Apple M1 Support for MacOS

BuildMacOSUniversalBinary.py

@@ -0,0 +1,328 @@
+#!/usr/bin/env python3
+"""
+The current tooling supported in CMake, Homebrew, and Qt5 are insufficient for
+creating macOS universal binaries automatically for applications like Dolphin
+which have more complicated build requirements (like different libraries, build
+flags and source files for each target architecture).
+
+So instead, this script manages the configuration and compilation of distinct
+builds and project files for each target architecture and then merges the two
+binaries into a single universal binary.
+
+Running this script will:
+1) Generate Xcode project files for the ARM build (if project files don't
+   already exist)
+2) Generate Xcode project files for the x64 build (if project files don't
+   already exist)
+3) Build the ARM project for the selected build_target
+4) Build the x64 project for the selected build_target
+5) Generate universal .app packages combining the ARM and x64 packages
+6) Use the lipo tool to combine the binary objects inside each of the
+   packages into universal binaries
+7) Code sign the final universal binaries using the specified
+   codesign_identity
+"""
+
+import argparse
+import filecmp
+import glob
+import json
+import multiprocessing
+import os
+import shutil
+import subprocess
+
+# The config variables listed below are the defaults, but they can be
+# overridden by command line arguments see parse_args(), or run:
+# BuildMacOSUniversalBinary.py --help
+DEFAULT_CONFIG = {
+
+    # Location of destination universal binary
+    "dst_app": "universal/",
+    # Build Target (dolphin-emu to just build the emulator and skip the tests)
+    "build_target": "ALL_BUILD",
+
+    # Location for CMake to search for files (default is for homebrew)
+    "arm64_cmake_prefix":  "/opt/homebrew",
+    "x86_64_cmake_prefix": "/usr/local",
+
+    # Locations to qt5 directories for arm and x64 libraries
+    # The default values of these paths are taken from the default
+    # paths used for homebrew
+    "arm64_qt5_path":  "/opt/homebrew/opt/qt5",
+    "x86_64_qt5_path": "/usr/local/opt/qt5",
+
+    # Identity to use for code signing. "-" indicates that the app will not
+    # be cryptographically signed/notarized but will instead just use a
+    # SHA checksum to verify the integrity of the app. This doesn't
+    # protect against malicious actors, but it does protect against
+    # running corrupted binaries and allows for access to the extended
+    # permisions needed for ARM builds
+    "codesign_identity":  "-",
+    # Entitlements file to use for code signing
+    "entitlements": "../Source/Core/DolphinQt/DolphinEmu.entitlements",
+
+    # Minimum macOS version for each architecture slice
+    "arm64_mac_os_deployment_target":  "11.0.0",
+    "x86_64_mac_os_deployment_target": "10.12.0",
+
+    # CMake Generator to use for building
+    "generator": "Unix Makefiles",
+    "build_type": "Release",
+
+}
+
+# Architectures to build for. This is explicity left out of the command line
+# config options for several reasons:
+# 1) Adding new architectures will generally require more code changes
+# 2) Single architecture builds should utilize the normal generated cmake
+#    project files rather than this wrapper script
+
+ARCHITECTURES = ["x86_64", "arm64"]
+
+
+def parse_args(conf=DEFAULT_CONFIG):
+    """
+    Parses the command line arguments into a config dictionary.
+    """
+
+    parser = argparse.ArgumentParser(
+        formatter_class=argparse.ArgumentDefaultsHelpFormatter)
+
+    parser.add_argument(
+        "--target",
+        help="Build target in generated project files",
+        default=conf["build_target"],
+        dest="build_target")
+    parser.add_argument(
+        "-G",
+        help="CMake Generator to use for creating project files",
+        default=conf["generator"],
+        dest="generator")
+    parser.add_argument(
+        "--build_type",
+        help="CMake build type [Debug, Release, RelWithDebInfo, MinSizeRel]",
+        default=conf["build_type"],
+        dest="build_type")
+    parser.add_argument(
+        "--dst_app",
