心心念念查看了下objc4源码 opensource.apple.com/releases/ ，果然更新了，果断编译调试
如果想最省时省力，直接 github 下载可编译源码
下面开始配置可编译环境（本次配置为M1）
首先确保下载到841.13源码
首先编译target objc
- unable to find sdk 'macosx.internal'
PROJECTS–>objc–>Build Settings, 将Base SDK改成macOSTARGETS–>objc–>Build Settings, 将Base SDK改成macOS
- 'sys/reson.h' file not found
- 下载xnu-8020.101.4, 把
xnu-8020.101.4/bsd/sys/reason.h文件复制到comm_ifl/sys目录下
- 设置头文件搜索路径：
TARGETS–>objc–>Build Settings–>Header Search Paths, 添加一条$(SRCROOT)/comm_ifl
- 'mach-o/dyld_priv.h' file not found
- 下载 dyld-955, 把
dyld-955/include/mach-o/dyld_priv.h拷贝到comm_ifl/mach-o/dyld_priv.h
- 'os/lock_private.h' file not found
- 下载 libplatform-273.100.5， 把
libplatform-273.100.5/private/os/lock_private.h拷贝到comm_ifl/os/lock_private.h
- 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)); ---- 报错 Expected ','
- 由于调试主要基于macos，删除
, bridgeos(3.0)
- 同5
- 同样均删除掉
, bridgeos(3.0)
- 'os/base_private.h' file not found
- 下载源码（macOS Catalina 10.15 - macOS 10.15.6）libplatform-220.100.1, 把
libplatform-220.100.1/private/os/base_private拷贝到comm_ifl/os/base_private.h
- 'pthread/tsd_private.h' file not found
- 下载 libpthread-libpthread-486.100.11
libpthread-libpthread-486.100.11/private/pthread/tsd_private.h拷贝到comm_ifl/pthread/tsd_private.h
- 'System/machine/cpu_capabilities.h' file not found
xnu-xnu-8020.101.4/osfmk/machine/cpu_capabilities.h拷贝到comm_ifl/System/machine/cpu_capabilities.h
- 'os/feature_private.h' file not found
- 注释掉
- 'os/variant_private.h' file not found
-
google搜索 os/variant_private.h opensource.apple.com
得到结果 opensource.apple.com/source/Libc… 根据路径找文件
-
拷贝
Libc-Libc-1507.100.9/os/variant_private.h至comm_ifl/os/variant_private.h
- 'os/tsd.h' file not found
- 拷贝
xnu-xnu-8020.101.4/libsyscall/os/tsd.h至comm_ifl/os/tsd.h
- 'pthread/spinlock_private.h' file not found
- 拷贝
libpthread-libpthread-486.100.11/private/pthread/spinlock_private.h至comm_ifl/pthread/spinlock_private.h
- 'System/pthread_machdep.h' file not found
- 拷贝
Libc-825.24/pthreads/pthread_machdep.h至comm_ifl/System/pthread_machdep.h
- bridgeos(4.0) 问题
- 去除
- 'CrashReporterClient.h' file not found
- 拷贝
Libc-825.24/include/CrashReporterClient.h至comm_ifl/CrashReporterClient.h
- Typedef redefinition with different types ('int' vs 'volatile OSSpinLock' (aka 'volatile int'))
- 注释掉
- Use of undeclared identifier 'dyld_platform_version_macOS_10_13'
- 注释
- 'os/bsd.h' file not found
- 注释
- 'os/reason_private.h' file not found
- 拷贝
xnu-xnu-8020.101.4/libkern/os/reason_private.h至comm_ifl/os/reason_private.h
- 'objc-shared-cache.h' file not found
- 拷贝
dyld-dyld-955/include/objc-shared-cache.h至comm_ifl/objc-shared-cache.h
- 'os/linker_set.h' file not found
- 拷贝
Libc-Libc-1507.100.9/os/linker_set.h至comm_ifl/os/linker_set.h
- '_simple.h' file not found
- 拷贝
Libc-825.24/gen/_simple.h至comm_ifl/_simple.h
- dyld_program_sdk_at_least(dyld_fall_2020_os_versions)
- 注释掉
- Use of undeclared identifier 'objc4'
- 注释掉
- Use of undeclared identifier 'CRGetCrashLogMessage'
- 'Cambria/Traps.h Cambria/Cambria.h' file not found
- 注释
- 'kern/restartable.h' file not found
xnu-xnu-8020.101.4/osfmk/kern/restartable.h拷贝到comm_ifl/kern/restartable.h
- Use of undeclared identifier 'oah_is_current_process_translated'
- Block_private.h
libclosure-libclosure-79.1/Block_private.h拷贝到comm_ifl/Block_private.h
- Use of undeclared identifier 'os_parse_boot_arg_string'
- 注释掉
- Use of undeclared identifier 'dyld_platform_version_macOS_10_11'
- Use of undeclared identifier 'dyld_fall_2018_os_versions'
- 注释掉
- Use of undeclared identifier 'dyld_platform_version_macOS_10_12'
- '_static_assert' declared as an array with a negative size
- 注释
在 dyld_priv.h 文件顶部加入宏
#define DYLD_MACOSX_VERSION_10_11 0x000A0B00
#define DYLD_MACOSX_VERSION_10_12 0x000A0C00
#define DYLD_MACOSX_VERSION_10_13 0x000A0D00
#define DYLD_MACOSX_VERSION_10_14 0x000A0E00
CrashReporterClient异常
CrashReporterClient.h已经导入，还是报错 找不到
配置脚本
ld -loah报错
objc编译成功
接下来objc进行编译调试
- 新建target
- 建立依赖
编译调试target
- 下符号 alloc调试
进入源码 alloc
坚持到这一步，M1 objc调试环境OK，就恭喜了
