* [Buildroot] [git commit] ffmpeg: disable for ARMv7-M
@ 2016-08-11 13:03 Thomas Petazzoni
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From: Thomas Petazzoni @ 2016-08-11 13:03 UTC (permalink / raw)
To: buildroot
commit: https://git.buildroot.net/buildroot/commit/?id=9fb11701599177c5303675193b34fe5423787dbd
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master
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>
---
package/ffmpeg/Config.in | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/package/ffmpeg/Config.in b/package/ffmpeg/Config.in
index 096ff95..3a7bfd3 100644
--- a/package/ffmpeg/Config.in
+++ b/package/ffmpeg/Config.in
@@ -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"
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2016-08-11 13:03 [Buildroot] [git commit] ffmpeg: disable for ARMv7-M Thomas Petazzoni
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