A.2.110.1 Defaults

If the -xbuiltin option is not specified, then the compiler assumes -xbuiltin=%none.

If only -xbuiltin is specified, then the compiler assumes -xbuiltin=%all.

Interactions

The expansion of the macro -fast includes -xbuiltin=%all.

Examples

The following compiler command requests special handling of the standard library calls.

example% CC -xbuiltin -c foo.cc

The following compiler command request that there be no special handling of the standard library calls. Note that the expansion of the macro -fast includes -xbuiltin=%all.

example% CC -fast -xbuiltin=%none -c foo.cc