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ffmpeg: disable for ARMv7-M

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In the ffmpeg code, libavutil/arm/asm.S makes some assumption about the
ARM architecture for which the code is built. Only ARMv4, ARMv5, ARMv6
and ARMv7-A is supported. Due to this, object files built out of
ARM-optimized assembly code have the wrong architecture information,
causing a failure at link time.

Adding ARMv7-M support would be possible, but it doesn't exist yet in
ffmpeg, and it's pretty unlikely that ffmpeg will ever be needed on an
ARMv7-M platform, so this commit takes the simple approach of disabling
ffmpeg for ARMv7-M.

Fixes:

  http://autobuild.buildroot.net/results/ca4c67b093afd6f14349fcdc87b02e0480172e8c/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Thomas Petazzoni 2016-08-10 23:29:02 +02:00
parent de1aecde52
commit 9fb1170159
1 changed files with 3 additions and 1 deletions
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4
package/ffmpeg/Config.in
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@ -2,7 +2,9 @@ config BR2_PACKAGE_FFMPEG_ARCH_SUPPORTS
bool
# fenv.h lacks FE_INVALID, FE_OVERFLOW & FE_UNDERFLOW on nios2
# ffmpeg's configure script only supports mips64 (r1) variant
default y if !BR2_nios2 && !BR2_mips_64r2 && !BR2_mips_64r6
# No support for ARMv7-M in the ARM assembly logic
default y if !BR2_nios2 && !BR2_mips_64r2 && !BR2_mips_64r6 && \
!BR2_ARM_CPU_ARMV7M
menuconfig BR2_PACKAGE_FFMPEG
bool "ffmpeg"