compiler directive

基本解释

DELPHICOMPATIBILITY compiler directive and project option
$DELPHICOMPATIBILITY编译器指令与项目选项
In addition to the listed options, all single-letter compiler directives can be specified on the command line, as described in Compiler directive options.
在附加的选项列表中，所有的单字符编译器指令都可以在命令行编译中使用，详情请参照：编译器指令。
For example, the compiler directive for an x86 architecture could have a flag -DCMP_x86 with a directive like -DCMP_PSERIES for some code specific to Linux on pSeries servers.
例如，用于 x86 体系结构的编译器指示符应该有 -DCMP_x86 标记，用于某些特定于 pSeries 服务器上的 Linux 的代码应该有 -DCMP_PSERIES 指示符。