Commit Graph

147 Commits

Author SHA1 Message Date
Geert Uytterhoeven
b22ae40ef2 Documentation: kbuild: Remove obsolete include/asm symlink step
As of commit f7f16b7799 ("kbuild: drop
include/asm"), the include/asm symlink is no longer created.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-08-19 10:02:40 +02:00
Linus Torvalds
899552d6e8 Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull misc kbuild updates from Michal Marek:
 "This is the non-critical part of kbuild for 3.17-rc1:

   - make help hint to use make -s with make kernelrelease et al.
   - moved a kbuild document to Documentation/kbuild where it belongs
   - four new Coccinelle scripts, one dropped and one fixed
   - new make kselftest target to run various tests on the kernel"

* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  kbuild: kselftest - new make target to build and run kernel selftests
  Coccinelle: Script to replace if and BUG with BUG_ON
  Coccinelle: Script to detect incorrect argument to sizeof
  Coccinelle: Script to use ARRAY_SIZE instead of division of two sizeofs
  Coccinelle: Script to detect cast after memory allocation
  coccinelle/null: solve parse error
  Documentation: headers_install.txt is part of kbuild
  kbuild: make -s should be used with kernelrelease/kernelversion/image_name
2014-08-14 11:14:29 -06:00
Linus Torvalds
3b7b3e6ec5 Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild updates from Michal Marek:
 - make clean also considers $(extra-m) and $(extra-) to be consistent
 - cleanup and fixes in scripts/Makefile.host
 - allow to override the name of the Python 2 executable with make
   PYTHON=... (only needed for ia64 in practice)
 - option to split debugingo into *.dwo files to save disk space if the
   compiler supports it (CONFIG_DEBUG_INFO_SPLIT)
 - option to use dwarf4 debuginfo if the compiler supports it
   (CONFIG_DEBUG_INFO_DWARF4)
 - fix for disabling certain warnings with clang
 - fix for unneeded rebuild with dash when a command contains
   backslashes

* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  kbuild: Fix handling of backslashes in *.cmd files
  kbuild, LLVMLinux: Supress warnings unless W=1-3
  Kbuild: Add a option to enable dwarf4 v2
  kbuild: Support split debug info v4
  kbuild: allow to override Python command name
  kbuild: clean-up and bug fix of scripts/Makefile.host
  kbuild: clean up scripts/Makefile.host
  kbuild: drop shared library support from Makefile.host
  kbuild: fix a bug of C++ host program handling
  kbuild: fix a typo in scripts/Makefile.host
  scripts/Makefile.clean: clean also $(extra-m) and $(extra-)
2014-08-14 11:12:46 -06:00
Yann Droneaud
aa8dbeee5e Documentation: headers_install.txt is part of kbuild
'headers_install.txt' from Documentation/make/ is related to Kbuild
so it must be moved in Documentation/kbuild/ directory.

As Documentation/make/ directory has only one file, it will be removed
as a consequence of moving 'headers_install.txt'.

Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Rob Landley <rob@landley.net>
Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-08-05 16:08:11 +02:00
Masahiro Yamada
62e2210798 kbuild: drop shared library support from Makefile.host
The shared library feature in Makefile.host is no longer used.
Rip it off to keep the build infrastucture simple.

Update Documentation/kbuild/makefiles.txt too.
The section "4.3 Definition shared libraries" should be removed
and the following sections should be re-numbered.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Suggested-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-07-16 17:15:26 +02:00
Masahiro Yamada
c14105628b kbuild: fix a typo in a kbuild document
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-18 21:38:18 +02:00
Warren Turkal
4be7f0a30b kbuild: Fix a typo in documentation
Signed-off-by: Warren Turkal <wt@penguintechs.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2014-06-10 14:14:29 +02:00
Josh Triplett
5d2acfc7b9 kconfig: make allnoconfig disable options behind EMBEDDED and EXPERT
"make allnoconfig" exists to ease testing of minimal configurations.
Documentation/SubmitChecklist includes a note to test with allnoconfig.
This helps catch missing dependencies on common-but-not-required
functionality, which might otherwise go unnoticed.

