGGING:BOOL=NO
"-DSWIFT_PARALLEL_LINK_JOBS=${SWIFT_TOOLS_NUM_PARALLEL_LTO_LINK_JOBS}"
)
fi
if [[ ! -z "${MIN_RUNTIME_VERSION}" ]]; then
swift_cmake_options+=(
-DSWIFT_MIN_RUNTIME_VERSION="${MIN_RUNTIME_VERSION}"
)
fi
swift_cmake_options+=(
-DSWIFT_DARWIN_DEPLOYMENT_VERSION_OSX="${DARWIN_DEPLOYMENT_VERSION_OSX}"
-DSWIFT_DARWIN_DEPLOYMENT_VERSION_IOS="${DARWIN_DEPLOYMENT_VERSION_IOS}"
-DSWIFT_DARWIN_DEPLOYMENT_VERSION_TVOS="${DARWIN_DEPLOYMENT_VERSION_TVOS}"
-DSWIFT_DARWIN_DEPLOYMENT_VERSION_WATCHOS="${DARWIN_DEPLOYMENT_VERSION_WATCHOS}"
-DSWIFT_DARWIN_DEPLOYMENT_VERSION_XROS="${DARWIN_DEPLOYMENT_VERSION_XROS}"
-DCMAKE_OSX_SYSROOT:PATH="${cmake_os_sysroot}"
# This is needed to make sure to avoid using the wrong architecture
# in the compiler checks CMake performs
-DCMAKE_OSX_ARCHITECTURES="${architecture}"
)
# Avoid building the embedded stdlib and other embedded libraries when cross-compiling.
# Those are already provided by the local host build, and are identical and only cause
# trouble when lipo-ing if they are produced in cross-compile builds too.
if [[ $(is_cross_tools_host "${host}") ]] ; then
swift_cmake_options+=(
-DSWIFT_SHOULD_BUILD_EMBEDDED_STDLIB:BOOL=FALSE
)
fi
lldb_cmake_options+=(
-DCMAKE_OSX_DEPLOYMENT_TARGET:STRING="${cmake_osx_deployment_target}"
-DCMAKE_OSX_SYSROOT:PATH="${cmake_os_sysroot}"
-DCMAKE_OSX_ARCHITECTURES="${architecture}"
)
llbuild_cmake_options+=(
-DCMAKE_OSX_ARCHITECTURES="${architecture}"
)
;;
esac
# We don't currently support building compiler-rt for cross-compile targets.
# It's not clear that's useful anyway.
if [[ $(is_cross_tools_host "${host}") ]] ; then
llvm_cmake_options+=(
-DLLVM_TOOL_COMPILER_RT_BUILD:BOOL=FALSE
-DLLVM_BUILD_EXTERNAL_COMPILER_RT:BOOL=FALSE
)
else
llvm_cmake_options+=(
-DLLVM_TOOL_COMPILER_RT_BUILD:BOOL="$(false_true ${SKIP_BUILD_COMPILER_RT})"
-DLLVM_BUILD_EXTERNAL_COMPILER_RT:BOOL="$(false_true ${SKIP_BUILD_COMPILER_RT})"
)
fi
# If we are asked to not generate test targets for LLVM and or Swift,
# disable as many LLVM tools as we can. This improves compile time when
# compiling with LTO.
#
# *NOTE* Currently we do not support testing LLVM via build-script. But in a
# future commit we will.
#for arg in "$(compute_cmake_llvm_tool_disable_flags)"; do
# llvm_cmake_options+=( ${arg} )
#done
if [[ "${llvm_target_arch}" ]] ; then
llvm_cmake_options+=(
-DLLVM_TARGET_ARCH="${llvm_target_arch}"
)
fi
# For cross-compilable hosts, we need to know the triple
# and it must be the same for both LLVM and Swift
if [[ "${SWIFT_HOST_TRIPLE}" ]] ; then
llvm_cmake_options+=(
-DLLVM_HOST_TRIPLE:STRING="${SWIFT_HOST_TRIPLE}"
)
swift_cmake_options+=(
-DSWIFT_HOST_TRIPLE:STRING="${SWIFT_HOST_TRIPLE}"
)
lldb_cmake_options+=(
-DLLVM_HOST_TRIPLE:STRING="${SWIFT_HOST_TRIPLE}"
)
fi
swift_cmake_options+=(
-DSWIFT_HOST_VARIANT="${SWIFT_HOST_VARIANT}"
-DSWIFT_HOST_VARIANT_SDK="${SWIFT_HOST_VARIANT_SDK}"
-DSWIFT_HOST_VARIANT_ARCH="${SWIFT_HOST_VARIANT_ARCH}"
)
llvm_cmake_options+=(
-DLLVM_LIT_ARGS="${LLVM_LIT_ARGS} -j ${LIT_JOBS}"
)
swift_cmake_options+=(
-DLLVM_LIT_ARGS="${LLVM_LIT_ARGS} -j ${LIT_JOBS}"
)
lldb_cmake_options+=(
-DLLVM_LIT_ARGS="${LLVM_LIT_ARGS} -j ${LIT_JOBS}"
)
if [[ "${CLANG_PROFILE_INSTR_USE}" ]]; then
llvm_cmake_options+=(
-DLLVM_PROFDATA_FILE="${CLANG_PROFILE_INSTR_USE}"
)
fi
if [[ "${SWIFT_PROFILE_INSTR_USE}" ]]; then
swift_cmake_options+=(
-DSWIFT_PROFDATA_FILE="${SWIFT_PROFILE_INSTR_USE}"
)
fi
swift_cmake_options+=(
-DCOVERAGE_DB="${COVERAGE_DB}"
)
