Merge "threads.h: avoid defining gettid on glibc >= 2.32"

Author: Jim Pollock

libcutils/include/cutils/threads.h

@@ -31,7 +31,9 @@ extern "C" {
 //
 // Deprecated: use android::base::GetThreadId instead, which doesn't truncate on Mac/Windows.
 //
+#if !defined(__GLIBC__) || __GLIBC__ >= 2 && __GLIBC_MINOR__ < 32
 extern pid_t gettid();
+#endif
 
 #ifdef __cplusplus
 }

libcutils/threads.cpp

@@ -25,8 +25,9 @@
 #include <windows.h>
 #endif
 
-#if defined(__BIONIC__)
+#if defined(__BIONIC__) || defined(__GLIBC__) && __GLIBC_MINOR__ >= 32
 // No definition needed for Android because we'll just pick up bionic's copy.
+// No definition needed for Glibc >= 2.32 because it exposes its own copy.
 #else
 pid_t gettid() {
 #if defined(__APPLE__)