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# ---------------------------------------------------------------------------------------------------------------------
# SPDX-License-Identifier: MIT
# ---------------------------------------------------------------------------------------------------------------------
# Consistent handling of the defconfig -> .config, with merge of config
# fragments using the same mechanism as busybox and linux-yocto.
#
# The functionality is split into a number of small functions to easier
# facilitate recipe alteration of the process, or filtering of the fragments
# to be merged. To filter the fragments in use, append to the pipeline (after
# the inherit of this class):
#
# merge_fragment_pipeline .= "| my_filter"
#
# Note: due to bitbake's use of set -e, the filter must return success (0).
# For merge_config.sh
DEPENDS += "kern-tools-native"
DEFCONFIG ?= "${WORKDIR}/defconfig"
merge_fragment_pipeline = "cat"
do_configure:prepend () {
DEFCONFIG="${DEFCONFIG}"
if [ "${DEFCONFIG#/}" = "${DEFCONFIG}" ]; then
DEFCONFIG="${S}/${DEFCONFIG}"
fi
if [ ! -e "$DEFCONFIG" ]; then
bbfatal "Configuration file '${DEFCONFIG}' does not exist"
fi
install_config
merge_fragments ${B}/.config
}
install_config () {
cp -f $DEFCONFIG ${B}/.config
}
merge_fragments () {
list_fragments | ${merge_fragment_pipeline} >"${B}/fragments"
merge_config.sh -m "$1" $(cat "${B}/fragments")
}
list_fragments () {
cat <<END
${@"\n".join(src_config_fragments(d))}
END
}
def src_config_fragments(d):
workdir = d.getVar('WORKDIR')
fetch = bb.fetch2.Fetch([], d)
for url in fetch.urls:
urldata = fetch.ud[url]
urldata.setup_localpath(d)
unpacked_path = unpack_path(urldata, workdir, lambda f: f.endswith('cfg'))
if unpacked_path:
yield unpacked_path
# This is directly from bitbake's fetch2 unpack() method
def unpack_path(urldata, rootdir, filter_path=None):
localpath = urldata.localpath
# Localpath can't deal with 'dir/*' entries, so it converts them to '.',
# but it must be corrected back for local files copying
if urldata.basename == '*' and localpath.endswith('/.'):
localpath = '%s/%s' % (file.rstrip('/.'), urldata.path)
base, ext = os.path.splitext(localpath)
if ext in ['.gz', '.bz2', '.Z', '.xz', '.lz']:
efile = os.path.join(rootdir, os.path.basename(base))
else:
efile = localpath
if not filter_path or not filter_path(efile):
return
if 'subdir' in urldata.parm:
subdir = urldata.parm.get('subdir')
if os.path.isabs(subdir):
if not os.path.realpath(subdir).startswith(os.path.realpath(rootdir)):
bb.fatal("subdir argument isn't a subdirectory of unpack root %s" % rootdir, urldata.url)
unpackdir = subdir
else:
unpackdir = os.path.join(rootdir, subdir)
else:
unpackdir = rootdir
destdir = '.'
# For file:// entries all intermediate dirs in path must be created at destination
if urldata.type == "file":
# Trailing '/' does a copying to wrong place
urlpath = urldata.path.rstrip('/')
# Want files places relative to cwd so no leading '/'
urlpath = urlpath.lstrip('/')
if urlpath.find("/") != -1:
destdir = urlpath.rsplit("/", 1)[0] + '/'
return os.path.join(unpackdir, destdir, os.path.basename(efile))
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