Re: [PATCH] compiler/gcc: Raise minimum GCC version for kernel builds to 4.8
From: Nick Desaulniers
Date: Tue May 26 2020 - 11:40:29 EST
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:
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145
> > 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.