mac上将c语言文件编译成arm64架构文件

本文编译的文件cpu架构为arm64。

预编译
使用xcrun命令预编译c文件。
xcrun -sdk iphoneos clang -arch arm64 -E -o a.c main.m

查看预编译后的a.c文件

# 1 "main.m"
# 1 "<built-in>" 1
# 1 "<built-in>" 3
# 388 "<built-in>" 3
# 1 "<command line>" 1
# 1 "<built-in>" 2
# 1 "main.m" 2




# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/stdio.h" 1 3 4
# 64 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/stdio.h" 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/_stdio.h" 1 3 4
# 68 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/_stdio.h" 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/cdefs.h" 1 3 4
# 608 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/cdefs.h" 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_symbol_aliasing.h" 1 3 4
# 609 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/cdefs.h" 2 3 4
# 674 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/cdefs.h" 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_posix_availability.h" 1 3 4
# 675 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/cdefs.h" 2 3 4
# 69 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/_stdio.h" 2 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/Availability.h" 1 3 4
# 242 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/Availability.h" 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/AvailabilityInternal.h" 1 3 4
# 243 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/Availability.h" 2 3 4
# 70 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/_stdio.h" 2 3 4

# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/_types.h" 1 3 4
# 27 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/_types.h" 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types.h" 1 3 4
# 33 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types.h" 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/machine/_types.h" 1 3 4
# 32 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/machine/_types.h" 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/arm/_types.h" 1 3 4
# 13 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/arm/_types.h" 3 4
typedef signed char __int8_t;



typedef unsigned char __uint8_t;
typedef short __int16_t;
typedef unsigned short __uint16_t;
typedef int __int32_t;
typedef unsigned int __uint32_t;
typedef long long __int64_t;
typedef unsigned long long __uint64_t;

typedef long __darwin_intptr_t;
typedef unsigned int __darwin_natural_t;
# 46 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/arm/_types.h" 3 4
typedef int __darwin_ct_rune_t;





typedef union {
 char __mbstate8[128];
 long long _mbstateL;
} __mbstate_t;

typedef __mbstate_t __darwin_mbstate_t;


typedef long int __darwin_ptrdiff_t;







typedef long unsigned int __darwin_size_t;





typedef __builtin_va_list __darwin_va_list;





typedef int __darwin_wchar_t;




typedef __darwin_wchar_t __darwin_rune_t;


typedef int __darwin_wint_t;




typedef unsigned long __darwin_clock_t;
typedef __uint32_t __darwin_socklen_t;
typedef long __darwin_ssize_t;
typedef long __darwin_time_t;
# 33 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/machine/_types.h" 2 3 4
# 34 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types.h" 2 3 4
# 55 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types.h" 3 4
typedef __int64_t __darwin_blkcnt_t;
typedef __int32_t __darwin_blksize_t;
typedef __int32_t __darwin_dev_t;
typedef unsigned int __darwin_fsblkcnt_t;
typedef unsigned int __darwin_fsfilcnt_t;
typedef __uint32_t __darwin_gid_t;
typedef __uint32_t __darwin_id_t;
typedef __uint64_t __darwin_ino64_t;

typedef __darwin_ino64_t __darwin_ino_t;



typedef __darwin_natural_t __darwin_mach_port_name_t;
typedef __darwin_mach_port_name_t __darwin_mach_port_t;
typedef __uint16_t __darwin_mode_t;
typedef __int64_t __darwin_off_t;
typedef __int32_t __darwin_pid_t;
typedef __uint32_t __darwin_sigset_t;
typedef __int32_t __darwin_suseconds_t;
typedef __uint32_t __darwin_uid_t;
typedef __uint32_t __darwin_useconds_t;
typedef unsigned char __darwin_uuid_t[16];
typedef char __darwin_uuid_string_t[37];


# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_pthread/_pthread_types.h" 1 3 4
# 57 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_pthread/_pthread_types.h" 3 4
struct __darwin_pthread_handler_rec {
 void (*__routine)(void *);
 void *__arg;
 struct __darwin_pthread_handler_rec *__next;
};

struct _opaque_pthread_attr_t {
 long __sig;
 char __opaque[56];
};

struct _opaque_pthread_cond_t {
 long __sig;
 char __opaque[40];
};

struct _opaque_pthread_condattr_t {
 long __sig;
 char __opaque[8];
};

struct _opaque_pthread_mutex_t {
 long __sig;
 char __opaque[56];
};

struct _opaque_pthread_mutexattr_t {
 long __sig;
 char __opaque[8];
};

