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toolchain/toolchain-buildroot: PPC64(LE) support in musl requires ALTIVEC

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musl currently assumes all PPC64(LE) CPUs support ALTIVEC instructions.

However, there are exceptions (such as the e5500) for which musl builds
ultimately generate illegal instructions for the targets.

Disable musl if the PPC64(LE) CPU does not support ALTIVEC instructions.

This patch addresses the issues seen here:
  https://gitlab.com/kubu93/toolchains-builder/-/jobs/418092743
  https://gitlab.com/kubu93/toolchains-builder/-/jobs/418092744

musl mailing list thread:
  https://www.openwall.com/lists/musl/2020/02/03/10

Signed-off-by: Vincent Fazio <vfazio@xes-inc.com>
Reviewed-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
This commit is contained in:
Vincent Fazio 2020-02-04 15:35:48 -06:00 committed by Yann E. MORIN
parent e2c0f234ed
commit 20c267f2e9
1 changed files with 1 additions and 0 deletions
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toolchain/toolchain-buildroot/Config.in
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@ -86,6 +86,7 @@ config BR2_TOOLCHAIN_BUILDROOT_MUSL
BR2_mips64el || BR2_or1k || BR2_powerpc || BR2_powerpc64 || \
BR2_powerpc64le || BR2_RISCV_64 || BR2_sh || BR2_x86_64
depends on !BR2_powerpc_SPE # not supported, build breaks
depends on !(BR2_powerpc64 || BR2_powerpc64le) || BR2_POWERPC_CPU_HAS_ALTIVEC
# sh2 nommu is supported by musl, but we don't have support
# for it in Buildroot.
depends on BR2_USE_MMU