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2aea63710e
The install_name trick we are using to make sure that an application built with a deployment target new enough to *guarantee* that Swift will be available in the OS (and therefore don't need dylibs bundled) link directly to /usr/lib/swift/*.dylib, but rewrites the the library paths to be rpath-relative for older OS's (e.g., @rpath/lib/swift/libswiftCore.dylib) doesn't work for sub-minor version numbers, e.g., the tools can't distinguish between 10.14.4 and 10.14. Therefore, macOS 10.14 is both an "older OS" and a "newer OS". Hack around the primary problem caused by this---the inability of first-party Swift programs to launch on macOS 10.14.4---by treating macOS 10.14 as an "older OS" when building for the Xcode toolchain (which is used by anyone who will deploy back to an older OS, e.g., 3rd party applications) but treat it as a "newer OS" when building for the OS toolchains (which is used when building the OS itself). Fixes rdar://problem/47007519.
93 lines
3.3 KiB
C
93 lines
3.3 KiB
C
//===--- magic-symbols-for-install-name.c - Magic linker directive symbols ===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// A file containing magic symbols that instruct the linker to use a
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// different install name when targeting older OSes. This file gets
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// compiled into all of the libraries that are embedded for backward
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// deployment.
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//
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//===----------------------------------------------------------------------===//
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#if defined(__APPLE__) && defined(__MACH__)
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#include <Availability.h>
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#include <TargetConditionals.h>
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#include "../public/SwiftShims/Visibility.h"
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#define RPATH_INSTALL_NAME_DIRECTIVE_IMPL2(name, major, minor) \
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SWIFT_RUNTIME_EXPORT const char install_name_ ## major ## _ ## minor \
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__asm("$ld$install_name$os" #major "." #minor "$@rpath/lib" #name ".dylib"); \
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const char install_name_ ## major ## _ ## minor = 0;
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#define RPATH_INSTALL_NAME_DIRECTIVE_IMPL(name, major, minor) \
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RPATH_INSTALL_NAME_DIRECTIVE_IMPL2(name, major, minor)
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#define RPATH_INSTALL_NAME_DIRECTIVE(major, minor) \
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RPATH_INSTALL_NAME_DIRECTIVE_IMPL(SWIFT_TARGET_LIBRARY_NAME, major, minor)
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#if TARGET_OS_WATCH
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// Check watchOS first, because TARGET_OS_IPHONE includes watchOS.
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RPATH_INSTALL_NAME_DIRECTIVE( 2, 0)
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RPATH_INSTALL_NAME_DIRECTIVE( 2, 1)
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RPATH_INSTALL_NAME_DIRECTIVE( 2, 2)
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RPATH_INSTALL_NAME_DIRECTIVE( 3, 0)
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RPATH_INSTALL_NAME_DIRECTIVE( 3, 1)
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RPATH_INSTALL_NAME_DIRECTIVE( 3, 2)
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RPATH_INSTALL_NAME_DIRECTIVE( 4, 0)
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RPATH_INSTALL_NAME_DIRECTIVE( 4, 1)
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RPATH_INSTALL_NAME_DIRECTIVE( 4, 2)
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RPATH_INSTALL_NAME_DIRECTIVE( 4, 3)
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RPATH_INSTALL_NAME_DIRECTIVE( 5, 0)
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RPATH_INSTALL_NAME_DIRECTIVE( 5, 1)
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#elif TARGET_OS_IPHONE
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RPATH_INSTALL_NAME_DIRECTIVE( 7, 0)
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RPATH_INSTALL_NAME_DIRECTIVE( 7, 1)
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RPATH_INSTALL_NAME_DIRECTIVE( 8, 0)
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RPATH_INSTALL_NAME_DIRECTIVE( 8, 1)
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RPATH_INSTALL_NAME_DIRECTIVE( 8, 2)
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RPATH_INSTALL_NAME_DIRECTIVE( 8, 3)
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RPATH_INSTALL_NAME_DIRECTIVE( 8, 4)
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RPATH_INSTALL_NAME_DIRECTIVE( 9, 0)
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RPATH_INSTALL_NAME_DIRECTIVE( 9, 1)
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RPATH_INSTALL_NAME_DIRECTIVE( 9, 2)
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RPATH_INSTALL_NAME_DIRECTIVE( 9, 3)
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RPATH_INSTALL_NAME_DIRECTIVE(10, 0)
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RPATH_INSTALL_NAME_DIRECTIVE(10, 1)
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RPATH_INSTALL_NAME_DIRECTIVE(10, 2)
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RPATH_INSTALL_NAME_DIRECTIVE(10, 3)
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RPATH_INSTALL_NAME_DIRECTIVE(11, 0)
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RPATH_INSTALL_NAME_DIRECTIVE(11, 1)
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RPATH_INSTALL_NAME_DIRECTIVE(11, 2)
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RPATH_INSTALL_NAME_DIRECTIVE(11, 3)
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RPATH_INSTALL_NAME_DIRECTIVE(11, 4)
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RPATH_INSTALL_NAME_DIRECTIVE(12, 0)
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RPATH_INSTALL_NAME_DIRECTIVE(12, 1)
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#elif TARGET_OS_OSX
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RPATH_INSTALL_NAME_DIRECTIVE(10, 9)
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RPATH_INSTALL_NAME_DIRECTIVE(10, 10)
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RPATH_INSTALL_NAME_DIRECTIVE(10, 11)
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RPATH_INSTALL_NAME_DIRECTIVE(10, 12)
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RPATH_INSTALL_NAME_DIRECTIVE(10, 13)
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// When building with a deployment target of < macOS 10.14,
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// treat macOS 10.14 as an "older OS."
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#if __MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_14
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RPATH_INSTALL_NAME_DIRECTIVE(10, 14)
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#endif
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#else
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#error Unknown target.
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#endif
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#endif // defined(__APPLE__) && defined(__MACH__)
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