Date: Tue, 17 Apr 2012 10:36:52 +0100
From: Anton Shterenlikht <mexas@bristol.ac.uk>
To: Dimitry Andric <dim@freebsd.org>
Cc: Chris Rees <crees@freebsd.org>, Chris <behrnetworks@gmail.com>, Current FreeBSD <freebsd-current@freebsd.org>, "O. Hartmann" <ohartman@zedat.fu-berlin.de>, Doug Barton <dougb@freebsd.org>
Subject: Re: "/sys/conf/kmod.mk", line 111: Malformed conditional (${MK_CLANG_IS_CC}
Message-ID: <20120417093652.GA29091@mech-cluster241.men.bris.ac.uk>
In-Reply-To: <4F8D3565.2020803@FreeBSD.org>
References: <4F520523.90406@zedat.fu-berlin.de> <CADLo838ZKXXS4mVcjG3cnRp=aQdx5Cpas6DLiSsGQO1acqHnwQ@mail.gmail.com> <4F52286E.4030608@FreeBSD.org> <4F523C1A.4060008@zedat.fu-berlin.de> <CAFYLaXPveMM0RCoHSLpG8i2-i6cStWSPrf4FkzZu63Eg--UE%2Bw@mail.gmail.com> <4F8BBFF3.50205@FreeBSD.org> <CAFYLaXNfYD0E6UbXHO9gBYY0x3eNACQDstubaPZSL_6x4tMzSw@mail.gmail.com> <20120416230857.GA26957@mech-cluster241.men.bris.ac.uk> <4F8D3565.2020803@FreeBSD.org>
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On Tue, Apr 17, 2012 at 11:18:29AM +0200, Dimitry Andric wrote: > On 2012-04-17 01:08, Anton Shterenlikht wrote: > ... > >Just to say that I stumbled upon this issue as well: > > > >http://lists.freebsd.org/pipermail/freebsd-ports/2012-April/074409.html > > > >Subject: net/bwi-firmware-kmod "/sys/conf/kmod.mk", line 111: Malformed > >conditional (${MK_CLANG_IS_CC} == "no"&& ${CC:T:Mclang} != "clang") > > The root cause is still that your kernel sources (in /sys) do not match > your installed world. The kernel module build process uses bsd.own.mk > from /usr/share/mk, which should define MK_CLANG_IS_CC. If it doesn't, > but your kernel source references it, there is a mismatch. > > In some cases, you could fix it by setting MAKESYSPATH to the share/mk > dir under your source tree. There is still no guarantee your module > will build or load correctly. > > As Doug Barton said in reply to r232473: "Building ports where the > sources and the installed kernel differ is not a supported > configuration. The fact that it happens to work most of the time is a > bonus." Yes, my bad, just checked and my /usr/src doesn't match the kernel. Thank you for the explanation. > > That said, i think it may be time to bow to the pressure, and just put a > fixup for this issue in kmod.mk, and the other .mk files, like I > initially did in r232473, but with a BIG FAT WARNING printed, so you at > least know you are attempting to shoot your extremities. :) No, I wouldn't want that. It's just that I thought the ports system never uses anything from /usr/src. Perhaps the ports which do use /sys should print a warning to the user. Something like "before building this port, make sure your installed world version matches the version of your FreeBSD sources." By the way, what would happen if I try to build those ports with no /sys at all? -- Anton Shterenlikht Room 2.6, Queen's Building Mech Eng Dept Bristol University University Walk, Bristol BS8 1TR, UK Tel: +44 (0)117 331 5944 Fax: +44 (0)117 929 4423
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