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, 9 insertions, 8 deletions

diff --git a/scripts/crosstool.sh b/scripts/crosstool.sh
index f0eaa82..35aa247 100755
--- a/scripts/crosstool.sh
+++ b/scripts/crosstool.sh
@@ -356,8 +356,8 @@ fi
 . "${CT_LIB_DIR}/scripts/build/gmp.sh"
 . "${CT_LIB_DIR}/scripts/build/mpfr.sh"
 . "${CT_LIB_DIR}/scripts/build/binutils.sh"
-. "${CT_LIB_DIR}/scripts/build/libc_${CT_LIBC}.sh"
-. "${CT_LIB_DIR}/scripts/build/cc_${CT_CC}.sh"
+. "${CT_LIB_DIR}/scripts/build/libc/${CT_LIBC}.sh"
+. "${CT_LIB_DIR}/scripts/build/cc/${CT_CC}.sh"
 . "${CT_LIB_DIR}/scripts/build/debug.sh"
 . "${CT_LIB_DIR}/scripts/build/tools.sh"
 
@@ -433,12 +433,13 @@ if [ "${CT_ONLY_DOWNLOAD}" != "y" -a "${CT_ONLY_EXTRACT}" != "y" ]; then
     find "${CT_PREFIX_DIR}/bin" -name "${CT_HOST}-"'*' -exec rm -fv {} \; |CT_DoLog DEBUG
     rm -fv "${CT_PREFIX_DIR}/bin/makeinfo" |CT_DoLog DEBUG
 
-    # Install the /populator/
-    CT_DoLog EXTRA "Installing the populate helper"
-    sed -r -e 's|@@CT_TARGET@@|'"${CT_TARGET}"'|g;' \
-        "${CT_LIB_DIR}/tools/populate.in"           \
-        >"${CT_PREFIX_DIR}/bin/${CT_TARGET}-populate"
-    chmod 755 "${CT_PREFIX_DIR}/bin/${CT_TARGET}-populate"
+    if [ "${CT_BARE_METAL}" != "y" ]; then
+        CT_DoLog EXTRA "Installing the populate helper"
+        sed -r -e 's|@@CT_TARGET@@|'"${CT_TARGET}"'|g;' \
+            "${CT_LIB_DIR}/tools/populate.in"           \
+            >"${CT_PREFIX_DIR}/bin/${CT_TARGET}-populate"
+        chmod 755 "${CT_PREFIX_DIR}/bin/${CT_TARGET}-populate"
+    fi
 
     # Create the aliases to the target tools
     CT_DoLog EXTRA "Creating toolchain aliases"