generated dmd should not be the default compiler used to build the tools

[Geod24]

Transferred from: https://issues.dlang.org/show_bug.cgi?id=19382

User Basile-z reported (2018-11-09 16:00:38 CET):

for the D tools

make -f posix.mak fails when the dmd available on the machine is not the one built from sources.

we are aware that make -f posix.mak DMD=dmd works but people should not have to do that.

reported because of

https://www.reddit.com/r/d_language/comments/9vgf6j/building_dlangtools_error_127/

User Basile-z responded (2018-11-09 16:02:27 CET):

it's rather that by default it doesn't work when there's no generated dmd from the tools repository.