--gnu_version=version
Attempts to make the compiler compatible with a particular version of GCC.
Syntax
--gnu_version=version
Where version
Mode
This option is for when GNU compatibility mode is being used.
Usage
This option is for expert use. It is provided for dealing with legacy code. You are not normally required to use it.
The maximum supported values for --gnu_version in armcc are as follows:
| armcc | GCC |
|---|---|
| 4.0, 4.1 | 40300 (GCC 4.3) |
| 5.0, 5.01, 5.02, 5.03, 5.04 | 40400 (GCC 4.4) |
| 5.05, 5.06 | 40800 (GCC 4.8) |
Default
In ARM Compiler 5.06, the default is 40700. This corresponds to GCC version 4.7.0.
In ARM Compiler 4.1 through to 5.05, the default is 40200. This corresponds to GCC version 4.2.0.
Example
--gnu_version=30401 makes the compiler compatible with GCC 3.4.1 as far as
possible.