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=c4613d1f8a9587bd7b366191830364b3 \
                    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 \
           file://BUILD_RUNTIME_BUG_ON-vs-gcc7.patch \
           file://0001-Fix-btrfs-Remove-unnecessary-fs_info-parameter.patch \
"

SRC_URI[md5sum] = "8110099f4615fc89a74ffe9189b56cfc"
SRC_URI[sha256sum] = "04a080c81743eb29d181bac29ceb0c15819a2f4210793f2cc9958d885435029f"

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 ${D}/${nonarch_base_libdir} -depth -type d -empty -exec rmdir {} \;
}

python do_package_prepend() {
    if not os.path.exists(os.path.join(d.getVar('D'), d.getVar('nonarch_base_libdir')[1:], 'modules')):
        bb.warn("%s: no modules were created; this may be due to CONFIG_TRACEPOINTS not being enabled in your kernel." % d.getVar('PN'))
}