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, 283 insertions, 0 deletions

diff --git a/scripts/build/libc/eglibc.sh b/scripts/build/libc/eglibc.sh
new file mode 100644
index 0000000..6b6e718
--- /dev/null
+++ b/scripts/build/libc/eglibc.sh
@@ -0,0 +1,283 @@
+# eglibc build functions (initially by Thomas JOURDAN).
+
+do_print_filename() {
+    [ "${CT_LIBC}" = "eglibc" ] || return 0
+    echo "eglibc-${CT_LIBC_VERSION}"
+    for addon in $(do_libc_add_ons_list " "); do
+        # NPTL addon is not to be downloaded, in any case
+        [ "${addon}" = "nptl" ] && continue || true
+        echo "eglibc-${addon}-${CT_LIBC_VERSION}"
+    done
+}
+
+# Download eglibc repository
+do_eglibc_get() {
+    CT_HasOrAbort svn
+
+    case "${CT_LIBC_VERSION}" in
+        trunk)  svn_url="svn://svn.eglibc.org/trunk";;
+        *)      svn_url="svn://svn.eglibc.org/branches/eglibc-${CT_LIBC_VERSION}";;
+    esac
+
+    CT_MktempDir tmp_dir
+    CT_Pushd "${tmp_dir}"
+
+    case "${CT_EGLIBC_CHECKOUT}" in
+        y)  svn_action="checkout";;
+        *)  svn_action="export --force";;
+    esac
+
+    CT_DoSetProxy ${CT_PROXY_TYPE}
+    CT_DoExecLog ALL svn ${svn_action} -r "${CT_EGLIBC_REVISION:-HEAD}" "${svn_url}" . 2>&1
+
+    # Compress eglibc
+    CT_DoExecLog ALL mv libc "${CT_LIBC_FILE}"
+    CT_DoExecLog ALL tar cjf "${CT_TARBALLS_DIR}/${CT_LIBC_FILE}.tar.bz2" "${CT_LIBC_FILE}"
+
+    # Compress linuxthreads, localedef and ports
+    # Assign them the name the way ct-ng like it
+    for addon in linuxthreads localedef ports; do
+        CT_DoExecLog ALL tar cjf "${CT_TARBALLS_DIR}/${CT_LIBC}-${addon}-${CT_LIBC_VERSION}.tar.bz2" "${addon}"
+    done
+
+    CT_Popd
+
+    # Remove source files
+    CT_DoExecLog ALL rm -rf "${tmp_dir}"
+}
+
+# Download glibc
+do_libc_get() {
+    # eglibc is only available through subversion, there are no
+    # snapshots available. Moreover, addons will be downloaded
+    # simultaneously.
+
+    # build filename
+    eglibc="${CT_LIBC_FILE}.tar.bz2"
+    eglibc_linuxthreads="${CT_LIBC}-linuxthreads-${CT_LIBC_VERSION}.tar.bz2"
+    eglibc_localedef="${CT_LIBC}-localedef-${CT_LIBC_VERSION}.tar.bz2"
+    eglibc_ports="${CT_LIBC}-ports-${CT_LIBC_VERSION}.tar.bz2"
+
+    # Check if every tarballs are already present
+    if [ -a "${CT_TARBALLS_DIR}/${eglibc}" ]              && \
+       [ -a "${CT_TARBALLS_DIR}/${eglibc_linuxthreads}" ] && \
+       [ -a "${CT_TARBALLS_DIR}/${eglibc_localedef}" ]    && \
+       [ -a "${CT_TARBALLS_DIR}/${eglibc_ports}" ]; then
+        CT_DoLog DEBUG "Already have 'eglibc-${CT_LIBC_VERSION}'"
+        return 0
+    fi
+
+    if [ -a "${CT_LOCAL_TARBALLS_DIR}/${eglibc}" ]              && \
+       [ -a "${CT_LOCAL_TARBALLS_DIR}/${eglibc_linuxthreads}" ] && \
+       [ -a "${CT_LOCAL_TARBALLS_DIR}/${eglibc_localedef}" ]    && \
+       [ -a "${CT_LOCAL_TARBALLS_DIR}/${eglibc_ports}" ]        && \
+       [ "${CT_FORCE_DOWNLOAD}" != "y" ]; then
+        CT_DoLog DEBUG "Got 'eglibc-${CT_LIBC_VERSION}' from local storage"
+        for file in ${eglibc} ${eglibc_linuxthreads} ${eglibc_localedef} ${eglibc_ports}; do
+            CT_DoExecLog ALL ln -s "${CT_LOCAL_TARBALLS_DIR}/${file}" "${CT_TARBALLS_DIR}/${file}"
+        done
+        return 0
+    fi
+
+    # Not found locally, try from the network
+    CT_DoLog EXTRA "Retrieving 'eglibc-${CT_LIBC_VERSION}'"
