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# waf is a build system which is used by samba related project.
# Obtain details from https://wiki.samba.org/index.php/Waf
#
inherit qemu pythonnative

DEPENDS += "qemu-native libxslt-native docbook-xsl-stylesheets-native python"

CONFIGUREOPTS = " --prefix=${prefix} \
                  --bindir=${bindir} \
                  --sbindir=${sbindir} \
                  --libexecdir=${libexecdir} \
                  --datadir=${datadir} \
                  --sysconfdir=${sysconfdir} \
                  --sharedstatedir=${sharedstatedir} \
                  --localstatedir=${localstatedir} \
                  --libdir=${libdir} \
                  --includedir=${includedir} \
                  --oldincludedir=${oldincludedir} \
                  --infodir=${infodir} \
                  --mandir=${mandir} \
                  ${PACKAGECONFIG_CONFARGS} \
                "

# avoids build breaks when using no-static-libs.inc
DISABLE_STATIC = ""

def get_waf_parallel_make(d):
    pm = d.getVar('PARALLEL_MAKE')
    if pm:
        # look for '-j' and throw other options (e.g. '-l') away
        # because they might have different meaning in bjam
        pm = pm.split()
        while pm:
            opt = pm.pop(0)
            if opt == '-j':
                v = pm.pop(0)
            elif opt.startswith('-j'):
                v = opt[2:].strip()
            else:
                continue

            v = min(64, int(v))
            return '-j' + str(v)

    return ""

# Three methods for waf cross compile:
# 1. answers:
#    Only --cross-answers - try the cross-answers file, and if
#    there's no corresponding answer, add to the file and mark
#    the configure process as unfinished.
# 2. exec:
#    Only --cross-execute - get the answer from cross-execute,
#    an emulator (qemu) is used to run cross-compiled binaries.
# 3. both:
#    (notes: not supported in lower version of some packages,
#     please check buildtools/wafsamba/samba_cross.py in the
#     package source)
#    Try the cross-answers file first, and if there is no
#    corresponding answer, use cross-execute to get an answer,
#    and add that answer to the file.
#
# The first one is preferred since it may fail with 2 or 3 if
# the target board is not suported by qemu, but we can use 2 or 3
# to help generate the cross answer when adding new board support.
CROSS_METHOD ?= "answer"

do_configure() {

    # Prepare the cross-answers file
    WAF_CROSS_ANSWERS_PATH="${THISDIR}/../../files/waf-cross-answers"
    CROSS_ANSWERS="${B}/cross-answers-${TARGET_ARCH}.txt"
    if [ -e ${CROSS_ANSWERS} ]; then
        rm -f ${CROSS_ANSWERS}
    fi
    echo 'Checking uname machine type: "${TARGET_ARCH}"' >> ${CROSS_ANSWERS}
    echo 'Checking uname release type: "${OLDEST_KERNEL}"' >> ${CROSS_ANSWERS}
    cat ${WAF_CROSS_ANSWERS_PATH}/cross-answers-${TARGET_ARCH}.txt >> ${CROSS_ANSWERS}

    qemu_binary="${@qemu_target_binary(d)}"
    if [ "${qemu_binary}" = "qemu-allarch" ]; then
        qemu_binary="qemuwrapper"
    fi

    libdir_qemu="${STAGING_DIR_HOST}/${libdir}"
    base_libdir_qemu="${STAGING_DIR_HOST}/${base_libdir}"

    CROSS_EXEC="${qemu_binary} \
                ${QEMU_OPTIONS} \
                -L ${STAGING_DIR_HOST} \
                -E LD_LIBRARY_PATH=${libdir_qemu}:${base_libdir_qemu}"

    export BUILD_ARCH=${BUILD_ARCH}
    export HOST_ARCH=${HOST_ARCH}
    export STAGING_LIBDIR=${STAGING_LIBDIR}
    export STAGING_INCDIR=${STAGING_INCDIR}
    export PYTHONPATH=${STAGING_DIR_HOST}${PYTHON_SITEPACKAGES_DIR}

    CONFIG_CMD="./configure ${CONFIGUREOPTS} ${EXTRA_OECONF} --cross-compile"
    if [ "${CROSS_METHOD}" = "answer" ]; then
        ${CONFIG_CMD} --cross-answers="${CROSS_ANSWERS}"
    elif [ "${CROSS_METHOD}" = "exec" ]; then
        ${CONFIG_CMD} --cross-exec="${CROSS_EXEC}"
    elif [ "${CROSS_METHOD}" = "both" ]; then
        ${CONFIG_CMD} --cross-answers="${CROSS_ANSWERS}" --cross-exec="${CROSS_EXEC}"
    else
        echo "ERROR: ${CROSS_METHOD} is not valid for cross-compile!"
        exit 1
    fi
}

do_compile[progress] = "outof:^\[\s*(\d+)/\s*(\d+)\]\s+"
do_compile () {
    python ./buildtools/bin/waf ${@oe.utils.parallel_make_argument(d, '-j%d', limit=64)}
}

do_install() {
    oe_runmake install DESTDIR=${D}
}