However, allnoconfig still leaves many symbols enabled, because they're
hidden behind CONFIG_EMBEDDED or CONFIG_EXPERT.  For instance, allnoconfig
still has CONFIG_PRINTK and CONFIG_BLOCK enabled, so drivers don't
typically get build-tested with those disabled.

To address this, introduce a new Kconfig option "allnoconfig_y", used on
symbols which only exist to hide other symbols.  Set it on CONFIG_EMBEDDED
(which then selects CONFIG_EXPERT).  allnoconfig will then disable all the
symbols hidden behind those.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-07 16:36:09 -07:00
Regid Ichira
560909d433 Documentation/kbuild/kconfig.txt: 'make listnewconfig' replaces: yes "" | make oldconfig
Signed-off-by: Regid Ichira <regid23@nt1.in>
Acked-by: Rob Landley <rob@landley.net>
[yann.morin.1998@free.fr: fix trailing whitespace, commit subject]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2013-10-08 23:51:50 +02:00
Yann E. MORIN
e062781397 kconfig: do not allow more than one symbol to have 'option modules'
Previously, it was possible to have more than one symbol with the
'option modules' attached to them, although only the last one would
in fact control tristates.

Since this does not make much sense, only allow at most one symbol to
control tristates.

Note: it is still possible to have more than one symbol that control
tristates, but indirectly:

    config MOD1
        bool "mod1"
        select MODULES
    config MOD2
        bool "mod2"
        select MODULES
    config MODULES
        bool
        option modules

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2013-09-05 11:10:08 +02:00
Michal Marek
c3286ee337 Merge branch 'yem-kconfig-rc-fixes' of git://gitorious.org/linux-kconfig/linux-kconfig into kbuild/kconfig 2013-07-23 15:57:17 +02:00
Yann E. MORIN
9e554dd7b2 Documentation/kconfig: more concise and straightforward search explanation
Re-phrase the explanations on the sorting of search results, in a more
concise and complete way.

Drop reference to the user's locale when sorting alphabetically, since
this is implicit.

Reported-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
2013-07-16 20:26:30 +02:00
Linus Torvalds
b202c0d520 Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kconfig updates from Michal Marek:
 - dependency solver fix for make defconfig
 - randconfig fixes, one of which had to be reverted again
 - more user-friendly sorting of search results
 - hex and range keywords support longs
 - fix for [mn]conf not to rely on particular behavior of the LINES and
   COLS variables
 - cleanup of magic constants in kconfig/lxdialog
 - [mn]conf formatting fixes
 - fix for scripts/config's help text in out-of-tree usage (under a
   different name)

* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  kconfig: allow "hex" and "range" to support longs
  Revert "kconfig: fix randomising choice entries in presence of KCONFIG_ALLCONFIG"
  kconfig: fix randomising choice entries in presence of KCONFIG_ALLCONFIG
  kconfig: loop as long as we changed some symbols in randconfig
  kconfig/[mn]conf: make it explicit in the search box that a regexp is possible
  kconfig: sort found symbols by relevance
  kconfig/conf: print the seed used to initialise the RNG for randconfig
  kconfig/conf: accept a base-16 seed for randconfig
  kconfig/conf: fix randconfig setting multiple symbols in a choice
  scripts/config: replace hard-coded script name by a dynamic value
  mconf/nconf: mark empty menus/menuconfigs different from non-empty ones
  nconf: use function calls instead of ncurses' variables LINES and COLS
  mconf: use function calls instead of ncurses' variables LINES and COLS
  kconfig/lxdialog: handle newline characters in print_autowrap()
  kconfig/lxdialog: Use new mininimum resize definitions in conf_choice()
  kconfig/lxdialog: Add definitions for mininimum (re)size values
  kconfig: Fix defconfig when one choice menu selects options that another choice menu depends on
2013-07-10 16:06:46 -07:00
Yann E. MORIN
193b40aeb5 kconfig: sort found symbols by relevance
When searching for symbols, return the symbols sorted by relevance.

