#! /bin/bash

################################################################################
# Prepare
################################################################################

# Set up shell
if [ "$(echo ${VERBOSE} | tr '[:upper:]' '[:lower:]')" = 'yes' ]; then
    set -x                      # Output commands
fi
set -e                          # Abort on errors



################################################################################
# Build
################################################################################

echo "BEGIN MESSAGE"
echo "Building pciutils..."
echo "END MESSAGE"

# Set locations
THORN=pciutils
NAME=pciutils-3.2.0
SRCDIR="$(dirname $0)"
BUILD_DIR=${SCRATCH_BUILD}/build/${THORN}
INSTALL_DIR=${SCRATCH_BUILD}/external/${THORN}
DONE_FILE=${SCRATCH_BUILD}/done/${THORN}
PCIUTILS_DIR=${INSTALL_DIR}

(
    exec >&2                    # Redirect stdout to stderr
    if [ "$(echo ${VERBOSE} | tr '[:upper:]' '[:lower:]')" = 'yes' ]; then
        set -x                  # Output commands
    fi
    set -e                      # Abort on errors
    cd ${SCRATCH_BUILD}
    if [ -e ${DONE_FILE} -a ${DONE_FILE} -nt ${SRCDIR}/dist/${NAME}.tar.gz \
                         -a ${DONE_FILE} -nt ${SRCDIR}/configure.sh ]
    then
        echo "pciutils: The enclosed pciutils library has already been built; doing nothing"
    else
        echo "pciutils: Building enclosed pciutils library"
        
        if [ x$TAR = x ] ; then
          echo 'BEGIN ERROR'
          echo 'Could not find tar command. Please make sure that (gnu) tar is present'
          echo 'and that the TAR variable is set to its location.'
          echo 'END ERROR'
          exit 1
        fi
        if [ x$PATCH = x ] ; then
          echo 'BEGIN ERROR'
          echo 'Could not find patch command. Please make sure that (gnu) tar is present'
          echo 'and that the PATCH variable is set to its location.'
          echo 'END ERROR'
          exit 1
        fi

        export LDFLAGS="${CFLAGS} ${LDFLAGS}"
        export LDLIBS="-lz"
        unset LIBS
        if echo '' ${ARFLAGS} | grep 64 > /dev/null 2>&1; then
            export OBJECT_MODE=64
        fi
        
        echo "pciutils: Preparing directory structure..."
        mkdir build external done 2> /dev/null || true
        rm -rf ${BUILD_DIR} ${INSTALL_DIR}
        mkdir ${BUILD_DIR} ${INSTALL_DIR}
        
        echo "pciutils: Unpacking archive..."
        pushd ${BUILD_DIR}
        ${TAR?} xzf ${SRCDIR}/dist/${NAME}.tar.gz
        
        echo "pciutils: Configuring..."
        cd ${NAME}
        # pciutils does not have a configure script; doing nothing
        
        echo "pciutils: Building..."
        ${MAKE} PREFIX="${PCIUTILS_DIR}" CC="${CC}" CFLAGS="${CFLAGS}" OPT= LDFLAGS="${LDFLAGS}" LDLIBS="${LDLIBS}" AR="${AR}" RANLIB="${RANLIB}" ZLIB=yes DNS=no SHARED=no
        
        echo "pciutils: Installing..."
        ${MAKE} PREFIX=${PCIUTILS_DIR} install install-lib
        popd
        
        echo "pciutils: Cleaning up..."
        rm -rf ${BUILD_DIR}
        
        date > ${DONE_FILE}
        echo "pciutils: Done."
    fi
)

if (( $? )); then
    echo 'BEGIN ERROR'
    echo 'Error while building pciutils. Aborting.'
    echo 'END ERROR'
    exit 1
fi



#PCIUTILS_INC_DIRS="${PCIUTILS_DIR}/include"
#PCIUTILS_LIB_DIRS="${PCIUTILS_DIR}/lib"
#PCIUTILS_LIBS='pci'

export PKG_CONFIG_PATH=${PCIUTILS_DIR}/lib/pkgconfig:${PKG_CONFIG_PATH}

inc_dirs="$(pkg-config libpci --cflags)"
lib_dirs="$(pkg-config libpci --libs)"
libs="$(pkg-config libpci --libs)"
# Translate option flags into Cactus options:
# - for INC_DIRS, remove -I prefix from flags
# - for LIB_DIRS, remove all -l flags, and remove -L prefix from flags
# - for LIBS, keep only -l flags, and remove -l prefix from flags
PCIUTILS_INC_DIRS="$(echo '' $(for flag in $inc_dirs; do echo '' $flag; done | sed -e 's/^ -I//'))"
PCIUTILS_LIB_DIRS="$(echo '' $(for flag in $lib_dirs; do echo '' $flag; done | grep -v '^ -l' | sed -e 's/^ -L//'))"
PCIUTILS_LIBS="$(echo '' $(for flag in $libs; do echo '' $flag; done | grep '^ -l' | sed -e 's/^ -l//'))"



################################################################################
# Configure Cactus
################################################################################

PCIUTILS_INC_DIRS="$(${CCTK_HOME}/lib/sbin/strip-incdirs.sh ${PCIUTILS_INC_DIRS})"
PCIUTILS_LIB_DIRS="$(${CCTK_HOME}/lib/sbin/strip-libdirs.sh ${PCIUTILS_LIB_DIRS})"

# Pass options to Cactus
echo "BEGIN MAKE_DEFINITION"
echo "PCIUTILS_DIR      = ${PCIUTILS_DIR}"
echo "PCIUTILS_INC_DIRS = ${PCIUTILS_INC_DIRS}"
echo "PCIUTILS_LIB_DIRS = ${PCIUTILS_LIB_DIRS}"
echo "PCIUTILS_LIBS     = ${PCIUTILS_LIBS}"
echo "END MAKE_DEFINITION"

echo 'INCLUDE_DIRECTORY $(PCIUTILS_INC_DIRS)'
echo 'LIBRARY_DIRECTORY $(PCIUTILS_LIB_DIRS)'
echo 'LIBRARY           $(PCIUTILS_LIBS)'