+        help="Directory where universal binary will be stored",
+        default=conf["dst_app"])
+
+    parser.add_argument(
+        "--entitlements",
+        help="Path to .entitlements file for code signing",
+        default=conf["entitlements"])
+
+    parser.add_argument(
+        "--codesign",
+        help="Code signing identity to use to sign the applications",
+        default=conf["codesign_identity"],
+        dest="codesign_identity")
+
+    for arch in ARCHITECTURES:
+        parser.add_argument(
+             f"--{arch}_cmake_prefix",
+             help="Folder for cmake to search for packages",
+             default=conf[arch+"_cmake_prefix"],
+             dest=arch+"_cmake_prefix")
+
+        parser.add_argument(
+             f"--{arch}_qt5_path",
+             help=f"Install path for {arch} qt5 libraries",
+             default=conf[arch+"_qt5_path"])
+
+        parser.add_argument(
+             f"--{arch}_mac_os_deployment_target",
+             help=f"Deployment architecture for {arch} slice",
+             default=conf[arch+"_mac_os_deployment_target"])
+
+    return vars(parser.parse_args())
+
+
+def lipo(path0, path1, dst):
+    if subprocess.call(["lipo", "-create", "-output", dst, path0, path1]) != 0:
+        print(f"WARNING: {path0} and {path1} cannot be lipo'd")
+
+        shutil.copy(path0, dst)
+
+
+def recursive_merge_binaries(src0, src1, dst):
+    """
+    Merges two build trees together for different architectures into a single
+    universal binary.
+
+    The rules for merging are:
+
+    1) Files that exist in either src tree are copied into the dst tree
+    2) Files that exist in both trees and are identical are copied over
+       unmodified
+    3) Files that exist in both trees and are non-identical are lipo'd
+    4) Symlinks are created in the destination tree to mirror the hierarchy in
+       the source trees
+    """
+
+    # Check that all files present in the folder are of the same type and that
+    # links link to the same relative location
+    for newpath0 in glob.glob(src0+"/*"):
+        filename = os.path.basename(newpath0)
+        newpath1 = os.path.join(src1, filename)
+        if not os.path.exists(newpath1):
+            continue
+
+        if os.path.islink(newpath0) and os.path.islink(newpath1):
+            if os.path.relpath(newpath0,src0) == os.path.relpath(newpath1,src1):
+                continue
+
+        if os.path.isdir(newpath0) and os.path.isdir(newpath1):
+            continue
+
+        # isfile() can be true for links so check that both are not links
+        # before checking if they are both files
+        if (not os.path.islink(newpath0)) and (not os.path.islink(newpath1)):
+            if os.path.isfile(newpath0) and os.path.isfile(newpath1):
+                continue
+
+        raise Exception(f"{newpath0} and {newpath1} cannot be " +
+                        "merged into a universal binary because they are of " +
+                        "incompatible types. Perhaps the installed libraries" +
+                        " are from different versions for each architecture")
+
+    for newpath0 in glob.glob(src0+"/*"):
+        filename = os.path.basename(newpath0)
+        newpath1 = os.path.join(src1, filename)
+        new_dst_path = os.path.join(dst, filename)
+        if os.path.islink(newpath0):
+            # Symlinks will be fixed after files are resolved
+            continue
+
+        if not os.path.exists(newpath1):
+            if os.path.isdir(newpath0):
+                shutil.copytree(newpath0, new_dst_path)
+            else:
+                shutil.copy(newpath0, new_dst_path)
+
+            continue
+
+        if os.path.isdir(newpath1):
+            os.mkdir(new_dst_path)
+            recursive_merge_binaries(newpath0, newpath1, new_dst_path)
+            continue
+
+        if filecmp.cmp(newpath0, newpath1):
+            shutil.copy(newpath0, new_dst_path)
+        else:
+            lipo(newpath0, newpath1, new_dst_path)
+
+    # Loop over files in src1 and copy missing things over to dst
+    for newpath1 in glob.glob(src1+"/*"):
+        filename = os.path.basename(newpath1)
