[tsan] Make pthread_mutex_clocklock Linux only

Many systems (glibc<2.30, Bionic before 2019, musl, macOS, etc) do not have the function.

Author: MaskRay

compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp

@@ -1380,6 +1380,7 @@ TSAN_INTERCEPTOR(int, pthread_mutex_unlock, void *m) {
   return res;
 }
 
+#if SANITIZER_LINUX
 TSAN_INTERCEPTOR(int, pthread_mutex_clocklock, void *m,
                  __sanitizer_clockid_t clock, void *abstime) {
   SCOPED_TSAN_INTERCEPTOR(pthread_mutex_clocklock, m, clock, abstime);
@@ -1393,6 +1394,7 @@ TSAN_INTERCEPTOR(int, pthread_mutex_clocklock, void *m,
     MutexInvalidAccess(thr, pc, (uptr)m);
   return res;
 }
+#endif
 
 #if SANITIZER_GLIBC
 #  if !__GLIBC_PREREQ(2, 34)

compiler-rt/test/tsan/pthread_mutex_clocklock.cpp

@@ -1,5 +1,5 @@
 // RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
-// UNSUPPORTED: darwin
+// REQUIRES: glibc-2.30
 #include <pthread.h>
 #include <stdio.h>
 
@@ -26,4 +26,4 @@ int main() {
 }
 
 // CHECK-NOT: WARNING: ThreadSanitizer: unlock of an unlocked mutex
-// CHECK: PASS
+// CHECK: PASS