├── .gitignore ├── CONTRIBUTING.md ├── LICENSE ├── README.md ├── img ├── header_search_paths.png ├── ld_target_basesdk.png ├── project_basesdk.png └── treat_warnings_as_errors.png └── patches ├── dyld.patch ├── ld64.patch └── tapi.patch /.gitignore: -------------------------------------------------------------------------------- 1 | **/.DS_Store 2 | 3 | -------------------------------------------------------------------------------- /CONTRIBUTING.md: -------------------------------------------------------------------------------- 1 | # How to Contribute 2 | 3 | We'd love to accept your patches and contributions to this project. There are 4 | just a few small guidelines you need to follow. 5 | 6 | ## Contributor License Agreement 7 | 8 | Contributions to this project must be accompanied by a Contributor License 9 | Agreement. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [yyyy] [name of copyright owner] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # ld64 2 | 3 | These instructions are for building ld64 based on Apple's sources for the ld64 that comes 4 | with Xcode 10.1 and the dyld from Mojave (10.14.1) with clang/llvm 7.0.1. 5 | 6 | Thanks to @rmaz for helping simplify my instructions. 7 | 8 | 1. Initial setup 9 | 1. Install Xcode 10.1 from [Apple](https://developer.apple.com/download/) 10 | 1. Clone this project, or download the zip. 11 | 1. Navigate to the project directory in the terminal. 12 | 1. Make sure there are no spaces in the current directory path, or things will go badly for you. 13 | 1. Get Sources 14 | 1. `curl https://opensource.apple.com/tarballs/ld64/ld64-409.12.tar.gz --output ld64-409.12.tar.gz | tar xz` 15 | 1. `curl https://opensource.apple.com/tarballs/dyld/dyld-635.2.tar.gz --output dyld-635.2.tar.gz | tar xz` 16 | 1. `mkdir tapi-master` 17 | 1. `curl -L https://github.com/ributzka/tapi/tarball/master | tar xz -C tapi-master --strip-components=1` 18 | 1. `curl http://releases.llvm.org/7.0.1/llvm-7.0.1.src.tar.xz | tar xJ` 19 | 1. `curl http://releases.llvm.org/7.0.1/cfe-7.0.1.src.tar.xz | tar xJ` 20 | 1. Apply patches 21 | 1. `patch -p1 -d tapi-master < patches/tapi.patch` 22 | 1. `patch -p1 -d ld64-409.12 < patches/ld64.patch` 23 | 1. `patch -p1 -d dyld-635.2 < patches/dyld.patch` 24 | 1. Configure ld64 project 25 | 1. `open ld64-409.12/ld64.xcodeproj` 26 | 1. Change the `Base SDK` for the ld64 project from `macosx.internal` to `macos` 27 | ![alt text](img/project_basesdk.png) 28 | 1. Remove the override for `Base SDK` from the ld target so it changes from `macosx.internal` to `macos` (you can do this be selecting it and hitting delete). 29 | ![alt text](img/ld_target_basesdk.png) 30 | 1. Add the following `Header Search Paths`: 31 | * `$(SRCROOT)/../tapi-master/include` 32 | * `$(SRCROOT)/../dyld-635.2/include` 33 | * `$(SRCROOT)/../llvm-7.0.1.src/include` 34 | * `$(SRCROOT)/../cfe-7.0.1.src/include` 35 | ![alt text](img/header_search_paths.png) 36 | 1. Set `Treat Warnings as Errors` to `No` 37 | ![alt text](img/treat_warnings_as_errors.png) 38 | 1. Select the `ld` target to build 39 | 1. `Build` 40 | 41 | You should be able to replace the ld64 that comes with Xcode 10.1 with this one (located in `/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/`). It will successfully link macOS 10.14, iOS 12 apps. 42 | 43 | **Be sure to back up your original `ld64`!!!