Date: Tue, 28 Oct 2008 10:46:31 +0300 From: Eygene Ryabinkin <rea-fbsd@codelabs.ru> To: Srinivas <mboxindia@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: Usage of "files" for config Message-ID: <OEHZ1tqoEDjrOeMc2HFlSDyjinQ@ycxwUD7qGgJ%2BeGkrCSeKiWGxBdk> In-Reply-To: <e6a0706a0810271522h4669359at47710cbb8f4ed2c@mail.gmail.com> References: <e6a0706a0810271522h4669359at47710cbb8f4ed2c@mail.gmail.com>
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--Wfe1KbQWcwuymTys Content-Type: text/plain; charset=koi8-r Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Srinivas, good day. Tue, Oct 28, 2008 at 03:52:35AM +0530, Srinivas wrote: > I would like to know the usage of files and files.[arch] in sys/conf. > Basically, I didnt get the advantage of having a common file for > compilation(like files) rather than an individual Makefile in each > subdirectory. 'files' and 'files.$ARCH' are the input directives for the config(8) utility. Makefile is produced with the help of these files. The rationale for having 'files' and 'files.$ARCH' is simple: there are platform-specific directives and common directives. >=20 > I have read makefile(of mkmakefile.c in config). What is the usage of > "standard", "optional" and "mandatory" and why it is followed by > device. Read comments from 'mkmakefile.c': ----- /* * If an entry is marked "mandatory", config will abort if it's * not called by a configuration line in the config file. Apart * from this, the device is handled like one marked "optional". */ ----- > What are .m files? What are they used for? They define module interfaces and are processed by the AWK script /sys/tools/makeobjops.awk. The output will be source and header files, named <m-file-name>.c and <m-file-name>.h. You can do 'ls *_if.[ch]' in the kernel build directory and examine some files to get a hint on what's going on. M-files are processed with the help of /sys/conf/kern.post.mk and /sys/conf/kmod.mk. > Why are some of the rules in the generated makefile *.ln like scsi_all.ln? These files are lint(1)'ed: see /sys/conf/kern.post.mk, search for LNFILES. > What is ${NORMAL_LINT} and ${NORMAL_C} in the generated makefile mean? 'make -V NORMAL_LINT' and 'make -V NORMAL_C' invoked from the kernel compilation directory should tell you about the values of these variables. They are defined by /sys/conf/kern.pre.mk, so you can examine it as well. --=20 Eygene _ ___ _.--. # \`.|\..----...-'` `-._.-'_.-'` # Remember that it is hard / ' ` , __.--' # to read the on-line manual =20 )/' _/ \ `-_, / # while single-stepping the kernel. `-'" `"\_ ,_.-;_.-\_ ', fsc/as # _.-'_./ {_.' ; / # -- FreeBSD Developers handbook=20 {_.-``-' {_/ # --Wfe1KbQWcwuymTys Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (FreeBSD) iEYEARECAAYFAkkGw1cACgkQthUKNsbL7YglYQCeMAs/3VsUCnPmNWsIoZfpwO+9 ztEAoKbb9XRK6ecBNaNSLFT8ucpMQ/3v =X4FZ -----END PGP SIGNATURE----- --Wfe1KbQWcwuymTys--
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