OCC Defining Macros

/Dxxx define a macro

This switch defines a macro as if a #define statement had been used somewhere in the source. It is useful for building different versions of a program without modifying the source files between compiles. Note that you may not give macros defined this way a value. For example:

 OCC /DORANGE myfunc.c

is equivalent to placing the following statement in the file and compiling it.

 #define ORANGE

Standard Predefined Macros

The following standard macros are predefined by the compiler:

Macro	Usage
__FILE__	name of source file
__DATE__	the current date
__DATEISO__	the current date (ISO format)
__TIME__	the current time
__LINE__	the current line number

Non-standard predefined macros

The following non-standard macros are predefined by the compiler:

Macro	Usage
__ORANGEC__	always defined, value is "major version * 100 + minor version"
__ORANGEC_MAJOR__	always defined, value is "major version"
__ORANGEC_MINOR__	always defined, value is "minor version"
__ORANGEC_PATCHLEVEL__	always defined, value is "build number"
__VERSION__	always defined, rendition of the major/revision/minor/build as a string
__RTTI__	defined when C++ rtti/exception handling info is present
__386__	always defined
__i386__	always defined
_i386_	always defined
__i386	always defined
__WIN32__	defined for WIN32
_WIN32	defined for WIN32
__DOS__	defined for MSDOS
__RAW_IMAGE__	defined if building a raw image
__LSCRTL_DLL	defined when LSCRTL.dll is in use
__MSVCRT_DLL	defined when MSVCRT.dll is in use
__CRTDLL_DLL	defined when CRTDLL.dll is in use
__COUNTER__	starts at 0 and increments every usage