Sorting is done as thus:
  - first, symbols that match exactly
  - then, alphabetical sort

Since the search can be a regexp, it is possible that more than one symbol
matches exactly. In this case, we can't decide which to sort first, so we
fallback to alphabeticall sort.

Explain this (new!) sorting heuristic in the documentation.

Reported-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Jean Delvare <jdelvare@suse.de>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Roland Eggner <edvx1@systemanalysen.net>
Cc: Wang YanQing <udknight@gmail.com>

--
Changes v1->v2:
  - drop the previous, complex heuristic in favour of a simpler heuristic
    that is both easier to understand, *and* to maintain (Jean)
  - explain sorting heuristic in the doc  (Jean)
2013-06-24 19:57:45 +02:00
Stephen Rothwell
40b313608a Finally eradicate CONFIG_HOTPLUG
Ever since commit 45f035ab9b ("CONFIG_HOTPLUG should be always on"),
it has been basically impossible to build a kernel with CONFIG_HOTPLUG
turned off.  Remove all the remaining references to it.

Cc: Russell King <linux@arm.linux.org.uk>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-03 14:20:18 -07:00
Linus Torvalds
b9e306e07e Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull misc kbuild updates from Michal Marek:
 "Non-critical kbuild changes:

   - make coccicheck improvements, but no new semantic patches this time

   - make rpm improvements

   - make tar-pkg change to include the architecture in the filename.

     This is a deliberate incompatibility, but nobody has complained so
     far and it is useful if you build for different architectures.  It
     also matches what the deb-pkg and rpm-pkg targets produce.

   - kbuild documentation fix"

* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  rpm-pkg: Remove pointless set -e statements
  rpm-pkg: Always regenerate the specfile
  rpm-pkg: Do not write to the parent directory
  rpm-pkg: Do not package the whole source directory
  buildtar: Add ARCH to the archive name
  Coccinelle: Fix patch output when coccicheck is used with M= and C=
  Coccinelle: Add support to the SPFLAGS variable
  Coccinelle: Cleanup the setting of the FLAGS and OPTIONS variables
  Coccinelle: Restore coccicheck verbosity in ONLINE mode (C=1 or C=2)
  scripts/package/Makefile: compare objtree with srctree instead of test KBUILD_OUTPUT
  doc: change example to existing Makefile fragment
  scripts/tags.sh: Add magic for OFFSET and DEFINE
2013-05-07 07:59:19 -07:00
Linus Torvalds
685e56d294 Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kconfig updates from Michal Marek:
 - use pkg-config to detect curses libraries
 - clean up the way curses headers are searched
 - Some randconfig fixes, of which one had to be reverted
 - KCONFIG_SEED for randconfig debugging
 - memuconfig memory leak plugged
 - menuconfig > breadcrumbs > navigation
 - xconfig compilation fix
 - Other minor fixes

* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  kconfig: fix lists definition for C++
  Revert "kconfig: fix randomising choice entries in presence of KCONFIG_ALLCONFIG"
  kconfig: implement KCONFIG_PROBABILITY for randconfig
  kconfig: allow specifying the seed for randconfig
  kconfig: fix randomising choice entries in presence of KCONFIG_ALLCONFIG
  kconfig: do not override symbols already set
  kconfig: fix randconfig tristate detection
  kconfig/lxdialog: rationalise the include paths where to find {.n}curses{,w}.h
  menuconfig: Add "breadcrumbs" navigation aid
  menuconfig: Fix memory leak introduced by jump keys feature
  merge_config.sh: Avoid creating unnessary source softlinks
  kconfig: optionally use pkg-config to detect ncurses libs
  menuconfig: optionally use pkg-config to detect ncurses libs
2013-05-07 07:58:05 -07:00
Yann E. MORIN
e43956e607 kconfig: implement KCONFIG_PROBABILITY for randconfig
Currently the odds to set each symbol is (rounded):
    booleans:   y: 50%          n: 50%
    tristates:  y: 33%  m: 33%  n: 33%

