[gstreamer-bugs] [Bug 320098] Unsupported gcc flag in gst-libs/ext/ffmpeg/libavcodec/alpha/Makefile.am

[GStreamer (bugzilla.gnome.org)]

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 GStreamer | gst-ffmpeg | Ver: 0.8.5





------- Additional Comments From Loïc Minier  2005-10-28 16:56 -------
I reported against 0.8.5 because it's the first version FTBFSing with this that
I noticed: <http://buildd.debian.org/build.php?arch=&pkg=gst-ffmpeg>.

The flag was meant temporarily to sort out optimizations and enhance gcc, and
has been deprecated since 3.3 at least.  It's removal is described at
<http://gcc.gnu.org/gcc-4.0/changes.html> as follows:
"The options -freduce-all-givs and -fmove-all-movables have been discontinued.
They were used to circumvent a shortcoming in the heuristics of the old loop
optimization code with respect to common Fortran constructs. The new (tree) loop
optimizer works differently and doesn't need those work-arounds."

I think it's not important for a 3.3 build, but might enhance the loop
optimizations slightly, if the other loop enhancement options are not present,
but I won't test.

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