On Tue, 9 Feb 2010, Will Coleda wrote:
> Ok. I've started down this path in the rm_cflags branch - it already
> has removed the perl script; I'd appreciate some tests on something
> other than gcc/gmake. I broke out the 2 files that added flags and
> those are done, and dropped several cases from CFLAGS where the
> warnings that were prevented don't occur any more.
> All that's left is to add the mechanism for manipulating @flag@ at
> interpolation time. Syntax suggestions welcome (for a little while,
> anyway. =-)
>
> @cc_warnings:s/-Wno-unused/unused/@
>
> is my current thought - we only need a way to specify a change, since
> that syntax covers addition/removal also.
At a quick glance, that looks ok. It does suffer from the same problem as
the current mechanism: It's sometimes difficult to conditionally apply.
For example, there's no easy way to say something like
For compiling src/gc/system.c on amd64 on certain flavors of Linux
with gcc 4.3.x, optimizations -O[012] are fine, but -O3 and higher
won't work.
That's a limitation of the current system too, but it could be useful to
implement. While you're poking at the CFLAGS anyway, it's something to
bear in mind, in case a natural implementation suggests itself.
--
Andy Dougherty [email protected]
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