compiler search paths

[Zack Weinberg]

On Wed, 01 Apr 1998 16:37:25 -0800, Jim Wilson wrote:
>	Is it possible to set the search paths of -B, -L, -I etc. in the specs
>	file?
>
>It is possible.  It is not recommended.  You should configure and install
>gcc so that the search paths are correct to begin with.

There's a sticky bootstrap problem when trying to arrange a libc6
native compiler when libc6 is installed in some strange location.  I
don't want to break the entire system if devel libc is unstable one
week, so I keep it in a corner of the filesystem.

The goal is to have a compiler driver that can be switched between
libc5 and libc6 with -b options.  A first approximation is available
by editing the specs appropriately and adding some symlinks.  That
compiler can then be used as BOOT_CC to 3-stage a native compiler, but
I don't see how I get out of editing somebody's specs -- there is only
one compiler driver, and it will have one or other set of paths
hardcoded.

Or is there some easy way to do this that I'm overlooking?

zw