[Bug jit/87808] gcc_lib_dir is missing from libgccjit's search path when driver is not installed

[doko at debian dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87808

--- Comment #7 from Matthias Klose <doko at debian dot org> ---
a patch was posted at
https://gcc.gnu.org/ml/gcc-patches/2019-03/msg01045.html