[Buildroot] [PATCH 2/2] package/xenomai: disable cobalt for armv8
Romain Naour
romain.naour at gmail.com
Tue Feb 2 20:56:14 UTC 2021
When a armv8 target is used in 32bits mode, xenomai fail to
detect the ARM architecture and abord the build.
(__ARM_ARCH_7A__ is not defined for armv8 cpus).
There are no autobuilder failures for this issue since cobalt
is never selected, but the following defconfig:
BR2_arm=y
BR2_cortex_a53=y
BR2_ARM_FPU_NEON_VFPV4=y
BR2_TOOLCHAIN_EXTERNAL=y
BR2_PACKAGE_XENOMAI=y
BR2_PACKAGE_XENOMAI_COBALT=y
This was initialy reproduced using the raspberrypi3_defconfig
with Xenomai package with cobalt selected.
In order to use Xenomai on raspberrypi3 in 32 bits mode,
you have to select BR2_cortex_a7. This partially revert the
commit a13a388dd444ee047f0e7b8c10f5e6c235ec5004.
See:
https://gitlab.denx.de/Xenomai/xenomai/-/blob/v3.1/lib/cobalt/arch/arm/include/asm/xenomai/features.h#L52
Signed-off-by: Romain Naour <romain.naour at gmail.com>
---
package/xenomai/Config.in | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/package/xenomai/Config.in b/package/xenomai/Config.in
index b1b02373c3..e060bcc46f 100644
--- a/package/xenomai/Config.in
+++ b/package/xenomai/Config.in
@@ -1,8 +1,8 @@
config BR2_PACKAGE_XENOMAI_COBALT_ARCH_SUPPORTS
bool
default y
- depends on BR2_i386 || BR2_x86_64 || (BR2_arm && !BR2_ARM_CPU_ARMV7M) || \
- BR2_powerpc
+ depends on BR2_i386 || BR2_x86_64 || BR2_powerpc || \
+ (BR2_arm && !BR2_ARM_CPU_ARMV7M && !BR2_ARM_CPU_ARMV8A)
comment "xenomai needs a glibc or uClibc toolchain w/ threads"
depends on BR2_USE_MMU
--
2.29.2
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