インテル® Fortran コンパイラー 19.0 デベロッパー・ガイドおよびリファレンス
The ATTRIBUTES directive option EXTERN specifies that a variable is allocated in another source file. EXTERN can be used in global variable declarations, but it must not be applied to dummy arguments.
!DIR$ ATTRIBUTES EXTERN :: var
var |
Is the variable to be allocated. |
This option must be used when accessing variables declared in other languages.