[Buildroot] [Bug 11996] opencv3 SIGILL on Cortex-A5 with VFPv4-D16

bugzilla at busybox.net bugzilla at busybox.net
Mon Jul 1 21:47:09 UTC 2019


--- Comment #1 from Arnout Vandecappelle <arnout at mind.be> ---
> I think this code in opencv3.mk is wrong (or maybe the ARM fpu config options
> are wrong):
> ifeq ($(BR2_ARCH_IS_64):$(BR2_ARM_CPU_HAS_VFPV3),:y)
> else
> endif
> Apparently I have BR2_ARM_CPU_HAS_VFPV3 set (even though I only have the 
> -D16 version), but when you pass -DENABLE_VFPV3=ON to OpenCV, it passes 
> -mfpu=vfpv3 to the compiler and this is what's causing the SIGILL.

If the only thing that ENABLE_VFPV3 does is to set the -mfpu=... option, then
we should just always set it to OFF, because we already pass that option.

Same for NEON, by the way.

You are receiving this mail because:
You are on the CC list for the bug.

More information about the buildroot mailing list