On Thu, 19 Oct 2006 20:43:28 +0000 (UTC) "Duncan" <[EMAIL PROTECTED]> wrote:
> Simon Stelling <[EMAIL PROTECTED]> posted [EMAIL PROTECTED],
> excerpted below, on Thu, 19 Oct 2006 17:42:20 +0200:
>
> > If you want to add instead of replace, CFLAGS="${CFLAGS} -fadded"
> > will do the job. Removing is done with CFLAGS=" ${CFLAGS}" ;
> > CFLAGS=${CFLAGS//-fremoved}
FWIW I think Simon meant:
CFLAGS=" ${CFLAGS}" ; CFLAGS=${CFLAGS// -fremoved}
assuming that adding the space was done to catch flags that match part
of longer flags.
> > So you can do effectively anything, given you know the bash
> > tricks ;)
>
> Hey, thanks! The add was a no-brainer here, but I hadn't thought
> about the remove trick yet. Very nice! =8^)
Watch also for flags that start with the same string; for example:
CFLAGS=${CFLAGS// -finline-functions}
would end up with "-called-once" in CFLAGS, if
"-finline-functions-called-once" was set.
Another easy one is doing:
CFLAGS=${CFLAGS// -g}
when CFLAGS has "-ggdb2" or similar set...
--
Kevin F. Quinn
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