Developer Guide and Reference

Contents

isystem

Specifies a directory to add to the start of the system include path.

Syntax

Linux:
-isystem
dir
macOS:
-isystem
dir
Windows:
None
Arguments
dir
Is the directory to add to the system include path.
Default
OFF
The default system include path is used.
Description
This option specifies a directory to add to the system include path. The compiler searches the specified directory for include files after it searches all directories specified by the
-I
compiler option but before it searches the standard system directories.
On Linux* systems, this option is provided for compatibility with gcc.
Alternate Options
None