ARM Compiler toolchain v4.1 for µVision Using the Compiler

Overview of the compiler
2.2 Source language modes of the compiler
The compiler has three distinct source language modes that you can use to compile different
varieties of C and C++ source code:
ISO C90
ISO C99
ISO C++
The compiler compiles C as defined by the 1990 C standard and addenda.
Use the compiler option --c90 to compile C90 code. This is the default behavior.
The compiler compiles C as defined by the 1999 C standard and addenda.
Use the compiler option --c99 to compile C99 code.
The compiler compiles C++ as defined by the 2003 standard, excepting wide
streams and export templates.
Use the compiler option --cpp to compile C++ code.
The compiler provides support for numerous extensions to the C and C++ languages. The
compiler has a mode where compliance to a source language is either enforced or relaxed:
Strict mode In strict mode the compiler enforces compliance with the language standard
relevant to the source language.
To compile in strict mode, use the command-line option --strict.
2.2.1 See also
Concepts
• New language features of C99 on page 5-77
• Hexadecimal floating-point numbers in C99 on page 5-83.
Reference
Compiler Reference:
• --c90 on page 3-18
• --c99 on page 3-18
• --cpp on page 3-20
• --strict, --no_strict on page 3-88
• Source language modes on page 2-3
• Language extensions and language compliance on page 2-5.
ARM DUI 0375C Copyright © 2007-2008, 2011 ARM. All rights reserved. 2-3
ID061811
Non-Confidential