+        newpath0 = os.path.join(src0, filename)
+        new_dst_path = os.path.join(dst, filename)
+        if (not os.path.exists(newpath0)) and (not os.path.islink(newpath1)):
+            if os.path.isdir(newpath1):
+                shutil.copytree(newpath1, new_dst_path)
+            else:
+                shutil.copy(newpath1, new_dst_path)
+
+    # Fix up symlinks for path0
+    for newpath0 in glob.glob(src0+"/*"):
+        filename = os.path.basename(newpath0)
+        new_dst_path = os.path.join(dst, filename)
+        if os.path.islink(newpath0):
+            relative_path = os.path.relpath(os.path.realpath(newpath0), src0)
+            os.symlink(relative_path, new_dst_path)
+    # Fix up symlinks for path1
+    for newpath1 in glob.glob(src1+"/*"):
+        filename = os.path.basename(newpath1)
+        new_dst_path = os.path.join(dst, filename)
+        newpath0 = os.path.join(src0, filename)
+        if os.path.islink(newpath1) and not os.path.exists(newpath0):
+            relative_path = os.path.relpath(os.path.realpath(newpath1), src1)
+            os.symlink(relative_path, new_dst_path)
+
+
+def build(config):
+    """
+    Builds the project with the parameters specified in config.
+    """
+
+    print("Building config:")
+    print(json.dumps(config, indent=4))
+
+    # Configure and build single architecture builds for each architecture
+    for arch in ARCHITECTURES:
+        if not os.path.exists(arch):
+            os.mkdir(arch)
+
+        env = os.environ.copy()
+        env["Qt5_DIR"] = config[arch+"_qt5_path"]
+        env["CMAKE_OSX_ARCHITECTURES"] = arch
+        env["CMAKE_PREFIX_PATH"] = config[arch+"_cmake_prefix"]
+
+        # Add the other architecture's prefix path to the ignore path so that
+        # CMake doesn't try to pick up the wrong architecture's libraries when
+        # cross compiling.
+        ignore_path = ""
+        for a in ARCHITECTURES:
+            if a != arch:
+                ignore_path = config[a+"_cmake_prefix"]
+
+        subprocess.check_call([
+                "cmake", "../../", "-G", config["generator"],
+                "-DCMAKE_BUILD_TYPE=" + config["build_type"],
+                # System name needs to be specified for CMake to use
+                # the specified CMAKE_SYSTEM_PROCESSOR
+                "-DCMAKE_SYSTEM_NAME=Darwin",
+                "-DCMAKE_PREFIX_PATH="+config[arch+"_cmake_prefix"],
+                "-DCMAKE_SYSTEM_PROCESSOR="+arch,
+                "-DCMAKE_IGNORE_PATH="+ignore_path,
+                "-DCMAKE_OSX_DEPLOYMENT_TARGET="
+                + config[arch+"_mac_os_deployment_target"],
+                "-DMACOS_CODE_SIGNING_IDENTITY="
+                + config["codesign_identity"],
+                "-DMACOS_CODE_SIGNING_IDENTITY_UPDATER="
+                + config["codesign_identity"],
+                '-DMACOS_CODE_SIGNING="ON"'
+            ],
+            env=env, cwd=arch)
+
+        threads = multiprocessing.cpu_count()
+        subprocess.check_call(["cmake", "--build", ".",
+                               "--config", config["build_type"],
+                               "--parallel", f"{threads}"], cwd=arch)
+
+    dst_app = config["dst_app"]
+
+    if os.path.exists(dst_app):
+        shutil.rmtree(dst_app)
+
+    # Create and codesign the universal binary/
+    os.mkdir(dst_app)
+
+    # Source binary trees to merge together
+    src_app0 = ARCHITECTURES[0]+"/Binaries/"
+    src_app1 = ARCHITECTURES[1]+"/Binaries/"
+
+    recursive_merge_binaries(src_app0, src_app1, dst_app)
+    for path in glob.glob(dst_app+"/*"):
+        if os.path.isdir(path) and os.path.splitext(path)[1] != ".app":
+            continue
+
+        subprocess.check_call([
+            "codesign",
+            "-d",
+            "--force",
+            "-s",
+            config["codesign_identity"],
+            "--options=runtime",
+            "--entitlements", config["entitlements"],
+            "--deep",
+            "--verbose=2",
+            path])
+
+
+if __name__ == "__main__":
+    conf = parse_args()
+    build(conf)
+    print("Built Universal Binary successfully!")

