Possible Bug with Building on Current Tree

[nick]

Greetings All,

Probably me doing something stupid what I am configuring gcc on current git with:
$PWD/../gcc/configure --prefix=$HOME/GCC-7.0.1 --enable-languages=c,c++,fortran,go

This is in a directory called objdir for building gcc as according to docs. It makes
with this:

make: *** No rule to make target '../build-x86_64-pc-linux-gnu/libiberty/libiberty.a', needed by 'build/genmodes'.  Stop.
make: *** Waiting for unfinished jobs....
tm_p.h is unchanged
config.h is unchanged
bconfig.h is unchanged
tm.h is unchanged


I tried googling on line and tried using a clean tree which was the fix before. That doesn't find it, either
the build is currently broken as it worked yesterday or something is wrong with my config command.

Nick