+    do_eglibc_get
+
+    if [ "${CT_SAVE_TARBALLS}" = "y" ]; then
+        CT_DoLog EXTRA "Saving 'eglibc-${CT_LIBC_VERSION}' to local storage"
+        for file in ${eglibc} ${eglibc_linuxthreads} ${eglibc_localedef} ${eglibc_ports}; do
+            CT_DoExecLog ALL mv -f "${CT_TARBALLS_DIR}/${file}" "${CT_LOCAL_TARBALLS_DIR}"
+            CT_DoExecLog ALL ln -s "${CT_LOCAL_TARBALLS_DIR}/${file}" "${CT_TARBALLS_DIR}/${file}"
+        done
+    fi
+
+    return 0
+}
+
+# Extract eglibc
+do_libc_extract() {
+    CT_ExtractAndPatch "${CT_LIBC_FILE}"
+
+    # C library addons
+    for addon in $(do_libc_add_ons_list " "); do
+        # NPTL addon is not to be extracted, in any case
+        [ "${addon}" = "nptl" ] && continue || true
+        CT_ExtractAndPatch "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}"
+    done
+
+    return 0
+}
+
+# There is nothing to do for eglibc check config
+do_libc_check_config() {
+    :
+}
+
+# This function installs the glibc headers needed to build the core compiler
+do_libc_headers() {
+    # Instead of doing two time the same actions, headers will
+    # be installed with start files
+    :
+}
+
+# Build and install start files
+do_libc_start_files() {
+    CT_DoStep INFO "Installing C library headers / start files"
+
+    mkdir -p "${CT_BUILD_DIR}/build-libc-startfiles"
+    cd "${CT_BUILD_DIR}/build-libc-startfiles"
+
+    CT_DoLog EXTRA "Configuring C library"
+
+    cross_cc=$(CT_Which "${CT_TARGET}-gcc")
+    cross_cxx=$(CT_Which "${CT_TARGET}-g++")
+    cross_ar=$(CT_Which "${CT_TARGET}-ar")
+    cross_ranlib=$(CT_Which "${CT_TARGET}-ranlib")
+    
+    CT_DoLog DEBUG "Using gcc for target: '${cross_cc}'"
+    CT_DoLog DEBUG "Using g++ for target: '${cross_cxx}'"
+    CT_DoLog DEBUG "Using ar for target: '${cross_ar}'"
+    CT_DoLog DEBUG "Using ranlib for target: '${cross_ranlib}'"
+
+    BUILD_CC=${CT_CC_NATIVE}                    \
+    CC=${cross_cc}                              \
+    CXX=${cross_cxx}                            \
+    AR=${cross_ar}                              \
+    RANLIB=${cross_ranlib}                      \
+    CT_DoExecLog ALL                            \
+    "${CT_SRC_DIR}/${CT_LIBC_FILE}/configure"   \
+        --prefix=/usr                           \
+        --with-headers="${CT_HEADERS_DIR}"      \
+        --build="${CT_UNIQ_BUILD}"              \
+        --host="${CT_TARGET}"                   \
+        --disable-profile                       \
+        --without-gd                            \
+        --without-cvs                           \
+        --enable-add-ons
+
+    CT_DoLog EXTRA "Installing C library headers"
+
+    # use the 'install-headers' makefile target to install the
+    # headers
+
+    CT_DoExecLog ALL                    \
+    make install-headers                \
+         install_root=${CT_SYSROOT_DIR} \
+         install-bootstrap-headers=yes
+
+    CT_DoLog EXTRA "Installing C library start files"
+
+    # there are a few object files needed to link shared libraries,
+    # which we build and install by hand
+
+    CT_DoExecLog ALL mkdir -p ${CT_SYSROOT_DIR}/usr/lib
+    CT_DoExecLog ALL make csu/subdir_lib
+    CT_DoExecLog ALL cp csu/crt1.o csu/crti.o csu/crtn.o \
+        ${CT_SYSROOT_DIR}/usr/lib
+
+    # Finally, 'libgcc_s.so' requires a 'libc.so' to link against.  
