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(-)

1 files changed, 223 insertions, 0 deletions

diff --git a/samples/arm-unknown-eabi/crosstool.config b/samples/arm-unknown-eabi/crosstool.config
new file mode 100644
index 00000000..e5cfaef6
--- /dev/null
+++ b/samples/arm-unknown-eabi/crosstool.config
@@ -0,0 +1,223 @@
+#
+# Automatically generated make config: don't edit
+# crosstool-NG version: 1.2.0+svn_trunk@1001M
+# Thu Sep 11 00:53:13 2008
+#
+
+#
+# Paths and misc options
+#
+
+#
+# crosstool-NG behavior
+#
+# CT_OBSOLETE is not set
+CT_EXPERIMENTAL=y
+# CT_BROKEN is not set
+# CT_DEBUG_CT is not set
+
+#
+# Paths
+#
+CT_LOCAL_TARBALLS_DIR="${HOME}/src"
+CT_SAVE_TARBALLS=y
+CT_WORK_DIR="${CT_TOP_DIR}/targets"
+CT_PREFIX_DIR="${HOME}/x-tools/${CT_TARGET}"
+CT_INSTALL_DIR="${CT_PREFIX_DIR}"
+# CT_CUSTOM_PATCH is not set
+CT_REMOVE_DOCS=y
+CT_INSTALL_DIR_RO=y
+
+#
+# Downloading
+#
+# CT_FORCE_DOWNLOAD is not set
+# CT_USE_PROXY is not set
+CT_PROXY_TYPE="none"
+# CT_USE_LAN_MIRROR is not set
+CT_CONNECT_TIMEOUT=10
+# CT_ONLY_DOWNLOAD is not set
+
+#
+# Extracting
+#
+# CT_FORCE_EXTRACT is not set
+CT_OVERIDE_CONFIG_GUESS_SUB=y
+# CT_ONLY_EXTRACT is not set
+
+#
+# Build behavior
+#
+CT_PARALLEL_JOBS=1
+CT_LOAD=0
+CT_NICE=0
+CT_USE_PIPES=y
+CT_CONFIG_SHELL_ASH=y
+
+#
+# Logging
+#
+# CT_LOG_ERROR is not set
+# CT_LOG_WARN is not set
+# CT_LOG_INFO is not set
+CT_LOG_EXTRA=y
+# CT_LOG_DEBUG is not set
+# CT_LOG_ALL is not set
+CT_LOG_LEVEL_MAX="EXTRA"
+# CT_LOG_SEE_TOOLS_WARN is not set
+CT_LOG_PROGRESS_BAR=y
+CT_LOG_TO_FILE=y
+CT_LOG_FILE_COMPRESS=y
+
+#
+# Target options
+#
+CT_ARCH="arm"
+CT_ARCH_SUPPORT_ARCH=y
+# CT_ARCH_SUPPORT_ABI is not set
+CT_ARCH_SUPPORT_CPU=y
+CT_ARCH_SUPPORT_TUNE=y
+CT_ARCH_SUPPORT_FPU=y
+CT_ARCH_SUPPORTS_BOTH_ENDIAN=y
+# CT_ARCH_DEFAULT_BE is not set
+CT_ARCH_DEFAULT_LE=y
+CT_ARCH_ARCH=""
+CT_ARCH_CPU=""
+CT_ARCH_TUNE=""
+CT_ARCH_FPU=""
+# CT_ARCH_BE is not set
+CT_ARCH_LE=y
+CT_ARCH_FLOAT_HW=y
+# CT_ARCH_FLOAT_SW is not set
+CT_TARGET_CFLAGS=""
+CT_TARGET_LDFLAGS=""
+
+#
+# General target options
+#
+CT_BARE_METAL=y
+# CT_ARCH_alpha is not set
+CT_ARCH_arm=y
+CT_ARCH_ARM_EABI=y
+# CT_ARCH_ia64 is not set
+# CT_ARCH_mips is not set
+# CT_ARCH_powerpc is not set
+# CT_ARCH_sh is not set
