编译OC运行时¶
目录最新版本是objc4-723:https://opensource.apple.com/tarballs/objc4/objc4-723.tar.gz
另外需要下载的文件有:
https://opensource.apple.com/tarballs/Libc/Libc-825.40.1.tar.gz
https://opensource.apple.com/tarballs/dyld/dyld-421.1.tar.gz
https://opensource.apple.com/tarballs/libauto/libauto-187.tar.gz
https://opensource.apple.com/tarballs/libclosure/libclosure-67.tar.gz
https://opensource.apple.com/tarballs/libdispatch/libdispatch-913.30.4.tar.gz
https://opensource.apple.com/tarballs/libpthread/libpthread-301.30.1.tar.gz
https://opensource.apple.com/tarballs/xnu/xnu-4570.41.2.tar.gz
https://opensource.apple.com/tarballs/libplatform/libplatform-161.20.1.tar.gz
https://opensource.apple.com/tarballs/launchd/launchd-842.92.1.tar.gz
/Users/JokerAtBaoFeng/Desktop/objc4-723/runtime/objc-os.h:94:13: 'sys/reason.h' file not found¶
这个文件路径在xnu-4570.41.2/bsd/sys/reason.h
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/runtime/objc-os.h:102:13: 'mach-o/dyld_priv.h' file not found¶
这个文件路径在dyld-519.2.2/include/mach-o/dyld_priv.h
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/runtime/objc-os.h:104:13: 'os/lock_private.h' file not found¶
这个文件路径在libplatform-161.20.1/private/os/lock_private.h 另外还需要保留文件base_private.h
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/include/os/lockprivate.h:439:10: 'pthread/tsdprivate.h' file not found¶
这个文件路径在libpthread-301.30.1/private/tsd_private.h 另外还需要保留文件tsd_private.h,外层目录需要从private改为pthread
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/include/pthread/tsdprivate.h:52:10: 'System/machine/cpucapabilities.h' file not found¶
这个文件路径在xnu-4570.41.2/osfmk/machine/cpu_capabilities.h
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/include/pthread/tsd_private.h:56:10: 'os/tsd.h' file not found¶
这个文件路径在xnu-4570.41.2/libsyscall/os/tsd.h
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/include/pthread/tsdprivate.h:57:10: 'pthread/spinlockprivate.h' file not found¶
这个文件路径在libpthread-301.30.1/private/spinlock_private.h
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/runtime/objc-os.h:107:13: 'System/pthread_machdep.h' file not found¶
这个文件路径在应该在Libc中，但是较新版本的Libc里面没有这个文件，所以需要找老版本，这里在路径Libc-825.40.1/pthreads/pthread_machdep.h中找到了
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/runtime/objc-os.h:250:13: 'CrashReporterClient.h' file not found¶
这个文件的路径在Libc-825.40.1/include/CrashReporterClient.h
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/include/CrashReporterClient.h:40:15: 'CrashReporterClient.h' file not found¶
#ifndef _LIBC_CRASHREPORTERCLIENT_H
#define _LIBC_CRASHREPORTERCLIENT_H
#ifdef LIBC_NO_LIBCRASHREPORTERCLIENT
/* Fake the CrashReporterClient API */
#define CRGetCrashLogMessage() 0
#define CRSetCrashLogMessage(x) /* nothing */
#else /* !LIBC_NO_LIBCRASHREPORTERCLIENT */
/* Include the real CrashReporterClient.h */
#include_next <CrashReporterClient.h>
#endif /* !LIBC_NO_LIBCRASHREPORTERCLIENT */
#endif /* _LIBC_CRASHREPORTERCLIENT_H */
Build Settings->Preprocessor Macros，加入：LIBC_NO_LIBCRASHREPORTERCLIENT
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/runtime/objc-os.h:984:10: 'pthread/workqueue_private.h' file not found¶
这个文件的路径在libpthread-301.30.1/private/workqueue_private.h
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/include/pthread/workqueueprivate.h:34:10: 'pthread/qosprivate.h' file not found¶
这个文件的路径在libpthread-301.30.1/private/qos_private.h
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/include/pthread/qosprivate.h:29:10: 'sys/qosprivate.h' file not found¶
这个文件的路径在libpthread-301.30.1/sys/qos_private.h
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/runtime/objc-private.h:324:10: 'objc-shared-cache.h' file not found¶
这个文件的路径在dyld-519.2.2/include/objc-shared-cache.h
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/include/System/pthread_machdep.h:214:13: Typedef redefinition with different types ('int' vs 'volatile OSSpinLock' (aka 'volatile int'))¶
注释代得定义代码：
//typedef int pthread_lock_t;
