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(-)

 # Build script for libelf

 is_enabled="${CT_LIBELF}"

 do_print_filename() {

     [ "{CT_LIBELF}" = "y" ] || return 0

     echo "libelf-${CT_LIBELF_VERSION}"

 }

 do_tools_libelf_get() {

     # The server hosting libelf will return an "HTTP 300 : Multiple Choices"

     # error code if we try to download a file that does not exists there.

     # So we have to request the file with an explicit extension.

     CT_GetFile "libelf-${CT_LIBELF_VERSION}" .tar.gz http://www.mr511.de/software/

 }

 do_tools_libelf_extract() {

     CT_ExtractAndPatch "libelf-${CT_LIBELF_VERSION}"

 }

 do_tools_libelf_build() {

     CT_DoStep INFO "Installing libelf"

     mkdir -p "${CT_BUILD_DIR}/build-libelf"

     CT_Pushd "${CT_BUILD_DIR}/build-libelf"

     CT_DoLog EXTRA "Configuring libelf"

     CC="${CT_TARGET}-gcc"                                   \

     CT_DoExecLog ALL                                        \

     "${CT_SRC_DIR}/libelf-${CT_LIBELF_VERSION}/configure"   \

         --build=${CT_BUILD}                                 \

         --host=${CT_TARGET}                                 \

         --target=${CT_TARGET}                               \

         --prefix=/usr                                       \

         --enable-compat                                     \

         --enable-elf64                                      \

         --enable-shared                                     \

         --enable-extended-format                            \

         --enable-static

     CT_DoLog EXTRA "Building libelf"

     CT_DoExecLog ALL make

     CT_DoLog EXTRA "Installing libelf"

     CT_DoExecLog ALL make instroot="${CT_SYSROOT_DIR}" install

     CT_Popd

     CT_EndStep

 }