April 14, 2015
I get the following message from dub when using "--build=release":

Linking...
.dub/build/myprogram-release-linux.posix-x86_64-dmd_2067-C1A5273464ACE9961E3F3BA6AC04084B/abairtts.o:(.data._D65TypeInfo_xC3std5range10interfaces18__T10InputRangeTiZ10InputRange6__initZ+0x10): undefined reference to `_D64TypeInfo_C3std5range10interfaces18__T10InputRangeTiZ10InputRange6__initZ'
collect2: error: ld returned 1 exit status
--- errorlevel 1

DUB version 0.9.23, built on Apr  3 2015
dmd 2.067.0

Also, if I set the flags manually (dlfags[1]), they are ignored and dub build in debug mode.

[1] now -boundscheck=off, instead of -noboundscheck
April 15, 2015
On Tuesday, 14 April 2015 at 15:22:27 UTC, Chris wrote:
> I get the following message from dub when using "--build=release":
>
> Linking...
> .dub/build/myprogram-release-linux.posix-x86_64-dmd_2067-C1A5273464ACE9961E3F3BA6AC04084B/abairtts.o:(.data._D65TypeInfo_xC3std5range10interfaces18__T10InputRangeTiZ10InputRange6__initZ+0x10): undefined reference to `_D64TypeInfo_C3std5range10interfaces18__T10InputRangeTiZ10InputRange6__initZ'
> collect2: error: ld returned 1 exit status
> --- errorlevel 1
>
> DUB version 0.9.23, built on Apr  3 2015
> dmd 2.067.0
>
> Also, if I set the flags manually (dlfags[1]), they are ignored and dub build in debug mode.
>
> [1] now -boundscheck=off, instead of -noboundscheck

there is a bug, add the --combined flag and it should work.
can't remember which bug.