我正在尝试用C以编程方式获取Mac OS X的版本。在搜索了一段时间后,我尝试了以下代码:
#include <CoreServices/CoreServices.h>
int GetOS()
{
SInt32 majorVersion,minorVersion,bugFixVersion;
Gestalt(gestaltSystemVersionMajor, &majorVersion);
Gestalt(gestaltSystemVersionMinor, &minorVersion);
Gestalt(gestaltSystemVersionBugFix, &bugFixVersion);
printf("Running on Mac OS X %d.%d.%d\n",majorVersion,minorVersion,bugFixVersion);
return 0;
}
XCode返回LD错误:
Undefined symbols for architecture x86_64: "_Gestalt", referenced from: _GetOS in main.o
我遗漏了什么?您如何做到这一点?
我还发现了这个片段
[[NSProcessInfo processInfo] operatingSystemVersionString]
但是我不知道如何用C语言来写。
发布于 2011-05-12 03:29:15
您是否将适当的框架传递给了GCC以启用CoreServices
% gcc -framework CoreServices -o getos main.c
发布于 2015-11-14 03:57:34
这是一个“较少的工作”,对于家庭项目来说足够好(静态分配的缓冲区,忽略错误)。适用于我在OS X 10.11.1。
#include <stdio.h>
/*!
@brief Returns one component of the OS version
@param component 1=major, 2=minor, 3=bugfix
*/
int GetOSVersionComponent(int component) {
char cmd[64] ;
sprintf(
cmd,
"sw_vers -productVersion | awk -F '.' '{print $%d}'",
component
) ;
FILE* stdoutFile = popen(cmd, "r") ;
int answer = 0 ;
if (stdoutFile) {
char buff[16] ;
char *stdout = fgets(buff, sizeof(buff), stdoutFile) ;
pclose(stdoutFile) ;
sscanf(stdout, "%d", &answer) ;
}
return answer ;
}
int main(int argc, const char * argv[]) {
printf(
"Your OS version is: %d.%d.%d\n",
GetOSVersionComponent(1),
GetOSVersionComponent(2),
GetOSVersionComponent(3)
) ;
return 0 ;
}
发布于 2013-06-01 15:29:16
下面的代码应该会在可预见的未来工作,以找出Mac Os X的当前版本。
/* McUsr put this together, and into public domain,
without any guarrantees about anything,
but the statement that it works for me.
*/
#if 1 == 1
#define TESTING
#endif
#include <sys/param.h>
#include <sys/sysctl.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
struct osver {
int minor;
int sub;
} ;
typedef struct osver osxver ;
void macosx_ver(char *darwinversion, osxver *osxversion ) ;
char *osversionString(void) ;
#ifdef TESTING
int main( int argc, char *argv[] )
{
osxver foundver;
char *osverstr= NULL ;
osverstr=osversionString() ;
macosx_ver(osverstr, &foundver ) ;
printf("Mac os x version = 10.%d.%d\n",foundver.minor,foundver.sub );
free(osverstr);
return 0;
}
#endif
char *osversionString(void) {
int mib[2];
size_t len;
char *kernelVersion=NULL;
mib[0] = CTL_KERN;
mib[1] = KERN_OSRELEASE;
if (sysctl(mib, 2, NULL, &len, NULL, 0) < 0 ) {
fprintf(stderr,"%s: Error during sysctl probe call!\n",__PRETTY_FUNCTION__ );
fflush(stdout);
exit(4) ;
}
kernelVersion = malloc(len );
if (kernelVersion == NULL ) {
fprintf(stderr,"%s: Error during malloc!\n",__PRETTY_FUNCTION__ );
fflush(stdout);
exit(4) ;
}
if (sysctl(mib, 2, kernelVersion, &len, NULL, 0) < 0 ) {
fprintf(stderr,"%s: Error during sysctl get verstring call!\n",__PRETTY_FUNCTION__ );
fflush(stdout);
exit(4) ;
}
return kernelVersion ;
}
void macosx_ver(char *darwinversion, osxver *osxversion ) {
/*
From the book Mac Os X and IOS Internals:
In version 10.1.1, Darwin (the core OS) was renumbered from v1.4.1 to 5.1,
and since then has followed the OS X numbers consistently by being four
numbers ahead of the minor version, and aligning its own minor with the
sub-version.
*/
char firstelm[2]= {0,0},secElm[2]={0,0};
if (strlen(darwinversion) < 5 ) {
fprintf(stderr,"%s: %s Can't possibly be a version string. Exiting\n",__PRETTY_FUNCTION__,darwinversion);
fflush(stdout);
exit(2);
}
char *s=darwinversion,*t=firstelm,*curdot=strchr(darwinversion,'.' );
while ( s != curdot )
*t++ = *s++;
t=secElm ;
curdot=strchr(++s,'.' );
while ( s != curdot )
*t++ = *s++;
int maj=0, min=0;
maj= (int)strtol(firstelm, (char **)NULL, 10);
if ( maj == 0 && errno == EINVAL ) {
fprintf(stderr,"%s Error during conversion of version string\n",__PRETTY_FUNCTION__);
fflush(stdout);
exit(4);
}
min=(int)strtol(secElm, (char **)NULL, 10);
if ( min == 0 && errno == EINVAL ) {
fprintf(stderr,"%s: Error during conversion of version string\n",__PRETTY_FUNCTION__);
fflush(stdout);
exit(4);
}
osxversion->minor=maj-4;
osxversion->sub=min;
}
https://stackoverflow.com/questions/5969485
复制相似问题