struct _opaque_pthread_once_t {
 long __sig;
 char __opaque[8];
};

struct _opaque_pthread_rwlock_t {
 long __sig;
 char __opaque[192];
};

struct _opaque_pthread_rwlockattr_t {
 long __sig;
 char __opaque[16];
};

struct _opaque_pthread_t {
 long __sig;
 struct __darwin_pthread_handler_rec *__cleanup_stack;
 char __opaque[8176];
};

typedef struct _opaque_pthread_attr_t __darwin_pthread_attr_t;
typedef struct _opaque_pthread_cond_t __darwin_pthread_cond_t;
typedef struct _opaque_pthread_condattr_t __darwin_pthread_condattr_t;
typedef unsigned long __darwin_pthread_key_t;
typedef struct _opaque_pthread_mutex_t __darwin_pthread_mutex_t;
typedef struct _opaque_pthread_mutexattr_t __darwin_pthread_mutexattr_t;
typedef struct _opaque_pthread_once_t __darwin_pthread_once_t;
typedef struct _opaque_pthread_rwlock_t __darwin_pthread_rwlock_t;
typedef struct _opaque_pthread_rwlockattr_t __darwin_pthread_rwlockattr_t;
typedef struct _opaque_pthread_t *__darwin_pthread_t;
# 81 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types.h" 2 3 4
# 28 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/_types.h" 2 3 4
# 40 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/_types.h" 3 4
typedef int __darwin_nl_item;
typedef int __darwin_wctrans_t;

typedef __uint32_t __darwin_wctype_t;
# 72 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/_stdio.h" 2 3 4


# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_va_list.h" 1 3 4
# 31 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_va_list.h" 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/machine/types.h" 1 3 4
# 35 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/machine/types.h" 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/arm/types.h" 1 3 4
# 52 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/arm/types.h" 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_int8_t.h" 1 3 4
# 30 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_int8_t.h" 3 4
typedef signed char int8_t;
# 53 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/arm/types.h" 2 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_int16_t.h" 1 3 4
# 30 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_int16_t.h" 3 4
typedef short int16_t;
# 54 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/arm/types.h" 2 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_int32_t.h" 1 3 4
# 30 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_int32_t.h" 3 4
typedef int int32_t;
# 55 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/arm/types.h" 2 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_int64_t.h" 1 3 4
# 30 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_int64_t.h" 3 4
typedef long long int64_t;
# 56 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/arm/types.h" 2 3 4

# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_u_int8_t.h" 1 3 4
# 30 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_u_int8_t.h" 3 4
typedef unsigned char u_int8_t;
# 58 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/arm/types.h" 2 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_u_int16_t.h" 1 3 4
# 30 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_u_int16_t.h" 3 4
typedef unsigned short u_int16_t;
# 59 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/arm/types.h" 2 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_u_int32_t.h" 1 3 4
# 30 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_u_int32_t.h" 3 4
typedef unsigned int u_int32_t;
# 60 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/arm/types.h" 2 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_u_int64_t.h" 1 3 4
# 30 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_u_int64_t.h" 3 4
typedef unsigned long long u_int64_t;
# 61 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/arm/types.h" 2 3 4


typedef int64_t register_t;


# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_intptr_t.h" 1 3 4
# 30 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_intptr_t.h" 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/machine/types.h" 1 3 4
# 31 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_intptr_t.h" 2 3 4

typedef __darwin_intptr_t intptr_t;
# 69 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/arm/types.h" 2 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_uintptr_t.h" 1 3 4
# 30 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_uintptr_t.h" 3 4
typedef unsigned long uintptr_t;
# 70 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/arm/types.h" 2 3 4


typedef u_int64_t user_addr_t;
typedef u_int64_t user_size_t;
typedef int64_t user_ssize_t;
typedef int64_t user_long_t;
typedef u_int64_t user_ulong_t;
typedef int64_t user_time_t;
typedef int64_t user_off_t;
# 101 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/arm/types.h" 3 4
typedef u_int64_t syscall_arg_t;
# 36 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/machine/types.h" 2 3 4
# 32 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_va_list.h" 2 3 4
typedef __darwin_va_list va_list;
# 76 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/_stdio.h" 2 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_size_t.h" 1 3 4
# 31 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_size_t.h" 3 4
typedef __darwin_size_t size_t;
# 77 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/_stdio.h" 2 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_null.h" 1 3 4
# 78 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/_stdio.h" 2 3 4

# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/stdio.h" 1 3 4
# 39 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/stdio.h" 3 4
int renameat(int, const char *, int, const char *) __attribute__((availability(ios,introduced=8.0)));


int renamex_np(const char *, const char *, unsigned int) __attribute__((availability(macosx,introduced=10.12))) __attribute__((availability(ios,introduced=10.0))) __attribute__((availability(tvos,introduced=10.0))) __attribute__((availability(watchos,introduced=3.0)));
int renameatx_np(int, const char *, int, const char *, unsigned int) __attribute__((availability(macosx,introduced=10.12))) __attribute__((availability(ios,introduced=10.0))) __attribute__((availability(tvos,introduced=10.0))) __attribute__((availability(watchos,introduced=3.0)));
# 80 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/_stdio.h" 2 3 4

typedef __darwin_off_t fpos_t;
# 92 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/_stdio.h" 3 4
struct __sbuf {
 unsigned char *_base;
 int _size;
};


struct __sFILEX;
# 126 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/_stdio.h" 3 4
typedef struct __sFILE {
 unsigned char *_p;
 int _r;
 int _w;
 short _flags;
 short _file;
 struct __sbuf _bf;
 int _lbfsize;

 void *_cookie;
 int (* _Nullable _close)(void *);
 int (* _Nullable _read) (void *, char *, int);
 fpos_t (* _Nullable _seek) (void *, fpos_t, int);
 int (* _Nullable _write)(void *, const char *, int);


 struct __sbuf _ub;
 struct __sFILEX *_extra;
 int _ur;


 unsigned char _ubuf[3];
 unsigned char _nbuf[1];


 struct __sbuf _lb;


 int _blksize;
 fpos_t _offset;
} FILE;
# 65 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/stdio.h" 2 3 4


extern FILE *__stdinp;
extern FILE *__stdoutp;
extern FILE *__stderrp;
# 142 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/stdio.h" 3 4
void clearerr(FILE *);
int fclose(FILE *);
int feof(FILE *);
int ferror(FILE *);
int fflush(FILE *);
int fgetc(FILE *);
int fgetpos(FILE * restrict, fpos_t *);
char *fgets(char * restrict, int, FILE *);


FILE *fopen(const char * restrict __filename, const char * restrict __mode) __asm("_" "fopen" );

int fprintf(FILE * restrict, const char * restrict, ...) __attribute__((__format__ (__printf__, 2, 3)));
int fputc(int, FILE *);
int fputs(const char * restrict, FILE * restrict) __asm("_" "fputs" );
size_t fread(void * restrict __ptr, size_t __size, size_t __nitems, FILE * restrict __stream);
FILE *freopen(const char * restrict, const char * restrict,
                 FILE * restrict) __asm("_" "freopen" );
int fscanf(FILE * restrict, const char * restrict, ...) __attribute__((__format__ (__scanf__, 2, 3)));
int fseek(FILE *, long, int);
int fsetpos(FILE *, const fpos_t *);
long ftell(FILE *);
size_t fwrite(const void * restrict __ptr, size_t __size, size_t __nitems, FILE * restrict __stream) __asm("_" "fwrite" );
int getc(FILE *);
int getchar(void);
char *gets(char *);
void perror(const char *);
int printf(const char * restrict, ...) __attribute__((__format__ (__printf__, 1, 2)));
int putc(int, FILE *);
int putchar(int);
int puts(const char *);
int remove(const char *);
int rename (const char *__old, const char *__new);
void rewind(FILE *);
int scanf(const char * restrict, ...) __attribute__((__format__ (__scanf__, 1, 2)));
void setbuf(FILE * restrict, char * restrict);
int setvbuf(FILE * restrict, char * restrict, int, size_t);
int sprintf(char * restrict, const char * restrict, ...) __attribute__((__format__ (__printf__, 2, 3))) __attribute__((__availability__(swift, unavailable, message="Use snprintf instead.")));
int sscanf(const char * restrict, const char * restrict, ...) __attribute__((__format__ (__scanf__, 2, 3)));
FILE *tmpfile(void);

__attribute__((__availability__(swift, unavailable, message="Use mkstemp(3) instead.")))

__attribute__((deprecated("This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of tmpnam(3), it is highly recommended that you use mkstemp(3) instead.")))

char *tmpnam(char *);
int ungetc(int, FILE *);
int vfprintf(FILE * restrict, const char * restrict, va_list) __attribute__((__format__ (__printf__, 2, 0)));
int vprintf(const char * restrict, va_list) __attribute__((__format__ (__printf__, 1, 0)));
int vsprintf(char * restrict, const char * restrict, va_list) __attribute__((__format__ (__printf__, 2, 0))) __attribute__((__availability__(swift, unavailable, message="Use vsnprintf instead.")));
# 208 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/stdio.h" 3 4
char *ctermid(char *);


