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git-svn-id: file:///var/local/repositories/ffmpeg/trunk@19459 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

Closes issue 1273.


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Not all compilers claiming to be gcc support this attribute.

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It is possible that the compiler requires flags set by the --cpu
option, so we should not attempt to run it before those flags have
been added.

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-target *-dvd works correctly.

Patch by Lou Logan <$firstname@fakeoutdoorsman com>.


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We do not issue similar warnings for other architectures, and we
generally assume users know what they want.

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for the 0 codebook.


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git-svn-id: file:///var/local/repositories/ffmpeg/trunk@19442 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

patch by Martin Storsjö, martin martin st


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optimized out by gcc, thus rendering the test useless.
This new test throws a warning in mingw-w64, but that should not be a problem.


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@19440 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

The auto-vectoriser in gcc is enabled by default at -O3 since version
4.3.  However, it provides no speed benefit, but does produce incorrect
code on many targets.  Disabling it for gcc should give more reliable
builds.

If the adventurous want it back, they can edit the makefile themselves.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@19439 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

Altivec, NEON, and SSE require more alignment than standard malloc()
guarantees, whereas MMX does not.  Update checks to reflect this.

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Fixes issue 1269.


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(wherein av_open_input_file assumes memory ownership).
Patch by Art Clarke a<surname> xuggle com


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If ff_neterrno() is checked instead of errno, that's probably what should be
used in the return value.
As a sideeffect, this gives better compatibility with Windows (CE), where
network errors aren't visible in errno.)
patch by Martin Storsjö, martin martin st


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Patch by Janne Grunau <j?nne-f?mpeg@jannau?net>.


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On Windows CE, the Winsock library name is ws2, not ws2_32.
patch by Martin Storsjö, martin martin st


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Nothing from the header was used and it caused trouble on Windows CE.


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This allows use of the add_*flags functions in the compiler detection
section.

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Patch by Martin Storsjo <martin at martin dot st>

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Patch by Martin Storsjo <martin at martin dot st>

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This fixes compilation on WinCE, which does not support _lseeki64.
patch by Ismail Dönmez, ismail namtrac org


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Patch by Art Clarke [aclark , xuggle . com]

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This can be used to map gcc-type flags to equivalents with other
compilers.

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