HP aC++/HP C A.06.20 Programmer's Guide

NOTE: For HP aC++, the -Ae option must also be used.

-AOa and -AOe

-AOa

-AOe

See the following C mode options:

• “-Aa” (page 108)

• “-Ae” (page 110)

In addition to specifying the ANSI C language dialect, allows the optimizer to

aggressively exploit the assumption that the source code conforms to the ANSI

programming language C standard ISO 9899:1990.

At present, the effect is to make +Otype_safety=ansi the default. As new

independently-controllable optimizations are developed that depend on the ANSI C

standard, the flags that enable those optimizations may also become the default under

-AOa or -AOe.

-AP

The -AP option turns off -AA mode and uses the older C++ runtime libraries.

NOTE: This option is not supported in legacy HP C. This option is ignored with

warnings in C-mode.

+legacy_cpp

The +legacy_cpp option enables the use of cpp.ansi ANSI C preprocessor. This

option is available in C-mode only.

NOTE: This option is not normally needed and may be deprecated in future.

+legacy_v5

This option enables the use of the A.05.60 compiler. The default compiler is the A.06.00

compiler.

+tru64

Standards Related Options 111