ARM Software Development Toolkit Reference Guide 2.3.3. Setting the source language

2.3.3. Setting the source language

This section describes options that have a major effect on the source language accepted by the compiler. The compiler modes are described in detail in Source language modes. See also, Controlling code generation.

The following options can be used to specify the source language that the compiler is to accept, and how strictly it enforces the standards or conventions of that language. If no source language option is specified, the C compilers attempt to compile ANSI C, and the C++ compilers attempt to compile C++ that conforms to the Draft Standard.

-ansi

Compiles ANSI standard C. This is the default for armcc and tcc.

-ansic

Compiles ANSI standard C. This option is synonymous with the -ansi option.

-cfront

This option applies to the C++ compilers only.

The compiler alters its behavior so that it is more likely to accept C++ programs that Cfront accepts.

-fussy

Is extra strict about enforcing conformance to the ANSI C standard, Draft C++ standard, or PCC conventions. For example, in C++ mode the following code gives an error when compiled with -fussy and a warning without:

static struct T {int i; };

Because no object is declared, the static is spurious. In a strict reading of the C++ Draft Standard, it is illegal.

-pcc

Compiles (BSD 4.2) Portable C compiler C. This dialect is based on the original Kernighan and Ritchie definition of C, and is the one used to build UNIX systems. The -pcc option alters the language accepted by the compiler, however the built-in ANSI C headers are still used. See also, the -zc option in Controlling code generation.

The -pcc option alters the language accepted by the compilers in the following ways:

char is signed
sizeof is signed
an approximation of early UNIX-style C preprocessing is used.

-pedantic

This is a synonym for -fussy.

-strict

This is a synonym for -fussy.

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