[OE-core] [PATCH v2] machine/arch-riscv: Fix newlib and baremetal builds

[Alistair Francis]

Fix the following errors for newlib and baremetal libcs:
  ld: unrecognized option '--hash-style=sysv'
  ld: unrecognized option '--hash-style=gnu'

Setting LINKER_HASH_STYLE to empty for just newlib and baremetal doesn't
work as GCC still ends up being built with --hash-style=gnu which causes
failures when using a built newlib SDK.

Signed-off-by: Alistair Francis <alistair.francis at wdc.com>
---
 meta/conf/machine/include/riscv/arch-riscv.inc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/meta/conf/machine/include/riscv/arch-riscv.inc b/meta/conf/machine/include/riscv/arch-riscv.inc
index 19f8f3e211..f3edcc39f7 100644
--- a/meta/conf/machine/include/riscv/arch-riscv.inc
+++ b/meta/conf/machine/include/riscv/arch-riscv.inc
@@ -8,3 +8,6 @@ TUNE_CCARGS .= ""
 
 # QEMU usermode fails with invalid instruction error (For riscv32)
 MACHINE_FEATURES_BACKFILL_CONSIDERED_append = "${@bb.utils.contains('TUNE_FEATURES', 'riscv32', ' qemu-usermode', '', d)}"
+
+# --hash-style is unsupported
+LINKER_HASH_STYLE = ""
-- 
2.23.0