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  1. Sep 20, 2009
    • Sam Ravnborg's avatar
      kbuild: introduce ld-option · 691ef3e7
      Sam Ravnborg authored 
      

ld-option is used to check if $(LD) supports a specific option.

Based on patch from Andi Kleen.

Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
First use is to check if option -X is supported (upcoming patch).
Theis is ne
      691ef3e7
    • Sam Ravnborg's avatar
      kbuild: rename ld-option to cc-ldoption · f86fd306
      Sam Ravnborg authored 
      

ld-option is misnamed as it test options to gcc, not to ld.
Renamed it to reflect this.

Cc: Andi Kleen <andi@firstfloor.org>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
      f86fd306
    • Cheng Renquan's avatar
      kconfig: make use of menu_get_ext_help in gconfig · 4779105e
      Cheng Renquan authored 
      

Futhermore, gconfig interface lack the "search a symbol" function, do later.

Signed-off-by: default avatarCheng Renquan <crquan@gmail.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
[sam: fix SEGV in gconfig]
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
      4779105e
    • Cheng Renquan's avatar
      kconfig: make use of menu_get_ext_help in "make config" · 66c4bd80
      Cheng Renquan authored 
      

Signed-off-by: default avatarCheng Renquan <crquan@gmail.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
      66c4bd80
    • Cheng Renquan's avatar
      kconfig: make use of menu_get_ext_help in qconfig · d74c15f3
      Cheng Renquan authored 
      

Signed-off-by: default avatarCheng Renquan <crquan@gmail.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
      d74c15f3
    • Cheng Renquan's avatar
      kconfig: make use of menu_get_ext_help in menuconfig · 1d525e7c
      Cheng Renquan authored 
      

The removed functions are moved into menu.c for sharing with
gconfig & xconfig & config.

Signed-off-by: default avatarCheng Renquan <crquan@gmail.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
      1d525e7c
    • Cheng Renquan's avatar
      kconfig: add menu_get_ext_help function to display more information · 6bd5999d
      Cheng Renquan authored 
      

The three functions are moved from mconf.c, then they can be shared in
all menuconfig & gconfig & xconfig & config.

  +void menu_get_ext_help(struct menu *menu, struct gstr *help)
  +static void get_prompt_str(struct gstr *r, struct property *prop)
  +void get_symbol_str(struct gstr *r, struct symbol *sym)

Signed-off-by: default avatarCheng Renquan <crquan@gmail.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
      6bd5999d
    • Cheng Renquan's avatar
      kconfig: add symbol value to help find the real depend · 544e433a
      Cheng Renquan authored 
      

Sometimes when configuring need to disable some unused item, but the item is
selected by many other items, it's hard to find the real dependency which
selected it, This patch add every symbol's value accompanied to make it
possible to find the real dependency easily.

An example is CONFIG_RFKILL,

  ---------------------- RF switch subsystem support ----------------------
  | CONFIG_RFKILL:                                                        |
  |                                                                       |
  | Say Y here if you want to have control over RF switches               |
  | found on many WiFi and Bluetooth cards.                               |
  |                                                                       |
  | To compile this driver as a module, choose M here: the                |
  | module will be called rfkill.                                         |
  |                                                                       |
  | Symbol: RFKILL [=m]                                                   |
  | Prompt: RF switch subsystem support                                   |
  |   Defined at net/rfkill/Kconfig:4                                     |
  |   Depends on: NET [=y]                                                |
  |   Location:                                                           |
  |     -> Networking support (NET [=y])                                  |
  |   Selected by: IWLCORE [=n] && NETDEVICES [=y] && !S390 [=S390] && PC |
  |                                                                       |
  ----------------------------------------------------------------( 99%)---

Signed-off-by: default avatarCheng Renquan <crquan@gmail.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
      544e433a
    • Robert P. J. Day's avatar
      kbuild: correct initramfs compression comment · 0bc9f9e6
      Robert P. J. Day authored 
      

Fix the Makefile comment since bzip2 is now supported.

Signed-off-by: default avatarRobert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
      0bc9f9e6
    • Sam Ravnborg's avatar
      kbuild: save ARCH & CROSS_COMPILE when building a kernel · 57554334
      Sam Ravnborg authored 
      

When building a kernel for a different architecture
kbuild requires the user always to specify ARCH and
CROSS_COMPILE on the command-line.

We use the asm symlink to detect if user forgets to
specify the correct ARCH value - but that symlink
is about to die. And we do now want to loose this check.

This patch save the settings of ARCH and CROSS_COMPILE
in two files named:

    include/generated/kernel.arch
    include/generated/kernel.cross

The settings are saved during "make *config" time
and always read.

If user try to change the settings we error out.

This works both for plain builds and for O=...
builds.

So now you can do:
$ mkdir sparc64
$ make O=sparc64 ARCH=sparc64 CROSS_COMPILE=sparc64-linux- defconfig
$ cd sparc64
$ make

Notice that you no longer need to tell kbuild
the settings of ARCH and CROSS_COMPILE when you type make
in the output directory.

Likewise for plain builds where you do not use O=...

Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
Cc: Roland McGrath <roland@redhat.com>
      57554334
    • Sam Ravnborg's avatar
      kbuild: use INSTALLKERNEL to select customized installkernel script · caa27b66
      Sam Ravnborg authored 
      Replace the use of CROSS_COMPILE to select a customized
installkernel script with the possibility to set INSTALLKERNEL
to select a custom installkernel script when running make:

    make INSTALLKERNEL=arm-installkernel install

With this patch we are now more consistent across
different architectures - they did not all support use
of CROSS_COMPILE.

The use of CROSS_COMPILE was a hack as this really belongs
to gcc/binutils and the installkernel script does not change
just because we change toolchain.

The use of CROSS_COMPILE caused troubles with an upcoming patch
that saves CROSS_COMPILE when a kernel is built - it would no
longer be installable.
[Thanks to Peter Z. for this hint]

This patch undos what Ian did in commit:

  0f8e2d62


  ("use ${CROSS_COMPILE}installkernel in arch/*/boot/install.sh")

The patch has been lightly tested on x86 only - but all changes
looks obvious.

Acked-by: default avatarPeter Zijlstra <peterz@infradead.org>
Acked-by: Mike Frysinger <vapier@gentoo.org> [blackfin]
Acked-by: Russell King <linux@arm.linux.org.uk> [arm]
Acked-by: Paul Mundt <lethal@linux-sh.org> [sh]
Acked-by: "H. Peter Anvin" <hpa@zytor.com> [x86]
Cc: Ian Campbell <icampbell@arcom.com>
Cc: Tony Luck <tony.luck@intel.com> [ia64]
Cc: Fenghua Yu <fenghua.yu@intel.com> [ia64]
Cc: Hirokazu Takata <takata@linux-m32r.org> [m32r]
Cc: Geert Uytterhoeven <geert@linux-m68k.org> [m68k]
Cc: Kyle McMartin <kyle@mcmartin.ca> [parisc]
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> [powerpc]
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> [s390]
Cc: Thomas Gleixner <tglx@linutronix.de> [x86]
Cc: Ingo Molnar <mingo@redhat.com> [x86]
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
      caa27b66
  3. Sep 19, 2009
  5. Sep 18, 2009