[Bug d/121491] D: multiple targets: config.d and related files not found/built/installed

[dave at killthe dot net via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121491

--- Comment #2 from Dave Blanchard <dave at killthe dot net> ---
See the file gccreport-dlang/scripts/install/stage1/cross/gcc for
cross-compiler configure args