# ansi

Enables language compatibility with the gcc option ansi.

## Syntax

Linux: | -ansi

macOS: | -ansi

Windows: | None

## Arguments

None

## Default

OFF | GNU C++ is more strongly supported than ANSI C.

## Description

This option enables language compatibility with the gcc option -ansi and provides the same level of ANSI standard conformance as that option.

This option sets option fmath-errno.

If you want strict ANSI conformance, use the -strict-ansi option.

## IDE Equivalent

Visual Studio: None

Eclipse: Language > ANSI Conformance

Xcode: Language > C Language Dialect and Language > C++ Language Dialect

## Alternate Options

None

Parent topic: Language Options