The Gestalt() function located in CarbonCore/OSUtils.h
has been deprecated as of OS X 10.8 Mountain Lion.
I often use this function to test the version of the OS X operating system at runtime (see the toy example below).
What other API could be used to check the OS X operating system version at runtime in a Cocoa application?
int main() {
SInt32 versMaj, versMin, versBugFix;
Gestalt(gestaltSystemVersionMajor, &versMaj);
Gestalt(gestaltSystemVersionMinor, &versMin);
Gestalt(gestaltSystemVersionBugFix, &versBugFix);
printf("OS X Version: %d.%d.%d\n", versMaj, versMin, versBugFix);
}
On OS X 10.10 (and iOS 8.0), you can use [[NSProcessInfo processInfo] operatingSystemVersion]
which returns a NSOperatingSystemVersion
struct, defined as
typedef struct {
NSInteger majorVersion;
NSInteger minorVersion;
NSInteger patchVersion;
} NSOperatingSystemVersion;
There is also a method in NSProcessInfo
that will do the comparison for you:
- (BOOL)isOperatingSystemAtLeastVersion:(NSOperatingSystemVersion)version
Beware, although documented to be available in OS X 10.10 and later, both operatingSystemVersion
and isOperatingSystemAtLeastVersion:
exist on OS X 10.9 (probably 10.9.2) and work as expected. It means that you must not test if NSProcessInfo
responds to these selectors to check if you are running on OS X 10.9 or 10.10.
On iOS, these methods are effectively only available since iOS 8.0.