+    # However, since we will never actually execute its code, 
+    # it doesn't matter what it contains.  So, treating '/dev/null' 
+    # as a C source file, we produce a dummy 'libc.so' in one step
+
+    CT_DoExecLog ALL ${cross_cc} -nostdlib -nostartfiles -shared -x c /dev/null -o ${CT_SYSROOT_DIR}/usr/lib/libc.so
+
+    CT_EndStep
+}
+
+# This function builds and install the full glibc
+do_libc() {
+    CT_DoStep INFO "Installing C library"
+
+    mkdir -p "${CT_BUILD_DIR}/build-libc"
+    cd "${CT_BUILD_DIR}/build-libc"
+
+    CT_DoLog EXTRA "Configuring C library"
+
+    # Add some default glibc config options if not given by user.
+    # We don't need to be conditional on wether the user did set different
+    # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG is passed after extra_config
+
+    extra_config="--enable-kernel=$(echo ${CT_LIBC_GLIBC_MIN_KERNEL} |sed -r -e 's/^([^.]+\.[^.]+\.[^.]+)(|\.[^.]+)$/\1/;')"
+
+    case "${CT_THREADS}" in
+        nptl)           extra_config="${extra_config} --with-__thread --with-tls";;
+        linuxthreads)   extra_config="${extra_config} --with-__thread --without-tls --without-nptl";;
+        none)           extra_config="${extra_config} --without-__thread --without-nptl"
+                        case "${CT_LIBC_GLIBC_EXTRA_CONFIG}" in
+                            *-tls*) ;;
+                            *) extra_config="${extra_config} --without-tls";;
+                        esac
+                        ;;
+    esac
+
+    case "${CT_SHARED_LIBS}" in
+        y) extra_config="${extra_config} --enable-shared";;
+        *) extra_config="${extra_config} --disable-shared";;
+    esac
+
+    case "${CT_ARCH_FLOAT_HW},${CT_ARCH_FLOAT_SW}" in
+        y,) extra_config="${extra_config} --with-fp";;
+        ,y) extra_config="${extra_config} --without-fp";;
+    esac
+
+    case "$(do_libc_add_ons_list ,)" in
+        "") ;;
+        *)  extra_config="${extra_config} --enable-add-ons=$(do_libc_add_ons_list ,)";;
+    esac
+
+    extra_cc_args="${extra_cc_args} ${CT_ARCH_ENDIAN_OPT}"
+
+    cross_cc=$(CT_Which "${CT_TARGET}-gcc")    
+
+    CT_DoLog DEBUG "Using gcc for target:     '${cross_cc}'"
+    CT_DoLog DEBUG "Configuring with addons : '$(do_libc_add_ons_list ,)'"
+    CT_DoLog DEBUG "Extra config args passed: '${extra_config}'"
+    CT_DoLog DEBUG "Extra CC args passed    : '${extra_cc_args}'"
+
+    BUILD_CC=${CT_CC_NATIVE}                                        \
+    CFLAGS="${CT_TARGET_CFLAGS} ${CT_LIBC_GLIBC_EXTRA_CFLAGS} -O"   \
+    CC="${CT_TARGET}-gcc ${CT_LIBC_EXTRA_CC_ARGS} ${extra_cc_args}" \
+    AR=${CT_TARGET}-ar                                              \
+    RANLIB=${CT_TARGET}-ranlib                                      \
+    CT_DoExecLog ALL                                                \
+    "${CT_SRC_DIR}/${CT_LIBC_FILE}/configure"                       \
+        --prefix=/usr                                               \
+        --with-headers="${CT_HEADERS_DIR}"                          \
+        --build=${CT_UNIQ_BUILD}                                    \
+        --host=${CT_TARGET}                                         \
+        --disable-profile                                           \
+        --without-gd                                                \
+        --without-cvs                                               \
+        ${extra_config}                                             \
+        ${CT_LIBC_GLIBC_EXTRA_CONFIG}
+    
+    CT_DoLog EXTRA "Building C library"
+
+    CT_DoExecLog ALL make
+
+    CT_DoLog EXTRA "Installing C library"
+
+    CT_DoExecLog ALL make install install_root="${CT_SYSROOT_DIR}"
+
+    CT_EndStep
+}
+
+# This function finishes the glibc install
+do_libc_finish() {
+    # Nothing to be done for eglibc
+    :
+}
+
+# Build up the addons list, separated with $1
+do_libc_add_ons_list() {
+    local sep="$1"
+    local addons_list=$(echo "${CT_LIBC_ADDONS_LIST//,/${sep}}" |tr -s ,)
+    case "${CT_THREADS}" in
+        none)   ;;
+        *)      addons_list="${addons_list}${sep}${CT_THREADS}";;
+    esac
+    [ "${CT_LIBC_GLIBC_USE_PORTS}" = "y" ] && addons_list="${addons_list}${sep}ports"
+    addons_list="${addons_list%%${sep}}"
+    echo "${addons_list##${sep}}"
+}