| Option name | Equivalent pragma name | Description |
|---|---|---|
| -qalign | #pragma options align, #pragma align | Specifies the alignment of data objects in storage, which avoids performance problems with misaligned data. |
| -qalignrulefor (C++ only) | None. | When used with -qalign=power, determines whether a 4-byte alignment ceiling is applied to non-first members of structures that are of type typedef to array of element type that exceeds the alignment ceiling. |
| -qgenproto (C only) | None. | Produces prototype declarations from K&R function definitions or function definitions with empty parentheses, and displays them to standard output. |
| -qnamemangling (C++ only) | #pragma namemangling | Chooses the name mangling scheme for external symbol names generated from C++ source code. |
| -qobjmodel (C++ only) | #pragma object_model | Sets the object model to be used for structures, unions, and classes. |
| -qoldpassbyvalue (C++ only) | #pragma pass_by_value | Specifies how classes containing const or reference members are passed in function arguments. |
| -qupconv (C only) | #pragma options upconv | Specifies whether the unsigned specification is preserved when integral promotions are performed. |
| -qvecnvol | None. | Specifies whether to use volatile or non-volatile vector registers. |