From mboxrd@z Thu Jan 1 00:00:00 1970 From: Willy Tarreau Subject: Re: Alternative compilers to GCC/Clang Date: Tue, 2 Feb 2021 06:33:08 +0100 Message-ID: <20210202053307.GB28542@1wt.eu> References: Reply-To: linux-kernel@vger.kernel.org Mime-Version: 1.0 Return-path: Content-Disposition: inline In-Reply-To: List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Amy Parker Cc: linux-kernel@vger.kernel.org, linux-gcc@vger.kernel.org, linux-kbuild@vger.kernel.org Hi Amy, On Mon, Feb 01, 2021 at 03:31:49PM -0800, Amy Parker wrote: > Hello! My name's Amy. I'm really impressed by the work done to make > Clang (and the LLVM toolchain overall) able to compile the kernel. > Figured I might as well donate my monkey hours to helping make it run > on other compilers as well. I haven't been able to find any that use > the same arguments structure as GCC and Clang (read: you can pass it > in as CC=compilername in your $MAKEOPTS). Any compilers along that > route anyone here has worked with that I could work with? If you're interested, you should have a look at TCC (tiny CC) : https://repo.or.cz/tinycc.git It compiles extremely fast, implements some subsets of gcc (a few attributes for example), but is far from being able to compile a kernel (at least last time I checked). Its speed makes it very convenient for development. I made some efforts to make haproxy support it (and provided some fixes to tcc) as it compiles the whole project in 0.5 second instead of ~10 seconds with a modern gcc. It could probably compile a kernel in 15-20 seconds if properly supported, and this could be particularly handy for development and testing. Regards, Willy