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  1. 03 Aug, 2010 1 commit
    • Sam Ravnborg's avatar
      kbuild: allow assignment to {A,C,LD}FLAGS_MODULE on the command line · 6588169d
      Sam Ravnborg authored 
      It is now possible to assign options to AS, CC and LD
on the command line - which is only used when building modules.

{A,C,LD}FLAGS_MODULE was all used both in the top-level Makefile
in the arch makefiles, thus users had no way to specify
additional options to AS, CC, LD when building modules
without overriding the original value.

Introduce a new set of variables KBUILD_{A,C,LD}FLAGS_MODULE
that is used by arch specific files and free up
{A,C,LD}FLAGS_MODULE so they can be assigned on
the command line.

All arch Makefiles that used the old variables has been updated.

Note: Previously we had a MODFLAGS variable for both
AS and CC. But in favour of consistency this was dropped.
So in some cases arch Makefile has one assignmnet replaced by
two assignmnets.

Note2: MODFLAGS was not documented and is dropped
without any notice. I do not expect much/any breakage
from this.
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
Cc: Denys Vlasenko <vda.linux@googlemail.com>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Acked-by: Mike Frysinger <vapier@gentoo.org> [blackfin]
Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> [avr32]
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
      6588169d
  3. 14 Jul, 2010 1 commit
    • Andi Kleen's avatar
      Kbuild: Add option to set -femit-struct-debug-baseonly · d6f4ceb7
      Andi Kleen authored 
      Newer gcc has a -femit-struct-debug-baseonly option that dramatically
reduces the size of object files with debug info. What it does
is to only emit type information for structures when the structures
are defined in the same file or in a header file.

This means the type information for most headers are not included.
This is not good when the type information is actually
needed (e.g. with kgdb or systemtap)

But often kernel hackers only care about line numbers and don't
need all the type information anyways. In this case setting
the option can be a big win:

A build dir for a specific x86-64 configuration with gcc 4.5
shrunk from 2.3G to 1.2G. The compilation was also nearly a minute
faster.
Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
[mmarek: reformatted help text]
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
      d6f4ceb7
  5. 29 Jun, 2010 1 commit
  7. 18 Jun, 2010 2 commits
  9. 04 Jun, 2010 1 commit
    • Don Zickus's avatar
      Makefile.build: make KBUILD_SYMTYPES work again · e26d6b83
      Don Zickus authored 
      commit 37a8d9f6 tried to combine some
duplicate code and accidentally broke how KBUILD_SYMTYPES worked

This fixes the code to match the original intention by the author who
originally added the code I believe.

The fixes include:
- removing extra whitespaces in the if-statements
- moving the if-statement from around the -r to the -T
- adding a second arg to cmd_gensymtypes to simplify the options passed
  to genksyms.

Tested by instrumenting genksyms and seeing what options were passed in
during a make, KBUILD_SYMTYPES make, and when a foo.symref was created.

Everything compiled and looked ok.
Signed-off-by: default avatarDon Zickus <dzickus@redhat.com>
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
      e26d6b83
  11. 27 May, 2010 1 commit
  13. 06 May, 2010 1 commit
  15. 14 Apr, 2010 6 commits
  17. 08 Apr, 2010 1 commit
  19. 23 Mar, 2010 4 commits
  21. 11 Mar, 2010 1 commit
  23. 10 Mar, 2010 1 commit
  25. 08 Mar, 2010 2 commits
    • Michal Marek's avatar
      Revert "kbuild: specify absolute paths for cscope" · e93bc1a0
      Michal Marek authored 
      This reverts commit eb8f844c. Ian
Campbell writes:
> I keep my kernel source tree on a more powerful build box where I run my
> builds etc (including "make cscope") but run my editor from my
> workstation with an NFS mount to the source. This worked fine for me
> using relative paths for cscope. Using absolute paths in cscope breaks
> this previously working setup because the root path is not the same on
> both systems. I guess this is similar to moving the source tree around.
>
> Without wanting to start a flamewar it really sounds to me like we are
> working around a vim (or cscope) bug here, emacs with cscope bindings
> works fine in this configuration.

Given that absolute paths can be forced by make O=. cscope, change the
default back to relative paths.

Ian Campbell <ijc@hellion.org.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
      e93bc1a0
    • Michal Marek's avatar
      kbuild: Do not unnecessarily regenerate modules.builtin · a6c36632
      Michal Marek authored 
      Only regenerate it if the configuration has changed. Also, do this after
the modules build to fix errors with some weird Makefiles that are
generated during build.
Reported-by: default avatarEric Miao <eric.y.miao@gmail.com>
Signed-off-by: default avatarMichal Marek <mmarek@suse.cz>
      a6c36632
  27. 07 Mar, 2010 9 commits
  29. 03 Mar, 2010 8 commits
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