iOS最新objc4 可调式/编译源码 objc4-906.2 M芯片 macOS Sonoma（14.1） Xcode 15.0+

背景

随着macOS升级到Sonoma，Xcode升级到15.0+以后，之前的objc4-866运行调试之后就出现了Crash，无法进行正常的调试。苹果在2023年9月更新了objc4-906版本，因此便针对目前的编译环境配置了一版可编译调试工程。文末附有可以编译调试版本链接。

编译调试环境

本文基于目前手头设备进行的编译调试，如果不符合下述条件，可能会出现无法正常编译调试的情况。

M芯片(本机M1 Pro)
macOS Sonoma (14.1)
Xcode 15.0+

源码下载

修改工程配置

修改Base SDK

打开objc4工程，然后打开objc.xcodeproj。然后选择objc这target编译一下。可以看到报错如下。

在Project->build setting->Base SDK，选择 macOS。依次对objc-evn和objc-trampolines进行修改

修改Run Script

修改objc target的Run Script(markgc)脚本，将 macosx.internal 改成macosx。

bash 复制代码

set -x

/usr/bin/xcrun -sdk macosx clang++ -Wall -mmacosx-version-min=10.12 -arch x86_64 -std=c++11 "${SRCROOT}/markgc.cpp" -o "${BUILT_PRODUCTS_DIR}/markgc"

"${BUILT_PRODUCTS_DIR}/markgc" "${BUILT_PRODUCTS_DIR}/libobjc.A.dylib"

补充缺失文件

再次编译objc，发现错误提示有些.h文件无法找到，首先在objc4工程根目录下新建一个目录，文件名随便，我这里就叫dependency，然后在Build Settings -> Header Search Paths中添加此路径"$(SRCROOT)/dependency"，如图所示 1.'sys/reason.h' file not found

打开下载的xun文件夹，然后在xnu/bsd/sys/目录下找到reason.h文件，copy到 dependency/sys/文件夹中（没有就新建）

2.'mach-o/dyld_priv.h' file not found

打开下载的dyld文件夹，在dyld/include/mach-o目录下找到 dyld_priv.h，copy到dependency/mach-o/目录下

3.'os/lock_private.h' file not found

在libplatform/private/os/找到 lock_private.h，copy到dependency/os/目录下

4.'os/base_private.h' file not found

在xun/libkern/os/找到 base_private.h，copy到dependency/os/

5.'pthread/tsd_private.h' file not found

在libpthread/private/pthread/目录下找到tsd_private.h，copy到dependency/pthread/

6.'machine/cpu_capabilities.h' file not found

在xnu/osfmk/machine/目录下找到 cpu_capabilities.h, copy到dependency/machine/

7.'os/tsd.h' file not found

在xnu/libsyscall/os/目录下找到 tsd.h, copy到dependency/os/

8.'System/pthread_machdep.h' file not found

在Libc-825.40.1/pthreads/目录下找到 pthread_machdep.h, copy到dependency/System/

9.'System/machine/cpu_capabilities.h' file not found

在xnu/osfmk/machine/ 目录下找到 cpu_capabilities.h, copy到 dependency/System/machine/

10.'os/variant_private.h' file not found

在Libc/os/目录下找到 variant_private.h，copy到dependency/os/

11.'pthread/spinlock_private.h' file not found

在libpthread/private/pthread/目录下找到spinlock_private.h，copy到dependency/pthread/

12.'objc-shared-cache.h' file not found

在 dyld/include/ 目录下找到 objc-shared-cache.h，copy 到 dependency/

13.'os/linker_set.h' file not found

在 xnu/bsd/sys/ 目录下找到 linker_set.h，copy 到 dependency/os/

14.'_simple.h' file not found

在 libclosure/ 目录下找到 Block_private.h，copy到dependency/

15.'kern/restartable.h' file not found

在 xnu/osfmk/kern/ 目录下找到 restartable.h，copy 到 copy到dependency/kern/

16.'os/reason_private.h' file not found

在 xnu/libkern/os/ 目录下找到 reason_private.h，copy 到 dependency/os/

17.'os/variant_private.h' file not found

在 Libc/os/ 目录下找到 variant_private.h，copy 到 dependency/os/

修复编译错误

1.'os/feature_private.h' file not found

直接注释此头文件的引用

2.dyld_priv.h中，error: expected ',' extern bool dyld_sdk_at_least(const struct mach_header* mh, dyld_build_version_t version) __API_AVAILABLE(macos(10.14), ios(12.0), watchos(5.0), tvos(12.0), bridgeos(3.0));

删除dyld_priv.h的所有的bridgeos(3.0)，包括前面的','号。

3.lock_private.h 中 error: expected ',' tvos(13.0), watchos(6.0), bridgeos(4.0)) = 0x00040000

