I cannot find it here: http://gdcproject.org/downloads
The tables untitled "Windows X86 64bit (x86_64-w64-mingw32)" and its 32 bit alter ego only list cross-compilers for arm.
In the release archive, I found this one: ftp://ftp.gdcproject.org/binaries/5.2.0/x86_64-w64-mingw32/gdc-5.2.0+2.066.1.7z Is this the latest version? It seems buggy and compile wrongly this simple code: module test; import std.stdio; void main() { real x = 1.30; writeln("x = ", x); }