Re: Compile Error v2.13.2 on Solaris SPARC

From: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Date: Jun 27, 2017, 18:55 UTC
Message-ID: <87shiljm5q.fsf@gmail.com>
In-Reply-To: <20170627182942.gpug4xaek2vba7uh@oracle.com>

On Tue, Jun 27 2017, Liam R. Howlett jotted:

> This compressed logic is causing a lot of issues.  Could we just rewrite
> it as a whole lot of #if/#else, statements to avoid running across the
> issue where the precompiler does not short-circuit the checks?  Would
> this cause any other issues?

Again, this is hopefully addressed by my 20170627121718.12078-2-avarab@gmail.com ([PATCH 1/3] sha1dc: update from my PR #36).

> A third option is to compile a small test and just -DSHA1DC_BIGENDIAN in
> the Makefile.

This would be ideal, but so far the only facility we have for that is the configure script, which there have been objections to making a hard dep in the past, thus we have various bits done via macros that would be better done via built-time compiling & testing a C program.

My memory of such discussions is hazy though, did people fundimentally object to the idea, or was it just an objection to autoconf in particular, I don't know.

If it was just autoconf maybe someone more clever at Makefile magic than me could come up with a way to compile a test program that would then define a flag that would be passed to the rest of the programs, and set up dependencies in such a way that it was done before anything else, I don't know if that's easy/possible with make.