Commit Graph

28 Commits

Author SHA1 Message Date
Jarek Poplawski
f8a745942b docs: note about select in kconfig-language.txt
A warning note from Sam Ravnborg about kconfig's select evilness,
dependencies and the future (slightly corrected).

Signed-off-by: Jarek Poplawski <jarkao2@o2.pl>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-11 15:47:41 -07:00
Sam Ravnborg
7015030faf kbuild: document cc-fullversion
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-07-16 21:15:48 +02:00
Anton Blanchard
ded2e1640f kbuild: small documentation fix in Documentation/kbuild/modules.txt
The Makefile fragment in Documentation/kbuild/modules.txt looks to be
missing some braces.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2007-05-02 20:58:09 +02:00
Randy Dunlap
5c811e59ad kbuild: more doc. cleanups
Fix typos/spellos in kbuild/makefiles.txt.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2007-02-17 20:03:14 +01:00
Robert P. J. Day
bef1f40261 kconfig: Standardize "depends" -> "depends on" in Kconfig files
Standardize the miniscule percentage of occurrences of "depends" in
Kconfig files to "depends on", and update kconfig-language.txt to
reflect that.

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-12-12 20:04:19 +01:00
Matt LaPlante
5d3f083d8f Fix typos in /Documentation : Misc
This patch fixes typos in various Documentation txts. The patch addresses some
misc words.

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-11-30 05:21:10 +01:00
Daniel Walker
e95be9a532 [PATCH] docs: small kbuild cleanup
While reading this I noticed that the contents of this document list
section "3.8 Command line dependency" but it doesn't exist in the document.

Signed-off-by: Daniel Walker <dwalker@mvista.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04 07:55:12 -07:00
Matt LaPlante
53cb47268e Fix typos in Documentation/: 'S'
This patch fixes typos in various Documentation txts. The patch addresses
some words starting with the letter 'S'.

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Alan Cox <alan@redhat.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-10-03 22:55:17 +02:00
Robert P. J. Day
99c8b9477f kbuild: trivial documentation fixes
Signed-off-by:  "Robert P. J. Day" <rpjday@mindspring.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-10-01 11:52:59 +02:00
Andi Kleen
e2414910f2 [PATCH] x86: Detect CFI support in the assembler at runtime
... instead of using a CONFIG option. The config option still controls
if the resulting executable actually has unwind information.

This is useful to prevent compilation errors when users select
CONFIG_STACK_UNWIND on old binutils and also allows to use
CFI in the future for non kernel debugging applications.

Cc: jbeulich@novell.com
Cc: sam@ravnborg.org

Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:30 +02:00
Robert P. J. Day
2e99f3190f kbuild: fixup Documentation/kbuild/modules.txt
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-09-25 10:41:04 +02:00
Bryce Harrington
39e6e9cf90 kbuild: fix for some typos in Documentation/makefiles.txt
I noticed a few typos while reading makefiles.txt to learn about the
kbuild system.  Attached is a patch against 2.6.18 to fix them.
Remove trailing whitespace while we are there..

Signed-off-by:  Bryce Harrington <bryce@osdl.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-09-25 10:21:52 +02:00
Jan Engelhardt
a07f6033ca kbuild: linguistic fixes for Documentation/kbuild/makefiles.txt
I have done a look-through through Documentation/kbuild/ and my corrections
(proposed) are attached.

Cc'ed are original author Michael (responsible for comitting changes to
these files?), Sam (kbuild maintainer), Adrian (-trivial maintainer).

Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-09-25 09:00:01 +02:00
Jan Engelhardt
d9a7ff6646 kbuild: linguistic fixes for Documentation/kbuild/modules.txt
I have done a look-through through Documentation/kbuild/ and my corrections
(proposed) are attached.

Cc'ed are original author Michael (responsible for comitting changes to
these files?), Sam (kbuild maintainer), Adrian (-trivial maintainer).

Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-09-25 09:00:01 +02:00
Jan Engelhardt
83dcde4e1b kconfig: linguistic fixes for Documentation/kbuild/kconfig-language.txt
I have done a look-through through Documentation/kbuild/ and my corrections
(proposed) are attached.

Cc'ed are original author Michael (responsible for comitting changes to
these files?), Sam (kbuild maintainer), Adrian (-trivial maintainer).

Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-09-25 09:00:01 +02:00
Roland McGrath
0b0bf7a3cc [PATCH] vDSO hash-style fix
The latest toolchains can produce a new ELF section in DSOs and
dynamically-linked executables.  The new section ".gnu.hash" replaces
".hash", and allows for more efficient runtime symbol lookups by the
dynamic linker.  The new ld option --hash-style={sysv|gnu|both} controls
whether to produce the old ".hash", the new ".gnu.hash", or both.  In some
new systems such as Fedora Core 6, gcc by default passes --hash-style=gnu
to the linker, so that a standard invocation of "gcc -shared" results in
producing a DSO with only ".gnu.hash".  The new ".gnu.hash" sections need
to be dealt with the same way as ".hash" sections in all respects; only the
dynamic linker cares about their contents.  To work with older dynamic
linkers (i.e.  preexisting releases of glibc), a binary must have the old
".hash" section.  The --hash-style=both option produces binaries that a new
dynamic linker can use more efficiently, but an old dynamic linker can
still handle.

The new section runs afoul of the custom linker scripts used to build vDSO
images for the kernel.  On ia64, the failure mode for this is a boot-time
panic because the vDSO's PT_IA_64_UNWIND segment winds up ill-formed.

This patch addresses the problem in two ways.

First, it mentions ".gnu.hash" in all the linker scripts alongside ".hash".
 This produces correct vDSO images with --hash-style=sysv (or old tools),
with --hash-style=gnu, or with --hash-style=both.

Second, it passes the --hash-style=sysv option when building the vDSO
images, so that ".gnu.hash" is not actually produced.  This is the most
conservative choice for compatibility with any old userland.  There is some
concern that some ancient glibc builds (though not any known old production
system) might choke on --hash-style=both binaries.  The optimizations
provided by the new style of hash section do not really matter for a DSO
with a tiny number of symbols, as the vDSO has.  If someone wants to use
=gnu or =both for their vDSO builds and worry less about that
compatibility, just change the option and the linker script changes will
make any choice work fine.

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-31 13:28:43 -07:00
Theodore Ts'o
ac031f26e8 kbuild: add option for stripping modules while installing them
Add option for stripping modules while installing them.

This function adds support for stripping modules while they are being
installed.  CONFIG_DEBUG_KERNEL (which will probably become more
popular as developers use kdump) causes the size of the installed
modules to grow by a factor of 9 or so.

Some kernel package systems solve this problem by stripping the debug
information from /lib/modules after running "make modules_install",
but that may not work for people who are installing directly into
/lib/modules --- root partitions that were sized to handle 16 megs
worth of modules may not be quite so happy with 145 megs of modules,
so the "make modules_install" never succeeds.

This patch allows such users to request modules_install to strip the
modules as they are installed.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-06-24 23:16:45 +02:00
Brian Gerst
a7d7cb3cd6 kbuild: fix garbled text in modules.txt
Signed-off-by: Brian Gerst <bgerst@didntduck.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-04-04 15:28:21 +02:00
Sam Ravnborg
172c3ae3e6 kbuild: in makefile.txt note that Makefile is preferred name for kbuild files
As noted by Roland Dreier <rdreier@cisco.com> makefiles.txt told
one to use the name 'Kbuild' as preferred name for kbuild files.
This is not yet true so let makefiles.txt reflect reality.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-03-10 00:23:32 +01:00
Sam Ravnborg
20a468b513 kbuild: make cc-version available in kbuild files
Move $(CC) support functions to Kbuild.include so they are available
in the kbuild files.
In addition the following was done:
	o as-option documented in Documentation/kbuild/makefiles.txt
	o Moved documentation to new section to match
	  new scope of functions
	o added cc-ifversion used to conditionally select a text string
	  dependent on actual $(CC) version
	o documented cc-ifversion
	o change so Kbuild.include is read before the kbuild file

