+ /// isMacOSXVersionLT - Comparison function for checking OS X version
+ /// compatibility, which handles supporting skewed version numbering schemes
+ /// used by the "darwin" triples.
+ unsigned isMacOSXVersionLT(unsigned Major, unsigned Minor = 0,
+ unsigned Micro = 0) const {
+ assert(isMacOSX() && "Not an OS X triple!");
+
+ // If this is OS X, expect a sane version number.
+ if (getOS() == Triple::MacOSX)
+ return isOSVersionLT(Major, Minor, Micro);
+
+ // Otherwise, compare to the "Darwin" number.
+ assert(Major == 10 && "Unexpected major version");
+ return isOSVersionLT(Minor + 4, Micro, 0);
+ }
+