noun
feature test macro
A macro used in software development to test whether a particular feature or functionality is present or enabled.
この機能試験マクロは、コンパイル時に特定の機能が有効かどうかをチェックします。
This feature test macro checks whether a specific feature is enabled at compile time.
Compound of 機能試験 (feature test) and マクロ (macro), a direct borrowing from English computing terminology.