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-02-19 09:51:20 +01:00
Sam Ravnborg
040fcc819a kbuild: improved modversioning support for external modules
With following patch a second option is enabled to obtain
symbol information from a second external module when a
external module is build.
The recommended approach is to use a common kbuild file but
that may be impractical in certain cases.
With this patch one can copy over a Module.symvers from one
external module to make symbols (and symbol versions) available
for another external module.

Updated documentation in Documentation/kbuild/modules.txt

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-02-19 09:51:18 +01:00
Sam Ravnborg
06300b21f4 kbuild: support building individual files for external modules
Support building individual files when dealing with separate modules.
So say you have a module named "foo" which consist of two .o files bar.o
and fun.o.

You can then do:
make -C $KERNELSRC M=`pwd` bar.o
make -C $KERNELSRC M=`pwd` bar.lst
make -C $KERNELSRC M=`pwd` bar.i
make -C $KERNELSRC M=`pwd` /            <= will build all .o files
                                           and link foo.o
make -C $KERNELSRC M=`pwd` foo.ko       <= will build the module
                                           and do the modpost step
					   to create foo.ko

The above will also work if the external module is placed in a
subdirectory using a hirachy of kbuild files.
Thanks to Andreas Gruenbacher <agruen@suse.de> for initial feature
request / bug report.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-02-19 09:51:17 +01:00
Sam Ravnborg
ad14336de8 kbuild: remove GCC_VERSION
This was causing some ordering problems.  Remove the up-front evaluation
and just revaluate the compiler version each time we need it.

(The up-front evaluation was problematic because some architectures modify
the value of $(CC)).

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-01-08 19:58:51 +01:00
Sam Ravnborg
253dfa6e46 kbuild: document howto build external modules using several directories
Update modules.txt with info how to build external modules
with files in several directories.
The question popped up on lkml often enough to warrant this,
let's see if people read this stuff - or google hits it.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2006-01-06 20:33:41 +01:00
Brian Strand
98a1e44411 kbuild: patch to Documentation/kbuild/modules.txt
First off, thanks for the kbuild docs, they are very useful!  Second,
I've attached a patch to modules.txt (from 2.6.14.2) with a "compile"
fix to a Makefile example, and some trivial spelling/grammar nits.
Please let me know if you want the patch in some other format (eg not
MIME), or if I should go bother someone else about it.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2005-12-16 23:15:41 +01:00
Sam Ravnborg
5bb7826900 kbuild: rename prepare to archprepare to fix dependency chain
When introducing the generic asm-offsets.h support the dependency
chain for the prepare targets was changed. All build scripts expecting
include/asm/asm-offsets.h to be made when using the prepare target would broke.
With the limited number of prepare targets left in arch Makefiles
the trivial solution was to introduce a new arch specific target: archprepare

The dependency chain looks like this now:

prepare
  |
  +--> prepare0
         |
         +--> archprepare
                |
		+--> scripts_basic
                +--> prepare1
                       |
                       +---> prepare2
                               |
                               +--> prepare3

So prepare 3 is processed before prepare2 etc.
This guaantees that the asm symlink, version.h, scripts_basic
are all updated before archprepare is processed.

prepare0 which build the asm-offsets.h file will need the
actions performed by archprepare.

The head target is now named prepare, because users scripts will most
likely use that target, but prepare-all has been kept for compatibility.
Updated Documentation/kbuild/makefiles.txt.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2005-09-11 22:30:22 +02:00
Paolo 'Blaisorblade' Giarrusso
49490571bc [PATCH] kbuild: describe Kbuild pitfall
Whitespace is significant for make, and I just fought against this... so
please apply this patch.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2005-07-28 22:58:21 +02:00
Linus Torvalds
1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00