CMakeLists.txt

@@ -2,13 +2,17 @@
 # General setup
 #
 cmake_minimum_required(VERSION 3.10)
-set(CMAKE_OSX_ARCHITECTURES "x86_64")
+
 # Minimum OS X version.
 # This is inserted into the Info.plist as well.
 
-# MacOS prior to 10.12 did not fully support C++17, which is used to
-# handle configuration options
-set(CMAKE_OSX_DEPLOYMENT_TARGET "10.12.0" CACHE STRING "")
+# MacOS prior to 10.14 did not support aligned alloc which is used to implement
+# std::unique_ptr in the arm64 C++ standard library. x86_64 builds can override
+# this to 10.12.0 using -DCMAKE_OSX_DEPLOYMENT_TARGET="10.12.0" without issue.
+# This is done in the universal binary building script to build a binary that 
+# runs on 10.12 on x86_64 computers, while still containing an arm64 slice.
+
+set(CMAKE_OSX_DEPLOYMENT_TARGET "10.14.0" CACHE STRING "")
 
 set(CMAKE_USER_MAKE_RULES_OVERRIDE "CMake/FlagsOverride.cmake")
 
@@ -68,8 +72,12 @@ else()
 endif()
 
 if(APPLE)
-  option(OSX_USE_DEFAULT_SEARCH_PATH "Don't prioritize system library paths" OFF)
-  option(SKIP_POSTPROCESS_BUNDLE "Skip postprocessing bundle for redistributability" OFF)
+  option(MACOS_USE_DEFAULT_SEARCH_PATH "Don't prioritize system library paths" OFF)
+  option(SKIP_POSTPROCESS_BUNDLE "Skip postprocessing bundle for redistributability" OFF) 
+  # Enable adhoc code signing by default (otherwise makefile builds on ARM will not work)
+  option(MACOS_CODE_SIGNING "Enable codesigning" ON)
+  set(MACOS_CODE_SIGNING_IDENTITY "-" CACHE STRING "The identity used for codesigning.")
+  set(MACOS_CODE_SIGNING_IDENTITY_UPDATER "-" CACHE STRING "The identity used for codesigning, for the updater.")
 endif()
 
 if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
@@ -290,7 +298,7 @@ else()
 endif()
 
 if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
-  if(NOT OSX_USE_DEFAULT_SEARCH_PATH)
+  if(NOT MACOS_USE_DEFAULT_SEARCH_PATH)
     # Hack up the path to prioritize the path to built-in OS libraries to
     # increase the chance of not depending on a bunch of copies of them
     # installed by MacPorts, Fink, Homebrew, etc, and ending up copying
@@ -306,9 +314,10 @@ if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
   set(CMAKE_XCODE_ATTRIBUTE_GCC_STRICT_ALIASING NO)
 
   # Specify target CPUs.
-  check_and_add_flag(HAVE_MSSSE3 -mssse3)
-  check_and_add_flag(HAVE_ARCH_CORE2 -march=core2)
-
+  if(_ARCH_64 AND CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64|amd64|AMD64")
+    check_and_add_flag(HAVE_MSSSE3 -mssse3)
+    check_and_add_flag(HAVE_ARCH_CORE2 -march=core2)
+  endif()
   # Linker flags.
   # Drop unreachable code and data.
   set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-dead_strip,-dead_strip_dylibs")

Externals/MoltenVK/version.txt

@@ -1 +1 @@
-MoltenVK from https://github.com/KhronosGroup/MoltenVK, commit b9b78def172074872bfbb1015ccf75eeec554ae2
+MoltenVK from https://vulkan.lunarg.com/sdk/home#mac, version 1.2.170.0