** 44 | 45 | **Do not ship anything to Apple that was linked with this linker. This is purely for debugging linker related issues.** 46 | 47 | ## Level of support 48 | This is not an officially supported Google product. 49 | -------------------------------------------------------------------------------- /img/header_search_paths.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/dmaclach/ld64/4d0b51031188950db1611fba3b466e7ee242e65e/img/header_search_paths.png -------------------------------------------------------------------------------- /img/ld_target_basesdk.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/dmaclach/ld64/4d0b51031188950db1611fba3b466e7ee242e65e/img/ld_target_basesdk.png -------------------------------------------------------------------------------- /img/project_basesdk.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/dmaclach/ld64/4d0b51031188950db1611fba3b466e7ee242e65e/img/project_basesdk.png -------------------------------------------------------------------------------- /img/treat_warnings_as_errors.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/dmaclach/ld64/4d0b51031188950db1611fba3b466e7ee242e65e/img/treat_warnings_as_errors.png -------------------------------------------------------------------------------- /patches/dyld.patch: -------------------------------------------------------------------------------- 1 | diff -Naur dyld-635.2.orig/include/mach-o/dyld.h dyld-635.2/include/mach-o/dyld.h 2 | --- dyld-635.2.orig/include/mach-o/dyld.h 2018-06-18 16:44:51.000000000 -0700 3 | +++ dyld-635.2/include/mach-o/dyld.h 2019-01-18 20:58:51.000000000 -0800 4 | @@ -144,6 +144,7 @@ 5 | 6 | typedef struct __NSObjectFileImage* NSObjectFileImage; 7 | 8 | +#define __API_UNAVAILABLE_PLATFORM_bridgeos bridgeos,unavailable 9 | 10 | 11 | /* NSObjectFileImage can only be used with MH_BUNDLE files */ 12 | diff -Naur dyld-635.2.orig/include/mach-o/dyld_priv.h dyld-635.2/include/mach-o/dyld_priv.h 13 | --- dyld-635.2.orig/include/mach-o/dyld_priv.h 2018-04-19 21:42:22.000000000 -0700 14 | +++dyld-635.2/include/mach-o/dyld_priv.h 2019-01-18 21:10:56.000000000 -0800 15 | @@ -180,6 +180,8 @@ 16 | uint32_t version; 17 | } dyld_build_version_t; 18 | 19 | +#define __API_AVAILABLE_PLATFORM_bridgeos(x) bridgeos,introduced=x 20 | + 21 | // Returns the active platform of the process 22 | extern dyld_platform_t dyld_get_active_platform(void) __API_AVAILABLE(macos(10.14), ios(12.0), watchos(5.0), tvos(12.0), bridgeos(3.0)); 23 | 24 | -------------------------------------------------------------------------------- /patches/ld64.patch: -------------------------------------------------------------------------------- 1 | diff -Naur ld64-409.12.orig/src/ld/Options.cpp ld64-409.12/src/ld/Options.cpp 2 | --- ld64-409.12.orig/src/ld/Options.cpp 2018-09-18 15:01:35.000000000 -0700 3 | +++ ld64-409.12/src/ld/Options.cpp 2019-01-18 21:13:17.000000000 -0800 4 | @@ -60,7 +60,7 @@ 5 | // magic to place command line in crash reports 6 | const int crashreporterBufferSize = 2000; 7 | static char crashreporterBuffer[crashreporterBufferSize]; 8 | -#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070 9 | +#if 0 10 | #include 11 | // hack until ld does not need to build on 10.6 anymore 12 | struct crashreporter_annotations_t gCRAnnotations 13 | @@ -4667,7 +4667,7 @@ 14 | break; 15 | case Options::kDyld: 16 | // arm64e has support for compressed LINKEDIT. 