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meta-musicians/classes/lv2-turtle-helper.bbclass
Andreas Müller 568f2788da lv2-turtle-helper.bbclass: Fix typo in comment
Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>
2021-08-19 10:10:22 +02:00

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# Helper class to handle creation of lv2 turtle files
# Turtle files (*.ttl) are created during compile usually. This does not work
# for us because cross build libraries cannot be opened by build host. To get
# around we:
#
# 1. Adjust build (see do_ttl_sed) so that instead calling LV2_TTL_GENERATOR
# the plugin file name is written to LV2_PLUGIN_INFO_FILE
# 2. Try to generate ttl with the help of qemu. This can faile for various
# reasons: SIMD instructions not supported / qemu itself / ...
# For files not handled properly we try:
# 3. Generate ttl-files at first boot / after package was installed
# File containing names of plugins to handle in do_compile:append
# Line-format expected: <some-path-in-build>/<plugin>.so
LV2_PLUGIN_INFO_FILE = "${WORKDIR}/lv2-ttl-generator-data"
LV2_PLUGIN_INFO_FILE_CLEANED = "${LV2_PLUGIN_INFO_FILE}-cleaned"
# File containing names of plugins to handle in do_compile:append
# Line-format expected: <path-ontarget>/<plugin>.so
LV2_PLUGIN_POSTINST_INFO_FILE = "${LV2_PLUGIN_INFO_FILE}-postinst"
# To make ontarget postinst/prerm happen, the names of all plugins with their
# paths as installed on target a stored in a file called lv2-postinst-manifest
LV2_POSTINST_MANIFEST = "${datadir}/${BPN}/lv2-postinst-manifest"
# Path to the ttl-generator qemu will use. Since most plugins are based on dpf
# (added by git-submodule) we can set a default matchin > 80%+
LV2_TTL_GENERATOR ?= "${S}/dpf/utils/lv2_ttl_generator"
inherit qemu-ext-musicians audio-plugin-common
# override this function and execute sed (or other magic) to adjust Makefiles
# so that lv2-ttl-generator is not executed but plugin information. Same here:
# Set default match many dpf-based plugins
do_ttl_sed() {
sed -i 's|"$GEN" "./$FILE"|echo "`realpath "./$FILE"`" >> ${LV2_PLUGIN_INFO_FILE}|g' ${S}/dpf/utils/generate-ttl.sh
}
do_configure:prepend() {
# 1st configure?
if [ ! -f ${LV2_PLUGIN_INFO_FILE} ]; then
do_ttl_sed
fi
}
do_compile:prepend() {
# remove plugin-info from previous build
rm -f ${LV2_PLUGIN_INFO_FILE}
rm -f ${LV2_PLUGIN_POSTINST_INFO_FILE}
}
do_compile[vardeps] += "LV2_TTL_GENERATOR"
do_compile:append() {
rm -f ${LV2_PLUGIN_INFO_FILE_CLEANED}
if [ -e ${LV2_PLUGIN_INFO_FILE} ]; then
echo
echo "---------- start of lv2 ttl generation ----------"
echo "lv2-plugins found - try ttl-generation with LV2_TTL_GENERATOR: '${LV2_TTL_GENERATOR}'"
# try build ttl-files with quemu
for sofile in `sort ${LV2_PLUGIN_INFO_FILE} | uniq`; do
echo $sofile >> ${LV2_PLUGIN_INFO_FILE_CLEANED}
sobase=`basename $sofile`
ttl_failed=""
if [ "x${ttl_failed}" = "x" ]; then
cd `dirname ${sofile}`
echo "QEMU lv2-ttl-generator for ${sofile}..."
${@qemu_run_binary_local(d, '${STAGING_DIR_TARGET}', '${LV2_TTL_GENERATOR}')} ${sofile} || ttl_failed="$?"
if [ "x${ttl_failed}" = "x" ]; then
echo "Generation succeeded."
else
if [ "x${ttl_failed}" = "x124" ]; then
echo "ERROR: ttl-generation for `basename ${sofile}` timed out!"
else
echo "ERROR: ttl-generation for `basename ${sofile}` failed!"
echo "LV2_TTL_GENERATOR set correctly - check few lines above?"
# qemu failed: remove generated core files
rm -f *.core
fi
fi
fi
if [ "x${ttl_failed}" != "x" ]; then
# postpone on target
echo `basename $sofile` >> ${LV2_PLUGIN_POSTINST_INFO_FILE}
fi
done
else
echo
echo "LV2_PLUGIN_INFO_FILE was not created during compilation - check do_ttl_sed() or patch postponing ttl-generation"
echo
exit -1
fi
}
do_compile[postfuncs] += "do_ttl_qa"
python do_ttl_qa() {
lv2_plugin_postinst_info_file = d.getVar('LV2_PLUGIN_POSTINST_INFO_FILE')
if os.path.isfile(lv2_plugin_postinst_info_file):
lv2_plugin_info_file_cleaned = d.getVar('LV2_PLUGIN_INFO_FILE_CLEANED')
num_plugins = len(open(lv2_plugin_info_file_cleaned).readlines())
num_plugins_postinst = len(open(lv2_plugin_postinst_info_file).readlines())
name = d.getVar('PN')
if num_plugins == num_plugins_postinst:
bb.warn("All LV2-plugins in %s are postponed to post-install! Check log.do_compile for valid LV2_TTL_GENERATOR (%s)" % (name,d.getVar('LV2_TTL_GENERATOR')))
else:
bb.warn("%i of %i LV2-plugins in %s are postponed to post-install! Check %s and log.do_compile for details" % (num_plugins_postinst, num_plugins, name, lv2_plugin_postinst_info_file))
}
do_install:append() {
# create postinst manifest
if [ -e ${LV2_PLUGIN_POSTINST_INFO_FILE} ]; then
install -d ${D}`dirname ${LV2_POSTINST_MANIFEST}`
for sofile in `cat ${LV2_PLUGIN_POSTINST_INFO_FILE}`; do
installed=`find ${D}${libdir}/lv2 -name $sofile | sed 's|${D}||g'`
echo $installed >> ${D}${LV2_POSTINST_MANIFEST}
done
fi
}
pkg_postinst_ontarget:${PN_LV2}() {
if [ -e ${LV2_POSTINST_MANIFEST} ]; then
oldpath=`pwd`
for sofile in `cat ${LV2_POSTINST_MANIFEST}`; do
lv2_path=`dirname "$sofile"`
cd "$lv2_path"
if ! lv2-ttl-generator "$sofile"; then
echo "Error: Turtle files for $sofile could not be created - remove $lv2_path!"
cd ..
rm -rf "$lv2_path"
fi
done
cd $oldpath
fi
}
pkg_prerm:${PN_LV2}() {
if [ -e ${LV2_POSTINST_MANIFEST} ]; then
for sofile in `cat ${LV2_POSTINST_MANIFEST}`; do
path=`dirname "$sofile"`
for turtle in `find $path -name '*.ttl'`; do
rm $turtle
done
done
fi
}
FILES:${PN_LV2} += "${LV2_POSTINST_MANIFEST}"
RDEPENDS:${PN_LV2} += "lv2-ttl-generator"