Introduce a KCONFIG_PROBABILITY environment variable to tweak the
probabilities (in percentage), as such:
    KCONFIG_PROBABILITY     y:n split           yⓂ️n split
    -----------------------------------------------------------------
[1] unset or empty          50  : 50            33  : 33  : 34
[2] N                        N  : 100-N         N/2 : N/2 : 100-N
    N:M                     N+M : 100-(N+M)      N  :  M  : 100-(N+M)
    N:M:L                    N  : 100-N          M  :  L  : 100-(M+L)

[1] The current behaviour is kept as default, for backward compatibility
[2] The solution initially implemented by Peter for Buildroot, see:
    http://git.buildroot.org/buildroot/commit/?id=3435c1afb5

Signed-off-by: Peter Korsgaard <jacmet@uclibc.org>
[yann.morin.1998@free.fr: add to Documentation/]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2013-04-25 00:16:30 +02:00
Yann E. MORIN
0d8024c6eb kconfig: allow specifying the seed for randconfig
For reproducibility, it can be useful to be able to specify the
seed to use to seed the RNG.

Add a new KCONFIG_SEED environment variable which can be set to
the seed to use:
    $ make KCONFIG_SEED=42 randconfig
    $ sha1sum .config
    70a128c8dcc61303069e1be352cce64114dfcbca  .config
    $ make KCONFIG_SEED=42 randconfig
    $ sha1sum .config
    70a128c8dcc61303069e1be352cce64114dfcbca  .config

It's very usefull for eg. debugging the kconfig parser.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2013-04-25 00:16:25 +02:00
Paul Bolle
ff4eb04c88 doc: change example to existing Makefile fragment
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Acked-by: Rob Landley <rob@landley.net>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2013-04-08 13:00:29 +02:00
Antony Pavlov
5b83df2b46 kbuild: fix ld-option function
The kbuild's ld-option function is broken because
the command
  $(CC) /dev/null -c -o "$$TMPO"
does not create object file!

I have used a relatively old mips gcc 3.4.6 cross-compiler
and a relatively new gcc 4.7.2 to check this fact
but the results are the same.

EXAMPLE:
  $ rm /tmp/1.o
  $ mips-linux-gcc /dev/null -c -o /tmp/1.o
  mips-linux-gcc: /dev/null: linker input file unused because linking not done
  $ ls -la /tmp/1.o
  ls: cannot access /tmp/1.o: No such file or directory

We can easily fix the problem by adding
the '-x c' compiler option.

EXAMPLE:
  $ rm /tmp/1.o
  $ mips-linux-gcc -x c /dev/null -c -o /tmp/1.o
  $ ls -la /tmp/1.o
  -rw-r--r-- 1 antony antony 778 Apr  2 20:40 /tmp/1.o

Also fix wrong ld-option example.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2013-04-08 11:47:41 +02:00
Linus Torvalds
309667e53f Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kconfig changes from Michal Marek:
 "I forgot to send a pull request in time for the v3.8-rc1 merge window,
  so the list is a bit longer this time:

   - menuconfig enables extended colors in ncurses if the wide-character
     version is used.

   - CONFIG_ prefix can be specified in the environment to make life
     easier for people using kconfig multiple times in a single tree (no
     functional change in the kernel kconfig usage).

   - kconfig aborts on OOM.

   - inputboxes in menuconfig allow to move the cursor.

   - menuconfig has Save/Load buttons now.

   - xconfig build fix with new g++ and Qt3.

