Re: [PATCH] compiler/gcc: Raise minimum GCC version for kernel builds to 4.8

From: Guenter Roeck
Date: Tue May 26 2020 - 12:04:01 EST

Hi Nick,

On 5/26/20 8:40 AM, Nick Desaulniers wrote:
> On Tue, May 26, 2020 at 8:30 AM Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
>> On Mon, May 11, 2020 at 09:41:37PM +0100, Will Deacon wrote:
>>> It is very rare to see versions of GCC prior to 4.8 being used to build
>>> the mainline kernel. These old compilers are also known to have codegen
>>> issues which can lead to silent miscompilation:
>>> Raise the minimum GCC version to 4.8 for building the kernel and remove
>>> some tautological Kconfig dependencies as a consequence.
>> My hexagon compiler is v4.6.1, and I have been unable to find a more
>> recent version. Does anyone happen to have a pointer to a hexagon toolchain
>> with gcc 4.8 or later ?
> IIUC, hexagon moved to LLVM, though that target still has issues
> building the kernel.

That won't help me for my build tests. It is bad enough having to maintain
one compiler. I don't want to add another one to the mix, and I'll happily
leave llvm build tests for ClangBuiltLinux. Guess I'll have to stop hexagon
test builds starting with 5.8.