Delphi Compiler Directives (List) Index

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The following topic lists the RAD Studio compiler directives.

Overview

• Delphi compiler directives

Compiler Directives

Delphi Compiler Directive	Associated Symbol
Align fields (Delphi)	{$A},{$ALIGN}
Application type (Delphi)	{$APPTYPE}
Assert directives (Delphi)	{$C},{$ASSERTIONS}
Boolean short-circuit evaluation (Delphi compiler directive)	{$B},{$BOOLEVAL}
Code align (Delphi)	{$CODEALIGN}
Conditional compilation (Delphi)	{$IFDEF}, {$IFNDEF}, {$IF}, {$ELSEIF}, {$ELSE}, {$ENDIF}, {$IFEND}
Debug information (Delphi)	{$D},{$DEBUGINFO}
DEFINE directive (Delphi)	{$DEFINE}
DENYPACKAGEUNIT directive (Delphi)	{$DENYPACKAGEUNIT}
Description (Delphi)	{$D},{$DESCRIPTION}
DESIGNONLY directive (Delphi)	{$DESIGNONLY}
ELSE (Delphi)	{$ELSE}
ELSEIF (Delphi)	{$ELSEIF}
ENDIF directive (Delphi)	{$ENDIF}
Executable extension (Delphi)	{$E},{$EXTENSION}
Export symbols (Delphi)	{$ObjExportAll}
Extended syntax (Delphi)	{$X},{$EXTENDEDSYNTAX}
Extended type compatibility (Delphi)	{$EXTENDEDCOMPATIBILITY}
External Symbols (Delphi)	{$EXTERNALSYM [ 'typeNameInHpp' [ 'typeNameInHppUnion' ]]}
Floating point precision control (Delphi for x64)	{$EXCESSPRECISION}
HIGHCHARUNICODE directive (Delphi)	{$HIGHCHARUNICODE}
Hints (Delphi)	{$HINTS}
HPP emit (Delphi)	{$HPPEMIT}
IFDEF directive (Delphi)	{$IFDEF}
IF directive (Delphi)	{$IF}
IFEND directive (Delphi)	{$IFEND}
IFNDEF directive (Delphi)	{$IFNDEF}
IFOPT directive (Delphi)	{$IFOPT}
Image base address	{$IMAGEBASE}
Implicit Build (Delphi)	{$IMPLICITBUILD}
Imported data	{$G},{$IMPORTEDDATA}
Include file (Delphi)	{$I},{$INCLUDE}
Input output checking (Delphi)	{$I},{$IOCHECKS}
Compiler directives for libraries or shared objects (Delphi)	{$LIBPREFIX}, {$LIBSUFFIX}, {$LIBVERSION}
Legacy IFEND (Delphi)	{$LEGACYIFEND}
Link object file (Delphi)	{$L file},{$LINK file}
Local symbol information (Delphi)	{$L+},{$LOCALSYMBOLS}
Long strings (Delphi)	{$H},{$LONGSTRINGS}
Memory allocation sizes (Delphi)	{$M},{$MINSTACKSIZE},{$MAXSTACKSIZE}
MESSAGE directive (Delphi)	{$MESSAGE }
METHODINFO directive (Delphi)	{$METHODINFO}
Minimum enumeration size (Delphi)	{$Z1},{$Z2},{$Z4},{$MINENUMSIZE 1},{$MINENUMSIZE 2},{$MINENUMSIZE 4}
NODEFINE directive (Delphi)	{$NODEFINE [ 'typeNameInHpp' [ 'typeNameInHppUnion' ]]}
NOINCLUDE (Delphi)	{$NOINCLUDE}
OBJTYPENAME directive (Delphi)	{$OBJTYPENAME typeIdent ['{B|N}typeNameInObj']}
Old type layout (Delphi)	{$OLDTYPELAYOUT ON}
Open String Parameters (Delphi)	{$P},{$OPENSTRINGS}
Optimization (Delphi)	{$O},{$OPTIMIZATION}
Overflow checking (Delphi)	{$Q},{$OVERFLOWCHECKS}
PE (portable executable) header flags (Delphi)	{$SetPEFlags},{$SetPEOptFlags}
PE header operating system version	{$SETPEOSVERSION}
PE header subsystem version	{$SETPESUBSYSVERSION}
PE header user version	{$SETPEUSERVERSION}
Pentium-safe FDIV operations (Delphi)	{$U},{$SAFEDIVIDE}
Pointer Math (Delphi)	{$POINTERMATH}
Range checking	{$R},{$RANGECHECKS}
Real48 compatibility (Delphi)	{$REALCOMPATIBILITY}
Regions	{$REGION},{$ENDREGION}
Reserved address space for resources (Delphi, Linux)	{$M},{$RESOURCERESERVE}
Resource file (Delphi)	{$R},{$RESOURCE}
RTTI directive (Delphi)	{$RTTI INHERIT|EXPLICIT}
RUNONLY directive (Delphi)	{$RUNONLY}
Run-Time Type Information (Delphi)	{$M},{$TYPEINFO}
Scoped Enums (Delphi)	{$SCOPEDENUMS}
Stack frames (Delphi)	{$W},{$STACKFRAMES}
Strong link types (Delphi)	{$STRONGLINKTYPES}
Symbol declaration and cross-reference information (Delphi)	{$Y},{$REFERENCEINFO},{DEFINITIONINFO}
Type-checked pointers (Delphi)	{$T},{$TYPEDADDRESS}
UNDEF directive (Delphi)	{$UNDEF}
Var-string checking (Delphi)	{$V},{$VARSTRINGCHECKS}
Warning messages (Delphi)	{$WARN}
Warnings (Delphi)	{$WARNINGS}
Weak packaging	{$WEAKPACKAGEUNIT}
WEAKLINKRTTI directive (Delphi)	{$WEAKLINKRTTI}
Writeable typed constants (Delphi)	{$J},{$WRITEABLECONST}
Zero-based strings (Delphi)	{$ZEROBASEDSTRINGS}

See Also

• Compiler Versions
• Conditional compilation (Delphi)