# imacros

Allows a header to be specified that is included in front of the other headers in the translation unit.

## Syntax

Linux: | -imacros filename

macOS: | -imacros filename

Windows: | None

## Arguments

filename | Name of header file.

## Default

OFF |

## Description

Allows a header to be specified that is included in front of the other headers in the translation unit.

## IDE Equivalent

None

## Alternate Options

None

Parent topic: Preprocessor Options