[FFmpeg-devel] [PATCH] Enable building 64bit FFmpeg on MacOSX
Mon Mar 17 11:52:58 CET 2008
On Mon, Mar 17, 2008 at 12:34 PM, M?ns Rullg?rd <mans at mansr.com> wrote:
> Diego Biurrun wrote:
> > On Mon, Mar 17, 2008 at 11:28:30AM +0200, ?smail D?nmez wrote:
> >> On Mon, Mar 17, 2008 at 11:25 AM, Diego Biurrun <diego at biurrun.de> wrote:
> >> > On Sat, Mar 15, 2008 at 05:03:22PM +0200, ?smail D?nmez wrote:
> >> > > To workaround this attached patch checks if CFLAGS contains -m64 and
> >> > > then sets 64bit flags. This is similar to already existing -m32 check
> >> > > in configure.
> >> >
> >> > I'd rather have you find a proper solution, this is quite ugly...
> >> Suggestions welcome.
> > Mans?
> > I have no better solutions available, so I'll apply your patch if you
> > update it to match HEAD again. Unless somebody has better ideas...
> The correct way would be to try compiling something that will fail on
> one arch or the other. It's a trivial bit of assembler (use %rax or so),
> but there is plain C code using the HAVE_FAST_64BIT flag, which would
> get the wrong value if inline asm is not supported. Another possibility
> might be to check the size of long and/or pointer types (using nm).
How does the attached patch look?
Never learn by your mistakes, if you do you may never dare to try again.
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