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Re: [RFC] Update to current automake/autoconf/libtool versions (take 2)
- From: Klee Dienes <klee at apple dot com>
- To: Zack Weinberg <zack at codesourcery dot com>
- Cc: gdb-patches at sources dot redhat dot com,binutils at sources dot redhat dot com,newlib at sources dot redhat dot com,gcc at gcc dot gnu dot org,sid at sources dot redhat dot com
- Date: Sun, 12 Jan 2003 22:32:03 -0500
- Subject: Re: [RFC] Update to current automake/autoconf/libtool versions (take 2)
On Sunday, January 12, 2003, at 12:13 PM, Zack Weinberg wrote:
The original theory was that I was trying to keep the diffs to a
minimum, and that once the switch was flipped on 2.x, we could go back
and make a lot of more interesting cleanups to the configure scripts.
But I think you're right that my changes ended up complicated enough
that I should just replace them with the modern versions; I'll do that.
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.
I didn't disable the config.cache in the top-level scripts; it's just
that the new default is for autoconf to use a null cache file unless
configured with '-C'. A good portion of my patch is actually present
solely to fix the use of a top-level cache file --- there were a number
of places where whitespace triggered the "value changed between runs"
checks in 2.5x. I did disable the target config.cache, because there
were places where things really were being run with different flags
between runs (for example, the value of libstdcxx_flags varies by
directory), and fixing that seemed beyond the scope of the initial
conversion to 2.5x.
2) Why did you disable the shared config.cache? It speeds up 'make
configure' by an order of magnitude, especially on slow machines.