Introduce a new EXPERIMENTAL feature: BARE_METAL.
This should ultimately llow to build bare-metal compilers, for targets that have no kernel and no C library.
Move the C library build script to their own sub-directory; introduce an empty build script for bare-metal.
Move the compiler build script to its own sub-directory.
Move the kernel build script to its own sub-directory; introduce an empty build script for bare-metal.
Update the ARM target tuples to enable bare-metal targets.
Add two ARM bare-metal samples.
Add latest Linux kernel versions.

/trunk/scripts/build/kernel/none.sh | 77 6 71 0 +----
/trunk/scripts/build/cc/gcc.sh | 58 41 17 0 ++-
/trunk/scripts/build/libc/none.sh | 513 9 504 0 +-----------------------------
/trunk/scripts/crosstool.sh | 17 9 8 0 +
/trunk/scripts/functions | 6 4 2 0 +
/trunk/scripts/showSamples.sh | 6 3 3 0
/trunk/samples/arm-unknown-elf/crosstool.config | 225 225 0 0 +++++++++++++
/trunk/samples/arm-unknown-eabi/crosstool.config | 223 223 0 0 +++++++++++++
/trunk/config/kernel/linux_headers_install.in | 64 27 37 0 ++--
/trunk/config/kernel.in | 9 8 1 0 +
/trunk/config/toolchain.in | 1 1 0 0 +
/trunk/config/cc/gcc.in | 3 3 0 0 +
/trunk/config/debug/dmalloc.in | 1 1 0 0 +
/trunk/config/debug/gdb.in | 4 3 1 0 +
/trunk/config/debug/strace.in | 1 1 0 0 +
/trunk/config/debug/duma.in | 1 1 0 0 +
/trunk/config/cc.in | 8 8 0 0 +
/trunk/config/target.in | 13 13 0 0 +
/trunk/config/binutils.in | 1 1 0 0 +
/trunk/config/gmp_mpfr.in | 1 1 0 0 +
/trunk/config/libc.in | 17 11 6 0 +
/trunk/arch/arm/functions | 3 1 2 0 -
22 files changed, 600 insertions(+), 652 deletions(-)

# Options related to how the build behaves

comment "Build behavior"

config PARALLEL_JOBS

    int

    prompt "Number of parallel jobs"

    default 1

    help

      Number of jobs make will be allowed to run concurently.

      Set this higher than the number of processors you have, but not too high.

      A good rule of thumb is twice the number of processors you have.

      Enter 1 (or 0) to have only one job at a time.

config LOAD

    int

    prompt "Maximum allowed load"

    default 0

    help

      Specifies that no new jobs should be started if there are others jobs

      running and the load average is at least this value.

      Makes sense on SMP machines only.

      Enter 0 to have no limit on the load average.

      Note: only the integer part of the load is allowed here (you can't enter

            0.75 for example).

config NICE

    int

    prompt "Nice level"

    default 0

    range 0 19

    help

      Renices the build process up.

config USE_PIPES

    bool

    prompt "Use -pipe"

    default y

    help

      Use gcc's option -pipe to use pipes rather than temp files when building

      the toolchain.

config CONFIG_SHELL_ASH

    bool

    prompt "Use 'ash' as CONFIG_SHELL"

    default n

    help

      Use /bin/ash as the shell used by ./configure scripts.

      ./configure scripts make intensive use of calling a sub-shell, and the

      traditional bash is slow, whereas ash is faster.

      Saying 'y' here should be safe enough, but some components may not

      accept using a shell other than bash (this is most probably true for

      old versions). If you have trouble, say 'n' here and see if it fixes it.