add_tool.sh

#!/bin/sh

usage() {
  cat 1>&2 <<EOS
SYNOPSIS
        ${SCRIPT_NAME} TARGET VERSION

        TARGET  either of the followings:
                lzip, curl, gcc
EOS
};

exit_iferror() {
  EXIT_CODE=$?
  ERROR_MSG=$@
  [ ${EXIT_CODE} -eq 0 ] ||
    cat 1>&2 <<EOS
${ERROR_MSG}
Exit code=${EXIT_CODE}
EOS
  [ ${EXIT_CODE} -eq 0 ] || exit ${EXIT_CODE}
};

# Constants
#   Some of these are determined at runtime. They should not be touched.
SCRIPT_NAME=${0}
TOOLS_ROOT=$(readlink -f $(dirname ${0})/..)
TOOLS_SRC=${TOOLS_ROOT}/src

# Arguments
TARGET_NAME=${1}
TARGET_VERSION=${2}
[ -z "${TARGET_NAME}" ] && usage && exit 1
[ -z "${TARGET_VERSION}" ] && usage && exit 1

SOURCE_DIR="${TOOLS_SRC}/${TARGET_NAME}-${TARGET_VERSION}"
[ -d "${SOURCE_DIR}" ] ||
  exit_iferror "[Error] Directory ${SOURCE_DIR} not found."
TARGET_DIR="${TOOLS_ROOT}/${TARGET_NAME}-${TARGET_VERSION}"

# Variables
CONFIGURE_OPTIONS=

case "${TARGET_NAME}" in
  "lzip" )
    CONFIGURE_OPTIONS="${CONFIGURE_OPTIONS} --prefix=${TARGET_DIR}"
  ;;
  "gcc" )
    CONFIGURE_OPTIONS="${CONFIGURE_OPTIONS} --prefix=${TARGET_DIR}"
    CONFIGURE_OPTIONS="${CONFIGURE_OPTIONS} --enable-threads=posix"
    CONFIGURE_OPTIONS="${CONFIGURE_OPTIONS} --disable-multilib"
    CONFIGURE_OPTIONS="${CONFIGURE_OPTIONS} --enable-languages=c,c++"
  ;;
  "curl" )
    CONFIGURE_OPTIONS="${CONFIGURE_OPTIONS} --prefix=${TARGET_DIR}"
  ;;
  * )
    cat 1>&2 <<EOS
[Error] ${TARGET_NAME} not available.
EOS
    usage
    exit 1
  ;;
esac

cd ${SOURCE_DIR} &&
  ./configure ${CONFIGURE_OPTIONS} &&
  make &&
  make install
exit_iferror "[Error] Failed to build a tool."

[ -d "${TARGET_DIR}/bin" ] &&
  cd ${TOOLS_ROOT}/bin &&
  find ${TARGET_DIR}/bin -maxdepth 1 -type f -nowarn -print0 | \
    xargs -0 ln -s --target-directory .

[ -d "${TARGET_DIR}/lib" ] &&
  cd ${TOOLS_ROOT}/lib &&
  find ${TARGET_DIR}/lib -maxdepth 1 -type f -nowarn -print0 | \
    xargs -0 ln -s --target-directory . &&
  find ${TARGET_DIR}/lib -maxdepth 1 -type l -nowarn -print0 | \
    xargs -0 ln -s --target-directory .

[ -d "${TARGET_DIR}/include" ] &&
  cd ${TOOLS_ROOT}/include &&
  find ${TARGET_DIR}/include -type d -nowarn | \
    sed "s#^${TARGET_DIR}/include##g" | sed "s#^/##g" | grep -vE "^$" | xargs rm -rf &&
  cd -
[ -d "${TARGET_DIR}/include" ] &&
  cd ${TOOLS_ROOT}/include &&
  find ${TARGET_DIR}/include -type d -nowarn | \
    sed "s#^${TARGET_DIR}/include##g" | sed "s#^/##g" | grep -vE "^$" | \
    xargs cp -rp ${TARGET_DIR}/include/{} ${TOOLS_ROOT}/include/{}
  cd -

exit 0