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toolchain-buildroot: allow to build ppc64(le) musl toolchains

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Latest musl release supports ppc64 architecture (both big endian and
little endian), so this commit adds support for this.

Since musl implements the ELFv2 ABI for both big-endian and
little-endian PowerPC64, we have to force using this ABI on PowerPC64
big endian (normally elfv1 is the default).

Also, only gcc 6.x has the necessary changes to support musl on PowerPC
64, so we restrict the gcc version selection accordingly.

Tested with Qemu for big endian and little endian configurations.

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
[Thomas: add comment about the ABI flag in gcc.mk, rework commit log.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Waldemar Brodkorb
2016-08-18 08:37:29 +02:00
committed by Thomas Petazzoni
parent 2970711de7
commit 5ab751ca44
3 changed files with 19 additions and 1 deletions
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2
toolchain/toolchain-buildroot/Config.in
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@@ -70,7 +70,7 @@ config BR2_TOOLCHAIN_BUILDROOT_MUSL
bool "musl"
depends on BR2_aarch64 || BR2_arm || BR2_armeb || BR2_i386 || \
BR2_microblaze || BR2_mips || BR2_mipsel || BR2_powerpc || \
BR2_sh || BR2_x86_64
BR2_powerpc64 || BR2_powerpc64le || BR2_sh || BR2_x86_64
depends on !BR2_powerpc_SPE # not supported, build breaks
# Unsupported for MIPS R6
depends on !BR2_mips_32r6 && !BR2_mips_64r6