5259a39c7a
From [1]
"GCC 10 (PR 91233) won't silently allow registers that are not architecturally
available to be present in the clobber list anymore, resulting in build failure
for mips*r6 targets in form of:
...
.../sysdep.h:146:2: error: the register ‘lo’ cannot be clobbered in ‘asm’ for the current target
146 | __asm__ volatile ( \
| ^~~~~~~
This is because base R6 ISA doesn't define hi and lo registers w/o DSP extension.
This patch provides the alternative clobber list for r6 targets that won't include
those registers."
Since kernel 5.4 and mips support for generic vDSO [2], the kernel fails to build
for mips r6 cpus with gcc 10 for the same reason as glibc.
[1] https://sourceware.org/git/?p=glibc.git;a=commit;h=020b2a97bb15f807c0482f0faee2184ed05bcad8
[2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=24640f233b466051ad3a5d2786d2951e43026c9d
Fixes:
https://gitlab.com/kubu93/buildroot/-/jobs/655618363
https://gitlab.com/kubu93/buildroot/-/jobs/655618364
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
36 lines
864 B
Plaintext
36 lines
864 B
Plaintext
# Architecture
|
|
BR2_mips64el=y
|
|
BR2_mips_64r6=y
|
|
BR2_MIPS_NABI64=y
|
|
|
|
# System
|
|
BR2_SYSTEM_DHCP="eth0"
|
|
|
|
# Filesystem
|
|
BR2_TARGET_ROOTFS_EXT2=y
|
|
# BR2_TARGET_ROOTFS_TAR is not set
|
|
|
|
# Image
|
|
BR2_ROOTFS_POST_IMAGE_SCRIPT="board/qemu/post-image.sh"
|
|
BR2_ROOTFS_POST_SCRIPT_ARGS="$(BR2_DEFCONFIG)"
|
|
|
|
# Linux headers same as kernel, a 5.4 series
|
|
BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_4=y
|
|
|
|
# Kernel
|
|
BR2_LINUX_KERNEL=y
|
|
BR2_LINUX_KERNEL_CUSTOM_VERSION=y
|
|
BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.4.42"
|
|
BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
|
|
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/mips64r6el-malta/linux.config"
|
|
BR2_LINUX_KERNEL_VMLINUX=y
|
|
BR2_GLOBAL_PATCH_DIR="board/qemu/mips64r6el-malta/patches"
|
|
|
|
# Serial port config
|
|
BR2_TARGET_GENERIC_GETTY=y
|
|
BR2_TARGET_GENERIC_GETTY_PORT="ttyS0"
|
|
|
|
# host-qemu for gitlab testing
|
|
BR2_PACKAGE_HOST_QEMU=y
|
|
BR2_PACKAGE_HOST_QEMU_SYSTEM_MODE=y
|