[Ffmpeg-devel] Re: [PATCH] Machine endian bytestream functions
Fri Mar 16 10:18:45 CET 2007
Michael Niedermayer <michaelni at gmx.at> writes:
>> >> x86_64|amd64)
>> >> arch="x86_32"
>> >>+ enable fast_unaligned
>> >> canon_arch="`$cc -dumpmachine | sed -e 's,\([^-]*\)-.*,\1,'`"
>> >> if [ x"$canon_arch" = x"x86_64" -o x"$canon_arch" = x"amd64" ]; then
>> >> if [ -z "`echo $CFLAGS | grep -- -m32`" ]; then
>> >maybe configure should rather have a generic test which checks
>> >which version is faster? (it would be much easier to maintain
>> >instead of keeping track what is faster for which cpu ...)
>> Sorry, but I failed to find a simple way for this in configure. Three
>> issues came up:
>> 1. Unaligned data accesses will crash on some processors, and I don't
>> think it's a good idea to have configure throw exceptions. (e.g. it
>> would open the "Send report" dialog on Windows).
> since when does windows support such hardware? and no real OS opens a
> dialog box if a program crahshes furthermore you could install a handler
> which catches the exception
Windows NT4 runs on Alpha, and Windows CE runs on various CPUs. I
don't think any of these can run the ffmpeg configure though.
mans at mansr.com
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