[scudo] Add SANITIZER_CXX_ABI_LIBRARY to SCUDO_DYNAMIC_LIBS

[cryptoad]

Summary

This is needed for the shared runtime since we are pulling RTUbsan in.

Otherwise some builds might fail with errors such as:
error: undefined reference to '__dynamic_cast'

[srhines]

Thanks. This looks like it should work. Chih-hung can verify it on his side as well.

lib/scudo/CMakeLists.txt

 
 # Enable the AArch64 CRC32 feature for scudo_crc32.cpp, if available.
 # Note that it is enabled by default starting with armv8.1-a.
 if (COMPILER_RT_HAS_MCRC_FLAG)
   set_source_files_properties(scudo_crc32.cpp PROPERTIES COMPILE_FLAGS -mcrc)
 endif()
 
 if(COMPILER_RT_HAS_SCUDO)
-  set(SCUDO_DYNAMIC_LIBS ${SANITIZER_COMMON_LINK_LIBS})
+  set(SCUDO_DYNAMIC_LIBS ${SANITIZER_CXX_ABI_LIBRARY}
+                         ${SANITIZER_COMMON_LINK_LIBS})
   append_list_if(COMPILER_RT_HAS_LIBDL dl SCUDO_DYNAMIC_LIBS)
   append_list_if(COMPILER_RT_HAS_LIBRT rt SCUDO_DYNAMIC_LIBS)
   append_list_if(COMPILER_RT_HAS_LIBPTHREAD pthread SCUDO_DYNAMIC_LIBS)
   append_list_if(COMPILER_RT_HAS_LIBLOG log SCUDO_DYNAMIC_LIBS)
 
   add_compiler_rt_runtime(clang_rt.scudo
     STATIC
     ARCHS ${SCUDO_SUPPORTED_ARCH}