{{fbdoc item="title" value="Compiler Option: -s"}}----
Sets the executable subsystem

{{fbdoc item="syntax"}}##
	**-s** < //subsystem// >
##
{{fbdoc item="param"}}
	##//subsystem//##
		The executable subsystem: ##gui## or ##console##.

{{fbdoc item="desc"}}
	The ##-s## compiler option specifies the executable subsystem. Allowed subsystems are ##gui## and ##console## (by default, ##console## is used). Specifying a ##gui## subsystem prevents the console window from appearing behind the program window.
	
	The intrinsic macro ##[[KeyPgDdfbgui|__FB_GUI__]]## is set to non-zero (-1) if GUI subsystem mode is active, and set to zero (0) otherwise.  ##[[KeyPgPpPragma|#pragma gui]]## and ##[[KeyPgPpPragma|#pragma gui = 0]]## provide the source-level form of the same setting.

{{fbdoc item="target"}}
	- On Windows and Cygwin, this controls the linker subsystem.
	- Other targets may use the same mode value for target-specific startup or runtime behavior.

{{fbdoc item="see"}}
	- ##[[KeyPgDdfbgui|__FB_GUI__]]##
	- ##[[KeyPgPpPragma|#pragma]]##
	- [[CompilerCmdLine|Using the Command Line]]

{{fbdoc item="back" value="CatPgCompOpt|Compiler Options"}}