Hi, NixOS (http://nixos.org/) is a distribution where packages are always installed in so-called "non-standard" locations (to give you an idea, it has no `/lib' and the only file in `/bin' is `sh' :-)). Thus, when building GCC, `-B' and `-isystem' flags must be passed so that it finds the libc headers, as well as a `-Wl,-dynamic-linker' flag to pass the path to the dynamic linker. However, none of the environment variables supposedly honored by `configure' seem to suffice to propagate these flags through all the GCC build tree and all the build stages (currently, NixOS GCC builds circumvent this problems by hacking around Makefiles). What's the recommended way to achieve this? Thanks, Ludovic.
