Checking Pragma Settings

The preprocessor function __option() returns the state of pragma settings at compile-time. The syntax is

  __option(setting-name)

where setting-name is the name of a pragma that accepts the on, off, and reset options.

If setting-name is on, __option(setting-name) returns 1. If setting-name is off, __option(setting-name) returns 0. If setting-name is not the name of a pragma, __option(setting-name) returns false. If setting-name is the name of a pragma that does not accept the on, off, and reset options, the compiler issues a warning message.

The following listing shows an example.

Listing: Using the __option() Preprocessor Function

#if __option(ANSI_strict)

#include "portable.h" /* Use the portable declarations. */

#else

#include "custome.h" /* Use the specialized declarations. */

#endif

Table 1. Preprocessor Setting Names for __option()
Argument	Corresponding Setting or Pragma
always_inline	Pragma always_inline.
ANSI_strict	ANSI Strict setting in the Language panel and pragma ANSI_strict.
auto_inline	Auto-Inline setting of the Inlining menu in the Language panel and pragma auto_inline.
`check_inline_sp_effects`	Pragma `check_inline_sp_effects`.
const_strings	Pragma const_strings.
defer_codegen	Pragma defer_codegen.
dollar_identifiers	Pragma dollar_identifiers.
dont_inline	Don't Inline setting in the Language panel and pragma dont_inline.
dont_reuse_strings	Reuse Strings setting in the Language panel and pragma dont_reuse_strings.
`enumsalwaysint`	Enums Always Int setting in the Language panel and pragma `enumsalwaysint`.
`explicit_zero_data`	Pragma `explicit_zero_data`.
`factor1`	Pragma `factor1`.
`factor2`	Pragma `factor2`.
`factor3`	Pragma `factor3`.
`extended_errorcheck`	Extended Error Checking setting in the Language panel and pragma `extended_errorcheck`.
`fullpath_prepdump`	Pragma `fullpath_prepdump`.
`initializedzerodata`	Pragma initializedzerodata.
`inline_bottom_up`	Pragma `inline_bottom_up`.
`interrupt`	Pragma `interrupt`.
`line_prepdump`	Pragma `line_prepdump`.
`mpwc_newline`	Map newlines to CR setting in the Language panel and pragma `mpwc_newline`.
`mpwc_relax`	Relaxed Pointer Type Rules setting in the Language panel and pragma `mpwc_relax`.
`nofactor1`	Pragma `nofactor1`.
`nofactor2`	Pragma `nofactor2`.
`nofactor3`	Pragma `nofactor3`.
`only_std_keywords`	ANSI Keywords Only setting in the Language panel and pragma `only_std_keywords`.
`opt_common_subs`	Pragma `opt_common_subs`.
`opt_dead_assignments`	Pragma `opt_dead_assignments`.
`opt_dead_code`	Pragma `opt_dead_code`.
`opt_lifetimes`	Pragma `opt_lifetimes`.
`opt_loop_invariants`	Pragma `opt_loop_invariants`.
`opt_propagation`	Pragma `opt_propagation`.
`opt_strength_reduction`	Pragma `opt_strength_reduction`.
`opt_strength_reduction_strict`	Pragma `opt_strength_reduction_strict`.
`opt_unroll_loops`	Pragma `opt_unroll_loops`.
`optimize_for_size`	Pragma `optimize_for_size`.
`packstruct`	Pragma `pactstruct`.
`peephole`	Pragma `peephole`.
`pool_strings`	Pool Strings setting in the Language panel and pragma `pool_strings`.
`profile`	Pragma `profile`.
`readonly_strings`	Make String Read Only setting in the M56800 Processor settings panel and pragma `readonly_strings`.
`require_prototypes`	Require Function Prototypes setting in the Language panel and pragma `require_prototypes`.
`reverse_bitfields`	Pragma `reverse_bitfields`.
`simple_prepdump`	Pragma `simple_prepdump`.
`suppress_init_code`	Pragma `suppress_init_code`.
`suppress_warnings`	Pragma `suppress_warnings`.
`syspath_once`	Pragma `syspath_once`.
`unsigned_char`	Use Unsigned Chars setting in the Language panel and pragma `unsigned_char`.
`warn_any_ptr_int_conv`	Pragma`warn_any_ptr_int_conv.`
`warn_emptydecl`	Empty Declarations setting in the Language panel and pragma `warn_emptydecl`.
`warn_extracomma`	Extra Commas setting in the Preprocessor panel and pragma `warn_extracomma`.
`warn_filenamecaps`	Pragma `warn_filenamecaps.`
`warn_filenamecaps_system`	Pragma `warn_filenamecaps_system.`
`warn_illegal_instructions`	Pragma `warn_illegal_instructions`.
`warn_illpragma`	Illegal Pragmas setting in the panel and pragma `warn_illpragma`.
`warn_impl_f2i_conv`	Pragma `warn_impl_f2i_conv`.
`warn_impl_i2f_conv`	Pragma `warn_impl_i2f_conv`.
`warn_impl_s2u_conv`	Pragma `warn_impl_s2u_conv`.
`warn_implicitconv`	Implicit Arithmetic Conversions setting in the processor panel and pragma `warn_implicitconv`.
`warn_largeargs`	Pragma `warn_largeargs`.
`warn_missingreturn`	Pragma `warn_missingreturn`
`warn_no_side_effect`	Pragma `warn_no_side_effect`.
`warn_notinlined`	Non-Inlined Functions setting in the processor panel and pragma `warn_notinlined`.
`warn_padding`	Pragma `warn_padding.`
`warn_possunwant`	Possible Errors setting in the Preprocessor panel and pragma `warn_possunwant`.
`warn_ptr_int_conv`	Pragma `warn_ptr_int_conv`
`warn_resultnotused`	Pragma `warn_resultnotused`.
`warn_undefmacro`	Pragma `warn_undefmacro.`
`warn_unusedarg`	Unused Arguments setting in the processor panel and pragma `warn_unusedarg`.
`warn_unusedvar`	Unused Variables setting in the Language panel and pragma `warn_unusedvar`.
`warning_errors`	Treat Warnings As Errors setting in the Preprocessor panel and pragma `warning_errors`.