compilers w/ different language features: version block

[kdevel]

A code fragment using static foreach

https://forum.dlang.org/thread/jiefcxwqbjzqnmtazkwy@forum.dlang.org#post-beruryblsptnunsowjph:40forum.dlang.org

does not compile with the current GDC (GCC 4.9.4 and 5.5.0). I 
tried to encapsulate this code into a version block but GDC still 
checks the syntax. Is there any more elegant way besides of using 
a mixin?:

    version (DigitalMars) {
       pragma (msg, "DMD");
       mixin (`
       enum typenames = ["float", "double", "real", "short", 
"int", "long"];
       static foreach (s; typenames) {
          pragma (msg, s);
          disp[s] = mixin ("&mymain!" ~ s);
       }
       `);
    }