可以生成自定义编译器错误吗？如果是这样，怎么办？ [英] Can I generate a custom compiler error? If so, how?

问题描述

这是我想要做的我有一个项目必须在某些版本的Delphi或更高版本中编译。我想使用条件编译器指令来测试Delphi版本，然后使用自定义消息生成自定义编译器错误。能够生成一个自定义的编译器警告或提示也将被抛弃，如果一个错误是不可能的。

当然，我可以在条件代码中放一些不可编译的giberish段，没关系但是我的问题是有条件地生成定制编译器错误吗？

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谢谢Johan和Serg。 / p>

这是解决方案，更多关于这个问题的细节。我有一个最初在Delphi 2007中构建的应用程序。它包含要连接到Web服务的Internet Direct组件。这些使用SSL。我最近将我的SSL库升级到更高版本，而这些版本并不能很好地与Delphi 2007 Indy组件一起使用。我现在添加了以下编译器指令，以确保不再使用Delphi 2007或更早版本编译此应用程序：

  {$ IF CompilerVersion< = 19.0} // Delphi 2007 = 19.0 
 {$ MESSAGE Error'此项目必须在Delphi 2009或更高版本中编译} 
 {$ IFEND} 
  

解决方案

您可以使用：

  {$ Message HINT | WARN | ERROR | FATAL'text string'} 
  

  {$ MESSAGE'Boo！'}发出提示
 {$消息提示'喂猫'}发出提示
 {$ messaGe警告'看起来像下雨'}发出警告
 {$消息错误'未实现'}发出错误，继续编译
 {$ Message Fatal'Bang。 Yer死了'}发出错误，终止编译器
  

请参阅： http://docs.embarcadero.com/products/rad_studio/delphiAndcpp2009/HelpUpdate2/EN /html/devcommon/compdirsmessagedirective_xml.html

这在Delphi 6及更高版本中有效。

Here is what I want to do. I have a project that must be compiled in some version of Delphi or later. I would like to use a conditional compiler directive to test the Delphi version, and then cause a custom compiler error to be generated with a custom message. Being able to generate a custom compiler warning or hint would also be adaquate if an error is not possible.

Sure, I could put some un-compilable giberish in the conditional code segment, and that's fine. But my question is "Can I generate, conditionally, a custom compiler error?"

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Thank you Johan and Serg.

Here is the solution, and more details about the issue. I have an application that was originally built in Delphi 2007. It includes Internet Direct components to attach to a Web service. These use SSL. I recently upgraded my SSL libraries to a later version, and these don't play so well with the Delphi 2007 Indy components. I have now added the following compiler directives to ensure that this application will no longer be compiled with Delphi 2007 or earlier:

{$IF CompilerVersion <= 19.0} // Delphi 2007 = 19.0
   {$MESSAGE Error 'This project must be compiled in Delphi 2009 or later'}
{$IFEND}

解决方案

You can use:

{$Message HINT|WARN|ERROR|FATAL 'text string' } 

{$MESSAGE 'Boo!'}                   emits a hint 
{$Message Hint 'Feed the cats'}     emits a hint 
{$messaGe Warn 'Looks like rain.'}  emits a warning 
{$Message Error 'Not implemented'}  emits an error, continues compiling 
{$Message Fatal 'Bang.  Yer dead.'} emits an error, terminates compiler 

See: http://docs.embarcadero.com/products/rad_studio/delphiAndcpp2009/HelpUpdate2/EN/html/devcommon/compdirsmessagedirective_xml.html

This works in Delphi 6 and later.

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