Difference between revisions of "Compiler Mode"

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== Modes ==
 
== Modes ==
  
*Free Pascal: {$mode '''FPC'''}<br/>This is the original Free Pascal compiler mode. As of version 3, It is the ''default mode'' of the compiler, so it is not necessary to explicitly add this directive.
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*Free Pascal: {$[[Mode FPC|mode '''FPC''']]}<br/>This is the original Free Pascal compiler mode. As of version 3, It is the ''default mode'' of the compiler, so it is not necessary to explicitly add this directive.
  
*Extended Free Pascal: {$mode '''OBJFPC'''} <br/>This mode adds extra functionality to the '''FPC''' mode, including [[Class | classes]], [[Interface|interfaces]] and [[language/features/exception handling|exceptions]].
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*Extended Free Pascal: {$[[Mode ObjFPC|mode '''OBJFPC''']]} <br/>This mode adds extra functionality to the '''FPC''' mode, including [[Class | classes]], [[Interface|interfaces]] and [[language/features/exception handling|exceptions]].
  
*Turbo Pascal: {$mode '''TP'''} <br/>This is the [[Turbo Pascal]] compatibility mode.
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*Turbo Pascal: {$[[Mode TP|mode '''TP''']]} <br/>This is the [[Turbo Pascal]] compatibility mode.
  
*Delphi:  {$mode '''DELPHI'''} <br/>This is the [[Delphi]] compatibility mode.  
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*Delphi:  {$[[Mode Delphi|mode '''DELPHI''']]} <br/>This is the [[Delphi]] compatibility mode.  
  
*Mac Pascal: {$mode '''MacPAS'''}<br/>The [[Mac Pascal]] compatibility mode.
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*Mac Pascal: {$[[Mode MacPas|mode '''MacPAS''']]}<br/>The [[Mac Pascal]] compatibility mode.
  
*ISO 7185 Standard Pascal: {$mode '''ISO'''}<br/>The ISO 7185 standard compatibility mode. The ISO 7185 standard is also known as [[Standard Pascal]].
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*ISO 7185 Standard Pascal: {$[[Mode iso|mode '''ISO''']]}<br/>The ISO 7185 standard compatibility mode. The ISO 7185 standard is also known as [[Standard Pascal]].
  
 
== ModeSwitch ==
 
== ModeSwitch ==

Revision as of 03:41, 12 September 2017

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The Free Pascal compiler will compile in a specific mode. Each mode dictates what syntax the compiler accepts as valid, and what it considers as invalid. The compiler mode can be set in the source code with the {$mode } compiler directive, or on the command line with the -M command line option.

Modes

  • Free Pascal: {$mode FPC}
    This is the original Free Pascal compiler mode. As of version 3, It is the default mode of the compiler, so it is not necessary to explicitly add this directive.
  • ISO 7185 Standard Pascal: {$mode ISO}
    The ISO 7185 standard compatibility mode. The ISO 7185 standard is also known as Standard Pascal.

ModeSwitch

As of version 2.3.1 of Free Pascal, the {$ModeSwitch} compiler directive has been added to allow features of a compiler mode to be selectively added to the current mode, effectively creating a custom mode. For example:

{$mode FPC}
{$ModeSwitch EXCEPTIONS}

Will add exception handling to the FPC compiler mode.

See also