8e62839eb1
Plumb the %VERSREQ from Makefile.<arch> through to the rest of config(8). We've recorded the config(8) version that we're calling "the end of envmode and hintmode," and we'll write them out for earlier versions. Later kernel version bumps will remove envmode/hintmode from the kernel as needed, which is OK since the current kernel does not use them at all. These compatibility shims really need to go away when the major version rolls over... Discussed with: imp
57 lines
2.3 KiB
C
57 lines
2.3 KiB
C
/*-
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* This file is in the public domain
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*
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* $FreeBSD$
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*/
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/*
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* 6 digits of version. The most significant are branch indicators at the
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* time when the last incompatible change was made (which is why it is
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* presently 6 on 7-current). The least significant digits are incremented
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* as described below. The format is similar to the __FreeBSD_version, but
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* not tied to it.
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*
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* DO NOT CASUALLY BUMP THIS NUMBER! The rules are not the same as shared
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* libs or param.h/osreldate.
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*
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* It is the version number of the protocol between config(8) and the
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* sys/conf/ Makefiles (the kernel build system).
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*
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* It is now also used to trap certain problems that the syntax parser cannot
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* detect.
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*
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* Unfortunately, there is no version number for user supplied config files.
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*
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* Once, config(8) used to silently report errors and continue anyway. This
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* was a huge problem for 'make buildkernel' which was run with the installed
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* /usr/sbin/config, not a cross built one. We started bumping the version
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* number as a way to trap cases where the previous installworld was not
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* compatible with the new buildkernel. The buildtools phase and much more
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* comprehensive error code returns solved this original problem.
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*
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* Most end-users will use buildkernel and the build tools from buildworld.
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* The people that are inconvenienced by gratuitous bumps are developers
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* who run config by hand. However, developers shouldn't gratuitously be
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* inconvenienced.
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*
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* One should bump the CONFIGVERS in the following ways:
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*
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* (1) If you change config such that it won't read old config files,
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* then bump the major number. You shouldn't be doing this unless
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* you are overhauling config. Do not casually bump this number
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* and by implication do not make changes that would force a bump
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* of this number casually. You should limit major bumps to once
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* per branch.
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* (2) For each new feature added, bump the minor version of this file.
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* When a new feature is actually used by the build system, update the
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* %VERSREQ field in the Makefile.$ARCH of all the affected makefiles
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* (typically all of them).
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*
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* $FreeBSD$
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*/
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#define CONFIGVERS 600016
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#define MAJOR_VERS(x) ((x) / 100000)
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/* Last config(8) version to require envmode/hintmode */
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#define CONFIGVERS_ENVMODE_REQ 600015
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