   - nconfig color scheme fix and help text update.

   - make oldconfig prints newlines when output is redirected.

   - some other minor fixes."

* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  kbuild: Fix missing '\n' for NEW symbols in yes "" | make oldconfig >conf.new
  kconfig: nconf: rewrite labels of function keys line
  kconfig: nconf: rewrite help texts
  kconfig: fix a compiliation error when using make xconfig
  nconf: function keys line, change background color for better readability
  menuconfig: Get rid of the top-level entries for "Load an Alternate/Save an Alternate"
  menuconfig: Add Save/Load buttons
  kconfig:lxdialog: remove duplicate code
  menuconfig:inputbox: support navigate input position
  kconfig: document use of CONFIG_ environment variable
  scripts/kconfig: ensure we use proper CONFIG_ prefix
  merge_config.sh: Add option to specify output dir
  Revert "kconfig-language: add to hints"
  kconfig: Regenerate lexer
  kconfig: Fix malloc handling in conf tools
  kconfig: get CONFIG_ prefix from the environment
  kconfig: add a function to get the CONFIG_ prefix
  kconfig: remove CONFIG_ from string constants
  menuconfig: fix extended colors ncurses support
2013-02-27 12:28:30 -08:00
Michal Marek
e3900e74f2 Merge branch 'kbuild/rc-fixes' into kbuild/kconfig
There is one kconfig fix in the rc-fixes branch that I forgot to submit
for 3.8, so let's add it to the kconfig branch for 3.9-rc1.
2013-02-25 21:51:57 +01:00
Stephen Warren
22435f3833 kbuild: create a rule to run the pre-processor on *.dts files
Create cmd_dtc_cpp to run the C pre-processor on *.dts file before
passing them to dtc for final compilation. This allows the use of #define
and #include within the .dts file.

Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Michal Marek <mmarek@suse.cz>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-08 14:38:07 +00:00
Yann E. MORIN
169743264f kconfig: document use of CONFIG_ environment variable
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
2012-12-25 23:40:07 +01:00
Linus Torvalds
a2013a13e6 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial branch from Jiri Kosina:
 "Usual stuff -- comment/printk typo fixes, documentation updates, dead
  code elimination."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits)
  HOWTO: fix double words typo
  x86 mtrr: fix comment typo in mtrr_bp_init
  propagate name change to comments in kernel source
  doc: Update the name of profiling based on sysfs
  treewide: Fix typos in various drivers
  treewide: Fix typos in various Kconfig
  wireless: mwifiex: Fix typo in wireless/mwifiex driver
  messages: i2o: Fix typo in messages/i2o
  scripts/kernel-doc: check that non-void fcts describe their return value
  Kernel-doc: Convention: Use a "Return" section to describe return values
  radeon: Fix typo and copy/paste error in comments
  doc: Remove unnecessary declarations from Documentation/accounting/getdelays.c
  various: Fix spelling of "asynchronous" in comments.
  Fix misspellings of "whether" in comments.
  eisa: Fix spelling of "asynchronous".
  various: Fix spelling of "registered" in comments.
  doc: fix quite a few typos within Documentation
  target: iscsi: fix comment typos in target/iscsi drivers
  treewide: fix typo of "suport" in various comments and Kconfig
  treewide: fix typo of "suppport" in various comments
  ...
2012-12-13 12:00:02 -08:00
Yann E. MORIN
169dfd880a Revert "kconfig-language: add to hints"
This reverts commit 64b81ed7fb.

As Martin says about this paragraph:
    However, I can not reproduce this. The attached file contains both
    cases. [...] AFAICS, both versions behave equivalently. I suggest
    changing the documentation accordingly.