删除bridgeos(4.0)

4.variant_private.h 文件中报 error: expected ',' API_AVAILABLE(macosx(10.16)) API_UNAVAILABLE(ios, tvos, watchos, bridgeos)

OS_EXPORT OS_WARN_RESULT

删除variant_private.h中所有的bridgeos(4.0)以及bridgeos相关内容

os/lock_private.h:34:1 '#pragma clang assume_nonnull' was not ended within this file

注释掉OS_ASSUME_NONNULL_BEGIN

6./Users/doctorgg/Documents/技术/objc4/objc4-906/objc4-main/dependency/os/lock_private.h:579:2 Embedding a #include directive within macro arguments is not supported

7.Use of undeclared identifier 'dyld_platform_version_macOS_10_13'

直接注释掉该处代码：

erlang 复制代码

if (!dyld_program_sdk_at_least(dyld_platform_version_macOS_10_13)) {

    DisableInitializeForkSafety = On;

    if (PrintInitializing) {

        _objc_inform("INITIALIZE: disabling +initialize fork "

            "safety enforcement because the app is "

        "too old.)");

}

8.Use of undeclared identifier 'dyld_fall_2020_os_versions'

直接注释掉相关代码即可 9.'sandbox/private.h' file not found

直接注释掉相关引用即可 10.Use of undeclared identifier 'CRGetCrashLogMessage'

直接注释相关代码即可

11.Use of undeclared identifier 'SANDBOX_FILTER_PATH'

直接注释相关代码即可

12.'Cambria/Traps.h' file not found

直接注释掉引用

13.'Cambria/Cambria.h' file not found

直接注释掉引用

14.Use of undeclared identifier 'oah_is_current_process_translated'

直接注释相关代码，如下

ini 复制代码

// 修改前

if (oah_is_current_process_translated()) {

    kern_return_t ret = objc_thread_get_rip(threads[count], (uint64_t*)&pc);

    if (ret != KERN_SUCCESS) {

    pc = PC_SENTINEL;

    }

} else {

    pc = _get_pc_for_thread (threads[count]);

}

// 修改后

pc = _get_pc_for_thread (threads[count]);

15.Use of undeclared identifier 'objc4'

注释掉相关代码：

ini 复制代码

if (!os_feature_enabled_simple(objc4, preoptimizedCaches, true)) {

    DisablePreoptCaches = On;

}

16.Use of undeclared identifier 'dyld_platform_version_macOS_10_11'

注释掉相关代码：

scss 复制代码

if (dyld_get_active_platform() == PLATFORM_MACOS && !dyld_program_sdk_at_least(dyld_platform_version_macOS_10_11)) {

    DisableNonpointerIsa = On;

    if (PrintRawIsa) {

        _objc_inform("RAW ISA: disabling non-pointer isa because "

        "the app is too old.");

    }

}

17.'_static_assert' declared as an array with a negative size

注释掉相关代码

scss 复制代码

STATIC_ASSERT((~ISA_MASK & OBJC_VM_MAX_ADDRESS) == 0 ||

ISA_MASK + sizeof(void*) == OBJC_VM_MAX_ADDRESS);

18.Use of undeclared identifier 'dyld_fall_2018_os_versions'

注释掉相关引用

19.'os/feature_private.h' file not found

注释掉相关引用

20.'os/log_simple_private.h' file not found

注释掉相关引用

21.Use of undeclared identifier 'os_log_simple'

注释掉相关代码

scss 复制代码

os_log_simple("Large Autorelease Pool");

22.Use of undeclared identifier 'dyld_platform_version_bridgeOS_2_0'，Use of undeclared identifier 'dyld_platform_version_iOS_10_0'，Use of undeclared identifier 'dyld_platform_version_macOS_10_12'，Use of undeclared identifier 'dyld_platform_version_tvOS_10_0'，Use of undeclared identifier 'dyld_platform_version_watchOS_3_0'

直接修改此段代码中的sdkIsAtLeast的使用

ini 复制代码

// 修改前

bool willTerminate = (DebugPoolAllocation == Fatal

|| sdkIsAtLeast(10_12, 10_0, 10_0, 3_0, 2_0));

// 修改后

bool willTerminate = (DebugPoolAllocation == Fatal);

23.library not found for -lCrashReporterClient

在 objc 这个 target 的 Build Settings 中，搜索Other Linker Flags，然后在其中删除-lCrashReporterClient

24.library not found for -loah

在 objc 这个 target 的 Build Settings 中，搜索 Other Linker Flags，然后在其中删除 -loah

Nice！！！编译成功

创建调试target

在编译成功以后，添加一个可供调试的target。如图所示!

接着添加依赖库

可调试源码

最后附上已经配置完成，可以正常调试的代码： github.com/MrOwlSage/o...