[scudo] Pass SANITIZER_COMMON_LINK_FLAGS to the shared library LINK_FLAGS

[cryptoad]

Summary

We somehow never did it, and it raised no issue until now, when trying to
enable Fuchsia as a supported Scudo platform in the cmake config.

So propagate SANITIZER_COMMON_LINK_FLAGS for now.

lib/scudo/CMakeLists.txt

 add_compiler_rt_component(scudo)
 
 include_directories(..)
 
 set(SCUDO_CFLAGS ${SANITIZER_COMMON_CFLAGS})
 # SANITIZER_COMMON_CFLAGS include -fno-builtin, but we actually want builtins!
 list(APPEND SCUDO_CFLAGS -fbuiltin)
 append_rtti_flag(OFF SCUDO_CFLAGS)
 
+set(SCUDO_DYNAMIC_LINK_FLAGS ${SANITIZER_COMMON_LINK_FLAGS})
+
 set(SCUDO_SOURCES
   scudo_allocator.cpp
   scudo_flags.cpp
   scudo_crc32.cpp
   scudo_interceptors.cpp
   scudo_termination.cpp
   scudo_tsd_exclusive.cpp
   scudo_tsd_shared.cpp
add_compiler_rt_runtime(clang_rt.scudo
     ARCHS ${SCUDO_SUPPORTED_ARCH}
     SOURCES ${SCUDO_SOURCES} ${SCUDO_CXX_SOURCES}
     OBJECT_LIBS RTSanitizerCommonNoTermination
                 RTSanitizerCommonLibc
                 RTInterception
                 RTUbsan
                 RTUbsan_cxx
     CFLAGS ${SCUDO_CFLAGS}
+    LINK_FLAGS ${SCUDO_DYNAMIC_LINK_FLAGS}
     LINK_LIBS ${SCUDO_DYNAMIC_LIBS}
     PARENT_TARGET scudo)
 endif()