17 | - if ( (fArchitecture == CPU_TYPE_ARM64) && (fSubArchitecture == CPU_SUBTYPE_ARM64_E) ) 18 | + if ( (fArchitecture == CPU_TYPE_ARM64) && (fSubArchitecture == CPU_SUBTYPE_ARM64E) ) 19 | break; 20 | case Options::kPreload: 21 | case Options::kStaticExecutable: 22 | @@ -5813,7 +5813,7 @@ 23 | bool newLinker = false; 24 | 25 | // build command line buffer in case ld crashes 26 | -#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070 27 | +#if 0 28 | CRSetCrashLogMessage(crashreporterBuffer); 29 | #endif 30 | const char* srcRoot = getenv("SRCROOT"); 31 | -------------------------------------------------------------------------------- /patches/tapi.patch: -------------------------------------------------------------------------------- 1 | diff -Naur tapi-master/include/tapi/APIVersion.h tapi-master.old/include/tapi/APIVersion.h 2 | --- tapi-master/include/tapi/APIVersion.h 2017-09-07 16:09:54.000000000 -0700 3 | +++ tapi-master.old/include/tapi/APIVersion.h 2019-01-18 21:13:56.000000000 -0800 4 | @@ -25,7 +25,7 @@ 5 | /// 6 | 7 | #define TAPI_API_VERSION_MAJOR 1U 8 | -#define TAPI_API_VERSION_MINOR 2U 9 | +#define TAPI_API_VERSION_MINOR 3U 10 | #define TAPI_API_VERSION_PATCH 0U 11 | 12 | namespace tapi { 13 | diff -Naur tapi-master/include/tapi/LinkerInterfaceFile.h tapi-master.old/include/tapi/LinkerInterfaceFile.h 14 | --- tapi-master/include/tapi/LinkerInterfaceFile.h 2017-09-07 16:09:54.000000000 -0700 15 | +++ tapi-master.old/include/tapi/LinkerInterfaceFile.h 2019-01-18 21:24:04.000000000 -0800 16 | @@ -260,6 +260,12 @@ 17 | cpu_type_t cpuType, cpu_subtype_t cpuSubType, ParsingFlags flags, 18 | PackedVersion32 minOSVersion, std::string &errorMessage) noexcept; 19 | 20 | + static LinkerInterfaceFile * 21 | + create(const std::string &path, 22 | + cpu_type_t cpuType, cpu_subtype_t cpuSubType, 23 | + ParsingFlags flags, 24 | + PackedVersion32 minOSVersion, std::string &errorMessage) noexcept; 25 | + 26 | /// 27 | /// \brief Query the file type. 28 | /// \return Returns the file type this TAPI file represents. 29 | @@ -360,6 +366,13 @@ 30 | /// 31 | const std::string &getParentFrameworkName() const noexcept; 32 | 33 | + 34 | + LinkerInterfaceFile* getInlinedFramework(const std::string &path, 35 | + cpu_type_t cpuType, 36 | + cpu_subtype_t cpuSubType, 37 | + ParsingFlags flags, 38 | + PackedVersion32 minOSVersion, 39 | + std::string &errorMessage) const noexcept; 40 | /// 41 | /// \brief Obtain the list of allowable clients. 42 | /// \return Returns a list of allowable clients. 43 | @@ -395,6 +408,8 @@ 44 | /// 45 | const std::vector &undefineds() const noexcept; 46 | 47 | + const std::vector &inlinedFrameworkNames() const noexcept; 48 | + 49 | /// 50 | /// \brief Destructor. 51 | /// \since 1.0 52 | diff -Naur tapi-master/include/tapi/Version.inc tapi-master.old/include/tapi/Version.inc 53 | --- tapi-master/include/tapi/Version.inc 1969-12-31 16:00:00.000000000 -0800 54 | +++ tapi-master.old/include/tapi/Version.inc 2019-01-18 20:36:48.000000000 -0800 55 | @@ -0,0 +1,4 @@ 56 | +#define TAPI_VERSION 1.3.0 57 | +#define TAPI_VERSION_MAJOR 1U 58 | +#define TAPI_VERSION_MINOR 3U 59 | +#define TAPI_VERSION_PATCH 0U 60 | --------------------------------------------------------------------------------