bpftool: add new recipe

The bpftool allows for inspection and simple manipulation of
eBPF programs and maps, so common in the kernel selftests.

Signed-off-by: Daniel Díaz <daniel.diaz@linaro.org>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-kernel/bpftool/bpftool.bb

@@ -0,0 +1,31 @@
+SUMMARY = "Inspect and manipulate eBPF programs and maps"
+DESCRIPTION = "bpftool is a kernel tool for inspection and simple manipulation \
+of eBPF programs and maps."
+LICENSE = "GPLv2"
+LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/GPL-2.0;md5=801f80980d171dd6425610833a22dbe6"
+DEPENDS = "binutils elfutils"
+PROVIDES = "virtual/bpftool"
+
+inherit bash-completion kernelsrc kernel-arch
+
+do_populate_lic[depends] += "virtual/kernel:do_patch"
+
+EXTRA_OEMAKE = "-C ${S}/tools/bpf/bpftool O=${B} CROSS=${TARGET_PREFIX} CC="${CC}" LD="${LD}" AR=${AR} ARCH=${ARCH}"
+
+do_configure[depends] += "virtual/kernel:do_shared_workdir"
+
+do_compile() {
+    oe_runmake
+}
+
+do_install() {
+    oe_runmake DESTDIR=${D} install
+}
+
+PACKAGE_ARCH = "${MACHINE_ARCH}"
+
+python do_package_prepend() {
+    d.setVar('PKGV', d.getVar("KERNEL_VERSION", True).split("-")[0])
+}
+
+B = "${WORKDIR}/${BPN}-${PV}"