ld/testsuite/ld-scripts/extern.t

EXTERN(sym1)
EXTERN(sym2, sym3)
EXTERN(sym4 sym5)

PROVIDE(sym1 = 1);
PROVIDE(sym2 = 2);
PROVIDE(sym3 = 3);
PROVIDE(sym4 = 4);
PROVIDE(sym5 = 5);

SECTIONS
{
}