building against a temporary install dir?

DJ Delorie
Wed Feb 4 01:40:00 GMT 2015

So here's what I'm trying to do...  I want to build gcc, binutils, and
newlib, run tests, and IF the tests pass, THEN install them all.
However, gcc needs an installed newlib to build it's libraries.

I tried installing newlib into $DESTDIR$PREFIX but gcc ignores
$DESTDIR during the compile.

Any ideas on how to do this, short of building and installing
everything (or at least gcc and newlib) twice?

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