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Package-specific compiler directives

The following table lists package-specific compiler directives that can be inserted into source code.

Directive	Purpose
{$IMPLICITBUILD OFF}	Prevents a package from being implicitly recompiled later. Use in .dpk files when compiling packages that provide low-level functionality, that change infrequently between builds, or whose source code will not be distributed.
{$G-} or {$IMPORTEDDATA OFF}	Disables creation of imported data references. This directive increases memory-access efficiency, but prevents the unit where it occurs from referencing variables in other packages.
{$WEAKPACKAGEUNIT ON}	Packages unit weakly.
{$DENYPACKAGEUNIT ON}	Prevents unit from being placed in a package.
{$DESIGNONLY ON}	Compiles the package for installation in the IDE. (Put in .dpk file.)
{$RUNONLY ON}	Compiles the package as runtime only. (Put in .dpk file.)

Including {$DENYPACKAGEUNIT ON} in source code prevents the unit file from being packaged. Including {$G-} or {$IMPORTEDDATA OFF} may prevent a package from being used in the same application with other packages.

Other compiler directives may be included, if appropriate, in package source code.

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译文

包特有的编译指示

下表列出了包特有的编译指示，它们可以被插入到源代码中。

编译指示	用途
{$IMPLICITBUILD OFF}	防止包在今后被隐含重编译。当编译的包提供低级功能，并且包几乎不会改变或其源代码不发布时，应使用该开关。
{$G-} or {$IMPORTEDDATA OFF}	禁止创建或引入数据引用。使用该开关会提高内存访问效率，但会禁止包在编译时对其他包中变量的引用。
{$WEAKPACKAGEUNIT ON}	低效封装单元（见编译指示：低效包装Weak packaging）
{$DENYPACKAGEUNIT ON}	防止被置于包中的单元。
{$DESIGNONLY ON}	编译并将包安装到IDE。（置于.dpk文件中）
{$RUNONLY ON}	仅作为运行时包编译。（置于.dpk文件中）

源代码中包括编译指示 {$DENYPACKAGEUNIT ON} 将防止被置于包中的单元文件。包括编译指示 {$G-} 或 {$IMPORTEDDATA OFF} 可以防止在同一应用程序中包被其他的包使用。

如果适当，在包的源代码中还可以包括其他的编译指示。

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Package-specific compiler directives

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译文

包特有的编译指示

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