--- a/third_party/blink/renderer/platform/wtf/stack_util.cc.orig
+++ b/third_party/blink/renderer/platform/wtf/stack_util.cc
@@ -29,7 +29,7 @@
 // FIXME: On Mac OSX and Linux, this method cannot estimate stack size
 // correctly for the main thread.
 
-#elif defined(__GLIBC__) || defined(OS_ANDROID) || defined(OS_FREEBSD) || \
+#elif defined(OS_LINUX) || defined(OS_ANDROID) || defined(OS_FREEBSD) || \
     defined(OS_FUCHSIA)
   // pthread_getattr_np() can fail if the thread is not invoked by
   // pthread_create() (e.g., the main thread of blink_unittests).
@@ -97,7 +97,7 @@
 }
 
 void* GetStackStart() {
-#if defined(__GLIBC__) || defined(OS_ANDROID) || defined(OS_FREEBSD) || \
+#if defined(OS_LINUX) || defined(OS_ANDROID) || defined(OS_FREEBSD) || \
     defined(OS_FUCHSIA)
   pthread_attr_t attr;
   int error;