在没有越狱iphone的情况下，它的代码能工作吗？

我明白了

collect2:ld返回了1个退出状态 usr/bin/g++4.2失败，退出代码为1

     #import <stdio.h>
#import <string.h>
#import <mach/mach_host.h>
#import <sys/sysctl.h>

#include <CoreFoundation/CoreFoundation.h>
#include <IOKit/ps/IOPowerSources.h>
#include <IOKit/ps/IOPSKeys.h>

#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>

void printMemoryInfo()
{
size_t length;
int mib[6];
int result;

printf("Memory Info\n");
printf("-----------\n");

int pagesize;
mib[0] = CTL_HW;
mib[1] = HW_PAGESIZE;
length = sizeof(pagesize);
if (sysctl(mib, 2, &pagesize, &length, NULL, 0) < 0)
{
perror("getting page size");
}
printf("Page size = %d bytes\n", pagesize);
printf("\n");

mach_msg_type_number_t count = HOST_VM_INFO_COUNT;

vm_statistics_data_t vmstat;
if (host_statistics(mach_host_self(), HOST_VM_INFO, (host_info_t)&vmstat, &count) != KERN_SUCCESS)
{
printf("Failed to get VM statistics.");
}

double total = vmstat.wire_count + vmstat.active_count + vmstat.inactive_count + vmstat.free_count;
double wired = vmstat.wire_count / total;
double active = vmstat.active_count / total;
double inactive = vmstat.inactive_count / total;
double free = vmstat.free_count / total;

printf("Total = %8d pages\n", vmstat.wire_count + vmstat.active_count + vmstat.inactive_count + vmstat.free_count);
printf("\n");
printf("Wired = %8d bytes\n", vmstat.wire_count * pagesize);
printf("Active = %8d bytes\n", vmstat.active_count * pagesize);
printf("Inactive = %8d bytes\n", vmstat.inactive_count * pagesize);
printf("Free = %8d bytes\n", vmstat.free_count * pagesize);
printf("\n");
printf("Total = %8d bytes\n", (vmstat.wire_count + vmstat.active_count + vmstat.inactive_count + vmstat.free_count) * pagesize);
printf("\n");
printf("Wired = %0.2f %%\n", wired * 100.0);
printf("Active = %0.2f %%\n", active * 100.0);
printf("Inactive = %0.2f %%\n", inactive * 100.0);
printf("Free = %0.2f %%\n", free * 100.0);
printf("\n");

mib[0] = CTL_HW;
mib[1] = HW_PHYSMEM;
length = sizeof(result);
if (sysctl(mib, 2, &result, &length, NULL, 0) < 0)
{
perror("getting physical memory");
}
printf("Physical memory = %8d bytes\n", result);
mib[0] = CTL_HW;
mib[1] = HW_USERMEM;
length = sizeof(result);
if (sysctl(mib, 2, &result, &length, NULL, 0) < 0)
{
perror("getting user memory");
}
printf("User memory = %8d bytes\n", result);
printf("\n");
}

void printProcessorInfo()
{
size_t length;
int mib[6];
int result;

printf("Processor Info\n");
printf("--------------\n");

mib[0] = CTL_HW;
mib[1] = HW_CPU_FREQ;
length = sizeof(result);
if (sysctl(mib, 2, &result, &length, NULL, 0) < 0)
{
perror("getting cpu frequency");
}
printf("CPU Frequency = %d hz\n", result);

mib[0] = CTL_HW;
mib[1] = HW_BUS_FREQ;
length = sizeof(result);
if (sysctl(mib, 2, &result, &length, NULL, 0) < 0)
{
perror("getting bus frequency");
}
printf("Bus Frequency = %d hz\n", result);
printf("\n");
}

int printBatteryInfo()
{
CFTypeRef blob = IOPSCopyPowerSourcesInfo();
CFArrayRef sources = IOPSCopyPowerSourcesList(blob);

CFDictionaryRef pSource = NULL;
const void *psValue;

int numOfSources = CFArrayGetCount(sources);
if (numOfSources == 0) {
perror("Error getting battery info");
return 1;
}

printf("Battery Info\n");
printf("------------\n");

for (int i = 0 ; i < numOfSources ; i++)
{
pSource = IOPSGetPowerSourceDescription(blob, CFArrayGetValueAtIndex(sources, i));
if (!pSource) {
perror("Error getting battery info");
return 2;
}
psValue = (CFStringRef)CFDictionaryGetValue(pSource, CFSTR(kIOPSNameKey));

int curCapacity = 0;
int maxCapacity = 0;
int percent;

psValue = CFDictionaryGetValue(pSource, CFSTR(kIOPSCurrentCapacityKey));
CFNumberGetValue((CFNumberRef)psValue, kCFNumberSInt32Type, &curCapacity);

psValue = CFDictionaryGetValue(pSource, CFSTR(kIOPSMaxCapacityKey));
CFNumberGetValue((CFNumberRef)psValue, kCFNumberSInt32Type, &maxCapacity);

percent = (int)((double)curCapacity/(double)maxCapacity * 100);

printf ("powerSource %d of %d: percent: %d/%d = %d%%\n", i+1, CFArrayGetCount(sources), curCapacity, maxCapacity, percent);
printf("\n");

}

}

int printProcessInfo() {
int mib[5];
struct kinfo_proc *procs = NULL, *newprocs;
int i, st, nprocs;
size_t miblen, size;

/* Set up sysctl MIB */
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_ALL;
mib[3] = 0;
miblen = 4;

/* Get initial sizing */
st = sysctl(mib, miblen, NULL, &size, NULL, 0);

/* Repeat until we get them all ... */
do {
/* Room to grow */
size += size / 10;
newprocs = realloc(procs, size);
if (!newprocs) {
if (procs) {
free(procs);
}
perror("Error: realloc failed.");
return (0);
}
procs = newprocs;
st = sysctl(mib, miblen, procs, &size, NULL, 0);
} while (st == -1 && errno == ENOMEM);

if (st != 0) {
perror("Error: sysctl(KERN_PROC) failed.");
return (0);
}

/* Do we match the kernel? */
assert(size % sizeof(struct kinfo_proc) == 0);

nprocs = size / sizeof(struct kinfo_proc);

if (!nprocs) {
perror("Error: printProcessInfo.");
return(0);
}
printf(" PID\tName\n");
printf("-----\t--------------\n");
for (i = nprocs-1; i >=0; i--) {
printf("%5d\t%s\n",(int)procs[i].kp_proc.p_pid, procs[i].kp_proc.p_comm);
}
free(procs);
return (0);
}

int main(int argc, char **argv)
{
printf("iPhone Hardware Info\n");
printf("====================\n");
printf("\n");

printMemoryInfo();
printProcessorInfo();
printBatteryInfo();
printProcessInfo();
return (0);
         }

---

不会。iPhone SDK不包括IOKit作为默认标题搜索路径的一部分，因此使用IOKit的应用不太可能被批准用于应用商店。如果您手动查找并链接IOKit，它可以在模拟器中工作，但为设备编译IOKit的30秒尝试失败