Avoid a recursive make to speed things up a bit. A sparc-elf build shows installed objects & libs produce same code.
Commit 8d75828378 ("libgloss: merge sparc configure script up a level") missed including the sparc acinclude.m4 file which meant none of the sparc-specific vars were propagating to the sub-makefile.
8d75828378
Move the minor sparc-specific logic to a dedicated variable so we can merge its configure logic up a level.
Mike Frysinger