On Jan 26, 2006, at 11:00 PM, Geoffrey Kruse wrote:
On Jan 26, 2006, at 10:53 PM, James Lauser wrote:
Just running --enable-mmx errors out with "error, no memalign() but sse enabled, either disable it or use --enable-memalign-hack". Adding --enable-memalign-hack fails with "{standard input}:unknown:file contains unmatched .macro and .endmacro for: FDCT_ROW_SSE2_H1it"
This is where is gets a little complicated. Mac OSX has no memalign() function because malloc() returns aligned memory by default. So I -think- one could do something like this:
#ifndef memalign() #define memalign() malloc() #endif
I'm sure someone will correct me on the code part of it, but I am sure that malloc returns aligned memory by default.
I may have to eat my words on that part as I can't find the reference I thought I saw. While looking though, I found that when ffmpeg is configured, HAVE_MEMALIGN is defined, could this be useful in this case?
Actually, I found the reference:
Quote: "memalign doesn't exist on Mac OS. malloc always returns 16 bytes aligned memory. This macro is only defined if there is no HAVE_MEMALIGN defined by the configure script. If 16 bytes alignment not enouth there is valloc that allocates on a page bondary but there is no such function as memalign."
I hope at least some of what I said tonight is helpful to someone who knows WTF they are talking about.
Geoff
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