chore: fix error functions in Makefile (#970)

`$(error ...)` (and `$(warning ...)`) functions in a Makefile can't be indented - if they are make displays a `*** commands commence before first target. Stop.` error.
This commit is contained in:
Andrew Scheller 2016-12-11 22:45:26 +00:00 committed by Juan Cruz Viotti
parent db379bd341
commit c4a92d772d