DFLAGS and gdc

[Joseph Rushton Wakeling via D.gnu]

On 08/07/14 17:58, Iain Buclaw via D.gnu wrote:
> My stance at the moment is that DFLAGS should be recognised by the
> build tool, not the compiler.

I wonder if John's specific concern may be to do with how dmd uses the DFLAGS 
environment variable to specify the standard import and library paths.

Is there an equivalent for gdc, or does it simply assume that imports and 
libraries will be in well-defined locations relative to where the executable is 
located?