FILE *fdopen(int, const char *) __asm("_" "fdopen" );

int fileno(FILE *);
# 232 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/stdio.h" 3 4
int pclose(FILE *) __attribute__((__availability__(swift, unavailable, message="Use posix_spawn APIs or NSTask instead.")));


FILE *popen(const char *, const char *) __asm("_" "popen" ) __attribute__((__availability__(swift, unavailable, message="Use posix_spawn APIs or NSTask instead.")));
# 253 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/stdio.h" 3 4
int __srget(FILE *);
int __svfscanf(FILE *, const char *, va_list) __attribute__((__format__ (__scanf__, 2, 0)));
int __swbuf(int, FILE *);
# 264 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/stdio.h" 3 4
inline __attribute__ ((__always_inline__)) int __sputc(int _c, FILE *_p) {
 if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
  return (*_p->_p++ = _c);
 else
  return (__swbuf(_c, _p));
}
# 290 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/stdio.h" 3 4
void flockfile(FILE *);
int ftrylockfile(FILE *);
void funlockfile(FILE *);
int getc_unlocked(FILE *);
int getchar_unlocked(void);
int putc_unlocked(int, FILE *);
int putchar_unlocked(int);

int getw(FILE *);
int putw(int, FILE *);

__attribute__((__availability__(swift, unavailable, message="Use mkstemp(3) instead.")))

__attribute__((deprecated("This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of tempnam(3), it is highly recommended that you use mkstemp(3) instead.")))

char *tempnam(const char *__dir, const char *__prefix) __asm("_" "tempnam" );
# 328 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/stdio.h" 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_off_t.h" 1 3 4
# 31 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_off_t.h" 3 4
typedef __darwin_off_t off_t;
# 329 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/stdio.h" 2 3 4


int fseeko(FILE * __stream, off_t __offset, int __whence);
off_t ftello(FILE * __stream);


int snprintf(char * restrict __str, size_t __size, const char * restrict __format, ...) __attribute__((__format__ (__printf__, 3, 4)));
int vfscanf(FILE * restrict __stream, const char * restrict __format, va_list) __attribute__((__format__ (__scanf__, 2, 0)));
int vscanf(const char * restrict __format, va_list) __attribute__((__format__ (__scanf__, 1, 0)));
int vsnprintf(char * restrict __str, size_t __size, const char * restrict __format, va_list) __attribute__((__format__ (__printf__, 3, 0)));
int vsscanf(const char * restrict __str, const char * restrict __format, va_list) __attribute__((__format__ (__scanf__, 2, 0)));
# 353 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/stdio.h" 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_ssize_t.h" 1 3 4
# 31 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/sys/_types/_ssize_t.h" 3 4
typedef __darwin_ssize_t ssize_t;
# 354 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/stdio.h" 2 3 4


int dprintf(int, const char * restrict, ...) __attribute__((__format__ (__printf__, 2, 3))) __attribute__((availability(ios,introduced=4.3)));
int vdprintf(int, const char * restrict, va_list) __attribute__((__format__ (__printf__, 2, 0))) __attribute__((availability(ios,introduced=4.3)));
ssize_t getdelim(char ** restrict __linep, size_t * restrict __linecapp, int __delimiter, FILE * restrict __stream) __attribute__((availability(ios,introduced=4.3)));
ssize_t getline(char ** restrict __linep, size_t * restrict __linecapp, FILE * restrict __stream) __attribute__((availability(ios,introduced=4.3)));
FILE *fmemopen(void * restrict __buf, size_t __size, const char * restrict __mode) __attribute__((availability(macos,introduced=10.13))) __attribute__((availability(ios,introduced=11.0))) __attribute__((availability(tvos,introduced=11.0))) __attribute__((availability(watchos,introduced=4.0)));
FILE *open_memstream(char **__bufp, size_t *__sizep) __attribute__((availability(macos,introduced=10.13))) __attribute__((availability(ios,introduced=11.0))) __attribute__((availability(tvos,introduced=11.0))) __attribute__((availability(watchos,introduced=4.0)));
# 371 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/stdio.h" 3 4
extern const int sys_nerr;
extern const char *const sys_errlist[];

int asprintf(char ** restrict, const char * restrict, ...) __attribute__((__format__ (__printf__, 2, 3)));
char *ctermid_r(char *);
char *fgetln(FILE *, size_t *);
const char *fmtcheck(const char *, const char *);
int fpurge(FILE *);
void setbuffer(FILE *, char *, int);
int setlinebuf(FILE *);
int vasprintf(char ** restrict, const char * restrict, va_list) __attribute__((__format__ (__printf__, 2, 0)));
FILE *zopen(const char *, const char *, int);


