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(-)

# Linux kernel options

choice

    bool

    prompt "Get kernel headers from:"

config KERNEL_LINUX_HEADERS_INSTALL

    bool

    prompt "kernel's 'headers_install'"

    help

      This will make use of the new headers_install rule in recent kernels.

      This is most probably what you want to use.

config KERNEL_LINUX_HEADERS_USE_CUSTOM_DIR

    bool

    prompt "Use custom directory"

    help

      If you have some kernel headers lying around, you can enter the path

      below.

endchoice

config KERNEL_VERSION_SEE_EXTRAVERSION

    bool

    prompt "See extra versions"

    default n

    depends on KERNEL_LINUX_HEADERS_COPY || KERNEL_LINUX_HEADERS_INSTALL

    help

      See extra versions (kernel with 4 numbers, eg 2.6.19.1).

      If you say 'no', you'll only see sub-level, 3-digit versions.

      If you say 'yes', you'll see far more versions!

      It is recommended that you say 'no', unless you _*know*_

      that an extra version fixes a headers bug.

if KERNEL_LINUX_HEADERS_INSTALL

source config/kernel/linux_headers_install.in

endif

config KERNEL_LINUX_HEADERS_CUSTOM_DIR

    string

    prompt "Where are those custom headers?"

    depends on KERNEL_LINUX_HEADERS_USE_CUSTOM_DIR

    help

      Enter the base directory where the headers are to be found.

      Eg. if the headers are in /some/place/include, then enter /some/place.

          This is the same path you entered when you typed:

            make INSTALL_HDR_PATH=/some/place headers_install

if ! KERNEL_LINUX_HEADERS_USE_CUSTOM_DIR

choice

    bool

    prompt "Kernel verbosity:"

    default KERNEL_LINUX_VERBOSITY_0

config KERNEL_LINUX_VERBOSITY_0

    bool

    prompt "Simplified"

    help

      Print simplified command lines.

config KERNEL_LINUX_VERBOSITY_1

    bool

    prompt "Full commands"

    help

      Print full command lines.

config KERNEL_LINUX_VERBOSITY_2

    bool

    prompt "Exec reasons"

    help

      Print the reasons why a make target is rebuild.

endchoice

config KERNEL_LINUX_VERBOSE_LEVEL

    int

    default 0 if KERNEL_LINUX_VERBOSITY_0

    default 1 if KERNEL_LINUX_VERBOSITY_1

    default 2 if KERNEL_LINUX_VERBOSITY_2

endif