Date: Sun, 7 Aug 2016 19:11:45 -0600 From: Warner Losh <wlosh@bsdimp.com> To: ticso@cicely.de Cc: Adrian Chadd <adrian.chadd@gmail.com>, "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>, Bernd Walter <ticso@cicely7.cicely.de> Subject: Re: out of tree kernel modules (was: compiling modules and FDT define) Message-ID: <53881075-AEC4-4B1A-B000-A340FAAB88CC@bsdimp.com> In-Reply-To: <20160807221319.GD34368@cicely7.cicely.de> References: <20160805005433.GL18406@cicely7.cicely.de> <20160805134358.GN18406@cicely7.cicely.de> <CAJ-VmonNG1XycPWUH%2BrrpcKBUKH8R6u_aD=odmbPB17r8UyM0A@mail.gmail.com> <20160807221319.GD34368@cicely7.cicely.de>
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> On Aug 7, 2016, at 4:13 PM, Bernd Walter <ticso@cicely7.cicely.de> wrote:
>
> On Fri, Aug 05, 2016 at 08:20:11PM -0700, Adrian Chadd wrote:
>> Hi,
>>
>> Try adding opt_platform.h to SRCS in the module makefile?
>>
>> You don't need to add it to the tree. You just have to setup your path
>> to point things /at/ a kernel build tree withall the opt_xxx.h in
>> them.
>>
>> here's what I do:
>>
>> #!/bin/sh
>>
>> X_SRCDIR=${X_SRCDIR:="/home/adrian/work/freebsd/head/src/"}
>> X_KERNDIR=${X_KERNDIR:="/home/adrian/work/freebsd/head/obj/usr/home/adrian/work/freebsd/head/src/sys/GERTRUDE/"}
>> X_KMODOWN=${X_KMODOWN:="adrian"}
>> X_KMODGRP=${X_KMODGRP:="adrian"}
>>
>> # This allows for -HEAD includes for net80211 ..
>> env CFLAGS="-I../../../sys/" \
>> make \
>> MODULES_OVERRIDE="" \
>> DEBUG_FLAGS="-g" \
>> DEBUG_FLAGS="-g" \
>> KMODDIR="/home/adrian/git/github/erikarn/athp/otus/freebsd/modules/" \
>> KMODOWN="${X_KMODOWN}" \
>> KMODGRP="${X_KMODGRP}" \
>> MAKESYSPATH="${X_SRCDIR}/share/mk" \
>> SYSDIR="${X_SRCDIR}/sys/" \
>> KERNBUILDDIR="${X_KERNDIR}" \
>> KERN_DEBUGDIR="" \
>> $@
>>
>> That gets me all the bits I need to be able to run make in module
>> directories and get the correct includes/links setup.
>
> Oh damn - it used to be much easier than that.
> I'm still used to "make all install" for out of tree kernel modules.
> How is it handled for the few kmods in ports?
Mostly by setting KERNBUILDDIR correctly. If we have to jump through all these hoops too,
then I’ll take a look at fixing things…. The above looks more complex than should be
required.
Warner
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