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#!/bin/bash

# This script is responsible for saving the current configuration into a
# sample to be used later on as a pre-configured target.

# What we need to save:
#  - the .config file
#  - the kernel .config file if specified
#  - the uClibc .config file if uClibc selected

. "${CT_LIB_DIR}/scripts/functions"

# Don't care about any log file
exec >/dev/null
rm -f "${tmp_log_file}"

# Parse the configuration file
CT_TestOrAbort "Configuration file not found. Please create one." -f "${CT_TOP_DIR}/.config"
. "${CT_TOP_DIR}/.config"

# Do not use a progress bar
unset CT_LOG_PROGRESS_BAR

# Parse the architecture-specific functions
. "${CT_LIB_DIR}/arch/${CT_ARCH}/functions"

# Target tuple: CT_TARGET needs a little love:
CT_DoBuildTargetTuple

# Kludge: if any of the config options needs either CT_TARGET or CT_TOP_DIR,
# re-parse them:
. "${CT_TOP_DIR}/.config"

# Override log options
unset CT_LOG_PROGRESS_BAR CT_LOG_ERROR CT_LOG_INFO CT_LOG_EXTRA CT_LOG_DEBUG LOG_ALL
CT_LOG_WARN=y
CT_LOG_LEVEL_MAX="WARN"

# Create the sample directory
if [ ! -d "${CT_TOP_DIR}/samples/${CT_TARGET}" ]; then
    mkdir -p "${CT_TOP_DIR}/samples/${CT_TARGET}"
fi

# Save the crosstool-NG config file
sed -r -e 's|^(CT_PREFIX_DIR)=.*|\1="${HOME}/x-tools/${CT_TARGET}"|;'       \
       -e 's|^# CT_LOG_TO_FILE is not set$|CT_LOG_TO_FILE=y|;'              \
       -e 's|^# CT_LOG_FILE_COMPRESS is not set$|CT_LOG_FILE_COMPRESS=y|;'  \
    <"${CT_TOP_DIR}/.config"                                                \
    >"${CT_TOP_DIR}/samples/${CT_TARGET}/crosstool.config"

# Function to copy a file to the sample directory
# Needed in case the file is already there (think of a previously available sample)
# Usage: CT_DoAddFileToSample <source> <dest>
CT_DoAddFileToSample() {
    source="$1"
    dest="$2"
    inode_s=$(ls -i "${source}")
    inode_d=$(ls -i "${dest}" 2>/dev/null || true)
    if [ "${inode_s}" != "${inode_d}" ]; then
        cp "${source}" "${dest}"
    fi
}

if [ "${CT_TOP_DIR}" = "${CT_LIB_DIR}" ]; then
    samp_top_dir="\${CT_LIB_DIR}"
else
    samp_top_dir="\${CT_TOP_DIR}"
fi

# Save the kernel .config file
if [ -n "${CT_KERNEL_LINUX_CONFIG_FILE}" ]; then
    # We save the file, and then point the saved sample to this file
    CT_DoAddFileToSample "${CT_KERNEL_LINUX_CONFIG_FILE}" "${CT_TOP_DIR}/samples/${CT_TARGET}/${CT_KERNEL}-${CT_KERNEL_VERSION}.config"
    sed -r -i -e 's|^(CT_KERNEL_LINUX_CONFIG_FILE=).+$|\1"'"${samp_top_dir}"'/samples/${CT_TARGET}/${CT_KERNEL}-${CT_KERNEL_VERSION}.config"|;' \
        "${CT_TOP_DIR}/samples/${CT_TARGET}/crosstool.config"
else
    # remove any dangling files
    for f in "${CT_TOP_DIR}/samples/${CT_TARGET}/${CT_KERNEL}-"*.config; do
        if [ -f "${f}" ]; then rm -f "${f}"; fi
    done
fi

# Save the uClibc .config file
if [ -n "${CT_LIBC_UCLIBC_CONFIG_FILE}" ]; then
    # We save the file, and then point the saved sample to this file
    CT_DoAddFileToSample "${CT_LIBC_UCLIBC_CONFIG_FILE}" "${CT_TOP_DIR}/samples/${CT_TARGET}/${CT_LIBC}-${CT_LIBC_VERSION}.config"
    sed -r -i -e 's|^(CT_LIBC_UCLIBC_CONFIG_FILE=).+$|\1"'"${samp_top_dir}"'/samples/${CT_TARGET}/${CT_LIBC}-${CT_LIBC_VERSION}.config"|;' \
        "${CT_TOP_DIR}/samples/${CT_TARGET}/crosstool.config"
else
    # remove any dangling files
    for f in "${CT_TOP_DIR}/samples/${CT_TARGET}/${CT_LIBC}-"*.config; do
        if [ -f "${f}" ]; then rm -f "${f}"; fi
    done
fi