From mboxrd@z Thu Jan 1 00:00:00 1970 From: Luc Van Oostenryck Subject: Re: Many unexpected warnings with current sparse Date: Wed, 2 Oct 2019 02:19:00 +0200 Message-ID: <20191002001859.qeyo3btl7tosz3vo@desk.local> References: <20191001231017.67txq4dhrvhyzbu5@desk.local> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Steve French Cc: LKML , linux-sparse@vger.kernel.org List-Id: linux-sparse@vger.kernel.org On Tue, Oct 01, 2019 at 06:14:23PM -0500, Steve French wrote: > It may be related to the following sparse make warning: > > No rule to make target > '/usr/include/x86_64-linux-gnu/bits/huge_val.h', needed by > 'sparse-llvm.o' > > I don't see huge_val.h in the Ubuntu 19 version of libc6-dev Yes, I've been bitten myself by this. It's fixed since a little while. So, just doing a clean build or removing all the deps (.*.d) should allow you to build sparse. I've verified the problem with asm and __inline in quota.h: it's autodetected by kconfig (CC_HAS_ASM_INLINE) so the exact config doesn't matter (only gcc's version does) but in all cases recent versions of sparse don't have a problem with it (an upstream version of `sparse --version` should return "v0.6.1-rc1-37-gd466a0281"). Best regards, -- Luc