+# CT_ARCH_x86 is not set
+# CT_ARCH_x86_64 is not set
+
+#
+# Target optimisations
+#
+
+#
+# Toolchain options
+#
+
+#
+# General toolchain options
+#
+CT_USE_SYSROOT=y
+CT_TARGET_VENDOR="unknown"
+CT_TARGET_ALIAS_SED_EXPR=""
+CT_TARGET_ALIAS=""
+
+#
+# Toolchain type
+#
+# CT_NATIVE is not set
+CT_CROSS=y
+# CT_CROSS_NATIVE is not set
+# CT_CANADIAN is not set
+CT_TOOLCHAIN_TYPE="cross"
+CT_BUILD=""
+CT_CC_NATIVE="gcc"
+CT_KERNEL="none"
+
+#
+# GMP and MPFR
+#
+CT_GMP_MPFR=y
+CT_GMP_V_4_2_2=y
+CT_GMP_VERSION="4.2.2"
+CT_GMP_CHECK=y
+CT_MPFR_V_2_3_1=y
+CT_MPFR_VERSION="2.3.1"
+CT_MPFR_CHECK=y
+
+#
+# binutils
+#
+CT_BINUTILS_VERSION="2.18"
+# CT_BINUTILS_V_2_14 is not set
+# CT_BINUTILS_V_2_15 is not set
+# CT_BINUTILS_V_2_16_1 is not set
+# CT_BINUTILS_V_2_17 is not set
+CT_BINUTILS_V_2_18=y
+# CT_BINUTILS_V_2_18_50_0_4 is not set
+# CT_BINUTILS_V_2_18_50_0_6 is not set
+# CT_BINUTILS_V_2_18_50_0_7 is not set
+# CT_BINUTILS_V_2_18_50_0_8 is not set
+CT_BINUTILS_EXTRA_CONFIG=""
+
+#
+# C compiler
+#
+CT_CC_GCC=y
+CT_CC_VERSION="4.3.1"
+CT_CC="gcc"
+# CT_CC_V_2_95_3 is not set
+# CT_CC_V_3_2_3 is not set
+# CT_CC_V_3_3_6 is not set
+# CT_CC_V_3_4_6 is not set
+# CT_CC_V_4_0_0 is not set
+# CT_CC_V_4_0_1 is not set
+# CT_CC_V_4_0_2 is not set
+# CT_CC_V_4_0_3 is not set
+# CT_CC_V_4_0_4 is not set
+# CT_CC_V_4_1_0 is not set
+# CT_CC_V_4_1_1 is not set
+# CT_CC_V_4_1_2 is not set
+# CT_CC_V_4_2_0 is not set
+# CT_CC_V_4_2_1 is not set
+# CT_CC_V_4_2_2 is not set
+# CT_CC_V_4_2_3 is not set
+# CT_CC_V_4_2_4 is not set
+# CT_CC_V_4_3_0 is not set
+CT_CC_V_4_3_1=y
+CT_CC_GCC_4_3_or_later=y
+CT_CC_CORE_EXTRA_CONFIG=""
+CT_CC_PKGVERSION="crosstool-NG-${CT_VERSION}"
+CT_CC_BUGURL=""
+CT_CC_SUPPORT_CXX=y
+CT_CC_SUPPORT_FORTRAN=y
+CT_CC_SUPPORT_JAVA=y
+CT_CC_SUPPORT_ADA=y
+CT_CC_SUPPORT_OBJC=y
+CT_CC_SUPPORT_OBJCXX=y
+
+#
+# Only C language supported on bare metal
+#
+CT_LIBC="none"
+
+#
+# Tools facilities
+#
+# CT_SSTRIP is not set
+
+#
+# Debug facilities
+#
+CT_GDB=y
+CT_GDB_CROSS=y
+# CT_GDB_CROSS_STATIC is not set
+# CT_GDB_CROSS_INSIGHT is not set
+# CT_GDB_V_snapshot is not set
+# CT_GDB_V_6_4 is not set
+# CT_GDB_V_6_5 is not set
+# CT_GDB_V_6_6 is not set
+# CT_GDB_V_6_7 is not set
+# CT_GDB_V_6_7_1 is not set
+CT_GDB_V_6_8=y
+CT_GDB_VERSION="6.8"