Pragma directive syntax

There are two forms of pragma directives supported in the ILE C/C++ compilers:

#pragma name

This form uses the following syntax:

#pragma name syntax

The name is the pragma directive name, and the suboptions are any required or optional suboptions that can be specified for the pragma, where applicable.

_Pragma ("name")

This form uses the following syntax:

_Pragma("name") syntax

For example, the statement:

_Pragma ("pack(1)")

is equivalent to:

#pragma pack(1)

For all forms of pragma statements, you can specify more than one name and suboptions in a single #pragma statement.

The name on a pragma is subject to macro substitutions, unless otherwise stated. The compiler ignores unrecognized pragmas, issuing an informational message (C++) or warning message (C) indicating the unrecognized pragma.

If you have any pragmas that are not common to both C and C++ in code that is compiled by both compilers, you should add conditional compilation directives around the pragmas. (These directives are not strictly necessary since unrecognized pragmas are ignored.) For example, #pragma info is only recognized by the C++ compiler, so you might decide to add conditional compilation directives around the pragma.

#ifdef __cplusplus
#pragma info(none)
#endif