[MPlayer-dev-eng] [PATCH] fix explicitly setting CPU options in configure + cosmetics

[Diego Biurrun]

Arpi told me on IRC he has mixed feelings about this patch - there has
to be somebody else who can comment on this patch..  Please somebody
speak up!

Diego

Diego Biurrun writes:
 > Resending.  Last time around I only got a comment from Alex who
 > pointed out a bug in the cosmetics part.  It's fixed now.
 > 
 > Hello Team!
 > 
 > I noticed some time ago that configure ignores CPU option settings
 > from the command line, like --disable-mmx or --disable-mtrr.  The
 > problem is that CPU feature detection etc happens before the main
 > command line argument parsing.  My patch adds a small CPU option
 > command line parsing snippet in front of the CPU section, making those
 > options produce the desired effect.
 > 
 > A nicer solution would probably be just moving all of the command line
 > parsing to the beginning of configure, but that requires more invasive
 > changes.  If you wish I might have a go at that, but in the meantime
 > my patch should be sufficient.
 > 
 > OK to commit?
 > 
 > Diego
 > 
 > 
 > Index: configure
 > ===================================================================
 > RCS file: /cvsroot/mplayer/main/configure,v
 > retrieving revision 1.639
 > diff -u -r1.639 configure
 > --- configure	19 Jan 2003 16:42:25 -0000	1.639
 > +++ configure	19 Jan 2003 17:56:55 -0000
 > @@ -596,6 +596,29 @@
 >  
 >  fi
 >  
 > +# CPU options have to be set here, they have no effect if set later.
 > +for ac_option do
 > +  case "$ac_option" in
 > +  --enable-mtrr)	_mtrr=yes	              ;;
 > +  --disable-mtrr)	_mtrr=no	              ;;
 > +  --enable-altivec)     _altivec=yes                  ;;
 > +  --disable-altivec)    _altivec=no                   ;;
 > +  --enable-sse)         _sse=yes                      ;;
 > +  --disable-sse)        _sse=no                       ;;
 > +  --enable-sse2)        _sse2=yes                     ;;
 > +  --disable-sse2)       _sse2=no                      ;;
 > +  --enable-mmx2)        _mmx2=yes                     ;;
 > +  --disable-mmx2)       _mmx2=no                      ;;
 > +  --enable-3dnow)       _3dnow=yes                    ;;
 > +  --disable-3dnow)      _3dnow=no       _3dnowex=no   ;;
 > +  --enable-3dnowex)     _3dnow=yes      _3dnowex=yes  ;;
 > +  --disable-3dnowex)    _3dnowex=no                   ;;
 > +  --enable-mmx)         _mmx=yes                      ;;
 > +  # 3Dnow! requires MMX
 > +  --disable-mmx)        _3dnow=no _3dnowex=no _mmx=no _mmx2=no ;;
 > +  esac
 > +done
 > +
 >  
 >  if [ "$host_arch" = alpha ]; then
 >    echocheck "CPU type"