diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h b/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
--- a/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
@@ -585,4 +585,25 @@
 #define SANITIZER_INTERCEPT_UNAME (SI_POSIX && !SI_FREEBSD)
 #define SANITIZER_INTERCEPT___XUNAME SI_FREEBSD
 
+// This macro gives a way for downstream users to override the above
+// interceptor macros irrespective of the platform they are on. They have
+// to do two things:
+// 1. Build compiler-rt with -DSANITIZER_INTERCEPT_OVERRIDE.
+// 2. Provide a header file named sanitizer_intercept_overriders.h in the
+//    include path for their compiler-rt build.
+// An example of an overrider for strlen that one can list in
+// sanitizer_intercept_overriders.h is as follows:
+//
+// #ifdef SANITIZER_INTERCEPT_STRLEN
+// #undef SANITIZER_INTERCEPT_STRLEN
+// #define SANITIZER_INTERCEPT_STRLEN <value of choice>
+// #endif
+//
+// This "feature" is useful for downstream users who do not want some of
+// their libc funtions to be intercepted. They can selectively disable
+// interception of those functions.
+#ifdef SANITIZER_INTERCEPT_OVERRIDE
+#include <sanitizer_intercept_overriders.h>
+#endif
+
 #endif  // #ifndef SANITIZER_PLATFORM_INTERCEPTORS_H