[Bug driver/70783] -spec option behavior is different to implicit spec file

[andreas.g.jhoss at gmx dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70783

--- Comment #4 from Andreas.G.JHOSS <andreas.g.jhoss at gmx dot de> ---
Maybe my first post was not clear enough. I have done exactly this.
Dumped the specs file and then did some small changes and added this substitue
rule

I have verified that I put it to the correct place.
And this specs file will be only correct done when I call the gcc -with
--specs.
And it was working with older gcc versions