[RFC] Update to current automake/autoconf/libtool versions (take 2)

[Zack Weinberg]

Klee Dienes <klee@apple.com> writes:

> The following is the current state-of-the art of my autoconf-2.5x
> conversion of the gcc/gdb/binutils repositories.

Two general comments:

1) I notice that you made the existing pseudo-AC_PROG_CC/CXX macros
   work again with 2.5x; this is wrong.  Get rid of them entirely,
   use the canonical AC_PROG_CC/CXX, and if they don't work right,
   patch autoconf until they do.

2) Why did you disable the shared config.cache?  It speeds up 'make
   configure' by an order of magnitude, especially on slow machines.

zw