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/runtime/objc-os.h:735:19: Use of undeclared identifier 'PTHREADPRIORITYFLAGSMASK'¶
在objc-os.h中添加头文件包含: #include <pthread/qos_private.h>
Static declaration of 'pthreadhasdirecttsd' follows non-static declaration¶
注释pthread_machdep.中的方法
//__inline__ static int
//_pthread_has_direct_tsd(void)
//{
//#if TARGET_IPHONE_SIMULATOR
// /* Simulator will use the host implementation, so bypass the macro that is in the target code */
// return 0;
//#elif defined(__ppc__)
// int *caps = (int *)_COMM_PAGE_CPU_CAPABILITIES;
// if (*caps & kFastThreadLocalStorage) {
// return 1;
// } else {
// return 0;
// }
//#else
// return 1;
//#endif
//}
Static declaration of 'pthreadsetspecific_direct' follows non-static declaration¶
注释pthread_machdep.中的方法
/* To be used with static constant keys only */
//__inline__ static int
//_pthread_setspecific_direct(unsigned long slot, void * val)
//{
//#if defined(__i386__)
//#if defined(__PIC__)
// __asm__("movl %1,%%gs:%0" : "=m" (*(void **)(slot * sizeof(void *))) : "rn" (val));
//#else
// __asm__("movl %1,%%gs:%0" : "=m" (*(void **)(slot * sizeof(void *))) : "ri" (val));
//#endif
//#elif defined(__x86_64__)
// /* PIC is free and cannot be disabled, even with: gcc -mdynamic-no-pic ... */
// __asm__("movq %1,%%gs:%0" : "=m" (*(void **)(slot * sizeof(void *))) : "rn" (val));
//#elif (defined(__arm__) && (defined(_ARM_ARCH_6) || defined(_ARM_ARCH_5)))
// void **__pthread_tsd;
//#if defined(__arm__) && defined(_ARM_ARCH_6)
// uintptr_t __pthread_tpid;
// __asm__("mrc p15, 0, %0, c13, c0, 3" : "=r" (__pthread_tpid));
// __pthread_tsd = (void**)(__pthread_tpid & ~0x3ul);
//#elif defined(__arm__) && defined(_ARM_ARCH_5)
// register uintptr_t __pthread_tpid asm ("r9");
// __pthread_tsd = (void**)__pthread_tpid;
//#endif
// __pthread_tsd[slot] = val;
//#else
//#error no _pthread_setspecific_direct implementation for this arch
//#endif
// return 0;
//}
Static declaration of 'pthreadgetspecific_direct' follows non-static declaration¶
注释pthread_machdep.中的方法
//__inline__ static void *
//_pthread_getspecific_direct(unsigned long slot)
//{
// void *ret;
//#if defined(__i386__) || defined(__x86_64__)
// __asm__("mov %%gs:%1, %0" : "=r" (ret) : "m" (*(void **)(slot * sizeof(void *))));
//#elif (defined(__arm__) && (defined(_ARM_ARCH_6) || defined(_ARM_ARCH_5)))
// void **__pthread_tsd;
//#if defined(__arm__) && defined(_ARM_ARCH_6)
// uintptr_t __pthread_tpid;
// __asm__("mrc p15, 0, %0, c13, c0, 3" : "=r" (__pthread_tpid));
// __pthread_tsd = (void**)(__pthread_tpid & ~0x3ul);
//#elif defined(__arm__) && defined(_ARM_ARCH_5)
// register uintptr_t __pthread_tpid asm ("r9");
// __pthread_tsd = (void**)__pthread_tpid;
//#endif
// ret = __pthread_tsd[slot];
//#else
//#error no _pthread_getspecific_direct implementation for this arch
//#endif
// return ret;
//}
Non-constant-expression cannot be narrowed from type 'uintptrt' (aka 'unsigned long') to 'uint32t' (aka 'unsigned int') in initializer list¶
按编译提示修复
static_cast<uint32_t>(mts)
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/runtime/objc-errors.mm:77:10: '_simple.h' file not found¶
这个文件在路径Libc-825.40.1/gen/_simple.h
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/runtime/objc-runtime-new.mm:2350:46: Use of undeclared identifier 'DYLDMACOSXVERSION1011'¶
需要使用dyld-421.1版本中的dyld_priv.h文件，并添加
#define DYLD_MACOSX_VERSION_10_13 0x000A0D00
/Users/JokerAtBaoFeng/Desktop/objc-runtime/objc4-723/runtime/objc-block-trampolines.mm:36:10: 'Block_private.h' file not found¶
这个文件的路径在：libclosure-67/Block_private.h
ld: can't open order file: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/AppleInternal/OrderFiles/libobjc.order¶
Build Settings->Linking->Order File，把Debug和Release下的
$(SDKROOT)/AppleInternal/OrderFiles/libobjc.order
改成
libobjc.order
clang: error: linker command failed with exit code 1 (use -v to see invocation)¶
只需要去Build Settings -> Linking -> Other Linker Flags里删掉"-lCrashReporterClient" （Debug 和 Release 都有的哦，需要删两个哦）