Global auditing requirements can be established by setting the environment variable LD_AUDIT. For example, this environment variable can be used to audit the application main together with all the dependencies of the application, with the audit library audit.so.1.
$ LD_AUDIT=audit.so.1 main
Global auditing can also be achieved by recording a local auditor in the application, together with the –z globalaudit option. For example, the application main can be built to enable global auditing by using the link-editor's –P option and –z globalaudit option.
$ cc -o main main.c -Wl,-Paudit.so.1 -z globalaudit
$ elfdump -d main | grep AUDIT
[3] DEPAUDIT 0x1b2 audit.so.1
[26] FLAGS_1 0x1000000 [ GLOBAL-AUDITING ]
The auditing enabled through either of these mechanisms results in the audit library being passed information regarding all of the dynamic objects of the application.