Date: Tue, 30 Nov 2004 19:16:02 +0200 From: Giorgos Keramidas <keramida@ceid.upatras.gr> To: Jonathon McKitrick <jcm@FreeBSD-uk.eu.org> Cc: freebsd-questions@freebsd.org Subject: Re: Source tree hierarchy Message-ID: <20041130171602.GF2610@gothmog.gr> In-Reply-To: <20041130170149.GD29674@dogma.freebsd-uk.eu.org> References: <20041130153247.GB29674@dogma.freebsd-uk.eu.org> <20041130165434.GD2610@gothmog.gr> <20041130170149.GD29674@dogma.freebsd-uk.eu.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On 2004-11-30 17:01, Jonathon McKitrick <jcm@FreeBSD-uk.eu.org> wrote: > On Tue, Nov 30, 2004 at 06:54:35PM +0200, Giorgos Keramidas wrote: > : On 2004-11-30 15:32, Jonathon McKitrick <jcm@FreeBSD-uk.eu.org> wrote: > : > Why are there sometimes 2 levels of the same directory name, one beneath the > : > other? > : > > : > Like sys and i386, for example? > : > : They are different things: > : > : /usr/src/sys Kernel sources (entire source tree). > : > : /usr/src/sys/sys Kernel header files. These are installed as > : /usr/include/sys/* by the installation process. > > Ok, that makes sense. But src/sys/i386/i386 has source code, not just > headers. Is this code that is specific to i386 CPUs, while src/sys/i386 is > just specific to the system architecture? The /usr/src/sys/i386 directory is AFAIK an `architecture' directory, like src/sys/sparc64 or src/sys/amd64. The machine-dependent parts of the i386 architecure are all under this tree. Header files (include), configuration options (conf), BIOS support (bios), or anything else related to the i386 architecture is stored here. The src/sys/i386/i386 directory is a `machine' related subdirectory. The difference of architecture vs. machine becomes more apparent in src/sys/amd64 where you find subdirectories like ia32 and amd64 :-)
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20041130171602.GF2610>