Date: Mon, 10 Sep 2012 19:30:37 -0500 (CDT) From: Robert Bonomi <bonomi@mail.r-bonomi.com> To: freebsd-questions@freebsd.org Subject: Where are the mechancs of config(8) descibed Message-ID: <201209110030.q8B0Ub0G083363@mail.r-bonomi.com>
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(This is probably a bit techical for 'questions' -- I'd welcome a suggesstion of a more appopriae forum.) Is there a detailed description anywhere of the mechanics of *how* config(8) does what it doess? I'm looking fo the gory detail of how, sayi, 'device bpf' causes the creation of the file 'opt_bpf.h' containing '#define DEV_BPF 1" _Part_ of the magic is the sys/conf/files* and sys/conf/options* files, but their format/content isn't defined anywhee I've found. rerason for asking -- I want to addd a cutom device driver into the kernel. I have sources, and can build the .o, if i convert it to a .ko, it loads and run. *BUT* I want to embed it in the kernel at build time. "Somewhere", I have do define 'device foo', specify that that name adds 'myfoo_sys.o' to the kernel object-files list, and that myfoo_sys.o depends on a list of source files, and requires a particular sequence of commands to build from those shources. I know the 'what', just not the 'where' or 'how'. Any pointers appreciated.
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