Error Handling Script¶
LLD provides the ability to hook into some error handling routines through a
user-provided script specified with
--error-handling-script=<path to the script>
when certain errors are encountered. This document specifies the requirements of
such a script.
The script is expected to be available in the
PATH or to be provided using a
full path. It must be executable. It is executed in the same environment as the
LLD calls the error handling script using the following arguments:
error-handling-script <tag> <tag-specific-arguments...>
The following tags are supported:
missing-lib: indicates that LLD failed to find a library. The library name is specified as the second argument, e.g.
error-handling-script missing-lib mylib
undefined-symbol: indicates that given symbol is marked as undefined. The unmangled symbol name is specified as the second argument, e.g.
error-handling-script undefined-symbol mysymbol
Upon success, the script is expected to return 0. A non-zero value is interpreted as an error and reported to the user. In both cases, LLD still reports the original error.