#! /bin/bash

PROJECT=libraries

# Available sub-projects.
AVAILABLE_PROJECTS=( libraries )

# Enabled sub-projects.
PROJECTS=( libraries )

# Additional options (see functions sources below).
# Options followed by a ':' require an argument, by '::' allow an optional argument.
SHORT_OPTIONS=
# Long options are not available with BSD getopt.
LONG_OPTIONS=

# Help for additional options
usage() {
  # option h "help" "display this help and exit"
  return
}

# Find the directory containing this script.
source="${BASH_SOURCE[0]}"
while [ -h "${source}" ] ; do
  SCRIPTS="$(cd -P "$(dirname "${source}")" && pwd)"
  source="$(readlink "${source}")"
  [[ ${source} != /* ]] && source="$DIR/${source}"
done
SCRIPTS="$(cd -P "$(dirname "${source}")" && pwd)"

check_target() {
  if [ "${TARGET}" = "all" ] ; then
    echo ""
  else 
    echo ${TARGETTUPLE}
  fi
}

# Get the list of available targets.
get_targets() {
  cat ${TOOLINFO}/libraries | grep -v ^\# | sed -e 's/.*-elk*//g'
}

# Get the list of libraries to build.
get_libraries() {
  cat ${SCRIPTS}/libraries | grep -v ^\#
}

# Get support functions and definitions.
source ${SCRIPTS}/support

# Build the libraries for a target.
build_library() {
  # musl and compiler-rt are prerequisites for all the other libraries.
  if [ ! -d ${SRCTOP}/musl ] ; then
    # Get and  patch the musl sources.
    run ${SCRIPTS}/build-musl -cp ${TARGETTUPLE}
  fi

  # Configure and install musl headers.
  echo "Building musl for ${1}."
  run ${SCRIPTS}/build-musl -Ci ${1}

  if [ ! -d ${SRCTOP}/compiler-rt ] ; then
    # Get and  patch the compiler-rt sources.
    run ${SCRIPTS}/build-compiler-rt -cp ${TARGETTUPLE}
  fi

  # Configure, build, and install compiler-rt.
  echo "Building compiler-rt for ${1}."
  run ${SCRIPTS}/build-compiler-rt -Cbi ${1}

  # Configure, build, and install musl.
  echo "Building musl for ${1}."
  run ${SCRIPTS}/build-musl -Cbi ${1}

  # Build all the other libraries.
  for library in $(get_libraries) ; do
    if [ ! -r ${SCRIPTS}/build-${library} ] ; then
      bailout "There is no 'build-${library}' script to build '${library}'."
    fi
    if [ ! -d ${SRCTOP}/${library} ] ; then
      # Get and  patch the sources.
      run ${SCRIPTS}/build-${library} -cp ${TARGETTUPLE}
    fi

    # Configure, build, and install the library
    echo "Building ${library} for ${1}."
    run ${SCRIPTS}/build-${library} -Cbi ${1}
  done
}

if [ "${TOOLS}" != "ecc" ] ; then
  # We need ecc to build the libraries
  bailout "ecc is unavailable. Run make-ecc first."
fi

if [ "${TARGET}" != "" -a "${TARGET}" != "all" ] ; then
  # Build for a single host.
  if [ "$(get_toolinfo ${TARGET})" = "" ] ; then
    bailout "'${TARGET}' is not a valid target."
  fi
  build_library ${TARGET}
elif [ "${TARGET}" = "all" ] ; then
  # Build for all known targets.
  for target in ${TARGETS} ; do
    build_library ${target}
  done
fi