    [in http://marc.info/?l=linux-kbuild&m=134987006202410&w=2]

Reported-by: Martin Walch <walch.martin@gmx.de>
Cc: Martin Walch <walch.martin@gmx.de>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2012-12-06 11:34:55 +01:00
Stephen Warren
90b335fbbc kbuild: centralize .dts->.dtb rule
All architectures that use cmd_dtc do so in almost the same way. Create
a central build rule to avoid duplication. The one difference is that
most current uses of dtc build $(obj)/%.dtb from $(src)/dts/%.dts rather
than building the .dtb in the same directory as the .dts file. This
difference will be eliminated arch-by-arch in future patches.

MIPS is the exception here; it already uses the exact same rule as the
new common rule, so the duplicate is removed in this patch to avoid any
conflict. arch/mips changes courtesy of Ralf Baechle.

Update Documentation/kbuild to remove the explicit call to cmd_dtc from
the example, now that the rule exists in a centralized location.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Olof Johansson <olof@lixom.net>
Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: linux@lists.openrisc.net
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: linux-c6x-dev@linux-c6x.org
Cc: Mark Salter <msalter@redhat.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: microblaze-uclinux@itee.uq.edu.au
Cc: Chris Zankel <chris@zankel.net>
Cc: linux-xtensa@linux-xtensa.org
Cc: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2012-11-30 10:52:19 -06:00
Masanari Iida
4e79162a52 doc: fix quite a few typos within Documentation
Correct spelling typo in Documentations

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-11-19 14:28:24 +01:00
David Howells
40f1d4c200 UAPI: Remove the objhdr-y export list
Remove the objhdr-y export list as it is no longer used.  genhdr-y should be
used instead.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
2012-10-02 18:01:56 +01:00
Linus Torvalds
da85d3426f Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kconfig changes from Michal Marek:

 - Error handling for make KCONFIG_ALLCONFIG=<...> all*config plus a fix
   for a bug that was exposed by this

 - Fix for the script/config utility.

* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  scripts/config: properly report and set string options
  kbuild: all{no,yes,mod,def,rand}config only read files when instructed to.
  kconfig: Add error handling to KCONFIG_ALLCONFIG
2012-05-28 10:37:56 -07:00
Sam Ravnborg
d27579a273 kbuild: document KBUILD_LDS, KBUILD_VMLINUX_{INIT,MAIN} and LDFLAGS_vmlinux
Newly exported variables - used by link-vmlinux.sh

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2012-05-05 21:19:33 +02:00
Eric W. Biederman
5efe241eac kconfig: Add error handling to KCONFIG_ALLCONFIG
- Only try to read the file specified if KCONFIG_ALL_CONFIG is set to
  something other than the empty string or "1".

- Don't use stat to check the name passed to conf_read_simple so that
  zconf_fopen can find the file in the current directory or in SRCTREE
  removing a extremely source of confusing failure, where KCONFIG_ALL_CONFIG
  was not interpreted with respect to the directory make was called in.

- If conf_read_simple fails complain clearly and stop processing.
  Allowing the simple debugging of typos.

- Clearly document the behavior so it is clear to users which
  values are treated as flags and which values are treated as
  filenames.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2012-05-05 00:24:07 +02:00
Javi Merino
673d29f9a0 Documentation: mention scripts/diffconfig tool
The kconfig documentation suggests using plain 'diff' to compare config
files and then adds "Yes, we need something better here".  Commit
a717417e7f ("kconfig: add diffconfig utility") added what that comment
was looking for.

Signed-off-by: Javi Merino <javi.merino@arm.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-30 16:03:15 -07:00
Masanari Iida
40e47125e6 Documentation: Fix multiple typo in Documentation
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-03-07 16:08:24 +01:00
H. Peter Anvin
052ad27496 kbuild: Add support for an "archheaders" target
Add support for an "archheaders" target.  This target can generate
files that need to be installed for user space by "make
headers_install" or "make headers_install_all".

In order to support "make headers_install_all", it must be able to run
without the tree having to be configured first.

Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-11-17 13:35:20 -08:00
Wanlong Gao
25eb650a69 doc: fix wrong arch/i386 references
Change all "arch/i386" to "arch/x86" in Documentaion/,
since the directory has changed.

Also update the files which have changed their filename
in the meantime accordingly.

Signed-off-by: Wanlong Gao <wanlong.gao@gmail.com>
[jkosina@suse.cz: reword changelog]
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-06-13 13:43:05 +02:00
Linus Torvalds
f3ae1c7520 Merge branch 'kconfig-for-40' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6
* 'kconfig-for-40' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
  xconfig: merge code path to conf_write()
  kconfig: do not record timestamp in .config
  gconfig: Hide unused left treeview when start up the interface
  gconfig: enable rules hint for main treeviews
  MAINTAINERS: Update KCONFIG entry
  kconfig-language: add to hints
  kconfig: Document the new "visible if" syntax
  kconfig: quiet commands when V=0
  kconfig: change update-po-config to reflect new layout of arch/um
  kconfig: make update-po-config work in KBUILD_OUTPUT
  kconfig: rearrange clean-files
  kconfig: change gconf to modify hostprogs-y like nconf and mconf
  kconfig: change qconf to modify hostprogs-y like nconf and mconf
  kconfig: only build kxgettext when needed
  nconfig: Silence unused return values from wattrset
  kconfig: Do not record timestamp in auto.conf and autoconf.h
  kconfig: get rid of unused flags
  kconfig: allow multiple inclusion of the same file
  kconfig: Avoid buffer underrun in choice input
2011-05-25 16:54:01 -07:00
Linus Torvalds
2bb732cdb4 Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6
* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
  kbuild: make KBUILD_NOCMDDEP=1 handle empty built-in.o
  scripts/kallsyms.c: fix potential segfault
  scripts/gen_initramfs_list.sh: Convert to a /bin/sh script
  kbuild: Fix GNU make v3.80 compatibility
  kbuild: Fix passing -Wno-* options to gcc 4.4+
  kbuild: move scripts/basic/docproc.c to scripts/docproc.c
  kbuild: Fix Makefile.asm-generic for um
  kbuild: Allow to combine multiple W= levels
  kbuild: Disable -Wunused-but-set-variable for gcc 4.6.0
  Fix handling of backlash character in LINUX_COMPILE_BY name
  kbuild: asm-generic support
  kbuild: implement several W= levels
  kbuild: Fix build with binutils <= 2.19
  initramfs: Use KBUILD_BUILD_TIMESTAMP for generated entries
  kbuild: Allow to override LINUX_COMPILE_BY and LINUX_COMPILE_HOST macros
  kbuild: Drop unused LINUX_COMPILE_TIME and LINUX_COMPILE_DOMAIN macros
  kbuild: Use the deterministic mode of ar
  kbuild: Call gzip with -n
  kbuild: move KALLSYMS_EXTRA_PASS from Kconfig to Makefile
  Kconfig: improve KALLSYMS_ALL documentation

Fix up trivial conflict in Makefile
2011-05-24 13:31:37 -07:00
Arnaud Lacombe
bdebd4892e kconfig: do not record timestamp in .config
Signed-off-by: Arnaud Lacombe <lacombar@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-05-24 16:13:40 +02:00
Michal Marek
8417da6f21 kbuild: Fix passing -Wno-* options to gcc 4.4+
Starting with 4.4, gcc will happily accept -Wno-<anything> in the
cc-option test and complain later when compiling a file that has some
other warning. This rather unexpected behavior is intentional as per
http://gcc.gnu.org/PR28322, so work around it by testing for support of
the opposite option (without the no-). Introduce a new Makefile function
cc-disable-warning that does this and update two uses of cc-option in
the toplevel Makefile.