FILE *funopen(const void *,
                 int (* _Nullable)(void *, char *, int),
                 int (* _Nullable)(void *, const char *, int),
                 fpos_t (* _Nullable)(void *, fpos_t, int),
                 int (* _Nullable)(void *));
# 411 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/stdio.h" 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/secure/_stdio.h" 1 3 4
# 31 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/secure/_stdio.h" 3 4
# 1 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/secure/_common.h" 1 3 4
# 32 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/secure/_stdio.h" 2 3 4
# 42 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/secure/_stdio.h" 3 4
extern int __sprintf_chk (char * restrict, int, size_t,
     const char * restrict, ...);
# 52 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/secure/_stdio.h" 3 4
extern int __snprintf_chk (char * restrict, size_t, int, size_t,
      const char * restrict, ...);


extern int __vsprintf_chk (char * restrict, int, size_t,
      const char * restrict, va_list);

extern int __vsnprintf_chk (char * restrict, size_t, int, size_t,
       const char * restrict, va_list);
# 412 "/Volumes/mac/Users/mac/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.4.sdk/usr/include/stdio.h" 2 3 4
# 6 "main.m" 2

void sum(int x, int y) {

    int sum = x + y;
    printf("sum = %d\n",sum);
}


int main() {
    sum(1, 10);
}

编译
xcrun -sdk iphoneos clang -arch arm64 -S -o a.s main.m

查看编译后的a.s文件（此处生成的是arm64架构的）：

    .section    __TEXT,__text,regular,pure_instructions
    .build_version ios, 12, 4   sdk_version 12, 4
    .globl  _sum                    ; -- Begin function sum
    .p2align    2
_sum:                                   ; @sum
    .cfi_startproc
; %bb.0:
    sub sp, sp, #48             ; =48
    stp x29, x30, [sp, #32]     ; 8-byte Folded Spill
    add x29, sp, #32            ; =32
    .cfi_def_cfa w29, 16
    .cfi_offset w30, -8
    .cfi_offset w29, -16
    stur    w0, [x29, #-4]
    stur    w1, [x29, #-8]
    ldur    w0, [x29, #-4]
    ldur    w1, [x29, #-8]
    add w0, w0, w1
    stur    w0, [x29, #-12]
    ldur    w0, [x29, #-12]
                                        ; implicit-def: $x2
    mov x2, x0
    mov x8, sp
    str x2, [x8]
    adrp    x0, l_.str@PAGE
    add x0, x0, l_.str@PAGEOFF
    bl  _printf
    str w0, [sp, #16]           ; 4-byte Folded Spill
    ldp x29, x30, [sp, #32]     ; 8-byte Folded Reload
    add sp, sp, #48             ; =48
    ret
    .cfi_endproc
                                        ; -- End function
    .globl  _main                   ; -- Begin function main
    .p2align    2
_main:                                  ; @main
    .cfi_startproc
; %bb.0:
    stp x29, x30, [sp, #-16]!   ; 8-byte Folded Spill
    mov x29, sp
    .cfi_def_cfa w29, 16
    .cfi_offset w30, -8
    .cfi_offset w29, -16
    orr w0, wzr, #0x1
    mov w1, #10
    bl  _sum
    mov w0, #0
    ldp x29, x30, [sp], #16     ; 8-byte Folded Reload
    ret
    .cfi_endproc
                                        ; -- End function
    .section    __TEXT,__cstring,cstring_literals
l_.str:                                 ; @.str
    .asciz  "sum = %d\n"

    .section    __DATA,__objc_imageinfo,regular,no_dead_strip
L_OBJC_IMAGE_INFO:
    .long   0
    .long   64


.subsections_via_symbols

汇编
xcrun -sdk iphoneos clang -arch arm64 -c -o a.o main.m

查看.o文件

链接
xcrun -sdk iphoneos clang -arch arm64 -o a.out a.o
此命令执行完成后会产生一个a.out的可执行文件。

xcrun -sdk iphoneos clang -arch arm64 -o hello a.o
生成exe可执行文件

查看.out文件

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mac上将c语言文件编译成arm64架构文件

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