--- a/tools/profiler/core/platform-linux.cc
+++ b/tools/profiler/core/platform-linux.cc
@@ -701,10 +701,12 @@
 {
   MOZ_ASSERT(aContext);
   ucontext_t* pContext = reinterpret_cast<ucontext_t*>(aContext);
+#ifdef __GLIBC__
   if (!getcontext(pContext)) {
     context = pContext;
     SetSampleContext(this, aContext);
   }
+#endif
 }
 
 void OS::SleepMicro(int microseconds)