This patch adds a check when parsing the tool config files: Clients for alternative archs (e.g. for cross-exec) injection are only appended if the path to the client lib actually exists.
This is a preparation for system-wide deployments, where this check has to be performed at runtime as users might only install the dr library for a single architecture.
Previously having invalid paths in the tool config file worked if the respective client was not requested, but led to a warning. With this patch, the missing client is simply not registered at all.
Issue: #5153
Signed-off-by: Felix Moessbauer [email protected]