diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp
--- a/compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp
@@ -505,6 +505,8 @@
 
 uptr GetRSS() { UNIMPLEMENTED(); }
 
+void InitializePlatformCommonFlags(CommonFlags *cf) {}
+
 }  // namespace __sanitizer
 
 using namespace __sanitizer;