Reported-and-tested-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-05-03 10:50:54 +02:00
Randy Dunlap
64b81ed7fb kconfig-language: add to hints
Explain a little about kconfig symbol dependencies and symbol
existence given optional kconfig language scenarios.
Yes, I was bitten by this.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-05-02 17:39:24 +02:00
Michal Marek
df835c2e7f kconfig: Document the new "visible if" syntax
Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-05-02 17:31:52 +02:00
Sam Ravnborg
d8ecc5cd8e kbuild: asm-generic support
There is an increasing amount of header files
shared between individual architectures in asm-generic.
To avoid a lot of dummy wrapper files that just
include the corresponding file in asm-generic provide
some basic support in kbuild for this.

With the following patch an architecture can maintain
a list of files in the file arch/$(ARCH)/include/asm/Kbuild

To use a generic file just add:

        generic-y += <name-of-header-file.h>

For each file listed kbuild will generate the necessary
wrapper in arch/$(ARCH)/include/generated/asm.

When installing userspace headers a wrapper is likewise created.

The original inspiration for this came from the unicore32
patchset - although a different method is used.

The patch includes several improvements from Arnd Bergmann.
Michael Marek contributed Makefile.asm-generic.

Remis Baima did an intial implementation along to achive
the same - see https://patchwork.kernel.org/patch/13352/

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Guan Xuetao <guanxuetao@mprc.pku.edu.cn>
Tested-by: Guan Xuetao <guanxuetao@mprc.pku.edu.cn>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-04-28 18:01:41 +02:00
Michal Marek
40df759e2b kbuild: Fix build with binutils <= 2.19
The D option of ar is only available in newer versions.

Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-04-20 15:39:22 +02:00
Michal Marek
a8b8017c34 initramfs: Use KBUILD_BUILD_TIMESTAMP for generated entries
gen_init_cpio gets the current time and uses it for each symlink,
special file, and directory.  Grab the current time once and make it
possible to override it with the KBUILD_BUILD_TIMESTAMP variable for
reproducible builds.

Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-04-18 14:27:52 +02:00
Michal Marek
53e6892c04 kbuild: Allow to override LINUX_COMPILE_BY and LINUX_COMPILE_HOST macros
Make it possible to override the user@host string displayed during boot
and in /proc/version by the environment variables KBUILD_BUILD_USER and
KBUILD_BUILD_HOST. Several distributions patch scripts/mkcompile_h to
achieve this, so let's provide an official way. Also, document the
KBUILD_BUILD_TIMESTAMP variable while at it.

Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-04-18 14:26:55 +02:00
Lucas De Marchi
25985edced Fix common misspellings
Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-31 11:26:23 -03:00
Linus Torvalds
eddecbb601 Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6
* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
  kbuild: Make DEBUG_SECTION_MISMATCH selectable, but not on by default
  genksyms: Regenerate lexer and parser
  genksyms: Track changes to enum constants
  genksyms: simplify usage of find_symbol()
  genksyms: Add helpers for building string lists
  genksyms: Simplify printing of symbol types
  genksyms: Simplify lexer
  genksyms: Do not paste the bison header file to lex.c
  modpost: fix trailing comma
  KBuild: silence "'scripts/unifdef' is up to date."
  kbuild: Add extra gcc checks
  kbuild: reenable section mismatch analysis
  unifdef: update to upstream version 2.5
2011-03-21 15:55:26 -07:00
Borislav Petkov
4a5838ad9d kbuild: Add extra gcc checks
Add a 'W=1' Makefile switch which adds additional checking per build
object.

The idea behind this option is targeted at developers who, in the
process of writing their code, want to do the occasional

make W=1 [target.o]

and let gcc do more extensive code checking for them. Then, they
could eyeball the output for valid gcc warnings about various
bugs/discrepancies which are not reported during the normal build
process.

For more background information and a use case, read through this
thread: http://marc.info/?l=kernel-janitors&m=129802065918147&w=2

Cc: Michal Marek <mmarek@suse.cz>
Cc: linux-kbuild@vger.kernel.org
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2011-03-09 15:35:35 +01:00