Cl.exe

CL.EXE is the filename of the real-mode or protected-mode C driver program from Microsoft C Optimizing Compiler, Microsoft C/C++ and the later Visual C++ products.

Versions

Date	Version	Size	Comments
1996-02-05	6.00A.04	29,831 bytes	1990

Usage

cl [ option... ] filename... [ -link linkoption... ]

Options

Class	Switch	Description	Doc	Introduced
Memory Model	AS	small model
	AC	compact model
	AM	medium model
	AL	large model
	AH	huge model
	AT	tiny model (.COM files)		C 6.0
Optimisation	O	enable optimization (same as /Ot)
	Oa	ignore aliasing
	Od	disable optimizations
	Oe	enable registers allocations
	Og	enable global optimization
	Oi	enable intrinsic functions
	Ol	enable loop optimizations
	On	disable "unsafe" optimizations
	Op	enable precision optimizations
	Or	disable in_line return
	Os	optimize for space
	Ot	optimize for speed
	Ow	assume aliasing in function calls
	Ox	max. optimization (/Oegilt /Gs)
Code Generation	G0	8086 instructions
	G1	186 instructions
	G2	286 instructions
	G3	386 instructions
	G4	486 instructions
	Gc	Pascal style function calls
	Gd	cdecl returns		C386
	Gm	put strings in constant segment
	Gr	_fastcall type calls
	Gs	no stack checking
	Gt[number]	data size threshold
	Gw	Windows entry sequence
	Gz	stdcall function calls
Output Files	Fa	[assembly listing file]
	Fb	[bound executable file]
	Fc	[mixed source/object listing file]
	Fe	<executable file>
	Fl	[object listing file]
	Fm	[map file]
	Fo	<object file>
	Fr	[source browser info file]
	FR	[extended source browser info file]
	Fs	[source listing file]
	K	keep temp files	U
	nologo	disable logo	U
Preprocessor	C	don't strip comments
	D<name>[=text]	define macro
	E	preprocess to stdout
	EP	same as /E but no #line
	I<name>	add #include path
	P	preprocess to file
	U<name>	remove predefined macro
	u	remove all predefined macros
	X	ignore "standard places"
Language	Za	disable extensions
	Zd	line number information
	Ze	enable extensions
	Zg	generate declarations
	Zi	symbolic debugging information
	Zl	remove default library info
	Zp[n]	pack structs on n-byte boundary
	Zs	syntax check only
Floating Point	FPa	calls with altmath
	FPc	calls with emulator
	FPc87	calls with 8087 library
	FPi	inline with emulator
	FPi87	inline with 8087
Source Listing	Sl<columns>	set line width
	Sp<lines>	set page length
	St<string>	set title string
	Ss<string>	set subtitle string
Miscellaneous	B[123]	<pass> to invoke different C[123]
	c	compile only, no link
	H<number>	external name length
	J	default char type is unsigned
	qc	use quick compile feature
	Tc<file>	compile file without .c
	V<string>	set version string
	W<number>	warning level
MASM Support	MA	<MASM switch>
	Ta<file>	assemble file without .asm
	Fx	[MASM's cross-reference file]
Linking	F <hex_number>	stack size (hex. bytes)
	Lc	link compatibility mode executable
	Lr	link compatibility mode executable
	Lp	link protect mode executable
	link	[linker_options_and_libraries]
	ML	link C runtime as part of DLL
	MD	use C runtime as DLL
	MT	support multi-thread