SECTION = "devel"
SUMMARY = "Linux Trace Toolkit KERNEL MODULE"
DESCRIPTION = "The lttng-modules 2.0 package contains the kernel tracer modules"
LICENSE = "LGPLv2.1 & GPLv2 & MIT"
LIC_FILES_CHKSUM = "file://LICENSE;md5=362844633a08753bd96ab322a6c7f9f6 \
                    file://gpl-2.0.txt;md5=751419260aa954499f7abaabaa882bbe \
                    file://lgpl-2.1.txt;md5=243b725d71bb5df4a1e5920b344b86ad"

inherit module

COMPATIBLE_HOST = '(x86_64|i.86|powerpc|aarch64|mips|nios2|arm).*-linux'

SRC_URI = "https://lttng.org/files/${BPN}/${BPN}-${PV}.tar.bz2 \
           file://Makefile-Do-not-fail-if-CONFIG_TRACEPOINTS-is-not-en.patch"

SRC_URI[md5sum] = "717df375ccb6f32bb297cc2f2e692bbf"
SRC_URI[sha256sum] = "af914e5954081cfb6bd4c6dcf9390474e0c13fe056b12b3dfc86d1b88b8340a0"

export INSTALL_MOD_DIR="kernel/lttng-modules"

EXTRA_OEMAKE += "KERNELDIR='${STAGING_KERNEL_DIR}'"

do_install_append() {
	# Delete empty directories to avoid QA failures if no modules were built
	find ${D}/lib -depth -type d -empty -exec rmdir {} \;
}

python do_package_prepend() {
    if not os.path.exists(os.path.join(d.getVar('D'), 'lib/modules')):
        bb.warn("%s: no modules were created; this may be due to CONFIG_TRACEPOINTS not being enabled in your kernel." % d.getVar('PN'))
}