}
function configure_default_options() {
# Build a table of all of the known setting variables names.
#
# This is an optimization to do the argument to variable conversion (which is
# slow) in a single pass.
local all_settings=()
for ((i = 0; i < ${#KNOWN_SETTINGS[@]}; i += 3)); do
all_settings+=("${KNOWN_SETTINGS[i]}")
done
local known_setting_varnames=($(to_varname "${all_settings[*]}"))
# Build up an "associative array" mapping setting names to variable names
# (we use this for error checking to identify "known options", and as a fast
# way to map the setting name to a variable name). See the code for scanning
# command line arguments.
#
# This loop also sets (or unsets) each corresponding variable to its default
# value.
#
# NOTE: If the Mac's bash were not stuck in the past, we could "declare -A"
# an associative array, but instead we have to hack it by defining variables.
for ((i = 0; i < ${#KNOWN_SETTINGS[@]}; i += 3)); do
local setting="${KNOWN_SETTINGS[i]}"
local default_value="${KNOWN_SETTINGS[$((i+1))]}"
# Find the variable name in our lookup table.
local varname="${known_setting_varnames[$((i/3))]}"
# Establish the associative array mapping.
eval "${setting//-/_}_VARNAME=${varname}"
if [[ "${default_value}" ]] ; then
# For an explanation of the backslash see http://stackoverflow.com/a/9715377
eval ${varname}=$\default_value
else
unset ${varname}
fi
done
}
configure_default_options
COMMAND_NAME="$(basename "$0")"
# Print instructions for using this script to stdout
usage() {
echo "Usage: ${COMMAND_NAME} [--help|-h] [ --SETTING=VALUE | --SETTING VALUE | --SETTING ]*"
echo
echo " Available settings. Each setting corresponds to a variable,"
echo " obtained by upcasing its name, in this script. A variable"
echo " with no default listed here will be unset in the script if"
echo " not explicitly specified. A setting passed in the 3rd form"
echo " will set its corresponding variable to \"1\"."
echo
setting_list="
| |Setting| Default|Description
| |-------| -------|-----------
"
for ((i = 0; i < ${#KNOWN_SETTINGS[@]}; i += 3)); do
setting_list+="\
| |--${KNOWN_SETTINGS[i]}| ${KNOWN_SETTINGS[$((i+1))]}|${KNOWN_SETTINGS[$((i+2))]}
"
done
echo "${setting_list}" | column -x -s'|' -t
echo
echo "Note: when using the form --SETTING VALUE, VALUE must not begin "
echo " with a hyphen."
echo "Note: the \"--release\" option creates a pre-packaged combination"
echo " of settings used by the buildbot."
echo
echo "Cross-compiling Swift host tools"
echo " When building cross-compiled tools, it first builds for the native"
echo " build host machine. Then it proceeds to build the specified cross-compile"
echo " targets. It currently builds the requested variants of stdlib each"
echo " time around, so once for the native build, then again each time for"
echo " the cross-compile tool targets."
echo
echo " When installing cross-compiled tools, it first installs each target"
echo " arch into a separate subdirectory under install-destdir, since you"
echo " can cross-compile for multiple targets at the same time. It then runs"
echo " recursive-lipo to produce fat binaries by merging the cross-compiled"
echo " targets, installing the merged result into the expected location of"
echo " install-destdir. After that, any remaining steps to extract dsyms and"
echo " create an installable package operates on install-destdir as normal."
}
# Scan all command-line arguments
while [[ "$1" ]] ; do
case "$1" in
-h | --help )
usage
exit
;;
--* )
dashless="${1:2}"
# drop suffix beginning with the first "="
setting="${dashless%%=*}"
# compute the variable to set, using the cached map set up by
# configure_default_options().
varname_var="${setting//-/_}_VARNAME"
varname=${!varname_var}
# check to see if this is a known option
if [[ "${varname}" = "" ]] ; then
echo "error: unknown setting: ${setting}" 1>&2
usage 1>&2
exit 1
fi