ARM VERSION 1.2 Datasheet download pdf (Page 32)

C and C++ Compilers

Stack checking qualifiers

/noswstackcheck

This option uses the non software-stack-checking ATPCS variant.

This is the default.

/swstackcheck

This option uses the software-stack-checking ATPCS variant.

2.3.3 Setting the source language

This section describes options that determine the source language variant accepted by

the compiler (see also Controlling code generation on page 2-24).

The following options specify how strictly the compiler enforces the standards and

conventions of that language. By default, the C compilers compile ANSI-C, and the

C++ compilers compile as much as they can of ISO/IEC C++.

-ansi

This option compiles ANSI standard C. This is the default for armcc and

tcc. The default mode is a fairly strict ANSI compiler, but without some

of the inconvenient features of the ANSI standard. There are also some

minor extensions allowed (for example

in comments and

identifiers).

-ansic

This option compiles ANSI standard C. This option is synonymous with

the

-ansi

option.

-cpp

This option compiles ISO/IEC C++. This option is the default with the

C++ compilers and not available with the C compilers.

-embeddedcplusplus

This option compiles standard Embedded C++ (EC++). This option is

not available with the C compilers.

-strict

This option enforces more stringent conformance to the ANSI C standard

and the ISO/IEC C++ standard. For example, the following code:

static struct T {int i; };

gives an error when compiled with

-cpp -strict

, but only a warning with

-cpp

. Because no object is declared,

static

is spurious. In the C++

standard, the code shown is therefore illegal.

You can combine language options:

armcc -ansi

Compiles ANSI standard C. This is the default.

armcc -strict

Compiles strict ANSI standard C.

armcpp

Compiles standard C++.

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