#include "vers.h" FUNC_SYMVER(_old_foo, foo@VERS.0); FUNC_SYMVER(_old_bar, bar@VERS.0); SYMVER(_old_foobar, foobar@VERS.0); int bar () { return 1; } int __attribute__ ((weak)) _old_bar () { return bar (); } int foo () { return 2; } int _old_foo () { return foo (); } int _old_foobar = -1; int foobar = 1;