[PATCH v5 5/7] arm64, jump label: detect %c support for ARM64

[Will Deacon]

On Fri, Oct 18, 2013 at 04:19:59PM +0100, Jiang Liu wrote:
> From: Jiang Liu <jiang.liu at huawei.com>
> 
> As commit a9468f30b5eac6 "ARM: 7333/2: jump label: detect %c
> support for ARM", this patch detects the same thing for ARM64
> because some ARM64 GCC versions have the same issue.
> 
> Some versions of ARM64 GCC which do support asm goto, do not
> support the %c specifier. Since we need the %c to support jump
> labels on ARM64, detect that too in the asm goto detection script
> to avoid build errors with these versions.

Acked-by: Will Deacon <will.deacon at arm.com>

The toolchain is being fixed upstream for this, but we should have the check
for older versions.

Will