How to pass flags to gnatmake when building gcc?

[xorquewasp@googlemail.com]

Hello.

I'm trying to compile GCC 4.2.3 as a cross compiler on PPC darwin.
I'm using the compiler from macada.org to build GCC which unfortunately
has a bug that requires passing '-largs -L/usr/local/ada-4.2/lib -lgcc_s.1'
to gnatmake in order to compile executables.

I can't seem to work out how to tell the GCC build system this, however.
Setting LDFLAGS doesn't seem to work.

Any ideas?