Clarion Community Help

Navigation: Advanced Topics > Legacy Project System Reference >====== Predefined Compiler Flags ======

Pre-defined Flags

Whenever you #compile a program the project system automatically defines a number of flags to ON or OFF, depending on the target system. You may use these predefined flags to control your make process. Here are the flags that you can use in OMIT and COMPILE statements for conditional compilation:

_ABCDllMode_	Used by the ABC template chain on all CLASS definitions to indicate that the CLASS is declared in an external .DLL. A project DEFINE is used to toggle the DLL mode.
_CDD_	On for Clarion for DOS
_CW_	On for Clarion, version 1.0
_CWVER_	Four digit number. The top two digits are the major version of Clarion. The lower two digits are the minor version. For the initial release of Clarion 6.0 this is set to 6000, 6.1, 6100, etc.
_CLW15_	On for Clarion, version 1.5
_CLW20_	On for Clarion, version 2.0
_CLW21_	On for Clarion, version 4
_C5_	On for Clarion, version 5
_C55_	On for Clarion, version 5.5 and later
_C60_	On for Clarion, version 6 and later
_C61_	On for Clarion, version 6.1 and later
_C62_	On for Clarion, version 6.2 and later
_C63_	On for Clarion, version 6.3 and later
_C70_	On for Clarion, version 7.0 and later
_C71_	On for Clarion, version 7.1 and later
_C72_	On for Clarion, version 7.2 and later
_C73_	On for Clarion, version 7.3 and later
_C80_	On for Clarion, version 8.0 and lateretcetera
_DEBUG_	On for application debug mode
DLL_MODE	On when compiled to link to the runtime DLLs
LIB_MODE	On when building a LIB
_VER_Cxx	Where xx is a specific version number (70,71,80, etc.)_VER_Cxx is either true or non-existent depending on what version of Clarion you are using. Once it exists, it stays in existence for all later versions of Clarion.
_WIDTH32_	On for 32-bit applications(deprecated)

.